10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2023

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _________ to _________

Name of Registrant, State of Incorporation, Address Of Principal Executive Offices, Telephone Number, Commission File No., IRS Employer Identification No.

PNM Resources, Inc.

(A New Mexico Corporation)

414 Silver Ave. SW

Albuquerque, New Mexico 87102-3289

Telephone Number - (505) 241-2700

Commission File No. - 001-32462

IRS Employer Identification No. - 85-0468296

Public Service Company of New Mexico

(A New Mexico Corporation)

414 Silver Ave. SW

Albuquerque, New Mexico 87102-3289

Telephone Number - (505) 241-2700

Commission File No. - 001-06986

IRS Employer Identification No. - 85-0019030

Texas-New Mexico Power Company

(A Texas Corporation)

577 N. Garden Ridge Blvd.

Lewisville, Texas 75067

Telephone Number - (972) 420-4189

Commission File No. - 002-97230

IRS Employer Identification No. - 75-0204070

Securities registered pursuant to Section 12(b) of the Act:

Registrant	Title of each class	Trading Symbol(s)	Name of exchange on which registered
PNM Resources, Inc.	Common Stock, no par value	PNM	New York Stock Exchange

Indicate by check mark whether each registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

PNM Resources, Inc. (“PNMR”)	Yes	☑	No	☐
Public Service Company of New Mexico (“PNM”)	Yes	☑	No	☐
Texas-New Mexico Power Company (“TNMP”)	Yes	☐	No	☑

(NOTE: As a voluntary filer, not subject to the filing requirements, TNMP filed all reports under Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months.)

Indicate by check mark whether each registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

PNMR	Yes	☑	No	☐
PNM	Yes	☑	No	☐
TNMP	Yes	☑	No	☐

Indicate by check mark whether registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

	Large accelerated filer		Accelerated filer		Non-accelerated filer		Smaller reporting company		Emerging growth company
PNMR		☑		☐		☐		☐		☐
	Large accelerated filer		Accelerated filer		Non-accelerated filer		Smaller reporting company		Emerging growth company
PNM		☐		☐		☑		☐		☐
	Large accelerated filer		Accelerated filer		Non-accelerated filer		Smaller reporting company		Emerging growth company
TNMP		☐		☐		☑		☐		☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether any of the registrants is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐   No ☑

As of October 20, 2023, 85,834,874 shares of common stock, no par value per share, of PNMR were outstanding.

The total number of shares of common stock of PNM, no par value per share, outstanding as of October 20, 2023, was 39,117,799 all held by PNMR (and none held by non-affiliates).

The total number of shares of common stock of TNMP, $10 par value per share, outstanding as of October 20, 2023, was 6,358 all held indirectly by PNMR (and none held by non-affiliates).

PNM AND TNMP MEET THE CONDITIONS SET FORTH IN GENERAL INSTRUCTIONS (H) (1) (a) AND (b) OF FORM 10-Q AND ARE THEREFORE FILING THIS FORM WITH THE REDUCED DISCLOSURE FORMAT PURSUANT TO GENERAL INSTRUCTION (H) (2).

This combined Form 10-Q is separately filed by PNMR, PNM, and TNMP.  Information contained herein relating to any individual registrant is filed by such registrant on its own behalf.  Each registrant makes no representation as to information relating to the other registrants.  When this Form 10-Q is incorporated by reference into any filing with the SEC made by PNMR, PNM, or TNMP, as a registrant, the portions of this Form 10-Q that relate to each other registrant are not incorporated by reference therein.

2

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

INDEX

	Page No.
GLOSSARY	4
PART I. FINANCIAL INFORMATION
ITEM 1. FINANCIAL STATEMENTS (UNAUDITED)
PNM RESOURCES, INC. AND SUBSIDIARIES
Condensed Consolidated Statements of Earnings	8
Condensed Consolidated Statements of Comprehensive Income	9
Condensed Consolidated Statements of Cash Flows	10
Condensed Consolidated Balance Sheets	12
Condensed Consolidated Statements of Changes in Equity	14
PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES
Condensed Consolidated Statements of Earnings	15
Condensed Consolidated Statements of Comprehensive Income	16
Condensed Consolidated Statements of Cash Flows	17
Condensed Consolidated Balance Sheets	19
Condensed Consolidated Statements of Changes in Equity	21
TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES
Condensed Consolidated Statements of Earnings	22
Condensed Consolidated Statements of Cash Flows	23
Condensed Consolidated Balance Sheets	24
Condensed Consolidated Statements of Changes in Common Stockholder’s Equity	26
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS	27
ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	82
ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	118
ITEM 4. CONTROLS AND PROCEDURES	120
PART II. OTHER INFORMATION
ITEM 1. LEGAL PROCEEDINGS	121
ITEM 1A. RISK FACTORS	121
ITEM 5. OTHER INFORMATION	121
ITEM 6. EXHIBITS	121
SIGNATURE	123

3

GLOSSARY

Definitions:
2023 Forward Sale Agreements	PNMR’s forward sale agreements under the PNMR 2022 ATM Program
2024 Rate Change	PNM’s request for a general increase in electric rates filed with the NMPRC on December 5, 2022 using a calendar year 2024 FTY
ABCWUA	Albuquerque Bernalillo County Water Utility Authority
ACE Rule	Affordable Clean Energy Rule
AEP OnSite Partners	AEP OnSite Partners, LLC, a subsidiary of American Electric Power, Inc.
AFUDC	Allowance for Funds Used During Construction
AMS	Advanced Meter System
AOCI	Accumulated Other Comprehensive Income
APS	Arizona Public Service Company, the operator and a co-owner of PVNGS and Four Corners
ARO	Asset Retirement Obligation
ARP	Alternative Revenue Program
ASU	Accounting Standards Update
Avangrid	Avangrid, Inc., a New York corporation
BART	Best Available Retrofit Technology
Board	Board of Directors of PNMR
BSER	Best system of emission reduction technology
CAA	Clean Air Act
CAISO	California Independent System Operator
CCAE	Coalition for Clean Affordable Energy
CCN	Certificate of Convenience and Necessity
CCR	Coal Combustion Residuals
CFIUS	Committee on Foreign Investment in the United States
CO2	Carbon Dioxide
COVID-19	Novel coronavirus global pandemic
DC Circuit	United States Court of Appeals for the District of Columbia Circuit
DCRF	TNMP’s applications for a distribution cost recovery factor
DOE	United States Department of Energy
Effective Time	The time the Merger is consummated
EGU	Electric Generating Unit
EIM	Western Energy Imbalance Market developed and operated by CAISO
ELG	Effluent Limitation Guidelines
End Date	The date at which the Merger Agreement may be terminated if the Effective Time has not yet occurred; January 20, 2022, subsequently extended to April 20, 2023, then July 20, 2023, and currently December 31, 2023
Energy Transition Charge	Rate rider established to collect non-bypassable customer charges for repayment of the Securitized Bonds
EPA	United States Environmental Protection Agency
ERCOT	Electric Reliability Council of Texas
ESG	Environmental, Social, and Governance principles
ETA	The New Mexico Energy Transition Act
ETBC I	PNM Energy Transition Bond Company I, LLC, formed on August 25, 2023
EUEA	The New Mexico Efficient Use of Energy Act
Exchange Act	Securities Exchange Act of 1934
FASB	Financial Accounting Standards Board
FCC	Federal Communications Commission
FERC	Federal Energy Regulatory Commission
Four Corners	Four Corners Power Plant
Four Corners Abandonment Application	PNM’s January 8, 2021 application for approval for the abandonment of Four Corners and issuance of a securitized financing order
Four Corners CSA	Four Corners’ coal supply contract with NTEC
Four Corners Purchase and Sale Agreement	PNM’s pending sale of its 13% ownership interest in Four Corners to NTEC
FPPAC	Fuel and Purchased Power Adjustment Clause
FTY	Future Test Year
GAAP	Generally Accepted Accounting Principles in the United States of America
GHG	Greenhouse Gas Emissions

4

Grid Modernization Application	PNM’s October 3, 2022 application for approval of grid modernization investments of approximately $344 million for the first six years of a broader 11-year strategy
GWh	Gigawatt hours
HSR Act	Hart-Scott Rodino Antitrust Improvement Act of 1976
Iberdrola	Iberdrola, S.A., a corporation organized under the laws of the Kingdom of Spain, and 81.5% owner of Avangrid
INDC	Intended Nationally Determined Contribution
IRA	Inflation Reduction Act
IRP	Integrated Resource Plan
IRS	Internal Revenue Service
Joint Applicants	PNM, PNMR, Merger Sub, Avangrid and Iberdrola
kV	Kilovolt
KW	Kilowatt
KWh	Kilowatt Hour
La Joya Wind II	La Joya Wind Facility generating 140 MW of output that became operational in June 2021
Leased Interest	Leased capacity in PVNGS Unit 1 and Unit 2
MD&A	Management’s Discussion and Analysis of Financial Condition and Results of Operations
Merger	The merger of Merger Sub with and into PNMR pursuant to the Merger Agreement, with PNMR surviving the Merger as a direct, wholly-owned subsidiary of Avangrid
Merger Agreement	The Agreement and Plan of Merger, dated October 20, 2020, between PNMR, Avangrid and Merger Sub, as amended by the amendments to the Merger Agreement dated January 3, 2022, April 12, 2023, and June 19, 2023
Merger Sub	NM Green Holdings, Inc., a New Mexico corporation and wholly-owned subsidiary of Avangrid which will merge with and into PNMR at the effective time of the Merger (defined below)
Meta	Meta Platform, Inc., formerly known as Facebook Inc.
MMBTU	Million BTUs
Moody’s	Moody’s Investor Services, Inc.
MW	Megawatt
MWh	Megawatt Hour
NAAQS	National Ambient Air Quality Standards
NDT	Nuclear Decommissioning Trusts for PVNGS
NEE	New Energy Economy
NERC	North American Electric Reliability Corporation
New Mexico Wind	New Mexico Wind Energy Center
NM 2015 Rate Case	Request for a General Increase in Electric Rates Filed by PNM on August 27, 2015
NM 2016 Rate Case	Request for a General Increase in Electric Rates Filed by PNM on December 7, 2016
NM AREA	New Mexico Affordable Reliable Energy Alliance, formerly New Mexico Industrial Energy Consumers Inc.
NM District Court	United States District Court for the District of New Mexico
NM Supreme Court	New Mexico Supreme Court
NMAG	New Mexico Attorney General
NMED	New Mexico Environment Department
NMMMD	The Mining and Minerals Division of the New Mexico Energy, Minerals and Natural Resources Department
NMPRC	New Mexico Public Regulation Commission
NMRD	NM Renewable Development, LLC, owned 50% each by PNMR Development and AEP OnSite Partners, LLC
NOx	Nitrogen Oxides
NPDES	National Pollutant Discharge Elimination System
NRC	United States Nuclear Regulatory Commission
NTEC	Navajo Transitional Energy Company, LLC, an entity owned by the Navajo Nation
OCI	Other Comprehensive Income
OPEB	Other Post-Employment Benefits
OSM	United States Office of Surface Mining Reclamation and Enforcement
Paris Agreement	A legally binding international treaty on climate change adopted on December 12, 2015
Pattern Wind	Pattern New Mexico Wind, LLC, an affiliate of Western Spirit and Pattern Development
PCRBs	Pollution Control Revenue Bonds
PM	Particulate Matter
PNM	Public Service Company of New Mexico and Subsidiaries
PNM New Mexico Credit Facility	PNM’s $40.0 million Unsecured Revolving Credit Facility

5

PNM 2022 Delayed- Draw Term Loan	PNM’s $225.0 million Unsecured Term Loan that matures February 5, 2024
PNM 2023 Note Purchase Agreement	PNM’s agreement for sale of PNM’s 2023 SUNs
PNM 2023 SUNs	PNM’s $200.0 million Senior Unsecured Notes issued on April 28, 2023
PNM Revolving Credit Facility	PNM’s $400.0 million Unsecured Revolving Credit Facility
PNMR	PNM Resources, Inc. and Subsidiaries
PNMR 2021 Delayed-Draw Term Loan	PNMR’s $1.0 billion Unsecured Delayed-Draw Term Loan that matures on May 18, 2025
PNMR 2022 ATM Program	PNMR’s distribution agreement pursuant to which the Company may sell, from time to time, up to an aggregate sales price of $200.0 million of its common stock, no par value, through the sales agents
PNMR 2023 Term Loan	PNMR’s $500.0 million term loan that matures on June 30, 2026
PNMR Development	PNMR Development and Management Company, an unregulated wholly-owned subsidiary of PNMR
PNMR Revolving Credit Facility	PNMR’s $300.0 million Unsecured Revolving Credit Facility
PPA	Power Purchase Agreement
PUCT	Public Utility Commission of Texas
PV	Photovoltaic
PVNGS	Palo Verde Nuclear Generating Station
PVNGS Leased Interest Abandonment Application	Application with the NMPRC requesting approval for the decertification and abandonment of 114MW of leased PVNGS capacity
REA	New Mexico’s Renewable Energy Act of 2004
RECs	Renewable Energy Certificates
Red Mesa Wind	Red Mesa Wind Energy Center
REP	Retail Electricity Provider
ROE	Return on Equity
RPS	Renewable Energy Portfolio Standard
S&P	Standard and Poor’s Ratings Services
SEC	United States Securities and Exchange Commission
Securitized Bonds	Energy transition bonds
SIP	State Implementation Plan
SJCC	San Juan Coal Company
SJGS	San Juan Generating Station
SJGS Abandonment Application	PNM’s July 1, 2019 consolidated application seeking NMPRC approval to retire PNM’s share of SJGS in 2022, for related replacement generating resources, and for the issuance of Securitized Bonds under the ETA
SJGS CSA	San Juan Generating Station Coal Supply Agreement
SO2	Sulfur Dioxide
SOFR	Secured Overnight Financing Rate
SRP	Salt River Project
SUNs	Senior Unsecured Notes
Tax Act	Federal tax reform legislation enacted on December 22, 2017, commonly referred to as the Tax Cuts and Jobs Act
TECA	Texas Electric Choice Act
Tenth Circuit	United States Court of Appeals for the Tenth Circuit
TEP	Transportation Electrification Program
TNMP	Texas-New Mexico Power Company and Subsidiaries
TNMP 2018 Rate Case	TNMP’s General Rate Case Application filed on May 30, 2018
TNMP 2022 Bonds	TNMP’s First Mortgage Bonds to be issued under the TNMP 2022 Bond Purchase Agreement
TNMP 2022 Bond Purchase Agreement	TNMP’s Agreement for the sale of an aggregate $160.0 million of TNMP’s 2022 Bonds
TNMP 2023 Bonds	TNMP’s First Mortgage Bonds to be issued under the TNMP 2023 Bond Purchase Agreement
TNMP 2023 Bond Purchase Agreement	TNMP’s Agreement for the sale of an aggregate $185.0 million of TNMP’s 2023 Bonds
TNMP Revolving Credit Facility	TNMP’s $75.0 million Secured Revolving Credit Facility ($100.0 million as of May 13, 2022)

6

Tri-State	Tri-State Generation and Transmission Association, Inc.
U.S.	The Unites States of America
US Supreme Court	United States Supreme Court
Valencia	Valencia Energy Facility
Western Spirit Line	An approximately 150-mile 345-kV transmission line that PNM purchased in December 2021
Westmoreland	Westmoreland Coal Company
WFB LOC Facility	Letter of credit arrangements with Wells Fargo Bank, N.A., entered into in August 2020
WRA	Western Resource Advocates
WSJ LLC	Westmoreland San Juan, LLC, a subsidiary of Westmoreland Mining Holdings, LLC, and current owner of SJCC

7

PART I. FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

PNM RESOURCES, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS

(Unaudited)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(In thousands, except per share amounts)
Electric Operating Revenues	$	505,851	$	729,888	$	1,527,084	$	1,673,736
Operating Expenses:
Cost of energy	210,313		334,339		624,451		698,349
Administrative and general	58,481		58,125		167,630		165,328
Energy production costs	20,388		34,469		68,345		110,534
Regulatory disallowances and restructuring costs	2,315		(567)		6,046		832
Depreciation and amortization	80,192		76,570		237,405		229,103
Transmission and distribution costs	25,078		21,538		72,739		61,160
Taxes other than income taxes	22,432		22,651		72,395		71,207
Total operating expenses	419,199		547,125		1,249,011		1,336,513
Operating income	86,652		182,763		278,073		337,223
Other Income and Deductions:
Interest income	5,366		3,969		15,568		11,588
Gains (losses) on investment securities	(8,404)		(15,736)		1,815		(84,104)
Other income	8,428		5,364		17,121		14,845
Other (deductions)	(4,555)		(1,647)		(10,562)		(7,529)
Net other income and deductions	835		(8,050)		23,942		(65,200)
Interest Charges	49,838		34,526		136,660		89,963
Earnings before Income Taxes	37,649		140,187		165,355		182,060
Income Taxes	(5,267)		13,450		12,742		16,982
Net Earnings	42,916		126,737		152,613		165,078
(Earnings) Attributable to Valencia Non-controlling Interest	(5,058)		(4,172)		(14,172)		(10,897)
Preferred Stock Dividend Requirements of Subsidiary	(132)		(132)		(396)		(396)
Net Earnings Attributable to PNMR	$	37,726	$	122,433	$	138,045	$	153,785
Net Earnings Attributable to PNMR per Common Share:
Basic	$	0.44	$	1.42	$	1.60	$	1.79
Diluted	$	0.44	$	1.42	$	1.60	$	1.78
Dividends Declared per Common Share	$	0.3675	$	0.3475	$	1.1025	$	1.0425

The accompanying notes, as they relate to PNMR, are an integral part of these condensed consolidated financial statements.

8

PNM RESOURCES, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(In thousands)
Net Earnings	$	42,916	$	126,737	$	152,613	$	165,078
Other Comprehensive Income:
Unrealized Gains on Available-for-Sale Debt Securities:
Net increase (decrease) in unrealized holding gains arising during the period, net of income tax (expense) benefit of $526, $(326), $(632), and $2,075	(1,543)		956		1,859		(6,095)
Reclassification adjustment for (gains) included in net earnings, net of income tax expense of $389, $129, $1,044, and $870	(1,142)		(380)		(3,067)		(2,556)
Pension Liability Adjustment:
Reclassification adjustment for amortization of experience losses recognized as net periodic benefit cost, net of income tax (benefit) of $(303), $(451), $(909), and $(1,353)	891		1,325		2,673		3,975
Fair Value Adjustment for Cash Flow Hedges:
Change in fair market value, net of income tax (expense) of $1,512, $(1,764), $606, and $(2,640)	(4,441)		5,179		(1,780)		7,751
Reclassification adjustment for gains (losses) included in net earnings, net of income tax (expense) benefit of $(1,039), $148, $(1,343), and $449	3,050		(434)		3,943		(1,318)
Total Other Comprehensive Income (Loss)	(3,185)		6,646		3,628		1,757
Comprehensive Income	39,731		133,383		156,241		166,835
Comprehensive (Income) Attributable to Valencia Non-controlling Interest	(5,058)		(4,172)		(14,172)		(10,897)
Preferred Stock Dividend Requirements of Subsidiary	(132)		(132)		(396)		(396)
Comprehensive Income Attributable to PNMR	$	34,541	$	129,079	$	141,673	$	155,542

The accompanying notes, as they relate to PNMR, are an integral part of these condensed consolidated financial statements.

9

PNM RESOURCES, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

	Nine Months Ended September 30,
	2023		2022
	(In thousands)
Cash Flows From Operating Activities:
Net earnings	$	152,613	$	165,078
Adjustments to reconcile net earnings to net cash flows from operating activities:
Depreciation and amortization	262,557		255,808
Deferred income tax expense	10,874		15,036
(Gains) losses on investment securities	(1,815)		84,104
Stock based compensation expense	5,871		5,972
Regulatory disallowances and restructuring costs	6,046		832
Allowance for equity funds used during construction	(10,075)		(9,232)
Other, net	476		1,323
Changes in certain assets and liabilities:
Accounts receivable and unbilled revenues	972		(66,713)
Materials, supplies, and fuel stock	(16,657)		(6,630)
Other current assets	(77,016)		3,687
Other assets	(13,613)		6,676
Accounts payable	(12,222)		11,845
Accrued interest and taxes	9,686		17,875
Other current liabilities	116,887		(26,082)
Other liabilities	(21,980)		(32,083)
Net cash flows from operating activities	412,604		427,496
Cash Flows From Investing Activities:
Additions to utility plant and non-utility plant	(807,932)		(702,878)
Proceeds from sale of plant assets (Note 13)	32,654		—
Proceeds from sales of investment securities	412,574		323,251
Purchases of investment securities	(423,467)		(332,490)
Investments in NMRD	(25,750)		—
Other, net	44		692
Net cash flows used in investing activities	(811,877)		(711,425)

The accompanying notes, as they relate to PNMR, are an integral part of these condensed consolidated financial statements.

10

PNM RESOURCES, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

	Nine Months Ended September 30,
	2023		2022
	(In thousands)
Cash Flows From Financing Activities:
Revolving credit facilities borrowings (repayments), net	$	173,500	$	(2,500)
Long-term borrowings	1,015,000		558,000
Repayment of long-term debt	(685,000)		(179,500)
Awards of common stock	(9,631)		(7,846)
Dividends paid	(95,029)		(89,879)
Valencia’s transactions with its owner	(15,993)		(12,455)
Transmission interconnection and security deposit arrangements	46,254		76,696
Refunds paid under transmission interconnection and security deposit arrangements	(19,610)		(50,401)
Debt issuance costs and other, net	(6,528)		(3,668)
Net cash flows from financing activities	402,963		288,447
Change in Cash and Cash Equivalents	3,690		4,518
Cash and Cash Equivalents at Beginning of Period	4,078		1,104
Cash and Cash Equivalents at End of Period	$	7,768	$	5,622
Supplemental Cash Flow Disclosures:
Interest paid, net of amounts capitalized	$	121,876	$	79,246
Income taxes paid (refunded), net	$	1,400	$	904
Supplemental schedule of noncash investing activities:
Decrease in accrued plant additions	$	46,452	$	56,948

The accompanying notes, as they relate to PNMR, are an integral part of these condensed consolidated financial statements.

11

PNM RESOURCES, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

	September 30, 2023		December 31, 2022
	(In thousands)
ASSETS
Current Assets:
Cash and cash equivalents	$	7,768	$	4,078
Accounts receivable, net of allowance for credit losses of $4,549 and $4,925	175,193		183,669
Unbilled revenues	68,271		63,473
Other receivables	25,719		20,320
Materials, supplies, and fuel stock	83,391		66,733
Regulatory assets	99,388		20,265
Prepaid assets	21,705		18,465
Income taxes receivable	1,883		2,351
Other current assets	5,909		31,624
Total current assets	489,227		410,978
Other Property and Investments:
Investment securities	421,377		417,476
Equity investment in NMRD	118,569		90,620
Other investments	172		177
Non-utility property, net	29,584		26,841
Total other property and investments	569,702		535,114
Utility Plant:
Plant in service, held for future use, and to be abandoned	9,344,655		9,164,564
Less accumulated depreciation and amortization	2,728,523		2,659,952
	6,616,132		6,504,612
Construction work in progress	717,353		372,988
Nuclear fuel, net of accumulated amortization of $34,759 and $43,985	77,368		95,223
Net utility plant	7,410,853		6,972,823
Deferred Charges and Other Assets:
Regulatory assets	924,487		846,686
Goodwill	278,297		278,297
Operating lease right-of-use assets, net of accumulated amortization	185,989		55,982
Other deferred charges	192,286		157,497
Total deferred charges and other assets	1,581,059		1,338,462
	$	10,050,841	$	9,257,377

The accompanying notes, as they relate to PNMR, are an integral part of these condensed consolidated financial statements.

12

PNM RESOURCES, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

	September 30, 2023		December 31, 2022
	(In thousands, except share information)
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current Liabilities:
Short-term debt	$	405,500	$	232,000
Current installments of long-term debt	502,434		184,793
Accounts payable	157,035		215,708
Customer deposits	6,259		6,117
Accrued interest and taxes	86,001		76,783
Regulatory liabilities	122,895		17,002
Operating lease liabilities	11,983		18,781
Dividends declared	31,676		31,676
Transmission interconnection arrangement liabilities	65,063		20,473
Other current liabilities	89,727		87,037
Total current liabilities	1,478,573		890,370
Long-term Debt, net of Unamortized Premiums, Discounts, and Debt Issuance Costs	3,902,687		3,892,594
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	859,173		822,831
Regulatory liabilities	764,360		755,202
Asset retirement obligations	228,343		223,377
Accrued pension liability and postretirement benefit cost	27,748		32,799
Operating lease liabilities	168,849		41,336
Other deferred credits	323,195		342,413
Total deferred credits and other liabilities	2,371,668		2,217,958
Total liabilities	7,752,928		7,000,922
Commitments and Contingencies (Note 11)
Cumulative Preferred Stock of Subsidiary
without mandatory redemption requirements ($100 stated value; 10,000,000 shares authorized; issued and outstanding 115,293 shares)	11,529		11,529
Equity:
PNMR common stockholders’ equity:
Common stock (no par value; 120,000,000 shares authorized; issued and outstanding 85,834,874 shares)	1,425,342		1,429,102
Accumulated other comprehensive income (loss), net of income taxes	(62,420)		(66,048)
Retained earnings	872,289		828,878
Total PNMR common stockholders’ equity	2,235,211		2,191,932
Non-controlling interest in Valencia	51,173		52,994
Total equity	2,286,384		2,244,926
	$	10,050,841	$	9,257,377

The accompanying notes, as they relate to PNMR, are an integral part of these condensed consolidated financial statements.

13

PNM RESOURCES, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(Unaudited)

	Attributable to PNMR								Non- controlling Interest in Valencia
	Common Stock		AOCI		Retained Earnings		Total PNMR Common Stockholders’ Equity				Total Equity
	(In thousands)
Balance at June 30, 2023	$	1,423,827	$	(59,235)	$	897,651	$	2,262,243	$	51,353	$	2,313,596
Net earnings before subsidiary preferred stock dividends	—		—		37,858		37,858		5,058		42,916
Total other comprehensive income (loss)	—		(3,185)		—		(3,185)		—		(3,185)
Subsidiary preferred stock dividends	—		—		(132)		(132)		—		(132)
Dividends declared on common stock	—		—		(63,088)		(63,088)		—		(63,088)
Awards of common stock	(13)		—		—		(13)		—		(13)
Stock based compensation expense	1,528		—		—		1,528		—		1,528
Valencia’s transactions with its owner	—		—		—		—		(5,238)		(5,238)
Balance at September 30, 2023	$	1,425,342	$	(62,420)	$	872,289	$	2,235,211	$	51,173	$	2,286,384
Balance at December 31, 2022	$	1,429,102	$	(66,048)	$	828,878	$	2,191,932	$	52,994	$	2,244,926
Net earnings before subsidiary preferred stock dividends	—		—		138,441		138,441		14,172		152,613
Total other comprehensive income	—		3,628		—		3,628		—		3,628
Subsidiary preferred stock dividends	—		—		(396)		(396)		—		(396)
Dividends declared on common stock	—		—		(94,634)		(94,634)		—		(94,634)
Awards of common stock	(9,631)		—		—		(9,631)		—		(9,631)
Stock based compensation expense	5,871		—		—		5,871		—		5,871
Valencia’s transactions with its owner	—		—		—		—		(15,993)		(15,993)
Balance at September 30, 2023	$	1,425,342	$	(62,420)	$	872,289	$	2,235,211	$	51,173	$	2,286,384

Balance at June 30, 2022	$	1,426,448	$	(76,825)	$	781,899	$	2,131,522	$	54,165	$	2,185,687
Net earnings before subsidiary preferred stock dividends	—		—		122,565		122,565		4,172		126,737
Total other comprehensive income	—		6,646		—		6,646		—		6,646
Subsidiary preferred stock dividends	—		—		(132)		(132)		—		(132)
Dividends declared on common stock	—		—		(59,655)		(59,655)		—		(59,655)
Awards of common stock	(221)		—		—		(221)		—		(221)
Stock based compensation expense	1,156		—		—		1,156		—		1,156
Valencia’s transactions with its owner	—		—		—		—		(4,490)		(4,490)
Balance at September 30, 2022	$	1,427,383	$	(70,179)	$	844,677	$	2,201,881	$	53,847	$	2,255,728
Balance at December 31, 2021	$	1,429,257	$	(71,936)	$	810,203	$	2,167,524	$	55,405	$	2,222,929
Net earnings before subsidiary preferred stock dividends	—		—		154,181		154,181		10,897		165,078
Total other comprehensive income	—		1,757		—		1,757		—		1,757
Subsidiary preferred stock dividends	—		—		(396)		(396)		—		(396)
Dividends declared on common stock	—		—		(119,311)		(119,311)		—		(119,311)
Awards of common stock	(7,846)		—		—		(7,846)		—		(7,846)
Stock based compensation expense	5,972		—		—		5,972		—		5,972
Valencia’s transactions with its owner	—		—		—		—		(12,455)		(12,455)
Balance at September 30, 2022	$	1,427,383	$	(70,179)	$	844,677	$	2,201,881	$	53,847	$	2,255,728

The accompanying notes, as they relate to PNMR, are an integral part of these condensed consolidated financial statements.

14

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

A WHOLLY-OWNED SUBSIDIARY OF PNM RESOURCES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS

(Unaudited)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(In thousands)
Electric Operating Revenues	$	350,334	$	597,337	$	1,118,741	$	1,312,800
Operating Expenses:
Cost of energy	174,362		303,351		517,824		606,129
Administrative and general	53,460		51,900		151,178		149,361
Energy production costs	20,388		34,469		68,345		110,534
Regulatory disallowances and restructuring costs	2,315		(567)		6,046		832
Depreciation and amortization	44,537		45,361		132,287		137,132
Transmission and distribution costs	15,326		12,549		43,968		37,678
Taxes other than income taxes	9,250		10,359		36,078		36,768
Total operating expenses	319,638		457,422		955,726		1,078,434
Operating income	30,696		139,915		163,015		234,366
Other Income and Deductions:
Interest income	5,323		3,888		15,542		10,288
Gains (losses) on investment securities	(8,404)		(15,736)		1,815		(84,104)
Other income	3,484		2,086		8,656		7,997
Other (deductions)	(2,678)		(793)		(7,341)		(5,368)
Net other income and deductions	(2,275)		(10,555)		18,672		(71,187)
Interest Charges	22,354		15,467		61,242		44,562
Earnings before Income Taxes	6,067		113,893		120,445		118,617
Income Taxes (Benefits)	(7,199)		12,121		12,041		11,762
Net Earnings	13,266		101,772		108,404		106,855
(Earnings) Attributable to Valencia Non-controlling Interest	(5,058)		(4,172)		(14,172)		(10,897)
Net Earnings Attributable to PNM	8,208		97,600		94,232		95,958
Preferred Stock Dividend Requirements	(132)		(132)		(396)		(396)
Net Earnings Available for PNM Common Stock	$	8,076	$	97,468	$	93,836	$	95,562

The accompanying notes, as they relate to PNM, are an integral part of these condensed consolidated financial statements.

15

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

A WHOLLY-OWNED SUBSIDIARY OF PNM RESOURCES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(In thousands)
Net Earnings	$	13,266	$	101,772	$	108,404	$	106,855
Other Comprehensive Income:
Unrealized Gains on Available-for-Sale Debt Securities:
Net increase (decrease) in unrealized holding gains arising during the period, net of income tax (expense) benefit of $526, $(326), $(632) and $2,075	(1,543)		956		1,859		(6,095)
Reclassification adjustment for (gains) included in net earnings, net of income tax expense of $389, $129, $1,044, and $870	(1,142)		(380)		(3,067)		(2,556)
Pension Liability Adjustment:
Reclassification adjustment for amortization of experience losses recognized as net periodic benefit cost, net of income tax (benefit) of $(303), $(451), $(909), and $(1,353)	891		1,325		2,673		3,975
Total Other Comprehensive Income (Loss)	(1,794)		1,901		1,465		(4,676)
Comprehensive Income	11,472		103,673		109,869		102,179
Comprehensive (Income) Attributable to Valencia Non-controlling Interest	(5,058)		(4,172)		(14,172)		(10,897)
Comprehensive Income Attributable to PNM	$	6,414	$	99,501	$	95,697	$	91,282

The accompanying notes, as they relate to PNM, are an integral part of these condensed consolidated financial statements.

16

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

A WHOLLY-OWNED SUBSIDIARY OF PNM RESOURCES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

	Nine Months Ended September 30,
	2023		2022
	(In thousands)
Cash Flows From Operating Activities:
Net earnings	$	108,404	$	106,855
Adjustments to reconcile net earnings to net cash flows from operating activities:
Depreciation and amortization	150,903		161,303
Deferred income tax expense	12,041		11,762
(Gains) losses on investment securities	(1,815)		84,104
Regulatory disallowances and restructuring costs	6,046		832
Allowance for equity funds used during construction	(7,263)		(6,793)
Other, net	2,641		2,839
Changes in certain assets and liabilities:
Accounts receivable and unbilled revenues	15,648		(45,252)
Materials, supplies, and fuel stock	(12,300)		(3,809)
Other current assets	(81,653)		885
Other assets	(9,988)		7,958
Accounts payable	(11,073)		20,308
Accrued interest and taxes	11,592		14,799
Other current liabilities	115,984		(35,503)
Other liabilities	(20,451)		(24,717)
Net cash flows from operating activities	278,716		295,571
Cash Flows From Investing Activities:
Utility plant additions	(424,292)		(322,412)
Proceeds from sale of plant assets (Note 13)	32,654		—
Proceeds from sales of investment securities	412,574		323,251
Purchases of investment securities	(423,467)		(332,490)
Other, net	6		492
Net cash flows used in investing activities	(402,525)		(331,159)

The accompanying notes, as they relate to PNM, are an integral part of these condensed consolidated financial statements.

17

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

A WHOLLY-OWNED SUBSIDIARY OF PNM RESOURCES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

	Nine Months Ended September 30,
	2023		2022
	(In thousands)
Cash Flows From Financing Activities:
Revolving credit facilities borrowings (repayments), net	$	(19,000)	$	(7,400)
Long-term borrowings	330,000		298,000
Repayment of long-term debt	(185,000)		(179,500)
Dividends paid	(396)		(85,396)
Valencia’s transactions with its owner	(15,993)		(12,455)
Transmission interconnection and security deposit arrangements	35,254		70,296
Refunds paid under transmission interconnection and security deposit arrangements	(16,110)		(41,401)
Debt issuance costs and other, net	(3,769)		(2,201)
Net cash flows from financing activities	124,986		39,943
Change in Cash and Cash Equivalents	1,177		4,355
Cash and Cash Equivalents at Beginning of Period	2,985		19
Cash and Cash Equivalents at End of Period	$	4,162	$	4,374
Supplemental Cash Flow Disclosures:
Interest paid, net of amounts capitalized	$	46,584	$	37,269
Income taxes paid (refunded), net	$	—	$	—
Supplemental schedule of noncash investing activities:
Decrease in accrued plant additions	$	30,837	$	21,069

The accompanying notes, as they relate to PNM, are an integral part of these condensed consolidated financial statements.

18

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

A WHOLLY-OWNED SUBSIDIARY OF PNM RESOURCES, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

	September 30, 2023		December 31, 2022
	(In thousands)
ASSETS
Current Assets:
Cash and cash equivalents	$	4,162	$	2,985
Accounts receivable, net of allowance for credit losses of $4,549 and $4,925	130,997		151,386
Unbilled revenues	47,317		45,282
Other receivables	22,508		13,877
Affiliate receivables	9,265		8,868
Materials, supplies, and fuel stock	68,191		55,890
Regulatory assets	99,230		18,333
Prepaid assets	12,628		10,085
Income taxes receivable	18,233		18,233
Other current assets	2,094		20,706
Total current assets	414,625		345,645
Other Property and Investments:
Investment securities	421,377		417,476
Other investments	70		76
Non-utility property, net	14,335		11,695
Total other property and investments	435,782		429,247
Utility Plant:
Plant in service, held for future use, and to be abandoned	6,047,974		6,007,464
Less accumulated depreciation and amortization	1,953,246		1,908,644
	4,094,728		4,098,820
Construction work in progress	472,864		300,772
Nuclear fuel, net of accumulated amortization of $34,759 and $43,985	77,368		95,223
Net utility plant	4,644,960		4,494,815
Deferred Charges and Other Assets:
Regulatory assets	846,107		763,941
Goodwill	51,632		51,632
Operating lease right-of-use assets, net of accumulated amortization	183,889		52,556
Other deferred charges	154,857		134,330
Total deferred charges and other assets	1,236,485		1,002,459
	$	6,731,852	$	6,272,166

The accompanying notes, as they relate to PNM, are an integral part of these condensed consolidated financial statements.

19

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

A WHOLLY-OWNED SUBSIDIARY OF PNM RESOURCES, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

	September 30, 2023		December 31, 2022
	(In thousands, except share information)
LIABILITIES AND STOCKHOLDER’S EQUITY
Current Liabilities:
Short-term debt	$	166,900	$	185,900
Current installments of long-term debt	422,513		184,793
Accounts payable	121,612		163,522
Affiliate payables	12,697		14,919
Customer deposits	6,259		6,117
Accrued interest and taxes	47,389		35,797
Regulatory liabilities	120,833		7,913
Operating lease liabilities	10,992		17,239
Dividends declared	132		132
Transmission interconnection arrangement liabilities	65,063		20,473
Other current liabilities	54,491		55,350
Total current liabilities	1,028,881		692,155
Long-term Debt, net of Unamortized Premiums, Discounts, and Debt Issuance Costs	1,722,687		1,816,107
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	710,092		682,040
Regulatory liabilities	551,747		556,989
Asset retirement obligations	227,463		222,549
Accrued pension liability and postretirement benefit cost	27,208		32,007
Operating lease liabilities	167,891		39,633
Other deferred credits	230,550		258,833
Total deferred credits and liabilities	1,914,951		1,792,051
Total liabilities	4,666,519		4,300,313
Commitments and Contingencies (Note 11)
Cumulative Preferred Stock
without mandatory redemption requirements ($100 stated value; 10,000,000 shares authorized; issued and outstanding 115,293 shares)	11,529		11,529
Equity:
PNM common stockholder’s equity:
Common stock (no par value; 40,000,000 shares authorized; issued and outstanding 39,117,799 shares)	1,547,918		1,547,918
Accumulated other comprehensive income (loss), net of income taxes	(72,870)		(74,335)
Retained earnings	527,583		433,747
Total PNM common stockholder’s equity	2,002,631		1,907,330
Non-controlling interest in Valencia	51,173		52,994
Total equity	2,053,804		1,960,324
	$	6,731,852	$	6,272,166

The accompanying notes, as they relate to PNM, are an integral part of these condensed consolidated financial statements.

20

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

A WHOLLY-OWNED SUBSIDIARY OF PNM RESOURCES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(Unaudited)

	Attributable to PNM
							Total PNM Common Stockholder’s Equity		Non- controlling  Interest in Valencia
	Common Stock		AOCI		Retained Earnings						Total Equity
	(In thousands)
Balance at June 30, 2023	$	1,547,918	$	(71,076)	$	519,507	$	1,996,349	$	51,353	$	2,047,702
Net earnings	—		—		8,208		8,208		5,058		13,266
Total other comprehensive income (loss)	—		(1,794)		—		(1,794)		—		(1,794)
Dividends declared on preferred stock	—		—		(132)		(132)		—		(132)
Valencia’s transactions with its owner	—		—		—		—		(5,238)		(5,238)
Balance at September 30, 2023	$	1,547,918	$	(72,870)	$	527,583	$	2,002,631	$	51,173	$	2,053,804
Balance at December 31, 2022	$	1,547,918	$	(74,335)	$	433,747	$	1,907,330	$	52,994	$	1,960,324
Net earnings	—		—		94,232		94,232		14,172		108,404
Total other comprehensive income	—		1,465		—		1,465		—		1,465
Dividends declared on preferred stock	—		—		(396)		(396)		—		(396)
Valencia’s transactions with its owner	—		—		—		—		(15,993)		(15,993)
Balance at September 30, 2023	$	1,547,918	$	(72,870)	$	527,583	$	2,002,631	$	51,173	$	2,053,804

Balance at June 30, 2022	$	1,547,918	$	(78,513)	$	481,971	$	1,951,376	$	54,165	$	2,005,541
Net earnings	—		—		97,600		97,600		4,172		101,772
Total other comprehensive income	—		1,901		—		1,901		—		1,901
Dividends declared on preferred stock	—		—		(132)		(132)		—		(132)
Dividends declared on common stock	—		—		(85,000)		(85,000)		—		(85,000)
Valencia’s transactions with its owner	—		—		—		—		(4,490)		(4,490)
Balance at September 30, 2022	$	1,547,918	$	(76,612)	$	494,439	$	1,965,745	$	53,847	$	2,019,592
Balance at December 31, 2021	$	1,547,918	$	(71,936)	$	483,877	$	1,959,859	$	55,405	$	2,015,264
Net earnings	—		—		95,958		95,958		10,897		106,855
Total other comprehensive income (loss)	—		(4,676)		—		(4,676)		—		(4,676)
Dividends declared on preferred stock	—		—		(396)		(396)		—		(396)
Dividends declared on common stock	—		—		(85,000)		(85,000)		—		(85,000)
Valencia’s transactions with its owner	—		—		—		—		(12,455)		(12,455)
Balance at September 30, 2022	$	1,547,918	$	(76,612)	$	494,439	$	1,965,745	$	53,847	$	2,019,592

The accompanying notes, as they relate to PNM, are an integral part of these condensed consolidated financial statements.

21

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

A WHOLLY-OWNED SUBSIDIARY OF PNM RESOURCES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS

(Unaudited)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(In thousands)
Electric Operating Revenues	$	155,517	$	132,551	$	408,343	$	360,936
Operating Expenses:
Cost of energy	35,951		30,988		106,627		92,220
Administrative and general	13,440		12,548		40,608		35,746
Depreciation and amortization	28,357		24,960		83,746		72,914
Transmission and distribution costs	9,752		8,989		28,771		23,482
Taxes other than income taxes	11,863		11,229		31,923		30,495
Total operating expenses	99,363		88,714		291,675		254,857
Operating income	56,154		43,837		116,668		106,079
Other Income and Deductions:
Interest income	178		148		413		1,435
Other income	3,476		2,691		5,754		5,151
Other (deductions)	(1,028)		(448)		(1,658)		(848)
Net other income and deductions	2,626		2,391		4,509		5,738
Interest Charges	12,095		9,851		33,932		28,017
Earnings before Income Taxes	46,685		36,377		87,245		83,800
Income Taxes	7,181		4,946		13,076		11,258
Net Earnings	$	39,504	$	31,431	$	74,169	$	72,542

The accompanying notes, as they relate to TNMP, are an integral part of these condensed consolidated financial statements.

22

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

A WHOLLY-OWNED SUBSIDIARY OF PNM RESOURCES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

	Nine Months Ended September 30,
	2023		2022
	(In thousands)
Cash Flows From Operating Activities:
Net earnings	$	74,169	$	72,542
Adjustments to reconcile net earnings to net cash flows from operating activities:
Depreciation and amortization	84,300		73,536
Deferred income tax (benefit)	431		(3,587)
Allowance for equity funds used during construction and other, net	(2,811)		(2,441)
Changes in certain assets and liabilities:
Accounts receivable and unbilled revenues	(14,676)		(21,461)
Materials and supplies	(4,357)		(2,821)
Other current assets	4,914		2,696
Other assets	1,322		(387)
Accounts payable	2,224		(3,791)
Accrued interest and taxes	8,559		14,449
Other current liabilities	(2,932)		7,769
Other liabilities	(650)		(4,324)
Net cash flows from operating activities	150,493		132,180
Cash Flows From Investing Activities:
Utility plant additions	(343,269)		(359,441)
Net cash flows used in investing activities	(343,269)		(359,441)
Cash Flows From Financing Activities:
Revolving credit facilities borrowings (repayments), net	3,100		2,600
Long-term borrowings	185,000		160,000
Equity contribution from parent	—		68,000
Transmission interconnection and security deposit arrangements	11,000		6,400
Refunds paid under transmission interconnection and security deposit arrangements	(3,500)		(9,000)
Debt issuance costs and other, net	(1,671)		(739)
Net cash flows from financing activities	193,929		227,261
Change in Cash and Cash Equivalents	1,153		—
Cash and Cash Equivalents at Beginning of Period	—		—
Cash and Cash Equivalents at End of Period	$	1,153	$	—
Supplemental Cash Flow Disclosures:
Interest paid, net of amounts capitalized	$	30,868	$	26,810
Income taxes paid (refunded), net	$	1,400	$	904
Supplemental schedule of noncash investing activities:
Decrease in accrued plant additions	$	6,640	$	24,773

The accompanying notes, as they relate to TNMP, are an integral part of these condensed consolidated financial statements.

23

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

A WHOLLY-OWNED SUBSIDIARY OF PNM RESOURCES, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

	September 30, 2023		December 31, 2022
	(In thousands)
ASSETS
Current Assets:
Cash and cash equivalents	$	1,153	$	—
Accounts receivable	44,196		32,283
Unbilled revenues	20,954		18,191
Other receivables	4,833		8,552
Materials and supplies	15,200		10,843
Regulatory assets	158		1,932
Prepaid and other current assets	3,246		2,346
Total current assets	89,740		74,147
Other Property and Investments:
Other investments	102		101
Non-utility property, net	14,161		14,010
Total other property and investments	14,263		14,111
Utility Plant:
Plant in service and plant held for future use	2,972,515		2,853,130
Less accumulated depreciation and amortization	585,329		578,157
	2,387,186		2,274,973
Construction work in progress	232,235		63,820
Net utility plant	2,619,421		2,338,793
Deferred Charges and Other Assets:
Regulatory assets	78,380		82,745
Goodwill	226,665		226,665
Operating lease right-of-use assets, net of accumulated amortization	2,099		3,426
Other deferred charges	8,789		6,714
Total deferred charges and other assets	315,933		319,550
	$	3,039,357	$	2,746,601

The accompanying notes, as they relate to TNMP, are an integral part of these condensed consolidated financial statements.

24

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

A WHOLLY-OWNED SUBSIDIARY OF PNM RESOURCES, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

	September 30, 2023		December 31, 2022
	(In thousands, except share information)
LIABILITIES AND STOCKHOLDER’S EQUITY
Current Liabilities:
Short-term debt	$	39,800	$	36,700
Current installments of long-term debt	79,921		—
Accounts payable	29,737		34,152
Affiliate payables	5,661		6,273
Accrued interest and taxes	63,231		54,672
Regulatory liabilities	2,062		9,089
Operating lease liabilities	991		1,543
Other current liabilities	9,330		6,336
Total current liabilities	230,733		148,765
Long-term Debt, net of Unamortized Premiums, Discounts, and Debt Issuance Costs	1,180,943		1,076,875
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	173,789		164,637
Regulatory liabilities	212,613		198,213
Asset retirement obligations	880		828
Accrued pension liability and postretirement benefit cost	540		792
Operating lease liabilities	959		1,703
Other deferred credits	62,907		52,964
Total deferred credits and other liabilities	451,688		419,137
Total liabilities	1,863,364		1,644,777
Commitments and Contingencies (Note 11)
Common Stockholder’s Equity:
Common stock ($10 par value; 12,000,000 shares authorized; issued and outstanding 6,358 shares)	64		64
Paid-in-capital	805,166		805,166
Retained earnings	370,763		296,594
Total common stockholder’s equity	1,175,993		1,101,824
	$	3,039,357	$	2,746,601

The accompanying notes, as they relate to TNMP, are an integral part of these condensed consolidated financial statements.

25

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

A WHOLLY-OWNED SUBSIDIARY OF PNM RESOURCES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN COMMON STOCKHOLDER’S EQUITY

(Unaudited)

	Common Stock		Paid-in Capital		Retained Earnings		Total Common Stockholder’s Equity
	(In thousands)
Balance at June 30, 2023	$	64	$	805,166	$	331,259	$	1,136,489
Net earnings	—		—		39,504		39,504
Balance at September 30, 2023	$	64	$	805,166	$	370,763	$	1,175,993
Balance at December 31, 2022	$	64	$	805,166	$	296,594	$	1,101,824
Net earnings	—		—		74,169		74,169
Balance at September 30, 2023	$	64	$	805,166	$	370,763	$	1,175,993

Balance at June 30, 2022	$	64	$	737,166	$	245,438	$	982,668
Net earnings	—		—		31,431		31,431
Equity contribution from parent	—		68,000		—		68,000
Balance at September 30, 2022	$	64	$	805,166	$	276,869	$	1,082,099
Balance at December 31, 2021	$	64	$	737,166	$	204,327	$	941,557
Net earnings	—		—		72,542		72,542
Equity contribution from parent	—		68,000		—		68,000
Balance at September 30, 2022	$	64	$	805,166	$	276,869	$	1,082,099

The accompanying notes, as they relate to TNMP, are an integral part of these condensed consolidated financial statements.

26

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(1)    Significant Accounting Policies and Responsibility for Financial Statements

Financial Statement Preparation

In the opinion of management, the accompanying unaudited interim Condensed Consolidated Financial Statements reflect all normal and recurring accruals and adjustments that are necessary to present fairly the consolidated financial position at September 30, 2023 and December 31, 2022, and the consolidated results of operations and comprehensive income for the three and nine months ended September 30, 2023 and 2022 and cash flows for the nine months ended September 30, 2023 and 2022. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could ultimately differ from those estimated. Weather causes the Company’s results of operations to be seasonal in nature and the results of operations presented in the accompanying Condensed Consolidated Financial Statements are not necessarily representative of operations for an entire year.

The Notes to Condensed Consolidated Financial Statements include disclosures for PNMR, PNM, and TNMP. This report uses the term “Company” when discussing matters of common applicability to PNMR, PNM, and TNMP. Discussions regarding only PNMR, PNM, or TNMP are so indicated. Certain amounts in the 2022 Condensed Consolidated Financial Statements and Notes thereto have been reclassified to conform to the 2023 financial statement presentation.

These Condensed Consolidated Financial Statements are unaudited. Certain information and note disclosures normally included in the annual audited Consolidated Financial Statements have been condensed or omitted, as permitted under the applicable rules and regulations. Readers of these financial statements should refer to PNMR’s, PNM’s, and TNMP’s audited Consolidated Financial Statements and Notes thereto that are included in their respective 2022 Annual Reports on Form 10-K.

GAAP defines subsequent events as events or transactions that occur after the balance sheet date but before financial statements are issued or are available to be issued. Based on their nature, magnitude, and timing, certain subsequent events may be required to be reflected at the balance sheet date and/or required to be disclosed in the financial statements. The Company has evaluated subsequent events accordingly.

Principles of Consolidation

The Condensed Consolidated Financial Statements of each of PNMR, PNM, and TNMP include their accounts and those of subsidiaries in which that entity owns a majority voting interest. PNM also consolidates Valencia. See Note 6. PNM owns undivided interests in several jointly-owned power plants and records its pro-rata share of the assets, liabilities, and expenses for those plants. The agreements for the jointly-owned plants provide that if an owner were to default on its payment obligations, the non-defaulting owners would be responsible for their proportionate share of the obligations of the defaulting owner. In exchange, the non-defaulting owners would be entitled to their proportionate share of the generating capacity of the defaulting owner. There have been no such payment defaults under any of the agreements for the jointly-owned plants.

PNMR Services Company expenses, which represent costs that are primarily driven by corporate level activities, are charged to the business segments. These services are billed at cost and are reflected as general and administrative expenses in the business segments. Other significant intercompany transactions between PNMR, PNM, and TNMP include interest and income tax sharing payments, as well as equity transactions, and interconnection billings. See Note 15. All intercompany transactions and balances have been eliminated.

Dividends on Common Stock

Dividends on PNMR’s common stock are declared by the Board. The timing of the declaration of dividends is dependent on the timing of meetings and other actions of the Board. This has historically resulted in dividends attributable to the second quarter of each year being declared through actions of the Board during the third quarter of the year. The Board declared dividends on common stock considered to be for the second quarter of $0.3675 per share in August 2023 and $0.3475 per share in August 2022, which are reflected as being in the second quarter within Dividends Declared per Common Share on the PNMR Condensed Consolidated Statement of Earnings. The Board declared dividends on common stock for the third quarter of $0.3675 per share in September 2023 and $0.3475 per share in September 2022, which are reflected as being in the third quarter within Dividends Declared per Common Share on the PNMR Condensed Consolidated Statement of Earnings.

27

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

PNMR did not make any cash equity contributions to PNM in the three and nine months ended September 30, 2023 and 2022. PNMR made capital contributions to TNMP of zero in the three and nine months ended September 30, 2023 and $68.0 million in the three and nine months ended September 30, 2022. PNM declared and paid cash dividends on its common stock to PNMR of zero in the three and nine months ended September 2023 and $85.0 million in the three and nine months ended September 30, 2022. TNMP did not declare or pay cash dividends on its common stock to PNMR in the three and nine months ended September 30, 2023 and 2022.

New Accounting Pronouncements

Information concerning a recently issued accounting pronouncement that has not yet been adopted by the Company is presented below. The Company does not expect difficulty in adopting this standard by its required effective date.

Accounting Standards Update 2022-03 - Fair Value Measurement (Topic 820): Fair Value Measurements of Equity Securities Subject to Contractual Sale Restrictions

In June 2022, the FASB issued ASU 2022-03 clarifying that a contractual restriction on the sale of an equity security is not considered part of the unit of account of the security and, therefore, is not considered in measuring fair value. The amendment also clarifies that an entity cannot, as a separate unit of account, recognize and measure a contractual sale restriction. Disclosure requirements from the amendment include disclosure of the fair value of equity securities subject to contractual sale restrictions that are reflected in the balance sheet; the nature and remaining duration of the restriction(s); and the circumstances that could cause a lapse in the restriction(s). ASU 2022-03 is effective for the Company beginning January 1, 2024 with early adoption for both interim and annual periods being permitted. ASU 2022-03 is to be applied prospectively with any adjustments recognized in earnings and disclosed on the date of adoption.

(2)     Segment Information

The following segment presentation is based on the methodology that management uses for making operating decisions and assessing performance of its various business activities. A reconciliation of the segment presentation to the GAAP financial statements is provided.

PNM

PNM includes the retail electric utility operations of PNM that are subject to traditional rate regulation by the NMPRC. PNM provides integrated electricity services that include the generation, transmission, and distribution of electricity for retail electric customers in New Mexico. PNM also includes the generation and sale of electricity into the wholesale market, which includes the asset optimization of PNM’s jurisdictional capacity, as well as providing transmission services to third parties. FERC has jurisdiction over wholesale power and transmission rates.

TNMP

TNMP is an electric utility providing services in Texas under the TECA. TNMP’s operations are subject to traditional rate regulation by the PUCT. TNMP provides transmission and distribution services at regulated rates to various REPs that, in turn, provide retail electric service to consumers within TNMP’s service area. TNMP also provides transmission services at regulated rates to other utilities that interconnect with TNMP’s facilities.

Corporate and Other

The Corporate and Other segment includes PNMR holding company activities, primarily related to corporate level debt and PNMR Services Company. The activities of PNMR Development and the equity method investment in NMRD are also included in Corporate and Other. Eliminations of intercompany transactions are reflected in the Corporate and Other segment.

The following tables present summarized financial information for PNMR by segment. PNM and TNMP each operate in only one segment. Therefore, tabular segment information is not presented for PNM and TNMP.

28

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

PNMR SEGMENT INFORMATION

	PNM		TNMP		Corporate and Other		PNMR Consolidated
	(In thousands)
Three Months Ended September 30, 2023
Electric operating revenues	$	350,334	$	155,517	$	—	$	505,851
Cost of energy	174,362		35,951		—		210,313
Utility margin	175,972		119,566		—		295,538
Other operating expenses	100,739		35,055		(7,100)		128,694
Depreciation and amortization	44,537		28,357		7,298		80,192
Operating income (loss)	30,696		56,154		(198)		86,652
Interest income (expense)	5,323		178		(135)		5,366
Other income (deductions)	(7,598)		2,448		619		(4,531)
Interest charges	(22,354)		(12,095)		(15,389)		(49,838)
Segment earnings (loss) before income taxes	6,067		46,685		(15,103)		37,649
Income taxes (benefit)	(7,199)		7,181		(5,249)		(5,267)
Segment earnings (loss)	13,266		39,504		(9,854)		42,916
Valencia non-controlling interest	(5,058)		—		—		(5,058)
Subsidiary preferred stock dividends	(132)		—		—		(132)
Segment earnings (loss) attributable to PNMR	$	8,076	$	39,504	$	(9,854)	$	37,726
Nine Months Ended September 30, 2023
Electric operating revenues	$	1,118,741	$	408,343	$	—	$	1,527,084
Cost of energy	517,824		106,627		—		624,451
Utility margin	600,917		301,716		—		902,633
Other operating expenses	305,615		101,302		(19,762)		387,155
Depreciation and amortization	132,287		83,746		21,372		237,405
Operating income (loss)	163,015		116,668		(1,610)		278,073
Interest income (expense)	15,542		413		(387)		15,568
Other income	3,130		4,096		1,148		8,374
Interest charges	(61,242)		(33,932)		(41,486)		(136,660)
Segment earnings (loss) before income taxes	120,445		87,245		(42,335)		165,355
Income taxes (benefit)	12,041		13,076		(12,375)		12,742
Segment earnings (loss)	108,404		74,169		(29,960)		152,613
Valencia non-controlling interest	(14,172)		—		—		(14,172)
Subsidiary preferred stock dividends	(396)		—		—		(396)
Segment earnings (loss) attributable to PNMR	$	93,836	$	74,169	$	(29,960)	$	138,045
At September 30, 2023:
Total Assets	$	6,731,852	$	3,039,357	$	279,632	$	10,050,841
Goodwill	$	51,632	$	226,665	$	—	$	278,297

29

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

	PNM		TNMP		Corporate and Other		PNMR Consolidated
	(In thousands)
Three Months Ended September 30, 2022
Electric operating revenues	$	597,337	$	132,551	$	—	$	729,888
Cost of energy	303,351		30,988		—		334,339
Utility margin	293,986		101,563		—		395,549
Other operating expenses	108,710		32,766		(5,260)		136,216
Depreciation and amortization	45,361		24,960		6,249		76,570
Operating income (loss)	139,915		43,837		(989)		182,763
Interest income (expense)	3,888		148		(67)		3,969
Other income (deductions)	(14,443)		2,243		181		(12,019)
Interest charges	(15,467)		(9,851)		(9,208)		(34,526)
Segment earnings (loss) before income taxes	113,893		36,377		(10,083)		140,187
Income taxes (benefit)	12,121		4,946		(3,617)		13,450
Segment earnings (loss)	101,772		31,431		(6,466)		126,737
Valencia non-controlling interest	(4,172)		—		—		(4,172)
Subsidiary preferred stock dividends	(132)		—		—		(132)
Segment earnings (loss) attributable to PNMR	$	97,468	$	31,431	$	(6,466)	$	122,433
Nine Months Ended September 30, 2022
Electric operating revenues	$	1,312,800	$	360,936	$	—	$	1,673,736
Cost of energy	606,129		92,220		—		698,349
Utility margin	706,671		268,716		—		975,387
Other operating expenses	335,173		89,723		(15,835)		409,061
Depreciation and amortization	137,132		72,914		19,057		229,103
Operating income (loss)	234,366		106,079		(3,222)		337,223
Interest income (expense)	10,288		1,435		(135)		11,588
Other income (deductions)	(81,475)		4,303		384		(76,788)
Interest charges	(44,562)		(28,017)		(17,384)		(89,963)
Segment earnings (loss) before income taxes	118,617		83,800		(20,357)		182,060
Income taxes (benefit)	11,762		11,258		(6,038)		16,982
Segment earnings (loss)	106,855		72,542		(14,319)		165,078
Valencia non-controlling interest	(10,897)		—		—		(10,897)
Subsidiary preferred stock dividends	(396)		—		—		(396)
Segment earnings (loss) attributable to PNMR	$	95,562	$	72,542	$	(14,319)	$	153,785
At September 30, 2022:
Total Assets	$	6,113,416	$	2,673,546	$	241,928	$	9,028,890
Goodwill	$	51,632	$	226,665	$	—	$	278,297

Non-GAAP Financial Measures

The Company defines utility margin as electric operating revenues less cost of energy. Cost of energy consists primarily of fuel and purchase power costs for PNM and costs charged by third-party transmission providers for TNMP. The Company believes that utility margin provides a more meaningful basis for evaluating operations than electric operating revenues since substantially all such costs are offset in revenues as fuel and purchase power costs are passed through to customers under PNM’s FPPAC and third-party transmission costs are passed on to consumers through TNMP’s transmission cost recovery factor. Utility margin is not a financial measure required to be presented and is considered a non-GAAP measure. PNM and TNMP do not intend for utility margin to represent any financial measure as defined by GAAP however, the calculation of utility margin, as presented, most closely compares to gross margin as defined by GAAP. Reconciliations between utility margin and gross margin are presented below.

30

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

	PNM		TNMP		Corporate and Other		PNMR Consolidated
	(In thousands)
Three Months Ended September 30, 2023
Gross margin	$	95,721	$	81,457	$	—	$	177,178
Energy production costs	20,388		—		—		20,388
Transmission and distribution costs	15,326		9,752		—		25,078
Depreciation and amortization	44,537		28,357		—		72,894		1
Utility margin	$	175,972	$	119,566	$	—	$	295,538
Nine Months Ended September 30, 2023
Gross margin	$	356,317	$	189,199	$	—	$	545,516
Energy production costs	68,345		—		—		68,345
Transmission and distribution costs	43,968		28,771		—		72,739
Depreciation and amortization	132,287		83,746		—		216,033		1
Utility margin	$	600,917	$	301,716	$	—	$	902,633

	PNM		TNMP		Corporate and Other		PNMR Consolidated
	(In thousands)
Three Months Ended September 30, 2022
Gross margin	$	201,607	$	67,614	$	—	$	269,221
Energy production costs	34,469		—		—		34,469
Transmission and distribution costs	12,549		8,989		—		21,538
Depreciation and amortization	45,361		24,960		—		70,321		1
Utility margin	$	293,986	$	101,563	$	—	$	395,549
Nine Months Ended September 30, 2022
Gross margin	$	421,327	$	172,320	$	—	$	593,647
Energy production costs	110,534		—		—		110,534
Transmission and distribution costs	37,678		23,482		—		61,160
Depreciation and amortization	137,132		72,914		—		210,046		1
Utility margin	$	706,671	$	268,716	$	—	$	975,387

1 Corporate and Other depreciation and amortization represents corporate level activities that are billed at cost and reflected as general and administrative expenses at PNM and TNMP and therefore are not a component of gross margin or utility margin. See Note 1.

31

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(3)   Accumulated Other Comprehensive Income (Loss)

Information regarding accumulated other comprehensive income (loss) for the nine months ended September 30, 2023 and 2022 is as follows:

	Accumulated Other Comprehensive Income (Loss)
	PNM						Corporate and Other		PNMR Consolidated
	Unrealized Gains on Available-for-Sale Debt Securities		Pension Liability Adjustment				Fair Value Adjustment for Cash Flow Hedges
					Total				Total
	(In thousands)
Balance at December 31, 2022	$	7,422	$	(81,757)	$	(74,335)	$	8,287	$	(66,048)
Amounts reclassified from AOCI (pre-tax)	(4,111)		3,582		(529)		5,286		4,757
Income tax impact of amounts reclassified	1,044		(909)		135		(1,343)		(1,208)
Other OCI changes (pre-tax)	2,491		—		2,491		(2,386)		105
Income tax impact of other OCI changes	(632)		—		(632)		606		(26)
Net after-tax change	(1,208)		2,673		1,465		2,163		3,628
Balance at September 30, 2023	$	6,214	$	(79,084)	$	(72,870)	$	10,450	$	(62,420)

Balance at December 31, 2021	$	11,715	$	(83,651)	$	(71,936)	$	—	$	(71,936)
Amounts reclassified from AOCI (pre-tax)	(3,426)		5,328		1,902		(1,767)		135
Income tax impact of amounts reclassified	870		(1,353)		(483)		449		(34)
Other OCI changes (pre-tax)	(8,170)		—		(8,170)		10,391		2,221
Income tax impact of other OCI changes	2,075		—		2,075		(2,640)		(565)
Net after-tax change	(8,651)		3,975		(4,676)		6,433		1,757
Balance at September 30, 2022	$	3,064	$	(79,676)	$	(76,612)	$	6,433	$	(70,179)

The Condensed Consolidated Statements of Earnings include pre-tax amounts reclassified from AOCI related to Unrealized Gains on Available-for-Sale Debt Securities in gains (losses) on investment securities, related to Pension Liability Adjustment in other (deductions), and related to Fair Value Adjustment for Cash Flow Hedges in interest charges. The income tax impacts of all amounts reclassified from AOCI are included in income taxes in the Condensed Consolidated Statements of Earnings.

32

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(4)    Earnings Per Share

Dual presentation of basic and diluted earnings per share is presented in the Condensed Consolidated Statements of Earnings of PNMR. Diluted earnings per share was computed using the treasury stock method for both restricted stock and the 2023 forward sales agreements. Information regarding the computation of earnings per share is as follows:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2023		2022		2023		2022
	(In thousands, except per share amounts)
Net Earnings Attributable to PNMR	$	37,726	$	122,433	$	138,045	$	153,785
Average Number of Common Shares:
Outstanding during period	85,835		85,835		85,835		85,835
Vested awards of restricted stock	254		266		257		291
Average Shares – Basic	86,089		86,101		86,092		86,126
Dilutive Effect of Common Stock Equivalents:
Restricted stock	32		35		36		52
2023 Forward Sale Agreements	8		—		23		—
Average Shares – Diluted	86,129		86,136		86,151		86,178
Net Earnings Per Share of Common Stock:
Basic	$	0.44	$	1.42	$	1.60	$	1.79
Diluted	$	0.44	$	1.42	$	1.60	$	1.78

(5)   Electric Operating Revenues

PNMR is an investor-owned holding company with two regulated utilities providing electricity and electric services in New Mexico and Texas. PNMR’s electric utilities are PNM and TNMP. Additional information concerning electric operating revenue is contained in Note 4 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

Accounts Receivable and Allowance for Credit Losses

Accounts receivable consists primarily of trade receivables from customers. In the normal course of business, credit is extended to customers on a short-term basis. The Company estimates the allowance for credit losses on trade receivables based on historical experience and estimated default rates. Accounts receivable balances are reviewed monthly, adjustments to the allowance for credit losses are made as necessary and amounts that are deemed uncollectible are written off. In addition to the allowance for credit losses on trade receivables, the Company has evaluated other receivables for potential credit related losses. These balances include potential exposures for other non-retail utility services. In the three and nine months ended September 30, 2023 and 2022, there were no estimated credit losses related to these transactions.

33

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Disaggregation of Revenues

A disaggregation of revenues from contracts with customers by the type of customer is presented in the table below.

	PNM		TNMP		PNMR Consolidated
Three Months Ended September 30, 2023	(In thousands)
Electric Operating Revenues:
Contracts with customers:
Retail electric revenue
Residential	$	111,406	$	69,556	$	180,962
Commercial	106,237		41,662		147,899
Industrial	19,891		10,665		30,556
Public authority	6,099		1,708		7,807
Economy energy service	4,958		—		4,958
Transmission	37,466		34,980		72,446
Wholesale energy service	62,804		—		62,804
Miscellaneous	1,507		984		2,491
Total revenues from contracts with customers	350,368		159,555		509,923
Alternative revenue programs	(939)		(4,038)		(4,977)
Other electric operating revenues	905		—		905
Total Electric Operating Revenues	$	350,334	$	155,517	$	505,851
Nine Months Ended September 30, 2023
Electric Operating Revenues:
Contracts with customers:
Retail electric revenue
Residential	$	339,307	$	147,413	$	486,720
Commercial	309,560		114,357		423,917
Industrial	65,524		36,359		101,883
Public authority	15,822		4,996		20,818
Economy energy service	24,999		—		24,999
Transmission	124,396		100,100		224,496
Wholesale energy sales	213,098		—		213,098
Miscellaneous	4,293		2,832		7,125
Total revenues from contracts with customers	1,096,999		406,057		1,503,056
Alternative revenue programs	9,963		2,286		12,249
Other electric operating revenues	11,779		—		11,779
Total Electric Operating Revenues	$	1,118,741	$	408,343	$	1,527,084

34

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

	PNM		TNMP		PNMR Consolidated
Three Months Ended September 30, 2022	(In thousands)
Electric Operating Revenues:
Contracts with customers:
Retail electric revenue
Residential	$	150,683	$	60,878	$	211,561
Commercial	136,314		41,705		178,019
Industrial	25,609		9,450		35,059
Public authority	6,893		1,720		8,613
Economy energy service	11,784		—		11,784
Transmission	44,513		28,881		73,394
Wholesale energy sales	220,219		—		220,219
Miscellaneous	1,368		961		2,329
Total revenues from contracts with customers	597,383		143,595		740,978
Alternative revenue programs	(599)		(11,044)		(11,643)
Other electric operating revenues	553		—		553
Total Electric Operating Revenues	$	597,337	$	132,551	$	729,888
Nine Months Ended September 30, 2022
Electric Operating Revenues:
Contracts with customers:
Retail electric revenue
Residential	$	368,159	$	146,367	$	514,526
Commercial	325,492		111,365		436,857
Industrial	68,351		27,388		95,739
Public authority	16,063		4,806		20,869
Economy energy service	31,726		—		31,726
Transmission	114,699		83,731		198,430
Wholesale energy sales	365,554		—		365,554
Miscellaneous	4,043		2,887		6,930
Total revenues from contracts with customers	1,294,087		376,544		1,670,631
Alternative revenue programs	1,039		(15,608)		(14,569)
Other electric operating revenues	17,674		—		17,674
Total Electric Operating Revenues	$	1,312,800	$	360,936	$	1,673,736

Decreases in revenue in 2023 compared to 2022, reflect refunds under the SJGS abandonment settlement agreement (Note 12) and lower wholesale energy market sales through PNM’s participation in the EIM, which are passed on to customers under PNM’s FFPAC with no impact to net earnings.

Contract Balances

Performance obligations related to contracts with customers are typically satisfied when the energy is delivered and the customer or end-user utilizes the energy. Accounts receivable from customers represent amounts billed, including amounts under ARPs. For PNM, accounts receivable reflected on the Condensed Consolidated Balance Sheets, net of allowance for credit losses, includes $131.0 million at September 30, 2023 and $151.4 million at December 31, 2022 resulting from contracts with customers. All of TNMP’s accounts receivable results from contracts with customers.

Contract assets are an entity’s right to consideration in exchange for goods or services that the entity has transferred to a customer when that right is conditioned on something other than the passage of time (for example, the entity’s future performance). Upon the completion of the Western Spirit Line, PNM entered into a Transmission Service Agreement (“TSA”) with Pattern Wind under an incremental tariff rate approved by FERC. The terms of the agreement provide for a financing component that benefits the customer. As such, the revenue that PNM recognizes will be in excess of the consideration

35

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

received at the beginning of the service term resulting in a contract asset. The balance of the contract asset is $19.5 million at September 30, 2023 and $11.9 million at December 31, 2022. This contract asset is presented in Other deferred charges on the Condensed Consolidated Balance Sheets.

Contract liabilities arise when consideration is received in advance from a customer before satisfying the performance obligations. Therefore, revenue is deferred and not recognized until the obligation is satisfied. Under its Open Access Transmission Tariff (“OATT”), PNM accepts upfront consideration for capacity reservations requested by transmission customers, which requires PNM to defer the customer’s transmission capacity rights for a specific period of time. PNM recognizes the revenue of these capacity reservations over the period it defers the customer’s capacity rights. Other utilities pay PNM and TNMP in advance for the joint-use of their utility poles. These revenues are recognized over the period of time specified in the joint-use contract, typically for one calendar year. Deferred revenues on these arrangements are recorded as contract liabilities. PNMR’s, PNM’s, and TNMP’s contract liabilities and related revenues are not material for any of the periods presented. The Company has no other arrangements with remaining performance obligations to which a portion of the transaction price would be required to be allocated.

(6)     Variable Interest Entities

How an enterprise evaluates and accounts for its involvement with variable interest entities, focuses primarily on whether the enterprise has the power to direct the activities that most significantly impact the economic performance of a variable interest entity (“VIE”). This evaluation requires continual reassessment of the primary beneficiary of a VIE. Additional information concerning PNM’s VIEs is contained in Note 10 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

Valencia

PNM has a PPA to purchase all of the electric capacity and energy from Valencia, a 155 MW natural gas-fired power plant near Belen, New Mexico, through May 2028. A third party built, owns, and operates the facility while PNM is the sole purchaser of the electricity generated. PNM is obligated to pay fixed operation and maintenance and capacity charges in addition to variable operation and maintenance charges under this PPA. For the three and nine months ended September 30, 2023, PNM paid $5.1 million and $15.2 million for fixed charges and $1.4 million and $4.1 million for variable charges. For the three and nine months ended September 30, 2022, PNM paid $5.0 million and $14.6 million for fixed charges and $0.7 million and $1.1 million for variable charges. PNM does not have any other financial obligations related to Valencia. The assets of Valencia can only be used to satisfy its obligations and creditors of Valencia do not have any recourse against PNM’s assets. During the term of the PPA, PNM has the option, under certain conditions, to purchase and own up to 50% of the plant or the VIE. The PPA specifies that the purchase price would be the greater of 50% of book value reduced by related indebtedness or 50% of fair market value.

PNM sources fuel for the plant, controls when the facility operates through its dispatch, and receives the entire output of the plant, which factors directly and significantly impact the economic performance of Valencia. Therefore, PNM has concluded that the third-party entity that owns Valencia is a VIE and that PNM is the primary beneficiary of the entity since PNM has the power to direct the activities that most significantly impact the economic performance of Valencia and will absorb the majority of the variability in the cash flows of the plant. As the primary beneficiary, PNM consolidates Valencia in its financial statements. Accordingly, the assets, liabilities, operating expenses, and cash flows of Valencia are included in the Condensed Consolidated Financial Statements of PNM although PNM has no legal ownership interest or voting control of the VIE. The assets and liabilities of Valencia are set forth below and are not shown separately on the Condensed Consolidated Balance Sheets. The owner’s equity and net income of Valencia are considered attributable to non-controlling interest.

36

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Summarized financial information for Valencia is as follows:

	Results of Operations
	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(In thousands)
Operating revenues	$	6,679	$	5,640	$	19,427	$	15,670
Operating expenses	1,621		1,468		5,255		4,773
Earnings attributable to non-controlling interest	$	5,058	$	4,172	$	14,172	$	10,897

	Financial Position
	September 30,		December 31,
	2023		2022
	(In thousands)
Current assets	$	4,162	$	3,429
Net property, plant, and equipment	47,963		50,094
Total assets	52,125		53,523
Current liabilities	952		529
Owners’ equity – non-controlling interest	$	51,173	$	52,994

Westmoreland San Juan Mining, LLC

As discussed in the subheading Coal Supply in Note 11, PNM purchased coal for SJGS under the SJGS CSA. PNM and Westmoreland also entered into agreements under which CCR disposal and mine reclamation services for SJGS would be provided. In 2019, Westmoreland emerged from Chapter 11 bankruptcy as a privately held company owned and operated by a group of its former creditors. Under the reorganization, the assets of SJCC were sold to Westmoreland San Juan Mining, LLC (“WSJ LLC”), a subsidiary of Westmoreland Mining Holdings, LLC. As successor entity to SJCC, WSJ LLC assumed all rights and obligations of SJCC including obligations to PNM under the SJGS CSA and to PNMR under letter of credit support agreements. In conjunction with the retirement of SJGS, the SJGS CSA expired under its terms on September 30, 2022.

PNMR issued $30.3 million in letters of credit to facilitate the issuance of reclamation bonds required in order for SJCC to mine coal to be supplied to SJGS. As discussed above, WSJ LLC assumed the rights and obligations of SJCC, including obligations to PNMR for the letters of credit. The letters of credit support results in PNMR having a variable interest in WSJ LLC since PNMR is subject to possible loss in the event performance by PNMR is required under the letters of credit support. PNMR considers the possibility of loss under the letters of credit support to be remote since the purpose of posting the bonds is to provide assurance that WSJ LLC performs the required reclamation of the mine site in accordance with applicable regulations and the reclamation services agreement provides WSJ LLC the ability to recover the cost of reclamation. Additionally, much of the mine reclamation activities have been and will continue to be performed after the SJGS CSA expired on September 30, 2022. As discussed in Note 11, each of the SJGS participants has established and actively fund trusts to meet future reclamation obligations.

WSJ LLC is considered a VIE.  PNMR’s analysis of its arrangements with WSJ LLC concluded that WSJ LLC had the ability to direct its mining operations and reclamation services, which are the factors that most significantly impact the economic performance of WSJ LLC.  Other than PNM being able to ensure that coal was supplied in adequate quantities and of sufficient quality to provide the fuel necessary to operate SJGS in a normal manner and monitoring of reclamation activities, the mining operations and reclamation services were solely under the control of WSJ LLC, including developing mining and reclamation plans, hiring of personnel, and incurring operating and maintenance expenses. Neither PNMR nor PNM had any ability to direct or influence the mining operation or reclamation activities.  PNM’s involvement through the SJGS CSA and the reclamation services agreement is a protective right rather than a participating right and WSJ LLC still has the power to direct the activities that most significantly impact the economic performance of WSJ LLC.  The SJGS CSA required WSJ LLC to deliver coal to fuel SJGS in exchange for payment of a set price per ton, which escalated over time for inflation.  The reclamation services agreement requires WSJ LLC to perform reclamation services at a base price per activity, which escalates over time for inflation. If WSJ LLC had been able to mine or performs reclamation services more efficiently than anticipated,

37

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

its economic performance would improve.  Conversely, if WSJ LLC had not been able to mine or does not perform reclamation services as efficiently as anticipated, its economic performance would be negatively impacted.  Accordingly, PNMR believes WSJ LLC is the primary beneficiary and, therefore, WSJ LLC is not consolidated by either PNMR or PNM. The amounts outstanding under the letters of credit support continue to be PNMR’s maximum exposure to loss from the VIE at September 30, 2023.

(7)    Fair Value of Derivative and Other Financial Instruments

Additional information concerning energy related derivative contracts and other financial instruments is contained in Note 9 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

Fair value is defined as the price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Fair value is based on current market quotes as available and is supplemented by modeling techniques and assumptions made by the Company to the extent quoted market prices or volatilities are not available. External pricing input availability varies based on commodity location, market liquidity, and term of the agreement. Valuations of derivative assets and liabilities take into account nonperformance risk, including the effect of counterparties’ and the Company’s credit risk. The Company regularly assesses the validity and availability of pricing data for its derivative transactions. Although the Company uses its best judgment in estimating the fair value of these instruments, there are inherent limitations in any estimation technique.

Energy Related Derivative Contracts

Overview

The primary objective for the use of commodity derivative instruments, including energy contracts, options, swaps, and futures, is to manage price risk associated with forecasted purchases of energy and fuel used to generate electricity, as well as managing anticipated generation capacity in excess of forecasted demand from existing customers. PNM’s energy related derivative contracts manage commodity risk. PNM is required to meet the demand and energy needs of its customers. PNM may be exposed to market risk for the needs of its customers not covered under the FPPAC.

PNM entered into several agreements to purchase power from third parties in order to ensure that customer demand during the 2023 summer peak load was met. Agreements for purchases totaling 85 MW from June 1, 2023 through September 30, 2023 were not considered derivatives because there was either no notional amount due to their unit-contingent nature or qualified for a normal purchase, normal sale scope exception. Agreements totaling 375 MW were accounted for as derivative agreements and are considered economic hedges.

In 2021, PNM entered into three agreements to purchase power from third parties at a fixed price in order to ensure that customer demand during the 2022 summer peak load period was met. Two of the agreements, the purchase of 85 MW from June through September 2022 and the purchase of 40 MW for the full year of 2022, were not considered derivatives because there were no notional amounts due to the unit-contingent nature of the agreements. The third agreement for the purchase of 150 MW firm power in June and September 2022 were accounted for as derivative agreements and are considered economic hedges.

PNM was exposed to market risk for its 65 MW interest in SJGS Unit 4, which was held as merchant plant as ordered by the NMPRC from January 1, 2018 until September 30, 2022. PNM entered into agreements to sell power from 36 MW of that capacity to a third party at a fixed price for the period January 1, 2018 through June 30, 2022, subject to certain conditions. Under these agreements, PNM was obligated to deliver 36 MW of power only when SJGS Unit 4 was operating.  In May 2022, PNM executed a new agreement to sell 50 MW of that capacity to a third party for the period from July 1, 2022 through September 30, 2022 on a system-contingent basis. These agreements were not considered derivatives because there was no notional amount due to the unit-contingent nature of the transactions.

PNM and Tri-State had a hazard sharing agreement that expired in May 2022. Under this agreement, each party sold the other party 100 MW of capacity and energy from a designated generation resource on a unit contingent basis, subject to certain performance guarantees. The agreement was accounted for as a commodity derivative. In May 2022, PNM and Tri-State entered into another hazard sharing agreement that existed on a unit contingent basis through September 30, 2022, however this agreement did not include a performance guarantee. As a result, this agreement was not considered a derivative. Both the purchases and sales were made at the same market index price.  This agreement served to reduce the magnitude of

38

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

each party’s single largest generating hazard and assist in enhancing the reliability and efficiency of their respective operations. PNM passed the sales and purchases through to customers under PNM’s FPPAC.

PNM’s operations are managed primarily through a net asset-backed strategy, whereby PNM’s aggregate net open forward contract position is covered by its forecasted excess generation capabilities or market purchases. PNM could be exposed to market risk if its generation capabilities were to be disrupted or if its load requirements were to be greater than anticipated. If all or a portion of load requirements were required to be covered as a result of such unexpected situations, commitments would have to be met through market purchases. TNMP does not enter into energy related derivative contracts.

Commodity Risk

Marketing and procurement of energy often involve market risks associated with managing energy commodities and establishing positions in the energy markets, primarily on a short-term basis. PNM routinely enters into various derivative instruments such as forward contracts, option agreements, and price basis swap agreements to economically hedge price and volume risk on power commitments and fuel requirements and to minimize the effect of market fluctuations. PNM monitors the market risk of its commodity contracts in accordance with approved risk and credit policies.

Accounting for Derivatives

Under derivative accounting and related rules for energy contracts, PNM accounts for its various instruments for the purchase and sale of energy, which meet the definition of a derivative, based on PNM’s intent. During the nine months ended September 30, 2023 and the year ended December 31, 2022, PNM was not hedging its exposure to the variability in future cash flows from commodity derivatives through designated cash flow hedges. The derivative contracts recorded at fair value that do not qualify or are not designated for cash flow hedge accounting are classified as economic hedges. Economic hedges are defined as derivative instruments, including long-term power agreements, used to economically hedge generation assets, purchased power and fuel costs, and customer load requirements. Changes in the fair value of economic hedges are reflected in results of operations on the Condensed Consolidated Statements of Earnings and are classified between Electric operating revenues and Cost of energy according to the intent of the hedge. PNM also uses such instruments under an NMPRC approved hedging plan to manage fuel and purchased power costs related to customers covered by its FPPAC. Changes in the fair value of instruments covered by its FPPAC are recorded as Regulatory assets and Regulatory liabilities on the Condensed Consolidated Balance Sheets. The cash impacts of settled derivatives are recorded as operating activities or financing activities on the Condensed Consolidated Statement of Cash Flows consistent with the classification of the hedged transaction. PNM has no trading transactions.

Commodity Derivatives

PNM’s commodity derivative instruments that are recorded at fair value, all of which are accounted for as economic hedges and considered Level 2 fair value measurements, are presented in the following line items on the Condensed Consolidated Balance Sheets:

	Economic Hedges
	September 30, 2023		December 31, 2022
	(In thousands)
Other current assets	$	603	$	9,780
Other current liabilities	(3,514)		(19,209)
Net	$	(2,911)	$	(9,429)

Certain of PNM’s commodity derivative instruments in the above table are subject to master netting agreements whereby assets and liabilities could be offset in the settlement process. PNM does not offset fair value and cash collateral for derivative instruments under master netting arrangements and the above table reflects the gross amounts of fair value assets and liabilities for commodity derivatives.

As discussed above, PNM has NMPRC-approved guidelines for hedging arrangements to manage fuel and purchased power costs related to customers covered by its FPPAC. The table above includes $0.6 million of current assets and $3.5 million of current liabilities related to these arrangements at September 30, 2023 and $9.8 million of current assets and $19.2 million of current liabilities at December 31, 2022 with changes in fair value recorded as regulatory assets and regulatory liabilities.

39

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

At September 30, 2023 and December 31, 2022, PNM had no amounts recognized for the legal right to reclaim cash collateral. However, amounts posted as cash collateral under margin arrangements were $1.0 million at September 30, 2023 and $10.5 million at December 31, 2022. These amounts are included in other current assets on the Condensed Consolidated Balance Sheets. At September 30, 2023 and December 31, 2022, obligations to return cash collateral were $0.2 million, which is included in other current liabilities on the Condensed Consolidated Balance Sheets.

The changes in the fair value of commodity derivative instruments that are considered economic hedges had no impact on PNM’s net earnings during the nine months ended September 30, 2023 and 2022. Commodity derivatives had no impact on OCI for any of the periods presented. Commodity contract volume positions are presented in MMBTU for gas related contracts and in MWh for power related contracts. The table below presents PNM’s net buy (sell) volume positions:

	Economic Hedges
	MMBTU	MWh
September 30, 2023	—	290,295
December 31, 2022	—	432,200

In connection with managing its commodity risks, PNM enters into master agreements with certain counterparties. If PNM is in a net liability position under an agreement, some agreements provide that the counterparties can request collateral if PNM’s credit rating is downgraded; other agreements provide that the counterparty may request collateral to provide it with “adequate assurance” that PNM will perform; and others have no provision for collateral.

The table below presents information about PNM’s contingent requirement to provide collateral under certain commodity contracts having an objectively determinable collateral provision, that are in net liability positions, and that are not fully collateralized with cash. Contractual liability represents those commodity derivative contracts recorded at fair value on the balance sheet, determined on an individual contract basis without offsetting amounts for individual contracts that are in an asset position and could be offset under master netting agreements with the same counterparty. Cash collateral posted under these contracts does not reflect letters of credit under the Company’s revolving credit facilities that may have been issued as collateral. Net exposure is the net contractual liability for all contracts, including those designated as normal purchase and normal sale, offset by existing collateral and by any offsets available under master netting agreements, including both assets and liability positions.

Contingent Feature - Credit Rating Downgrade	Contractual Liability		Existing Cash Collateral		Net Exposure
	(In thousands)
September 30, 2023	$	3,514	$	—	$	3,514
December 31, 2022	$	15,288	$	—	$	13,087

Non-Derivative Financial Instruments

The carrying amounts reflected on the Condensed Consolidated Balance Sheets approximate fair value for cash, receivables, and payables due to the short period of maturity. Investment securities are carried at fair value. Investment securities consist of PNM assets held in the NDT for its share of decommissioning costs of PVNGS, a trust for PNM’s share of decommissioning costs at SJGS, and trusts for PNM’s share of final reclamation costs related to the coal mines serving SJGS and Four Corners. See Note 11. At September 30, 2023 and December 31, 2022, the fair value of investment securities included $334.0 million and $325.3 million for the NDT, $15.3 million and $14.7 million for the SJGS decommissioning trust, and $72.1 million and $77.5 million for the coal mine reclamation trusts.

PNM records a realized loss as an impairment for any available-for-sale debt security that has a fair value that is less than its carrying value. At September 30, 2023 and December 31, 2022, PNM had no available-for-sale debt securities for which carrying value exceeds fair value and there are no impairments considered to be “other than temporary” that are included in AOCI and not recognized in earnings. All gains and losses resulting from sales and changes in the fair value of equity securities are recognized immediately in earnings.

40

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Gains and losses recognized on the Condensed Consolidated Statements of Earnings related to investment securities in the NDT, SJGS decommissioning, and coal mine reclamation trusts are presented in the following table:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2023		2022		2023		2022
	(In thousands)
Equity securities:
Net gains (losses) from equity securities sold	$	(189)	$	(2,210)	$	1,758	$	1,735
Net gains (losses) from equity securities still held	(4,946)		(4,061)		3,673		(52,320)
Total net gains (losses) on equity securities	(5,135)		(6,271)		5,431		(50,585)
Available-for-sale debt securities:
Net (losses) on debt securities	(3,269)		(9,465)		(3,616)		(33,519)
Net gains (losses) on investment securities	$	(8,404)	$	(15,736)	$	1,815	$	(84,104)

The proceeds and gross realized gains and losses on the disposition of securities held in the NDT, SJGS decommissioning trust, and coal mine reclamation trusts are shown in the following table. Realized gains and losses are determined by specific identification of costs of securities sold. Gross realized losses shown below exclude the (increase)/decrease in realized impairment losses of $(0.6) million and $2.8 million for the three and nine months ended September 30, 2023 and $(7.1) million and $(28.7) million for the three and nine months ended September 30, 2022.

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2023		2022		2023		2022
	(In thousands)
Proceeds from sales	$	137,797	$	92,371	$	412,574	$	323,251
Gross realized gains	4,022		2,366		14,464		20,089
Gross realized (losses)	(6,876)		(6,908)		(19,088)		(23,109)

At September 30, 2023, the available-for-sale debt securities held by PNM, had the following final maturities:

	Fair Value
	(In thousands)
Within 1 year	$	34,601
After 1 year through 5 years	67,254
After 5 years through 10 years	67,273
After 10 years through 15 years	18,916
After 15 years through 20 years	13,634
After 20 years	43,825
	$	245,503

Fair Value Disclosures

The Company determines the fair values of its derivative and other financial instruments based on the hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. There are three levels of inputs that may be used to measure fair value. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. Level 2 inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. Level 3 inputs are unobservable inputs for the asset or liability.

For investment securities, Level 2 and Level 3 fair values are provided by fund managers utilizing a pricing service. For Level 2 fair values, the pricing provider predominantly uses the market approach using bid side market values based upon a hierarchy of information for specific securities or securities with similar characteristics. Fair values of Level 2 investments in

41

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

mutual funds are equal to net asset value. For commodity derivatives, Level 2 fair values are determined based on market observable inputs, which are validated using multiple broker quotes, including forward price, volatility, and interest rate curves to establish expectations of future prices. Credit valuation adjustments are made for estimated credit losses based on the overall exposure to each counterparty. For the Company’s long-term debt, Level 2 fair values are provided by an external pricing service. The pricing service primarily utilizes quoted prices for similar debt in active markets when determining fair value. The valuation of Level 3 investments, when applicable, requires significant judgment by the pricing provider due to the absence of quoted market values, changes in market conditions, and the long-term nature of the assets. The Company has no Level 3 investments as of September 30, 2023 and December 31, 2022. Management of the Company independently verifies the information provided by pricing services. Items recorded at fair value by PNM on the Condensed Consolidated Balance Sheets are presented below by level of the fair value hierarchy along with gross unrealized gains on investments in available-for-sale debt securities:

			GAAP Fair Value Hierarchy
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Unrealized Gains
	(In thousands)
September 30, 2023
Cash and cash equivalents	$	37,930	$	37,930	$	—
Equity securities:
Corporate stocks, common	71,359		71,359		—
Corporate stocks, preferred	4,523		509		4,014
Mutual funds and other	62,062		62,062		—
Available-for-sale debt securities:
U.S. government	40,256		37,987		2,269		$	1,637
International government	10,498		—		10,498		738
Municipals	48,364		—		48,364		139
Corporate and other	146,385				146,385		5,853
	$	421,377	$	209,847	$	211,530	$	8,367
December 31, 2022
Cash and cash equivalents	$	66,843	$	66,843	$	—
Equity securities:
Corporate stocks, common	40,103		40,103		—
Corporate stocks, preferred	5,191		790		4,401
Mutual funds and other	66,359		66,359		—
Available-for-sale debt securities:
U.S. government	45,905		45,645		260		$	1,334
International government	9,762		—		9,762		1,117
Municipals	43,136		—		43,136		1,062
Corporate and other	140,177		—		140,177		6,473
	$	417,476	$	219,740	$	197,736	$	9,986

42

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The carrying amounts and fair values of long-term debt, all of which are considered Level 2 fair value measurements and are not recorded at fair value on the Condensed Consolidated Balance Sheets, are presented below:

	Carrying Amount		Fair Value
September 30, 2023	(In thousands)
PNMR	$	4,405,121	$	3,933,137
PNM	2,145,200		1,868,133
TNMP	1,260,864		1,065,003
December 31, 2022
PNMR	$	4,077,387	$	3,726,195
PNM	2,000,900		1,789,186
TNMP	1,076,875		937,009

The carrying amount and fair value of the Company’s other investments presented on the Condensed Consolidated Balance Sheets are not material and not shown in the above table.

(8)    Stock-Based Compensation

PNMR has various stock-based compensation programs, which provide restricted stock awards under the Performance Equity Plan (“PEP”). Although certain PNM and TNMP employees participate in the PNMR plans, PNM and TNMP do not have separate employee stock-based compensation plans. Certain restricted stock awards are subject to achieving performance or market targets. Other awards of restricted stock are only subject to time vesting requirements. Restricted stock expected to be awarded under the PEP for performance periods ending after 2023 no longer have market targets. Additional information concerning stock-based compensation under the PEP is contained in Note 12 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

Restricted stock under the PEP refers to awards of stock subject to vesting, performance, or market conditions rather than to shares with contractual post-vesting restrictions. Generally, the awards vest ratably over three years from the grant date of the award. However, awards with performance or market conditions vest upon satisfaction of those conditions. In addition, plan provisions provide that upon retirement, participants become 100% vested in certain stock awards. The vesting period for awards of restricted stock to non-employee members of the Board is one-year.

The stock-based compensation expense related to restricted stock awards without performance or market conditions to participants that are retirement eligible on the grant date is recognized immediately at the grant date and is not amortized. Compensation expense for other such awards is amortized over the shorter of the requisite vesting period or the period until the participant becomes retirement eligible. Compensation expense for performance-based shares is recognized ratably over the performance period as required service is provided and is adjusted periodically to reflect the level of achievement expected to be attained. Compensation expense related to market-based shares is recognized ratably over the measurement period, regardless of the actual level of achievement, provided the employees meet their service requirements. At September 30, 2023, PNMR had unrecognized expense related to stock awards of $5.5 million, which is expected to be recognized over an average of 2.2 years.

The grant date fair value for restricted stock and stock awards with internal PNMR performance targets is determined based on the market price of PNMR common stock on the date of the agreements reduced by the present value of future dividends that will not be received prior to vesting. The grant date fair value is applied to the total number of shares that are anticipated to vest, although the number of performance shares that ultimately vest cannot be determined until after the performance periods end. The grant date fair value of stock awards with market targets were determined using Monte Carlo simulation models, which provide grant date fair values that include an expectation of the number of shares to vest at the end of the measurement period.

43

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The following table summarizes the weighted-average assumptions used to determine the awards grant date fair value:

	Nine Months Ended September 30,
Restricted Shares and Performance Based Shares	2023			2022
Expected quarterly dividends per share	$	0.3675		$	0.3475
Risk-free interest rate	4.46		%	1.46		%

The following table summarizes activity in restricted stock awards, including performance-based and market-based shares for the nine months ended September 30, 2023:

	Restricted Stock
	Shares	Weighted- Average Grant Date Fair Value
Outstanding at December 31, 2022	182,446	$	42.09
Granted	194,453	45.00
Released	(197,424)	43.99
Forfeited	(1,222)	42.57
Outstanding at September 30, 2023	178,253	$	43.31

PNMR’s current stock-based compensation program provides for performance targets through 2025 and market targets through 2023. Included, as granted and released, in the table above are 100,991 previously awarded shares that were earned for the 2020 - 2022 performance measurement period and ratified by the Board in February 2023 (based upon achieving targets at above “target”, below “maximum” levels). Excluded from the table above are 143,837, 149,898, and 141,885 shares for the three-year performance periods ending in 2023, 2024 and 2025 that will be awarded if all performance and market criteria are achieved at maximum levels and all executives remain eligible.

The following table provides additional information concerning restricted stock activity, including performance-based and market-based shares:

	Nine Months Ended September 30,
Restricted Stock	2023		2022
Weighted-average grant date fair value	$	45.00	$	41.04
Total fair value of restricted shares that vested (in thousands)	$	9,635	$	7,804

(9)   Financing

The Company’s financing strategy includes both short-term and long-term borrowings. The Company utilizes short-term revolving credit facilities, as well as cash flows from operations, to provide funds for both construction and operating expenditures. Depending on market and other conditions, the Company will periodically sell long-term debt or enter into term loan arrangements and use the proceeds to reduce borrowings under the revolving credit facilities or refinance other debt. Each of the Company’s revolving credit facilities, term loans, and other debt agreements contains a single financial covenant that requires the maintenance of a debt-to-capitalization ratio. For the PNMR agreements, this ratio must be maintained at less than or equal to 70%, and for the PNM and TNMP agreements, this ratio must be maintained at less than or equal to 65%. The Company’s revolving credit facilities, term loans, and other debt agreements generally also contain customary covenants, events of default, cross-default provisions, and change-of-control provisions. PNM must obtain NMPRC approval for any financing transaction having a maturity of more than 18 months. In addition, PNM files its annual informational financing filing and short-term financing plan with the NMPRC. Additional information concerning financing activities is contained in Note 7 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

On August 25, 2023, PNM formed PNM Energy Transition Bond Company I, LLC (“ETBC I”), a wholly owned special purpose subsidiary for the limited purpose of purchasing, owning, and administering energy transition property, issuing Securitized Bonds, and performing related activities. PNM expects ETBC I to issue $343.2 million principal amount of

44

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Securitized Bonds in the fourth quarter of 2023. See Note 12 for additional information regarding the SJGS Abandonment Application.

On May 16, 2023, PNM filed a shelf registration statement that provides for the issuance of up to $650.0 million of SUNs that expires in May 2026.

On March 2, 2022, PNMR filed a shelf registration that provides for the issuance of various types of debt and equity securities. The PNMR shelf registration statement expires in March 2025.

Financing Activities

On June 30, 2023, PNMR entered into a $500.0 million term loan agreement (the “PNMR 2023 Term Loan”) among PNMR, the lenders party thereto, and Wells Fargo Bank, N.A., as administrative agent. The PNMR 2023 Term Loan matures on June 30, 2026 and bears interest at a variable rate, which was 6.77% at September 30, 2023. The proceeds were used to prepay an equal amount of the PNMR 2021 Delayed Draw Term Loan, without penalty.

At December 31, 2022, PNM had $130.0 million of 1.10% PCRBs outstanding with a mandatory remarketing date of June 1, 2023, issued by the City of Farmington, New Mexico with a final maturity of June 2040. On June 1, 2023, PNM remarketed the $130.0 million to new investors at 3.90% with a mandatory tender date of June 1, 2028.

At December 31, 2022, PNM had $55.0 million aggregate principal amount of its 3.15% SUNs outstanding due May 2023. On May 15, 2023, PNM repaid the $55.0 million 3.15% SUNs.

On April 28, 2023, PNM entered into an agreement (the “PNM 2023 Note Purchase Agreement”) with institutional investors for the sale and issuance of $200.0 million aggregate principal amount of two series of SUNs (the “PNM 2023 SUNs”) offered in private placement transactions. The PNM 2023 SUNs were issued on April 28, 2023. PNM issued $150.0 million of the PNM 2023 SUNs at 5.51%, due April 28, 2035, and another $50.0 million at 5.92%, due April 28, 2053. Proceeds from the PNM 2023 SUNs were used to repay borrowings under the PNM Revolving Credit Facility and the PNM New Mexico Credit Facility, for funding of capital expenditures, and for general corporate purposes. The PNM 2023 Note Purchase Agreement includes the customary covenants discussed above. In the event of a change of control, PNM will be required to offer to prepay the PNM 2023 SUNs at par. Although there are customary change of control provisions in the PNM debt agreements, the change of control provisions in these agreements, including the PNM 2023 Note Purchase Agreement, are not triggered by the closing of the Merger. PNM has the right to redeem any or all of the PNM 2023 SUNs prior to their maturities, subject to payment of a customary make-whole premium.

On April 28, 2023, TNMP entered into an agreement (the “TNMP 2023 Bond Purchase Agreement”) with institutional investors for the sale of $185.0 million aggregate principal amount of two series of TNMP first mortgage bonds (the “TNMP 2023 Bonds”) offered in private placement transactions. TNMP issued the first series of $130.0 million on April 28, 2023, at a 5.01% interest rate, due April 28, 2033. The second series of $55.0 million was issued on July 28, 2023, at a 5.47% interest rate, due July 28, 2053. The proceeds were used to repay borrowings under the TNMP Revolving Credit Facility, for funding of capital expenditures, and for other corporate purposes. The TNMP 2023 Bonds are subject to continuing compliance with the representations, warranties and covenants set forth in the supplemental indentures governing the TNMP 2023 Bonds. The terms of the supplemental indentures governing the TNMP 2023 Bonds include the customary covenants discussed above. In the event of a change of control, TNMP will be required to offer to prepay the TNMP 2023 Bonds at par. However, the definition of change of control in the supplemental indentures governing the TNMP 2023 Bonds will not be triggered by the close of the Merger. TNMP has the right to redeem any or all of the TNMP 2023 Bonds prior to their maturity, subject to payment of a customary make-whole premium.

On November 10, 2022, PNMR entered into a distribution agreement with BofA Securities, Inc., MUFG Securities Americas Inc. and Wells Fargo Securities, LLC, as sales agents and Bank of America, N.A., MUFG Securities EMEA plc and Wells Fargo Bank, N.A., as forward purchasers, pursuant to which the Company may sell, from time to time, up to an aggregate sales price of $200.0 million of its common stock, no par value, through the sales agents (the “PNMR 2022 ATM Program”).

During the first quarter of 2023, PNMR entered into forward sale agreements with each of Bank of America, N.A. and Wells Fargo Bank, N.A. as forward purchasers relating to the sale of 504,452 and 528,082 shares of common stock, respectively, under the PNMR 2022 ATM Program (the “2023 Q1 Forward Sale Agreements”). The average initial forward sale price of $48.49 per share and $48.30 per share, respectively, are subject to adjustments based on a net interest rate factor and by future dividends paid on PNMR common stock as specified in the 2023 Q1 Forward Sale Agreements. During the second

45

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

quarter of 2023, PNMR entered into additional forward sale agreements with MUFG Securities EMEA plc as forward purchaser relating to the sale of 1,049,116 shares of common stock under the PNMR 2022 ATM Program (the “2023 Q2 Forward Sale Agreements”). The average initial forward sale price of $45.49 per share is subject to adjustments based on a net interest rate factor and by future dividends paid on PNMR common stock as specified in the 2023 Q2 Forward Sale Agreements. During the third quarter of 2023, PNMR entered into an additional forward sale agreement with Wells Fargo Bank, N.A. as forward purchaser relating to the sale of 2,283,860 shares of common stock under the PNMR 2022 ATM Program (the “2023 Q3 Forward Sale Agreement”, and together with the 2023 Q1 Forward Sale Agreements and the 2023 Q2 Forward Sale Agreements, the “2023 Forward Sale Agreements”). The average initial forward sale price of $44.03 per share is subject to adjustments based on a net interest rate factor and by future dividends paid on PNMR common stock as specified in the 2023 Q3 Forward Sale Agreement. PNMR did not initially receive any proceeds upon the execution of the 2023 Forward Sale Agreements and, except in certain specified circumstances, has the option to elect physical, cash, or net share settlement of the forward sale agreements on or before a date that is 12 months from the agreement effective dates.

The Company expects to receive proceeds from the sale of shares upon future physical settlement(s) of the 2023 Forward Sale Agreements, in which case the Company will deliver newly issued shares to the forward purchasers in exchange for cash in an amount equal to the number of shares delivered multiplied by the then-applicable forward sale price. PNMR also has the option to net settle the agreements in cash or shares of PNMR common stock. Under a net cash settlement, under which no PNMR common stock would be issued, PNMR would receive net proceeds for a decrease in the market value of PNMR’s common stock relative to the then-applicable forward sales price per share, or would owe cash in the event of an increase in the market value of PNMR common stock. Under a net share settlement, PNMR would not receive any cash proceeds and may be required to deliver a sufficient number of shares of PNMR common stock to satisfy its obligation to the forward purchasers. The number of shares to be delivered to the forward purchasers would be based on the increase in PNMR’s common stock price relative to the then-applicable forward sales price per share. The forward sale agreements meet the derivative scope exception requirements for contracts involving an entity’s own equity. Until settlement of the forward sale agreements, PNMR’s EPS dilution resulting from the agreements, if any, will be determined using the treasury stock method, which will result in dilution during periods when the average market price of PNMR stock during the reporting period is higher than the applicable forward sales price as of the end of that period. As of September 30, 2023, all $200.0 million of common stock available for sale under the PNMR 2022 ATM Program has been sold, thus concluding the program, and no shares have been settled under the 2023 Forward Sale Agreements.

On August 5, 2022, PNM entered into a $225.0 million delayed-draw term loan agreement (the “PNM 2022 Delayed-Draw Term Loan”), among PNM, the lenders parties thereto, and Royal Bank of Canada, as administrative agent. PNM initially drew $180.0 million to repay the $75.0 million PNM 2021 Term Loan ahead of its December 2022 maturity and for other corporate purposes. On September 30, 2022, PNM drew the remaining $45.0 million and used the proceeds for general corporate purposes. Draws on the PNM 2022 Delayed-Draw Term Loan bear interest at a variable rate, which was 6.18% at September 30, 2023 and must be repaid on or before February 5, 2024.

On April 27, 2022, TNMP entered into an agreement (the “TNMP 2022 Bond Purchase Agreement”) with institutional investors for the sale of $160.0 million aggregate principal amount of two series of TNMP first mortgage bonds (the “TNMP 2022 Bonds”) offered in private placement transactions. TNMP issued the first series of $65.0 million of the TNMP 2022 Bonds on May 12, 2022, at a 4.13% interest rate, due May 12, 2052, and the second series of $95.0 million of the TNMP 2022 Bonds on July 28, 2022, at a 3.81% interest rate, due July 28, 2032. The proceeds were used to repay borrowings under the TNMP Revolving Credit Facility and for other corporate purposes. The TNMP 2022 Bonds are subject to continuing compliance with the representations, warranties and covenants set forth in the supplemental indentures governing the TNMP 2022 Bonds. The terms of the supplemental indentures governing the TNMP 2022 Bonds include the customary covenants discussed above. In the event of a change of control, TNMP will be required to offer to prepay the TNMP 2022 Bonds at par. However, the definition of change of control in the supplemental indentures governing the TNMP 2022 Bonds will not be triggered by the close of the Merger. TNMP has the right to redeem any or all of the TNMP 2022 Bonds prior to their maturity, subject to payment of a customary make-whole premium.

At December 31, 2021, PNM had $104.5 million PCRBs outstanding with a mandatory remarketing date of June 1, 2022, consisting of $36.0 million at 1.05% issued by the Maricopa County, Arizona Pollution Control Corporation with a final maturity of January 2038; $37.0 million at 2.125% issued by the City of Farmington, New Mexico with a final maturity of June 2040; $11.5 million at 1.20% issued by the City of Farmington, New Mexico with a final maturity of June 2040; and $20.0 million at 2.45% issued by the City of Farmington, New Mexico with a final maturity of September 2042. On June 1, 2022, PNM remarketed to new investors the $36.0 million and $37.0 million series in the tax-exempt market at 3.00% with a

46

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

mandatory put date of June 1, 2024. PNM purchased and redeemed the remaining two series of PCRBs, totaling $31.5 million, on June 1, 2022.

At September 30, 2023, variable interest rates were 6.37% on the PNMR 2021 Delayed-Draw Term Loan that matures in May 2025, 6.77% on the PNMR 2023 Term Loan that matures in June 2026, and 6.18% on the PNM 2022 Delayed-Draw Term Loan that matures in February 2024.

Hedging Arrangements

PNMR has entered into hedging agreements that establish a fixed rate for the indicated amount of variable rate debt, above which a customary spread is applied, which is subject to change if there is a change in PNMR’s credit rating. As of September 30, 2023, PNMR’s hedging agreements are as follows:

		Variable Rate		Established
Effective Date	Maturity Date	Debt Hedged		Fixed Rate
		(In millions)		(Percent)
March 17, 2023	September 30, 2023	$	150.0	4.57	%
October 31, 2022	December 31, 2023	100.0		4.65
October 31, 2022	December 31, 2023	100.0		4.66
September 30, 2022	December 31, 2023	100.0		4.17
September 30, 2022	December 31, 2023	100.0		4.18
May 20, 2022	December 31, 2023	100.0		2.52
May 2, 2022	December 31, 2023	150.0		2.65
May 2, 2022	December 31, 2023	200.0		2.65
January 1, 2024	December 31, 2024	100.0		3.32
January 1, 2024	December 31, 2024	100.0		3.32
January 1, 2024	December 31, 2024	100.0		3.38
January 1, 2024	December 31, 2024	150.0		3.62
January 1, 2024	December 31, 2024	150.0		3.57

These hedge agreements are accounted for as cash flow hedges. The fair value of these hedges was a gain of $14.0 million at September 30, 2023, $4.0 million of which is included in Other current assets and $10.0 million of which is included in Other deferred charges on the Condensed Consolidated Balance Sheets. The fair value was determined using Level 2 inputs under GAAP, including using forward SOFR curves under the mid-market convention to discount cash flows over the remaining term of the agreements.

Short-term Debt and Liquidity

Currently, the PNMR Revolving Credit Facility has a financing capacity of $300.0 million and the PNM Revolving Credit Facility has a financing capacity of $400.0 million. On May 20, 2022, both PNMR and PNM extended the facilities to October 31, 2024 with two one-year extension options that, if exercised, would extend the maturity through October 2026, subject to approval by a majority of the lenders. On January 26, 2023, PNMR and PNM exercised one of the one-year extension options in their respective agreements, extending their maturities through October 2025; provided that, effective November 1, 2024, the capacity of the PNMR Revolving Credit Facility will adjust to $285.0 million and the PNM Revolving Credit Facility will adjust to $380.0 million because one lender in each facility did not agree to the one-year extension through October 2025. Also on May 20, 2022, the $40.0 million PNM New Mexico Credit Facility was extended to May 20, 2026. On March 11, 2022, the TNMP Revolving Credit Facility, with a capacity of $75.0 million and secured by $75.0 million aggregate principal amount of TNMP first mortgage bonds, was amended to extend the maturity to September 23, 2024, with two one-year extension options that, if exercised, would extend the maturity to September 2026, subject to approval by a majority of the lenders. The amended TNMP Revolving Credit Facility also contained an accordion feature that would allow TNMP to increase the size of the revolver from $75.0 million to $100.0 million, subject to certain conditions. On May 13, 2022, TNMP exercised the accordion feature and increased the capacity of the TNMP Revolving Credit Facility to $100.0 million, secured by $100.0 million aggregate principal amount of TNMP first mortgage bonds. On January 26, 2023, TNMP exercised one of the one-year extension options on its credit facility, which extended the maturity to September 23, 2025. Variable interest rates under the PNMR, PNM, and TNMP revolving credit facilities are based on SOFR.

47

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Short-term debt outstanding consists of:

	September 30, 2023			December 31, 2022
	Balance Outstanding		Weighted Average Interest Rate	Balance Outstanding		Weighted Average Interest Rate
	(In thousands)			(In thousands)
PNM:
PNM Revolving Credit Facility	$	126,900	6.68%	$	145,900	5.67%
PNM New Mexico Credit Facility	40,000		6.67	40,000		5.68
	166,900			185,900
TNMP Revolving Credit Facility	39,800		6.29	36,700		5.29
PNMR Revolving Credit Facility	198,800		6.92	9,400		5.90
	$	405,500		$	232,000

In addition to the above borrowings, PNMR, PNM, and TNMP had letters of credit outstanding of $3.1 million, zero, and zero at September 30, 2023 that reduce the available capacity under their respective revolving credit facilities. PNMR also had $30.3 million of letters of credit outstanding under the WFB LOC Facility. The above table excludes intercompany debt. As of September 30, 2023, PNM, TNMP, and PNMR Development had zero, zero, and $0.1 million in intercompany borrowings from PNMR. As of December 31, 2022, neither PNM, TNMP, nor PNMR Development had any intercompany borrowings from PNMR. PNMR had zero and $5.3 million in intercompany borrowings from PNMR Development at September 30, 2023 and December 31, 2022.

The Company’s debt arrangements have various maturities and expiration dates. PNM has $225.0 million from the PNM 2022 Delayed Draw Term Loan that is due in February 2024 and $198.0 million of PCRBs that mature in June 2024. TNMP has $80.0 million of FMBs that are due in July 2024. Additional information on debt maturities is contained in Note 7 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

(10)   Pension and Other Postretirement Benefit Plans

PNMR and its subsidiaries maintain qualified defined benefit pension plans, postretirement benefit plans providing medical and dental benefits, and executive retirement programs (collectively, the “PNM Plans” and “TNMP Plans”). PNMR maintains the legal obligation for the benefits owed to participants under these plans. The periodic costs or income of the PNM Plans and TNMP Plans are included in regulated rates to the extent attributable to regulated operations. The Company presents the service cost component of its net periodic benefit costs in administrative and general expenses and the non-service costs components in other income (deductions), net of amounts capitalized or deferred to regulatory assets and liabilities, on the Condensed Consolidated Statements of Earnings. PNM and TNMP receive a regulated return on the amounts funded for pension and OPEB plans in excess of accumulated periodic cost or income to the extent included in retail rates (a “prepaid pension asset”).

Additional information concerning pension and OPEB plans is contained in Note 11 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K. Annual net periodic benefit cost for the plans is actuarially determined using the methods and assumptions set forth in that note and is recognized ratably throughout the year. Differences between TNMP’s annual net periodic costs (income) and amounts included in its regulated rates are deferred to regulatory assets or liabilities, for recovery or refund in future rate proceedings.

48

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

PNM Plans

The following table presents the components of the PNM Plans’ net periodic benefit cost:

	Three Months Ended September 30,
	Pension Plan				OPEB Plan				Executive Retirement Program
	2023		2022		2023		2022		2023		2022
	(In thousands)
Components of Net Periodic Benefit Cost
Service cost	$	—	$	—	$	—	$	2	$	—	$	—
Interest cost	5,913		4,215		675		479		135		90
Expected return on plan assets	(7,299)		(7,140)		(1,242)		(1,088)		—		—
Amortization of net loss	2,646		3,948		—		—		38		81
Amortization of prior service cost	—		—		—		—		—		—
Net Periodic Benefit Cost (Income)	$	1,260	$	1,023	$	(567)	$	(607)	$	173	$	171
	Nine Months Ended September 30,
	Pension Plan				OPEB Plan				Executive Retirement Program
	2023		2022		2023		2022		2023		2022
	(In thousands)
Components of Net Periodic Benefit Cost
Service cost	$	—	$	—	$	—	$	6	$	—	$	—
Interest cost	17,740		12,643		2,027		1,437		405		270
Expected return on plan assets	(21,897)		(21,422)		(3,727)		(3,264)		—		—
Amortization of net loss	7,937		11,846		—		—		114		245
Amortization of prior service cost	—		—		—		—		—		—
Net Periodic Benefit Cost (Income)	$	3,780	$	3,067	$	(1,700)	$	(1,821)	$	519	$	515

PNM did not make any contributions to its pension plan trust in the nine months ended September 30, 2023 and 2022 and does not anticipate making any contributions to the pension plan in 2023 through 2026 based on current law, funding requirements, and estimates of portfolio performance. In 2027, PNM does anticipate making a contribution of $0.4 million based on current law, funding requirements, and estimates of portfolio performance. Funding assumptions were developed using a discount rate of 5.7%. Actual amounts to be funded in the future will be dependent on the actuarial assumptions at that time, including the appropriate discount rate. PNM may make additional contributions at its discretion. PNM did not make any cash contributions to the OPEB trust in the nine months ended September 30, 2023 and 2022, however, a portion of the disbursements attributable to the OPEB trust is paid by PNM and are therefore considered to be contributions to the OPEB plan. Payments by PNM on behalf of the PNM OPEB plan were less than $0.1 million and $0.1 million for the three and nine months ended September 30, 2023 and $0.9 million and $2.4 million for the three and nine months ended September 30, 2022. These payments are expected to total $0.2 million in 2023 and $9.0 million for 2024-2027. Disbursements under the executive retirement program, which are funded by PNM and considered to be contributions to the plan, were $0.4 million and $1.0 million in the three and nine months ended September 30, 2023 and $0.4 million and $1.0 million in the three and nine months ended September 30, 2022 and are expected to total $1.3 million during 2023 and $4.5 million for 2024-2027.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

TNMP Plans

The following table presents the components of the TNMP Plans’ net periodic benefit cost:

	Three Months Ended September 30,
	Pension Plan				OPEB Plan				Executive Retirement Program
	2023		2022		2023		2022		2023		2022
	(In thousands)
Components of Net Periodic Benefit Cost
Service cost	$	—	$	—	$	5	$	9	$	—	$	—
Interest cost	601		430		106		77		3		2
Expected return on plan assets	(674)		(618)		(120)		(104)		—		—
Amortization of net (gain) loss	110		233		(190)		(130)		—		—
Amortization of prior service cost	—		—		—		—		—		—
Net Periodic Benefit Cost (Income)	$	37	$	45	$	(199)	$	(148)	$	3	$	2
	Nine Months Ended September 30,
	Pension Plan				OPEB Plan				Executive Retirement Program
	2023		2022		2023		2022		2023		2022
	(In thousands)
Components of Net Periodic Benefit Cost
Service cost	$	—	$	—	$	16	$	27	$	—	$	—
Interest cost	1,802		1,290		319		231		9		8
Expected return on plan assets	(2,023)		(1,854)		(361)		(312)		—		—
Amortization of net (gain) loss	329		699		(570)		(390)		—		—
Amortization of prior service cost	—		—		—		—		—		—
Net Periodic Benefit Cost (Income)	$	108	$	135	$	(596)	$	(444)	$	9	$	8

TNMP did not make any contributions to its pension plan trust in the nine months ended September 30, 2023 and 2022 and does not anticipate making any contributions to the pension plan in 2023 through 2027 based on current law, funding requirements, and estimates of portfolio performance. Funding assumptions were developed using a discount rate of 5.8%. Actual amounts to be funded in the future will depend on the actuarial assumptions at that time, including the appropriate discount rate. TNMP may make additional contributions at its discretion. TNMP did not make any contributions to the OPEB trust in the three and nine months ended September 30, 2023 and 2022 and does not expect to make contributions to the OPEB trust during the period 2023-2027. Disbursements under the executive retirement program, which are funded by TNMP and considered to be contributions to the plan, were zero in the three and nine months ended September 30, 2023 and 2022 and are expected to total $0.1 million during 2023 and $0.2 million in 2024-2027.

(11)   Commitments and Contingencies

Overview

There are various claims and lawsuits pending against the Company. In addition, the Company is subject to federal, state, and local environmental laws and regulations and periodically participates in the investigation and remediation of various sites. In addition, the Company periodically enters into financial commitments in connection with its business operations. Also, the Company is involved in various legal and regulatory proceedings in the normal course of its business. See Note 12. It is not possible at this time for the Company to determine fully the effect of all litigation and other legal and regulatory proceedings on its financial position, results of operations, or cash flows.

With respect to some of the items listed below, the Company has determined that a loss is not probable or that, to the extent probable, cannot be reasonably estimated. In some cases, the Company is not able to predict with any degree of certainty the range of possible loss that could be incurred. The Company assesses legal and regulatory matters based on current

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

information and makes judgments concerning their potential outcome, giving due consideration to the nature of the claim, the amount and nature of any damages sought, and the probability of success. Such judgments are made with the understanding that the outcome of any litigation, investigation, or other legal proceeding is inherently uncertain. The Company records liabilities for matters where it is probable a loss has been incurred and the amount of loss is reasonably estimatable. The actual outcomes of the items listed below could ultimately differ from the judgments made and the differences could be material. The Company cannot make any assurances that the amount of reserves or potential insurance coverage will be sufficient to cover the cash obligations that might be incurred as a result of litigation or regulatory proceedings. Except as otherwise disclosed, the Company does not expect that any known lawsuits, environmental costs, or commitments will have a material effect on its financial condition, results of operations, or cash flows.

Additional information concerning commitments and contingencies is contained in Note 16 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

Commitments and Contingencies Related to the Environment

Nuclear Spent Fuel and Waste Disposal

Nuclear power plant operators are required to enter into spent fuel disposal contracts with the DOE that require the DOE to accept and dispose of all spent nuclear fuel and other high-level radioactive wastes generated by domestic power reactors. Although the Nuclear Waste Policy Act required the DOE to develop a permanent repository for the storage and disposal of spent nuclear fuel by 1998, the DOE announced that it would not be able to open the repository by 1998 and sought to excuse its performance of these requirements. In November 1997, the DC Circuit issued a decision preventing the DOE from excusing its own delay but refused to order the DOE to begin accepting spent nuclear fuel. Based on this decision and the DOE’s delay, a number of utilities, including APS (on behalf of itself and the other PVNGS owners, including PNM), filed damages actions against the DOE in the Court of Federal Claims. The lawsuits filed by APS alleged that damages were incurred due to DOE’s continuing failure to remove spent nuclear fuel and high-level waste from PVNGS. In August 2014, APS and the DOE entered into a settlement agreement that established a process for the payment of claims for costs incurred through December 31, 2019. APS has accepted the DOE’s extensions of the settlement agreement for recovery of costs incurred through December 31, 2025. Under the settlement agreement, APS must submit claims annually for payment of allowable costs. PNM records estimated claims on a quarterly basis. The benefit from the claims is passed through to customers under the FPPAC.

PNM estimates that it will incur approximately $59.6 million (in 2019 dollars) for its share of the costs related to the on-site interim storage of spent nuclear fuel at PVNGS during the term of the operating licenses. PNM accrues these costs as a component of fuel expense as the nuclear fuel is consumed. At September 30, 2023 and December 31, 2022, PNM had a liability for interim storage costs of $11.2 million and $12.0 million, which is included in other deferred credits.

PVNGS has sufficient capacity at its on-site Independent Spent Fuel Storage Installation (“ISFSI”) to store all of the nuclear fuel that will be irradiated during the initial operating license period, which ends in December 2027.  Additionally, PVNGS has sufficient capacity at its on-site ISFSI to store a portion of the fuel that will be irradiated during the period of extended operation, which ends in November 2047.  If uncertainties regarding the U.S. government’s obligation to accept and store spent fuel are not favorably resolved, APS will evaluate alternative storage solutions that may obviate the need to expand the ISFSI to accommodate all of the fuel that will be irradiated during the period of extended operation.

The Energy Transition Act

New Mexico state law Senate Bill 489, known as the Energy Transition Act (“ETA”) became effective as of June 14, 2019 and sets a statewide standard that requires investor-owned electric utilities to have specified percentages of their electric-generating portfolios be from renewable and zero-carbon generating resources. The ETA requires utilities operating in New Mexico to have renewable portfolios equal to 40% by 2025, 50% by 2030, 80% by 2040, and 100% zero-carbon energy by 2045. The ETA also allows for the recovery of undepreciated investments and decommissioning costs related to qualifying EGUs that the NMPRC has required be removed from retail jurisdictional rates, provided replacement resources to be included in retail rates have lower or zero-carbon emissions. The ETA requires the NMPRC to review and approve utilities’ annual renewable portfolio plans to ensure compliance with the RPS. The ETA also directs the New Mexico Environmental Improvement Board to adopt standards of performance that limit CO2 emissions to no more than 1,100 lbs. per MWh beginning January 1, 2023 for new or existing coal-fired EGUs with original installed capacities exceeding 300 MW.

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(Unaudited)

The ETA provides for a transition from fossil-fuel generation resources to renewable and other carbon-free resources through certain provisions relating to the abandonment of coal-fired generating facilities. These provisions include the use of energy transition bonds, which are designed to be highly rated bonds that can be issued to finance certain costs of abandoning coal-fired facilities that are retired prior to January 1, 2023 for facilities operated by a “qualifying utility,” or prior to January 1, 2032 for facilities that are not operated by a qualifying utility. The amount of energy transition bonds that can be issued to recover abandonment costs is limited to the lesser of $375.0 million or 150% of the undepreciated investment of the facility as of the abandonment date. Proceeds provided by energy transition bonds must be used only for purposes related to providing utility service to customers and to pay energy transition costs (as defined by the ETA). These costs may include plant decommissioning and coal mine reclamation costs provided those costs have not previously been recovered from customers or disallowed by the NMPRC or by a court order. Proceeds from energy transition bonds may also be used to fund severances for employees of the retired facility and related coal mine and to promote economic development, education and job training in areas impacted by the retirement of the coal-fired facilities. Energy transition bonds must be issued under a NMPRC-approved financing order, are secured by “energy transition property,” are non-recourse to the issuing utility, and are repaid by a non-bypassable charge paid by all customers of the issuing utility. These customer charges are subject to an adjustment mechanism designed to provide for timely and complete payment of principal and interest due under the energy transition bonds.

The ETA also provides that utilities must obtain NMPRC approval of competitively procured replacement resources that shall be evaluated based on their cost, economic development opportunity, ability to provide jobs with comparable pay and benefits to those lost upon retirement of the facility, and that do not exceed emissions thresholds specified in the ETA. In determining whether to approve replacement resources, the NMPRC must give preference to resources with the least environmental impacts, those with higher ratios of capital costs to fuel costs, and those located in the school district of the abandoned facility. The ETA also provides for the procurement of energy storage facilities and gives utilities discretion to maintain, control, and operate these systems to ensure reliable and efficient service.

The ETA has had and will have a significant impact on PNM’s future generation portfolio, including PNM’s retirement of SJGS in 2022 and the potential early exit of Four Corners (subject to regulatory approval). PNM cannot predict the full impact of the ETA or the outcome of its pending and potential future generating resource abandonment and replacement resource filings with the NMPRC. See additional discussion in Note 12 of PNM’s SJGS and Four Corners Abandonment Applications.

The Clean Air Act

Regional Haze

In 1999, EPA developed a regional haze program and regional haze rules under the CAA. The rule directs each of the 50 states to address regional haze. Pursuant to the CAA, states are required to establish goals for improving visibility in national parks and wilderness areas (also known as Class I areas) and to develop long-term strategies for reducing emissions of air pollutants that cause visibility impairment in their own states and for preventing degradation in other states. States must establish a series of interim goals to ensure continued progress by adopting a new SIP every ten years. In the first SIP planning period, states were required to conduct BART determinations for certain covered facilities, including utility boilers, built between 1962 and 1977 that have the potential to emit more than 250 tons per year of visibility impairing pollution. If it was demonstrated that the emissions from these sources caused or contributed to visibility impairment in any Class I area, BART must have been installed by the beginning of 2018. For all future SIP planning periods, states must evaluate whether additional emissions reduction measures may be needed to continue making reasonable progress toward natural visibility conditions.

In 2017, EPA published revisions to the regional haze rule in the Federal Register. The new rule delayed the due date for the next cycle of SIPs from 2019 to 2021, altered the planning process that states must employ in determining whether to impose “reasonable progress” emission reduction measures, and gave new authority to federal land managers to seek additional emission reduction measures outside of the states’ planning process. Finally, the rule made several procedural changes to the regional haze program, including changes to the schedule and process for states to file 5-year progress reports. EPA’s new rule was challenged by numerous parties. On January 19, 2018, EPA filed a motion to hold the case in abeyance in light of several letters issued by EPA on January 17, 2018 to grant various petitions for reconsideration of the 2017 rule revisions. EPA’s decision to revisit the 2017 rule is not a determination on the merits of the issues raised in the petitions.

In 2018, EPA released a new guidance document on tracking visibility progress for the second planning period. EPA is allowing states discretion to develop SIPs that may differ from EPA’s guidance as long as they are consistent with the CAA and other applicable regulations. In 2019, EPA finalized the draft guidance that was previously released as a companion to the regional haze rule revisions, and EPA clarified that guidance in a memorandum issued in 2021. SIPs for the second planning

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(Unaudited)

period were due in July 2021, which deadline NMED was unable to meet. NMED is currently preparing its SIP for the second compliance period and has notified PNM that it will not be required to submit a regional haze four-factor analysis for SJGS since PNM retired its share of SJGS in 2022. On April 7, 2022, EPA announced its intent to make findings by August 31, 2022 of the states that have failed to submit regional haze implementation plans for the second planning period and directed states to file their plans by August 15, 2022 to avoid inclusion in that finding. Despite that announcement, on April 13, 2022, four environmental groups sued EPA in the U.S. District Court for the Northern District of California seeking to compel EPA to issue a finding that 34 states failed to submit regional haze SIPs for the second planning period. On August 30, 2022, EPA published in the Federal Register an official “Finding of Failure to Submit” for states, including New Mexico, that have not yet submitted a round 2 regional haze SIP. This action by EPA starts a 2-year clock for it to issue a Federal Implementation Plan (FIP). NMED’s current timeline indicates the proposed SIP will be submitted to EPA by October 2023.

Carbon Dioxide Emissions

In 2015, EPA established standards to limit CO2 emissions from power plants, including (1) Carbon Pollution Standards for new, modified, and reconstructed power plants; and (2) the Clean Power Plan for existing power plants.

Multiple states, utilities, and trade groups filed petitions for review in the DC Circuit to challenge both the Carbon Pollution Standards for new sources and the Clean Power Plan for existing sources in separate cases. Challengers successfully petitioned the US Supreme Court for a stay of the Clean Power Plan. However, before the DC Circuit could issue an opinion regarding either the Carbon Pollution Standards or the Clean Power Plan, the Trump Administration asked that the case be held in abeyance while the rules were reevaluated, which was granted.

In 2019, EPA repealed the Clean Power Plan, promulgated the ACE Rule, and revised the implementing regulations for all emission guidelines. EPA set the BSER for existing coal-fired power plants as heat rate efficiency improvements based on a range of “candidate technologies” that can be applied inside the fence line of an individual facility. The DC Circuit issued an order that granted motions by various petitioners, including industry groups and EPA, to dismiss the cases challenging the Clean Power Plan as moot due to EPA’s issuance of the ACE Rule.

The ACE Rule was also challenged, and on January 19, 2021, the DC Circuit issued an opinion in American Lung Association and American Public Health Association v. EPA, et al., finding that EPA misinterpreted the CAA when it determined that the language of Section 111 unambiguously barred consideration of emissions reduction options that were not applied at the source. As a result, the court vacated the ACE Rule and remanded the record back to the EPA for further consideration consistent with the court’s opinion. While the DC Circuit rejected the ACE Rule, it did not reinstate the Clean Power Plan. EPA filed a motion seeking a partial stay of the mandate as to the repeal of the Clean Power Plan, to ensure the court’s order will not render effective the now out-of-date Clean Power Plan. On February 22, 2021, the U.S. Court of Appeals for the DC Circuit granted EPA’s motion, indicating that it would withhold issuance of the mandate with respect to the repeal of the Clean Power Plan until EPA responds to the court’s remand in a new rulemaking action.

On October 29, 2021, the US Supreme Court granted four petitions for writs of certiorari of the D.C. Circuit’s decisions, and on June 30, 2022, the US Supreme Court held that the “generation shifting” approach in the Clean Power Plan exceeded the powers granted to EPA by Congress, though the Court did not address the related issue of whether Section 111 of the CAA only authorizes EPA to require measures that can be implemented entirely within the fenceline at an individual source. Of broader significance in administrative law, the Court expressly invoked the major question doctrine as a basis for rejecting EPA’s statutory interpretation. The basic principle of the major question doctrine is that, if an agency seeks to decide an issue of “vast economic or political significance,” its action must be supported by clear statutory authorization. In cases where there is no authority, courts need not defer to the agency’s statutory interpretation. The decision sets legal precedent for future rulemakings by EPA and other federal regulatory agencies whereby the agencies’ authority may be limited based upon similar reasoning.

The litigation over the Carbon Pollution Standards remains held in abeyance but could be reactivated by the parties upon a determination by the court that reconsideration of the rule has concluded.

On May 23, 2023, EPA published in the Federal Register proposed regulatory actions under CAA sections 111(b) and (d) to reduce GHGs from fossil-fueled EGUs. The proposed regulations cover: (1) New natural gas-based EGUs under section 111(b); (2) Existing large and frequently operated natural gas-based EGUs under section 111(d); and (3) Existing coal-based EGUs under section 111(d). Standards of performance for existing coal EGUs will be based on two technologies depending on retirement date: carbon capture and storage/sequestration (“CCS”) or co-firing gas in lieu of coal. For gas-based EGUs, the

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(Unaudited)

standards will be based on CCS or the use of green hydrogen in lieu of natural gas. States will be required to develop SIPs to EPA that provide for the establishment, implementation and enforcement of these standards as they apply to existing sources. States may take into account remaining useful life and other factors when establishing the standards. EPA is proposing that existing coal units must start complying with their gas co-firing or CCS based standards of performance on January 1, 2030, unless they commit to retirement before 2032 (or retirement by 2035 if they also commit to a 20% annual operating limit). Existing combustion turbine units must start complying with their hydrogen or CCS based standards of performance on January 1, 2032, or January 1, 2035, depending on their subcategory, which is based on the control technology selected. The package also includes a proposed repeal of the ACE rule and revisions to the standard for modified and reconstructed units, along with a notice of public rulemaking seeking data and information about setting standards for existing smaller natural gas-based generators. Comments on the rule were due to EPA by August 8, 2023. PNM filed company-specific comments and continues to review the proposed rule and its potential impacts on the company’s fossil generation resources.

On January 27, 2021, President Biden signed an extensive Executive Order aimed at addressing climate change concerns domestically and internationally. The order is intended to build on the initial climate-related actions the Biden Administration took on January 20, 2021. It addresses a wide range of issues, including establishing climate change concerns as an essential element of U.S. foreign and security policy, identifying a process to determine the U.S. INDC under the Paris Agreement, and establishing a Special Presidential Envoy for Climate that will sit on the National Security Council. On April 22, 2021, at the Earth Day Summit, as part of the U.S.’s re-entry into the Paris Agreement, President Biden unveiled the goal to cut U.S. emissions by 50% - 52% from 2005 levels by 2030, nearly double the GHG emissions reduction target set by the Obama Administration. The 2030 goal joins President Biden’s other climate goals which include a carbon pollution-free power sector by 2035 and a net-zero emissions economy by no later than 2050.

PNM’s review of the GHG emission reductions standards that may occur as a result of legislation or regulation under the Biden Administration and in response to the court’s ruling on the ACE Rule is ongoing. PNM cannot predict the impact these standards may have on its operations or a range of the potential costs of compliance, if any.

National Ambient Air Quality Standards (“NAAQS”)

The CAA requires EPA to set NAAQS for pollutants reasonably anticipated to endanger public health or welfare. EPA has set NAAQS for certain pollutants, including NOx, SO2, ozone, and particulate matter.

NOx Standard – In 2018, EPA published the final rule to retain the current primary health-based NOx standards of which NO2 is the constituent of greatest concern and is the indicator for the primary NAAQS. EPA concluded that the current 1-hour and annual primary NO2 standards are requisite to protect public health with an adequate margin of safety. The rule became effective on May 18, 2018. The State of New Mexico has attained the current NOx NAAQS standards.

SO2 Standard – In 2019, EPA announced its final decision to retain, without changes, the primary health-based NAAQS for SO2. Specifically, EPA will retain the current 1-hour standard for SO2, which is 75 parts per billion, based on the 3-year average of the 99th percentile of daily maximum 1-hour SO2 concentrations.

On March 26, 2021, EPA published in the Federal Register the initial air quality designations for all remaining areas not yet designated under the 2010 SO2 Primary NAAQS. This is EPA’s fourth and final set of actions to designate areas of the U.S. for the 2010 SO2 NAAQS. All areas of New Mexico have been designated attainment/unclassifiable through four rounds of designations by EPA.

Ozone Standard – In 2015, EPA finalized the new ozone NAAQS and lowered both the primary and secondary 8-hour standard from 75 to 70 parts per billion. With ozone standards becoming more stringent, fossil-fueled generation units will come under increasing pressure to reduce emissions of NOx and volatile organic compounds since these are the pollutants that form ground-level ozone. On July 13, 2020, EPA proposed to retain the existing ozone NAAQS based on a review of the full body of currently available scientific evidence and exposure/risk information. EPA finalized its decision to retain the ozone NAAQS in a notice published on December 31, 2020, making it immediately effective. The Center for Biological Diversity filed a lawsuit on February 25, 2021, challenging the decision to retain the existing ozone standard. In response to lawsuits brought by states and environmental groups, on October 29, 2021, EPA filed a motion in the DC Circuit indicating it will reconsider the 2020 ozone NAAQS. In April 2022, EPA released an External Review Draft Policy Assessment for the reconsideration of the ozone NAAQS, in which EPA Staff recommended that EPA retain the existing primary and secondary ozone NAAQS. On March 15, 2023, EPA published an updated draft policy assessment and indicated the revised assessment is being developed for consideration by the EPA Administrator in reaching a decision on the reconsideration of the December

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PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

2020 decision to retain the existing ozone NAAQS. However, on August 21, 2023, EPA announced an entirely new review of the ozone standard that will incorporate the work to date on the reconsideration, likely indicating a delay in the schedule for a decision on whether the standard should be revised.

In 2015, EPA proposed a rule revising its Exceptional Events Rule, which outlines the requirements for excluding air quality data (including ozone data) from regulatory decisions if the data is affected by events outside an area’s control. The proposed rule is important in light of the more stringent ozone NAAQS final rule since western states like New Mexico and Arizona are subject to elevated background ozone transport from natural local sources, such as wildfires and stratospheric inversions, and transported via winds from distant sources in other regions or countries. EPA finalized the rule on October 3, 2016 and released related guidance in 2018 and 2019 to help implement its new exceptional events policy.

During 2017 and 2018, EPA released rules establishing area designations for ozone. In those rules, San Juan County, New Mexico, where Four Corners is located, is designated as attainment/unclassifiable and only a small area in Doña Ana County, New Mexico is designated as marginal non-attainment. Although Afton Generating Station is located in Doña Ana County, it is not located within the small area designated as non-attainment for the 2015 ozone standard. The rule became effective May 8, 2018.

NMED has responsibility for bringing the small area in Doña Ana County designated as marginal/non-attainment for ozone into compliance and will look at all sources of NOx and volatile organic compounds. NMED has submitted the required elements for the Sunland Park Ozone Non-attainment Area SIP. This includes a transportation conformity demonstration, a 2017 baseline emissions inventory and emissions statement, and an amendment to the state’s Non-attainment Permitting rules at 20.2.79 New Mexico Administrative Code to conform to EPA’s SIP Requirements Rule for 2015 Q3 NAAQS (i.e., “implementation rule”).

The SIP elements had staggered deadlines and were done in three submissions: (1) the transportation conformity demonstration was completed by the El Paso Metropolitan Planning Organization on behalf of New Mexico in 2019, which is responsible for transportation planning in that area, and the submission received concurrence from EPA and the Federal Highway Administration; (2) the emissions inventory and statement SIP was submitted to EPA in September 2020; and (3) the Non-attainment New Source Review SIP was submitted to EPA on August 10, 2021. On October 15, 2021, EPA proposed to approve New Mexico’s SIP to meet the emissions inventory and statement requirements of the CAA for the Sunland Park Ozone Non-Attainment Area.

PNM does not believe there will be material impacts to its facilities because of NMED’s non-attainment designation of the small area within Doña Ana County. Until EPA approves attainment designations for the Navajo Nation and releases a proposal to implement the revised ozone NAAQS, PNM is unable to predict what impact the adoption of these standards may have on Four Corners. With respect to EPA’s reconsideration of the 2020 decision to retain the 2015 ozone standards, it is expected to be completed by the end of 2023. PNM cannot predict the outcome of this matter.

In 2019, EPA issued findings that several states, including New Mexico, had failed to submit interstate transport SIPs for the 2015 8-hour ozone NAAQS. In response, NMED published the Public Review Draft of the New Mexico 2013 NAAQS Good Neighbor SIP that demonstrates that there are no significant contributions from New Mexico to downwind problems in meeting the federal ozone standard. On March 15, 2023, EPA Administrator Regan signed a final action indicating that an updated analysis suggests New Mexico may be significantly contributing to one or more nonattainment or maintenance areas. The action, was published on June 5, 2023, does not make any final determinations with respect to the state but indicates EPA intends to address New Mexico’s interstate transport obligations in a subsequent action.

PM Standard – On January 30, 2020, EPA published in the Federal Register a notice announcing the availability of a final Policy Assessment for the Review of the NAAQS for Particulate Matter (the “PA”). The 2020 final PA was prepared as part of the review of the primary and secondary PM NAAQS. In the 2020 final PA, EPA recommended lowering the primary annual PM 2.5 standard to between 8 µg/m3 and 10 µg/m3. However, on April 30, 2020, EPA published a proposed rule to retain the current standards for PM due to uncertainties in the data relied upon in the 2020 final PA and EPA published a notice of that final action on December 18, 2020, making it immediately effective. On January 14, 2021, several states and New York City filed a petition for review in the DC Circuit, challenging EPA’s final rule retaining the current primary and secondary PM NAAQS and a similar lawsuit was filed by the Center for Biological Diversity in the DC Circuit. On June 10, 2021, EPA announced that it will reconsider the previous administration’s December 2020 decision to retain the current primary and secondary PM NAAQS and on October 8, 2021, EPA announced the release of a new draft PA stating that available scientific evidence and technical information indicate that the current standards may not be adequate to protect public health and welfare,

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(Unaudited)

as required by the CAA. On June 1, 2022, EPA issued a new final PA that likewise indicates current standards may not be adequate and that available scientific evidence could support lowering the standards.

On January 27, 2023, EPA published in the Federal Register a proposal to lower the annual fine PM standard to between 9-10 µg/m3 but retain the rest of its PM standards, including the current daily fine particulate matter standard, the daily coarse particulate matter standard, and the secondary PM standards. Although the proposal focuses on the range of 9-10 µg/m3, EPA requests comment on a range between 8-11 µg/m3, but that range does not include the current annual standard of 12 µg/m3, indicating EPA will not consider retaining the current standard. Comments on the proposal were due March 28, 2023. EPA’s current regulatory agenda indicates EPA plans to finalize the proposal in October 2023. PNM cannot predict the impacts of the outcome of future rulemaking.

Cooling Water Intake Structures

In 2014, EPA issued a rule establishing national standards for certain cooling water intake structures at existing power plants and other facilities under the Clean Water Act to protect fish and other aquatic organisms by minimizing impingement mortality (the capture of aquatic wildlife on intake structures or against screens) and entrainment mortality (the capture of fish or shellfish in water flow entering and passing through intake structures).

To minimize impingement mortality, the rule provides operators of facilities, such as Four Corners, seven options for meeting Best Technology Available (“BTA”) standards for reducing impingement. The permitting authority must establish the BTA for entrainment on a site-specific basis, taking into consideration an array of factors, including endangered species and social costs and benefits. Affected sources must submit source water baseline characterization data to the permitting authority to assist in the determination. Compliance deadlines under the rule are tied to permit renewal and will be subject to a schedule of compliance established by the permitting authority.

EPA has indicated that it is contemplating a December 31, 2023 compliance deadline. With respect to SJGS, no material changes will result given the shutdown of the plant in September of 2022.

In 2018, several environmental groups sued EPA Region IX in the U.S. Court of Appeals for the Ninth Circuit Court over EPA’s failure to timely reissue the Four Corners NPDES permit. The petitioners asked the court to issue a writ of mandamus compelling EPA Region IX to take final action on the pending NPDES permit by a reasonable date. EPA subsequently reissued the NPDES permit. The permit did not contain conditions related to the cooling water intake structure rule, as EPA determined that the facility has achieved BTA for both impingement and entrainment by operating a closed-cycle recirculation system. Several environmental groups filed a petition for review with EPA’s Environmental Appeals Board (“EAB”) concerning the reissued permit. The environmental groups alleged that the permit was reissued in contravention of several requirements under the Clean Water Act and did not contain required provisions concerning certain revised ELG, existing-source regulations governing cooling-water intake structures, and effluent limits for surface seepage and subsurface discharges from coal-ash disposal facilities. EPA withdrew the Four Corners NPDES permit in order to examine issues raised by the environmental groups. Withdrawal of the permit moots the appeal pending before the EAB. EAB thereafter dismissed the environmental groups’ appeal. EPA issued an updated NPDES permit in 2019. The permit was once again appealed to the EAB and was stayed before the effective date. Oral argument was heard on September 3, 2020. The EAB issued an order denying the petition for review on September 30, 2020. The denial was based on the EAB’s determination that the petitioners had failed to demonstrate that review of the permit was warranted on any of the grounds presented in the petition. Thereafter, the Regional Administrator of the EPA signed a notice of final permit decision, and the NPDES permit was issued on November 9, 2020. The permit became effective December 1, 2020 and will expire on November 30, 2025. On January 22, 2021, the environmental groups filed a petition for review of the EAB’s decision with the U.S. Court of Appeals for the Ninth Circuit. The September 2019 permit remains in effect pending this appeal. On March 21, 2022, EPA provided notice in the Federal Register of a proposed settlement agreement with the environmental groups. The parties subsequently executed the settlement agreement as of May 2, 2022. Under the settlement, the associated case was administratively closed through September 6, 2023, during which time a third-party consultant spent 12 months sampling discharges from Four Corners and EPA spent three months completing an analysis. PNM cannot predict whether the analysis under the settlement agreement will result in changes to the NPDES permit but does not anticipate that it will have a material impact on PNM’s financial position, results of operations, or cash flows.

Effluent Limitation Guidelines

In 2013, EPA published proposed revised wastewater ELG establishing technology-based wastewater discharge limitations for fossil fuel-fired electric power plants.  EPA signed the final Steam Electric ELG rule in 2015. The final rule,

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which became effective on January 4, 2016, phased in the new, more stringent requirements in the form of effluent limits for arsenic, mercury, selenium, and nitrogen for wastewater discharged from wet scrubber systems and zero discharge of pollutants in ash transport water that must be incorporated into plants’ NPDES permits. The 2015 rule required each plant to comply between 2018 and 2023 depending on when it needs a new or revised NPDES permit.

The Steam Electric ELG rule was challenged in the U.S. Court of Appeals for the Fifth Circuit by numerous parties. In 2017, EPA signed a notice indicating its intent to reconsider portions of the rule, and the Fifth Circuit issued an order severing the issues under reconsideration and holding the case in abeyance as to those issues. However, the court allowed challenges to other portions of the rule to proceed. In 2019, the Fifth Circuit granted those challenges and issued an opinion vacating several portions of the rule, specifically those related to legacy wastewater and leachate, for which the court deemed the standards selected by EPA arbitrary and capricious.

In 2017, EPA published a final rule for postponement of certain compliance dates. The rule postponed the earliest date on which compliance with the ELG for these waste streams would be required from November 1, 2018 until November 1, 2020. In 2019, EPA published a proposed rule revising the original ELG while maintaining the compliance dates. In 2020, EPA published in the Federal Register the final Steam Electric ELG and standards for the Steam Electric Power Generating Point Source Category, revising the final 2015 guidelines for both flue gas desulfurization wastewater and bottom ash transport water. The rule requires compliance with new limits as soon as possible on or after October 13, 2021, but no later than December 31, 2025.

On August 3, 2021, EPA published notice that it will undertake a supplemental rulemaking to revise the ELG after completing its review of the rules reconsidered in 2020. As part of this process, EPA will determine whether more stringent limitations and standards are appropriate. On March 29, 2023, EPA published the proposed ELG Rule in the Federal Register. The proposed rule includes stricter limitations on bottom ash transport water, flue gas desulfurization, and coal combustion residual leachate. Also included are flexibilities for coal-powered facilities that will soon decommission or repower. With this proposed rule EPA has extended the date of decommissioning or repowering from December 31, 2028, to December 31, 2032. Comments on the proposed rule were due May 30, 2023. A final rule is expected in April 2024.

Reeves Station discharges cooling tower blowdown to a publicly owned treatment plant and no longer holds an NPDES permit; therefore, it is expected that no requirements will be imposed.

See “Cooling Water Intake Structures” above for additional discussion of Four Corners’ current NPDES permit. Four Corners may be required to change equipment and operating practices affecting boilers and ash handling systems, as well as change its waste disposal techniques during the next NPDES permit renewal in 2023. PNM is unable to predict the outcome of these matters or a range of the potential costs of compliance.

Santa Fe Generating Station

PNM and NMED are parties to agreements under which PNM has installed a remediation system to treat water from a City of Santa Fe municipal supply well and an extraction well to address gasoline contamination in the groundwater at the site of PNM’s former Santa Fe Generating Station and service center. A 2008 NMED site inspection report states that neither the source nor extent of contamination at the site has been determined and that the source may not be the former Santa Fe Generating Station. During 2013 and 2014, PNM and NMED collected additional samples that showed elevated concentrations of nitrate and volatile organic compounds in some of the monitoring wells at the site. In addition, one monitoring well contained free-phase hydrocarbon products. PNM collected a sample of the product for “fingerprint” analysis. The results of this analysis indicated the product was a mixture of older and newer fuels. The presence of newer fuels in the sample suggests the hydrocarbon product likely originated from off-site sources. In 2015, PNM and NMED entered into a memorandum of understanding to address changing groundwater conditions at the site under which PNM agreed to continue hydrocarbon investigation under the supervision of NMED. Qualified costs are eligible for payment through the New Mexico Corrective Action Fund (“CAF”), which is administered by the NMED Petroleum Storage Tank Bureau. In 2019, PNM received notice from NMED that an abatement plan for the site is required to address concentrations of previously identified compounds, unrelated to those discussed above, found in the groundwater. NMED approved PNM’s abatement plan proposal, which covers field work and reporting.

Field work related to the investigation under both the CAF and abatement plan requirements was completed and activities and findings associated with the field work were presented in two separate reports and released to stakeholders in early 2020. Subsequent field work was completed in July 2020 and two reports were released supporting PNM’s contention

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that off-site sources have impacted, and are continuing to impact, the local groundwater in the vicinity of the former Santa Fe Generating Station.

PNM submitted work plans to NMED in January 2021 for review and approval. In December 2021, NMED approved both work plans and work activities were completed by the end of 2022 and a report was submitted to the NMED in the first quarter of 2023.

Groundwater sampling for the abatement plan’s first semiannual work commenced at the beginning of March 2023 and was completed in April 2023. The associated report was completed and submitted to the NMED in July 2023. In addition, the work plan for the 2023 CAF work was completed and submitted to the NMED in July 2023. NMED is expected to approve the work plan in October 2023.

The City of Santa Fe has stopped operating its well at the site, which is needed for PNM’s groundwater remediation system to operate. As a result, PNM has stopped performing remediation activities at the site. However, PNM’s monitoring and other abatement activities at the site are ongoing and will continue until the groundwater meets applicable federal and state standards or until the NMED determines remediation is not required, whichever is earlier. PNM is not able to assess the duration of this project or estimate the impact on its obligations if PNM is required to resume groundwater remediation activities at the site. PNM is unable to predict the outcome of these matters.

Coal Combustion Residuals Waste Disposal

CCRs consisting of fly ash, bottom ash, and gypsum generated from coal combustion and emission control equipment at SJGS are currently disposed of in the surface mine pits adjacent to the plant. SJGS does not operate any CCR impoundments or landfills. The NMMMD currently regulates mine reclamation activities at the San Juan mine, including placement of CCRs in the surface mine pits, with federal oversight by the OSM. APS disposes of CCRs in ponds and dry storage areas at Four Corners.  Ash management at Four Corners is regulated by EPA and the New Mexico State Engineer’s Office.

EPA’s final coal ash rule, which became effective in 2015, included a non-hazardous waste determination for coal ash and sets minimum criteria for existing and new CCR landfills and surface impoundments. In 2016, the Water Infrastructure Improvements for the Nation Act (the “WIIN Act”) was signed into law to address critical water infrastructure needs in the U.S. and contains a number of provisions related to the CCR rules. Among other things, the WIIN Act allows, but does not require, states to develop and submit CCR permit programs for EPA approval, provides flexibility for states to incorporate EPA’s final rule for CCRs or develop other criteria that are at least as protective as EPA’s final rule, and requires EPA to approve state permit programs within 180 days of submission by the state. Because states are not required to implement their own CCR permit programs, EPA will implement the permit program in states that choose not to implement a program, subject to Congressional funding. Until permit programs are in effect, EPA has authority to directly enforce the CCR rule. For facilities located within the boundaries of Native American reservations, such as the Navajo Nation where Four Corners is located, EPA is required to develop a federal permit program regardless of appropriated funds.

In 2018, EPA published a rule that constitutes “Phase One, Part One” of its ongoing reconsideration and revision of the April 17, 2015, CCR rule. The final Phase One, Part One rule includes two types of revisions. The first revision extended the deadline to allow EGUs with unlined impoundments or that fail to meet the uppermost aquifer requirement to continue to receive coal ash until October 31, 2020. This deadline was again extended by subsequent amendments. The rule also authorized a “Participating State Director” or EPA to approve suspension of groundwater monitoring requirements and to issue certifications related to the location restrictions, design criteria, groundwater monitoring, remedy selection and implementation. The rule also modified groundwater protection standards for certain constituents, which include cobalt, molybdenum, lithium, and lead without a maximum contamination level.

In 2019, EPA published a second round of revisions, which are commonly referred to as the “Phase Two” revisions. Phase Two proposed revisions to reporting and accessibility to public information, the “CCR piles” and “beneficial use” definitions and the requirements for management of CCR piles. EPA has reopened and extended the Phase Two comment period several times. EPA has not yet finalized provisions in Phase Two related to beneficial use of CCR and CCR piles. This activity is on EPA’s long-term agenda, which means EPA has no plans to address these issues in the next 12 months.

Since promulgating its Phase Two proposal, EPA has finalized two other rules addressing various CCR rule provisions. In 2019, EPA promulgated its proposed Holistic Approach to Closure Part A (“Part A”), which proposed a new deadline of August 31, 2020, for companies to initiate closure of unlined CCR impoundments. In accordance with the DC Circuit Court of Appeals’ vacatur of portions of the CCR Rule, Part A also proposed changing the classification of compacted soil-lined or clay-

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(Unaudited)

lined surface impoundments from “lined” to “unlined”. In addition, Part A delineated a process for owners/operators to submit requests for alternative closure deadlines based on lack of alternate disposal capacity. EPA issued the final Part A, which became effective on September 28, 2020. This rule finalized the classification of soil-lined and clay-lined surface impoundments as unlined, thus, triggering closure or retrofit requirements for those impoundments. The final Part A also gave operators of unlined impoundments until April 11, 2021 to cease receipt of waste at these units and initiate closure.

In 2020, EPA issued the proposed Holistic Approach to Closure Part B (“Part B”), which delineated the process for owners/operators to submit alternate liner demonstrations for clay-lined surface impoundments that could otherwise meet applicable requirements. Part B also proposed regulations addressing beneficial use for closure of surface impoundments. EPA issued the final Part B rule, which became effective on December 14, 2020. This rule did not include beneficial use of CCR for closure, which EPA explains will be addressed in subsequent rulemaking actions. On May 18, 2023, EPA published a proposed rule on the regulatory requirements for inactive surface impoundments at inactive facilities including groundwater monitoring, corrective action, closure, and post-closure care requirements for all CCR management units (regardless of how or when that CCR was placed), and several technical corrections to the existing regulations. Comments on the proposed rule were due July 17, 2023. A final rule is expected April 2024. EPA intends to issue other rulemakings and finalizing parts of previously proposed rules, including a final rule in October 2024 on remaining Part B issues regarding closure options and annual reporting.

In 2020, EPA published a proposed rule establishing a federal permitting program for the handling of CCR within the boundaries of Native American reservations and in states without their own federally authorized state programs. Permits for units within the boundaries of Native American reservations would be due 18 months after the effective date of the rule. Per the Spring 2023 Regulatory Agenda EPA will issue a final rule in October 2023. EPA is coordinating with the affected permits for the three facilities with CCR disposal units located on Native American lands. PNM cannot predict the outcome of EPA’s rulemaking activity or the outcome of any related litigation, and whether or how such a ruling would affect operations at Four Corners.

The CCR rule does not cover mine placement of coal ash. OSM is expected to publish a proposed rule covering mine placement in the future and will likely be influenced by EPA’s rule and the determination by EPA that CCRs are non-hazardous. PNM cannot predict the outcome of OSM’s proposed rulemaking regarding CCR regulation, including mine placement of CCRs, or whether OSM’s actions will have a material impact on PNM’s operations, financial position, or cash flows. Based upon the requirements of the final Part A CCR rule, PNM conducted a CCR assessment at SJGS and made minor modifications at the plant to ensure that there are no facilities that would be considered impoundments or landfills under the rule. PNM would seek recovery from its retail customers of all CCR costs for jurisdictional assets that are ultimately incurred.

Utilities that own or operate CCR disposal units, such as those at Four Corners, as indicated above, were required to collect sufficient groundwater sampling data to initiate a detection monitoring program.  Four Corners completed the analysis for its CCR disposal units, which identified several units that needed corrective action or needed to cease operations and initiate closure by April 11, 2021. Work is ongoing. Four Corners continues to gather additional groundwater data and perform remedial evaluations and activities. At this time, PNM does not anticipate its share of the cost to complete these corrective actions to close the CCR disposal units, or to gather and perform remedial evaluations on groundwater at Four Corners, will have a significant impact on its operations, financial position, or cash flows.

Other Commitments and Contingencies

Coal Supply

SJGS

The Coal requirements for SJGS were supplied by WSJ LLC. Pricing under the SJGS CSA was primarily fixed, with adjustments to reflect changes in general inflation. Substantially all of SJGS’s coal costs were passed through the FPPAC. See additional discussion of PNM’s SJGS Abandonment Application Note 12. See additional discussion of the SJGS CSA in Note 17 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

Four Corners

APS purchases all of Four Corners’ coal requirements from NTEC, an entity owned by the Navajo Nation, under the Four Corners CSA that expires in 2031. The coal comes from reserves located within the Navajo Nation. The contract provides for pricing adjustments over its term based on economic indices. PNM’s share of the coal costs is being recovered through the FPPAC. In connection with the potential early exit of Four Corners, PNM would make payments to NTEC for

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(Unaudited)

relief from its obligations under the coal supply agreements for Four Corners, which PNM has not proposed to recover from ratepayers. See Note 12 for additional information on PNM’s Four Corners Abandonment Application. See additional discussion of the Four Corners CSA in Note 17 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

Coal Mine Reclamation

As indicated under Coal Combustion Residuals Waste Disposal above, SJGS disposed of CCRs in the surface mine pits adjacent to the plant and Four Corners disposes of CCRs in ponds and dry storage areas.

Under the terms of the SJGS CSA, PNM and the other SJGS owners are obligated to compensate WSJ LLC for all reclamation costs associated with the supply of coal from the San Juan mine. PNM and Westmoreland have entered into an agreement under which mine reclamation services for SJGS would be provided. In 2020, a mine reclamation cost study was completed for the mine that serves SJGS. PNM’s estimate of the costs necessary to reclaim the mine that serves SJGS is subject to many assumptions, including the timing of reclamation, generally accepted practices at the time reclamation activities occur, and current inflation and discount rates. PNM cannot predict the ultimate cost to reclaim the mine that serves SJGS and would seek to recover all costs related to reclaiming the underground mine from its customers but could be exposed to additional loss related to surface mine reclamation.

A coal mine reclamation study for the mine that serves Four Corners was issued in 2019. The study reflected operation of the mine through 2031, the term of the Four Corners CSA. As discussed in Note 12, PNM remains responsible for its share of costs associated with mine reclamation under the Four Corners Purchase and Sale Agreement with NTEC. Under the agreement NTEC and PNM would complete a reclamation study providing the final mine reclamation cost estimate on the date of ownership transfer. PNM would make its final reclamation payment to NTEC based on the reclamation study and would have no further obligations regarding the mine reclamation. In 2020, PNM remeasured its Four Corners reclamation liability, determining that events and circumstances regarding Four Corners, including the Four Corners Purchase and Sale Agreement with NTEC and the Four Corners Abandonment Application indicated that it is more likely than not that PNM’s share of Four Corners coal mine reclamation obligation will be settled in 2024, rather than 2031. The Company is evaluating the facts and circumstances surrounding the potential early exit of Four Corners and will determine next steps.

Based on the most recent estimates, PNM’s remaining payments as of September 30, 2023 for mine reclamation, in future dollars, are estimated to be $56.8 million for the surface mines at both SJGS and Four Corners and $33.3 million for the underground mine at SJGS. At September 30, 2023 and December 31, 2022, liabilities, in current dollars, of $52.9 million and $62.6 million for surface mine reclamation and $28.9 million and $28.2 million for underground mine reclamation were recorded in other deferred credits.

The SJGS owners entered into a reclamation trust funds agreement to provide funding to compensate WSJ LLC for post-term reclamation obligations. The trust funds agreement requires each owner to enter into an individual trust agreement with a financial institution as trustee, create an irrevocable reclamation trust, and periodically deposit funds into the reclamation trust for the owner’s share of the mine reclamation obligation. Deposits, which are based on funding curves, must be made on an annual basis. PNM funded $10.0 million in 2022 and, based on PNM’s reclamation trust fund balance at September 30, 2023, the current funding curves indicate PNM’s required contributions to its reclamation trust fund would be zero in each of the years from 2023 through 2025.

Under the Four Corners CSA, PNM is required to fund its share of estimated final reclamation costs in annual installments into an irrevocable escrow account solely dedicated to the final reclamation cost of the surface mine at Four Corners. PNM contributed $2.4 million in 2022 and $0.2 million in 2023. As discussed above, under the terms of the Four Corners Purchase and Sale Agreement with NTEC, PNM would make additional reclamation payments in 2024 based on the facts and circumstances surrounding the potential early exit of Four Corners.

PNM recovers from retail customers reclamation costs associated with the underground mine. However, the NMPRC capped the amount collected from retail customers for final reclamation of the surface mines at $100.0 million for both SJGS and Four Corners. If future estimates increase the liability for surface mine reclamation, the excess would be expensed at that time. The impacts of changes in New Mexico state law as a result of the enactment of the ETA and regulatory determinations made by the NMPRC may also affect PNM’s financial position, results of operations, and cash flows. See additional discussion regarding PNM’s SJGS and Four Corners Abandonment Applications in Note 12. PNM is currently unable to determine the outcome of these matters or the range of possible impacts.

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(Unaudited)

In connection with certain mining permits relating to the operation of the San Juan mine, Westmoreland was required to post reclamation bonds of $118.7 million with the NMMMD. In order to facilitate the posting of reclamation bonds by sureties on behalf of Westmoreland, PNMR entered into the WFB LOC Facility under which letters of credit aggregating $30.3 million have been issued.

SJGS Decommissioning

On November 9, 2021, the San Juan County Commission approved the Coal-Fired Electricity Generating Facility Demolition and Remediation Ordinance (“Ordinance 121”), requiring the full demolition of SJGS upon its complete and permanent closure. Ordinance 121 required the SJGS owners to submit a proposed demolition and remediation plan no later than three months after SJGS was retired. The SJGS owners submitted the decommissioning and remediation plan on December 28, 2022. In connection with restructuring of the SJGS ownership on December 31, 2017, PNM and the other SJGS owners entered into the San Juan Decommissioning and Trust Funds Agreement, which requires PNM to fund its ownership share of final decommissioning costs into an irrevocable trust. Under the agreement, PNM made an initial funding of $14.7 million in December 2022. The amount and timing of additional trust funding is subject to revised decommissioning cost studies and agreement among the SJGS owners. PNM has posted a surety bond in the amount of $46.0 million in connection with certain environmental decommissioning obligations and must maintain the bond or other financial assurance until those obligations are satisfied. The surety bond only represents a liability if PNM fails to deliver on its contractual liability. For information regarding the impact of Ordinance 121 on PNM’s SJGS decommissioning ARO see Note 15 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

PNM records its share of the SJGS decommissioning obligation as an ARO on its Condensed Consolidated Balance Sheets. Studies on the decommissioning costs of SJGS are performed periodically and revisions to the ARO liability are recorded. In the third quarter of 2022, a new decommissioning cost study was completed, which required PNM to remeasure its SJGS decommissioning ARO. The new study resulted in an estimated decrease to PNM’s share of the decommissioning obligation of $21.1 million, which was recorded in September 2022. Additional information concerning the Company’s SJGS decommissioning ARO is contained in Note 15 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

PVNGS Liability and Insurance Matters

Public liability for incidents at nuclear power plants is governed by the Price-Anderson Nuclear Industries Indemnity Act, which limits the liability of nuclear reactor owners to the amount of insurance available from both commercial sources and an industry-wide retrospective payment plan. The insurance limit is subject to an adjustment every five years based upon the aggregate percentage change in the Consumer Price Index. The most recent adjustment took effect on October 5, 2023. As of that date, in accordance with this act, the PVNGS participants are insured against public liability exposure for a nuclear incident up to $16.5 billion per occurrence. PVNGS maintains the maximum available nuclear liability insurance in the amount of $450 million, which is provided by American Nuclear Insurers. The remaining $16.1 billion is provided through a mandatory industry-wide retrospective assessment program. If losses at any nuclear power plant covered by the program exceed the accumulated funds, PNM could be assessed retrospective premium adjustments. Based on PNM’s current interest in each of the three PVNGS units, PNM’s maximum potential retrospective premium assessment per incident for all three units is $37.7 million, with a maximum annual payment limitation of $5.6 million, to be adjusted periodically for inflation.

The PVNGS participants maintain insurance for damage to, and decontamination of, property at PVNGS in the aggregate amount of $2.8 billion, a substantial portion of which must first be applied to stabilization and decontamination. These coverages are provided by Nuclear Electric Insurance Limited (“NEIL”). The primary policy offered by NEIL contains a sublimit of $2.25 billion for non-nuclear property damage. If NEIL’s losses in any policy year exceed accumulated funds, PNM is subject to retrospective premium adjustments of $5.1 million. The insurance coverages discussed in this and the previous paragraph are subject to certain policy conditions, sublimits, and exclusions.

(12)   Regulatory and Rate Matters

The Company is involved in various regulatory matters, some of which contain contingencies that are subject to the same uncertainties as those described in Note 11. Additional information concerning regulatory and rate matters is contained in Note 17 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

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(Unaudited)

PNMR

Merger Regulatory Proceedings

On October 20, 2020, PNMR, Avangrid, and Merger Sub entered into the Merger Agreement pursuant to which Merger Sub will merge with and into PNMR, with PNMR surviving the Merger as a wholly-owned subsidiary of Avangrid. Among other conditions, consummation of the Merger is subject to receipt of all required regulatory approvals. In 2021, five federal agencies and the PUCT completed their reviews and approved the Merger, with the NMPRC as the only regulatory agency yet to approve the Merger. The original application before the NMPRC was filed in November 2020. For additional information on the Merger regulatory proceedings, including supplemental regulatory filings that were required due to the Merger Agreement being amended in January 2022, April 2023, and June 2023, see Note 18.

PNM

New Mexico General Rate Case

2024 Rate Change

On December 5, 2022, PNM filed an application with the NMPRC for a general increase in retail electric rates. The requested change primarily reflects investments in transmission and distribution infrastructure, largely offset by cost reductions resulting from PNM’s transition to lower-cost, clean generation resources. Key aspects of PNM’s request are:

•Recovery on total rate base of $2.7 billion, based on a calendar year 2024 FTY.

•An increase of $63.8 million in retail non-fuel revenues

•ROE of 10.25%

•Rate adjustments to resolve revenue deficiencies, including:

◦Needed investments in transmission, distribution, and generation facilities for six years of operations, covering 2019 through 2024. In particular, PNM is focused on expanding and improving its aging infrastructure to provide the underlying infrastructure crucial to a successful energy transition and to support distribution generation.

◦Cost reductions from closing SJGS and the expiration of 114 MW leased PVNGS capacity.

◦Lower-cost replacements for SJGS and PVNGS using renewable energy purchases and battery storage systems. Some of these costs will be reflected in PNM’s requested base rates, while energy purchases will flow through PNM’s FPPAC.

◦Updated depreciation rates, including new terminal dates, for natural gas plants to align with the Company’s 2040 carbon-free portfolio goal.

◦Proposed customer-oriented services, such as fee-free payment options, and increased payment location options to address the needs of customers.

◦Increasing operating costs reflecting six years of inflation, including the impacts of today’s current high inflation and the expenses that come with providing quality electric service to customers. Distribution maintenance increases also are necessary to enhance vegetation management programs to protect lines and support wildfire mitigation efforts. PNM has endeavored to keep operating costs below inflationary levels.

◦Increased energy sales and customer loads since PNM’s last filing help cover the increased cost of doing business as PNM continues the energy transition.

◦Overall cost of capital based on PNM’s actual regulatory capital structure of 52% equity / 48% debt, reflecting the increase in the ROE that shareholders require to fund new investments in PNM’s system, which is partially offset by lower cost of debt.

•Proposed ratemaking treatment of PVNGS Leased Interest and testimony supporting the prudence of PNM’s decisions to renew the five leases and repurchase 64.1 MW of PVNGS Unit 2 capacity regarding PVNGS; see PVNGS Lease Abandonment Application below.

•Proposed return of the unamortized unprotected portion of excess deferred federal income taxes to customers over a five-year period, beginning when rates from the case go into effect.

•Time-of-Day pilot proposal with the objective of incentivizing customers, through price signals, to use energy during the day when renewable generation is abundant.

The NMPRC has suspended PNM’s advice notice in the case for the statutory suspension period, until January 4, 2024 and the hearing examiners set a procedural schedule with a hearing held from September 5, 2023 through September 22, 2023.

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(Unaudited)

Briefings were filed October 18, 2023 and response briefs are due October 31, 2023. PNM is unable to predict the outcome of this matter.

On January 3, 2023, a joint motion and brief for accounting order was filed with the NMPRC. NM AREA, NMPRC Staff, WRA, Bernalillo County, NEE, and CCAE (the “Joint Movants”) jointly filed the motion which asked that the NMPRC issue an accounting order for the purpose of requiring PNM to create a regulatory liability to track the costs associated with the retirement of SJGS which are currently embedded in base rates. The Joint Movants requested that the NMPRC order PNM to track all costs associated with the running and management of SJGS totaling $98.3 million annually and requested that the accounting order require PNM to create a regulatory liability to track the SJGS costs from the time Unit 1 and Unit 4 were abandoned, July 1, 2022, and October 1, 2022, respectively, until the date new rates are put into effect, and for any other relief the NMPRC deems is just and reasonable. On February 3, 2023, the hearing examiners issued an order requiring PNM to create a pure accounting order regulatory liability that tracks cost of SJGS which are currently embedded in base rates. On February 6, 2023, PNM filed a motion to permit interlocutory appeal of the hearing examiners order requiring PNM to create a pure accounting order regulatory liability. On February 10, 2023, the hearing examiners issued an order denying PNM’s interlocutory appeal and clarified that the accounting order only required PNM to track the costs of SJGS. On February 14, 2023, NM AREA, NMPRC Staff, WRA, ABCWUA, and CCAE filed a joint motion for clarification of the hearing examiners accounting order. On September 21, 2023, the NMPRC approved a unanimous settlement agreement reached by PNM and other parties resolving steps involved in the retirement of SJGS under the ETA. Under the terms of the settlement, the parties agree to remove SJGS ratemaking and prudence issues from the 2024 Rate Change. For further discussion on the retirement of SJGS and the NMPRC approved unanimous settlement including the associated accounting impacts see SJGS Abandonment Application discussion below.

Renewable Energy Portfolio Standard

As discussed in Note 11, the ETA amends the REA including removal of diversity requirements and certain customer caps and exemptions relating to the application of the RPS under the REA. The REA provides for streamlined proceedings for approval of utilities’ renewable energy procurement plans, assures that utilities recover costs incurred consistent with approved procurement plans, and requires the NMPRC to establish a Reasonable Cost Threshold (“RCT”) for the procurement of renewable resources to prevent excessive costs being added to rates. The ETA sets a RCT of $60 per MWh, adjusted for inflation, using an average annual levelized resource cost basis. PNM makes renewable procurements consistent with the NMPRC approved plans and recovers certain renewable procurement costs from customers through the renewable energy rider billed on a KWh basis.

Included in PNM’s approved procurement plans are the following renewable energy resources:

•158 MW of PNM-owned solar-PV facilities

•A PPA through 2044 for the output of New Mexico Wind, having a current aggregate capacity of 200 MW, and a PPA through 2035 for the output of Red Mesa Wind, having an aggregate capacity of 102 MW

•A PPA through 2040 for 140 MW of output from La Joya Wind II

•A PPA through 2042 for the output of the Lightning Dock Geothermal facility with a current capacity of 11 MW

•Solar distributed generation, aggregating 273.9 MW at September 30, 2023, owned by customers or third parties from whom PNM purchases any net excess output and RECs

The NMPRC has authorized PNM to recover certain renewable procurement costs through a rate rider billed on a per KWh basis. In its 2023 renewable energy procurement plan, which became effective on January 1, 2023, PNM proposed to collect $61.0 million for the year. PNM recorded revenues from the rider of $13.0 million and $47.0 million in the three and nine months ended September 30, 2023 and $12.7 million and $44.5 million in the three and nine months ended September 30, 2022. On June 1, 2023, PNM filed its renewable energy procurement plan for 2024 which proposes to collect $59.0 million for the year. PNM is not proposing any new resource procurements, and the plan states that existing projects are anticipated to exceed the applicable RPS standards of 2024. On June 30, 2023, the hearing examiners issued a procedural order in this proceeding with a hearing held on September 1, 2023. On October 19, 2023, the hearing examiners issued a recommended decision recommending approval of all PNM’s requests.

Under the renewable rider, if PNM’s earned rate of return on jurisdictional equity in a calendar year, adjusted for items not representative of normal operations, exceeds the NMPRC-approved rate by 0.5%, PNM is required to refund the excess to customers during May through December of the following year. On March 31, 2023, PNM filed an affidavit that provides documentation that PNM’s ROE for 2022 was 10.173%, exceeding a 10.075% return (9.575% allowed ROE plus 0.5%). PNM began refunding the excess to customers effective May 1, 2023.

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TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Energy Efficiency and Load Management

Program Costs and Incentives/Disincentives

The New Mexico Efficient Use of Energy Act (“EUEA”) requires public utilities to achieve specified levels of energy savings and to obtain NMPRC approval to implement energy efficiency and load management programs. The EUEA requires the NMPRC to remove utility disincentives to implementing energy efficiency and load management programs and to provide incentives for such programs. The NMPRC has adopted a rule to implement this act. PNM’s costs to implement approved programs and incentives are recovered through a rate rider. During the 2019 New Mexico legislative session, the EUEA was amended to, among other things, include a decoupling mechanism for disincentives, preclude a reduction to a utility’s ROE based on approval of disincentive or incentive mechanisms, establish energy savings targets for the period 2021 through 2025, and require that annual program funding be 3% to 5% of an electric utility’s annual customer bills excluding gross receipt taxes, franchise and right-of-way access fees, provided that a customer’s annual cost does not exceed seventy-five thousand dollars.

On April 15, 2020, PNM filed an application for energy efficiency and load management programs to be offered in 2021, 2022, and 2023. The proposed program portfolio consists of twelve programs with a total annual budget of $31.4 million in 2021, $31.0 million in 2022, and $29.6 million in 2023. The application also sought approval of an annual base incentive of 7.1% of the portfolio budget if PNM were to achieve energy savings of at least 80 GWh in a year. The proposed incentive would increase if PNM is able to achieve savings greater than 94 GWh in a year. On October 28, 2020, the NMPRC issued an order approving PNM’s proposed efficiency and load management program.

On April 17, 2023, PNM filed an application for energy efficiency and load management programs to be offered in 2024, 2025, and 2026 (the “2024 Plan”). The 2024 Plan proposes to continue ten existing energy efficiency programs with modification and a total annual budget of $34.5 million in 2024, $35.4 million in 2025, and $36.5 million in 2026. The application also sought approval of an annual base incentive of 7.1% of the portfolio budget and a sliding scale that provides additional incentive for additional energy saved as a percentage of program cost, up to the maximum allowed by the energy efficiency rule which for PNM is 8.82%. On April 26, 2023, the NMPRC appointed a hearing examiner. On May 19, 2023, the hearing examiner issued an order setting out a procedural schedule with a hearing held on October 18, 2023. PNM is unable to predict the outcome of this matter.

2020 Decoupling Petition

As discussed above, the legislature amended the EUEA to, among other things, include a decoupling mechanism for disincentives. On May 28, 2020, PNM filed a petition for approval of a rate adjustment mechanism that would decouple the rates of its residential and small power rate classes. Decoupling is a rate design principle that severs the link between the recovery of fixed costs of the utility through volumetric charges. On July 13, 2020, NEE, ABCWUA, the City of Albuquerque, and Bernalillo County filed motions to dismiss the petition on the grounds that approving PNM’s proposed rate adjustment mechanism outside of a general rate case would result in retroactive ratemaking and piecemeal ratemaking. The motions to dismiss also alleged that PNM’s proposed rate adjustment mechanism is inconsistent with the EUEA. On October 2, 2020, PNM requested an order to vacate the public hearing, scheduled to begin October 13, 2020, and staying the proceeding until the NMPRC decides whether to entertain a petition to issue a declaratory order resolving the issues raised in the motions to dismiss. On October 7, 2020, the hearing examiner approved PNM’s request to stay the proceeding and vacate the public hearing and required PNM to file a petition for declaratory order by October 30, 2020. On October 30, 2020, PNM filed a petition for declaratory order asking the NMPRC to issue an order finding that full revenue decoupling is authorized by the EUEA. On November 4, 2020, ABCWUA and Bernalillo County jointly filed a competing petition asking the NMPRC to issue a declaratory order on the EUEA’s requirements related to disincentives. On March 17, 2021, the NMPRC issued an order granting the petitions for declaratory order, commencing a declaratory order proceeding to address the petitions and appointing a hearing examiner to preside over the declaratory order proceeding.

On January 14, 2022, the hearing examiner issued a recommended decision recommending the NMPRC find that the EUEA does not mandate the NMPRC to authorize or approve a full decoupling mechanism, defining full decoupling as limited to energy efficiency and load management measures and programs. The recommended decision also states that a utility may request approval of a rate adjustment mechanism to remove regulatory disincentives to energy efficiency and load management measures and programs through a stand-alone petition, as part of the utility’s triennial energy efficiency application or a general rate case and that PNM is not otherwise precluded from petitioning for a rate adjustment mechanism prior to its next general rate case. Finally, the recommended decision stated that the EUEA does not permit the NMPRC to reduce a utility’s ROE based on approval of a disincentive removal mechanism founded on removing regulatory disincentives to energy efficiency and

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

load management measures and programs. The recommended decision does not specifically prohibit a downward adjustment to a utility’s capital structure, based on approval of a disincentive removal mechanism. On April 27, 2022, the NMPRC issued an order adopting the recommended decision in its entirety. On May 24, 2022, PNM filed a notice of appeal with the NM Supreme Court. The NM Supreme Court has scheduled oral arguments to be held on November 13, 2023. PNM cannot predict the outcome of this matter.

FPPAC Continuation Application

NMPRC rules require public utilities to file an application to continue using their FPPAC every four years. On June 17, 2022, PNM filed the required continuation application and requested that its FPPAC be continued without modification. On January 27, 2023, the hearing examiner issued a recommended decision recommending that the FPPAC Continuation Application be consolidated into the 2024 Rate Change and on March 1, 2023, the NMPRC issued an order adopting the hearing examiner’s recommended decision. The FPPAC Continuation Application is now consolidated into the 2024 Rate Change and the procedural schedule for this matter was vacated.

Integrated Resource Plans

NMPRC rules require that investor-owned utilities file an IRP every three years. The IRP is required to cover a 20-year planning period and contain an action plan covering the first four years of that period. On September 14, 2022, the NMPRC adopted revisions to the IRP Rule. The new rule revamps and modernizes the planning process to accommodate increased stakeholder involvement. The IRP Rule establishes a collaborative facilitated process for a utility and stakeholders to agree on a statement of need for potential new or additional resources, as well as an action plan to guide procurement or development of resources to meet the stated need. A most-cost-effective portfolio of resources shall be derived from the statement of need analysis. The statement of need and action plan must be accepted before the utility begins the resource solicitation process pursuant to the IRP Rule. Following acceptance of the statement of need and action plan, a utility will provide the NMPRC and intervenors drafts of the request for proposals (“RFP”) and a timeline for issuing, receiving, evaluating, and ranking bids. The NMPRC will then appoint an Independent Monitor (“IM”) to oversee the RFP process, which allows for parties and the IM to comment on the RFP consistency with the IRP, after which the utility issues the RFP. Within 75 days of receiving bids the utility shall provide the IM with results including pricing and non-price evaluation criteria, ranking of bids, chosen portfolio and alternatives that also meet the needs; the IM then rules on the fairness of the RFP execution. Acceptance of the statement of need and action plan will not constitute a finding of prudency or pre-approval of costs associated with the additional resources. Following the RFP and IM processes, the utility may apply approvals, and any costs incurred to implement the action plan will be considered in a general rate case and/or resource acquisition proceeding. On October 14, 2022, PNM and other investor-owned utilities filed motions for rehearing with the NMPRC. On October 26, 2022, the NMPRC issued an order partially granting and partially denying certain aspects of PNM’s and the other investor-owned utilities’ motions for rehearing. On November 2, 2022, the NMPRC adopted an amended IRP Rule. On December 2, 2022, PNM filed an appeal with the NM Supreme Court. Two other investor-owned utilities also separately filed appeals at the NM Supreme Court. On January 3, 2023, PNM and the two other investor-owned utilities filed statements of issues with the NM Supreme Court. Among other things, the investor-owned utilities question whether the IRP Rule exceeds the NMPRC authority by imposing unauthorized requirements on utilities and extending NMPRC jurisdictional through over-broad interpretation of the statutes and state that the IRP Rule is contrary to law in its provisions for NMPRC regulation of a utility’s resource procurement decision-making. On June 5, 2023, PNM and the other two investor-owned utilities filed their Joint Brief in Chief and request for oral arguments at the NM Supreme Court. PNM cannot predict the outcome of this matter.

2023 IRP

On March 1, 2023, the NMPRC issued an order granting PNM’s Motion for Extension of time to file its 2023 IRP until December 15, 2023, and the deadline for commencing the facilitated stakeholder process, which commenced on June 15, 2023.

Abandonment Applications made under the ETA

As discussed in Note 11, the ETA provides for a transition from fossil-fueled generating resources to renewable and carbon-free resources by allowing utilities to issue energy transition bonds related to the retirement of certain coal-fired generating facilities, to qualified investors.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

SJGS Abandonment Application

In 2019, PNM filed a Consolidated Application for the Abandonment and Replacement of SJGS and Related Securitized Financing Pursuant to the ETA (the “SJGS Abandonment Application”). The SJGS Abandonment Application sought NMPRC approval to retire PNM’s share of SJGS after the coal supply and participation agreements end in 2022, for approval of replacement resources, and for the issuance of approximately $361 million of energy transition bonds (the “Securitized Bonds”). PNM’s request for the issuance of Securitized Bonds included approximately $283 million of forecasted undepreciated investments in SJGS at June 30, 2022, an estimated $28.6 million for plant decommissioning and coal mine reclamation costs, approximately $9.6 million in upfront financing costs, and approximately $20.0 million for job training and severance costs for affected employees. Proceeds from the Securitized Bonds would also be used to fund approximately $19.8 million for economic development in the Four Corners area. The NMPRC issued an order requiring the SJGS Abandonment Application be considered in two proceedings: one addressing SJGS abandonment and related financing, and the other addressing replacement resources.

In 2020, the NMPRC approved PNM’s proposed abandonment of SJGS, subject to approval of replacement resources, and approved PNM’s proposed financing order to issue Securitized Bonds up to $361 million and establish a rate rider to collect non-bypassable customer charges for repayment of the bonds, subject to bi-annual adjustments (the “Energy Transition Charge”).  The NMPRC authorized an interim rate rider adjustment upon the start date of the Energy Transition Charge to provide immediate credits to customers for the full value of PNM’s revenue requirement related to SJGS until those reductions are reflected in base rates. The NMPRC also granted PNM authority to establish regulatory assets to recover costs that PNM will pay prior to the issuance of the Securitized Bonds, including costs associated with the bond issuances as well as for severances, job training, economic development, and workforce training. In addition, the NMPRC authorized PNM to record regulatory assets for certain other abandonment costs that are not specifically addressed under the provisions of the ETA to preserve its ability to recover the costs in a future general rate case, but the authority only extends to the deferral of the costs and is not approval of any ratemaking treatment. Later that year, the NMPRC issued an order approving replacement resource selection criteria identified in the ETA.

On February 28, 2022, WRA and CCAE filed a joint motion for order to show cause and enforce financing order and supporting brief, which requested that the NMPRC order PNM to show cause why its rates should not be reduced at the time SJGS was abandoned. The NMPRC issued an order appointing hearing examiners to conduct a hearing and to issue a recommended decision to address the issues raised by the motion.

On June 17, 2022, the hearing examiners issued a recommended decision requesting the NMPRC issue an order that would require PNM to:

•Revise its rates to remove all of the costs of SJGS Unit 1 by issuing rate credits of $21.1 million on an annual basis, to customers by July 1, 2022

•Revise its rates again, to remove all costs of SJGS Unit 1, Unit 4, and common facilities by increasing the rate credits to $98.3 million on an annual basis, by October 1, 2022

•Transfer payments due and owing to the Indian Affairs Fund, Economic Development Assistance Fund, and the Displaced Workers Assistance Fund within 30 days of the abandonment of SJGS Unit 1

•Include (in its next rate case application) an explanation and defense of the prudence in the timing of the issuance of Securitized Bonds beyond the abandonment dates and what actions were taken to protect customers from interest rate increases occurring as well as the continued marketability of the Securitized Bonds issued

On June 29, 2022, the NMPRC issued its final order adopting and approving the recommended decision in its entirety with certain additions. The additions to the final order include requirements for PNM file a report, no later than October 15, 2022, that contains a record of all its costs incurred in the show cause proceeding so that the prudence of those costs will be known and be subject to review in PNM’s future rate case and that the prudency review shall include a compliance filing to enable a review of the prudence of PNM’s decision to delay bond issuance beyond the dates of the SJGS abandonment. On June 29, 2022, PNM filed an Emergency Motion and Supporting Brief for Stay with the NMPRC, which was denied. On June 30, 2022, PNM filed a Notice of Appeal and an Emergency Motion for Partial Interim Stay of the NMPRC’s Final Order with the NM Supreme Court. Subsequently, on July 25, 2022, PNM filed another emergency motion seeking an immediate and ongoing stay from the NM Supreme Court for the pendency of the appeal. In the interim, PNM began issuing rate credits effective July 31, 2022, and PNM made payments totaling $19.8 million to the Indian Affairs Fund, Economic Development Assistance Fund, and the Displaced Workers Assistance Fund. On September 2, 2022, the NM Supreme Court issued an order granting PNM’s July 25, 2022 motion for partial stay and as a result PNM suspended issuing rate credits. On October 14, 2022,

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PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

PNM made its required compliance filing under the NMPRC’s June 29, 2022 final order. On November 1, 2022, the NM Supreme Court issued an order continuing the partial stay of the rate credits during the pendency of the appeal. On November 15, 2022, PNM filed a supplemental compliance filing to its October 14, 2022 compliance filing. On May 22, 2023, PNM filed its Brief in Chief with the NM Supreme Court requesting the final order be vacated, and remanded back to the NMPRC, to properly apply the ETA and financing order to issue Securitized Bonds.

On August 18, 2023, PNM, along with the intervening parties in the pending appeal of the matter addressing customer bill credits and resolution of the remaining steps involved in the SJGS retirement under the ETA, filed an Unopposed Joint Motion for Abeyance and Remand to Implement Settlement and Request for Expedited Order at the NM Supreme Court. In the motion, the parties asked the NM Supreme Court to hold the appeal in abeyance and remand the matter to the NMPRC to allow the NMPRC to consider and take formal action on a unanimous proposed settlement on remand. Under the terms of the unanimous settlement, PNM would provide $115.0 million in rate credits to customers over a one-year period, resolving all disputes raised in the matter addressing customer bill credits involved in the SJGS retirement before the NMPRC, including removal of SJGS ratemaking and prudence issues in the 2024 Rate Change. Regarding the 2024 Rate Change, PNM agreed to withdraw its request for regulatory assets associated with prefunding of ETA state administered funds and legal costs associated with this matter. In addition, customers will be protected from rising interest rates if the weighted-average rate on the Securitized Bonds exceeds 5.5%. On September 14, 2023, the NM Supreme Court issued an order granting the unopposed motion and remanded the matter to the NMPRC. On September 21, 2023, the NMPRC approved the unanimous settlement agreement. PNM began issuing rate credits on customer bills on October 21, 2023.

As a result of the NMPRC’s September 21, 2023 order approving the unanimous settlement, PNM recorded a $115.0 million reduction to electric operating revenues on PNMR’s and PNM’s Statement of Earnings, for amounts previously recorded under PNM’s current retail rates and a corresponding current regulatory liability on PNMR’s and PNM’s Balance Sheets at September 30, 2023. In addition, PNM recorded a regulatory disallowance of $2.3 million on PNMR’s and PNM’s Statement of Earnings and a corresponding decrease to deferred regulatory assets on PNMR’s and PNM’s Balance Sheets at September 30, 2023 to reflect PNM’s agreement to withdraw its request for regulatory assets associated with prefunding of ETA state administered funds and legal costs associated with this matter.

Additional information concerning the SJGS Abandonment Application is contained in Note 17 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

Four Corners Abandonment Application

On November 1, 2020, PNM entered into the Four Corners Purchase and Sale Agreement with NTEC, pursuant to which PNM agreed to sell its 13% ownership interest (other than certain transmission assets) in Four Corners to NTEC. The sale is contingent upon NMPRC approval. In connection with the sale, PNM would make payments of $75.0 million to NTEC for relief from its obligations under the coal supply agreement for Four Corners after December 31, 2024. Pursuant to the Four Corners Purchase and Sale Agreement, PNM would retain its current plant decommissioning and coal mine reclamation obligations. PNM made an initial payment to NTEC of $15.0 million in November 2020, subject to refund with interest upon termination of the Four Corners Purchase and Sale Agreement prior to closing. Under the terms of the Four Corners Purchase and Sale Agreement, upon receipt of the NMPRC approval, PNM is expected to make a final payment of $60.0 million.

On January 8, 2021, PNM filed the Four Corners Abandonment Application, which sought NMPRC approval to exit PNM’s share of Four Corners as of December 31, 2024, and issuance of approximately $300 million of Securitized Bonds as provided by the ETA. PNM’s request for the issuance of Securitized Bonds included approximately $272 million of forecasted undepreciated investments in Four Corners at December 31, 2024, an estimated $4.6 million for plant decommissioning costs, an estimated $7.3 million in upfront financing costs, and an estimated $16.5 million for economic development in the Four Corners area.

On March 15, 2021, PNM filed an amended application and supplemental testimony for the approval of the abandonment and transfer of Four Corners and issuance of a financing order pursuant to the ETA and a motion to withdraw the January 8, 2021 Four Corners Application. The amended application and supplemental testimony provided additional information to support PNM’s request to abandon its interest in Four Corners and transfer that interest to NTEC, and also provided additional detail explaining how the proposed sale and abandonment provides a net public benefit.

On November 12, 2021, the hearing examiner issued a recommended decision recommending approval of the Four Corners Abandonment Application and the corresponding request for issuance of securitized financing. On December 15,

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

2021, the NMPRC issued a final order rejecting the hearing examiner’s recommended decision and denying approval of the Four Corners Abandonment Application and the corresponding request for issuance of securitized financing. In its order, the NMPRC concluded that PNM needed to conduct a review of the actual replacement resource portfolio and determined that the record was insufficient to determine the prudence of PNM’s investments in Four Corners. On December 22, 2021, PNM filed a Notice of Appeal with the NM Supreme Court of the NMPRC decision to deny the application. On January 21, 2022, PNM filed its Statement of Issues outlining the arguments for appeal asserting, among other things, that the NMPRC misinterpreted and improperly applied the ETA in concluding that the NMPRC needed to review the actual replacement resource portfolio before authorizing abandonment and that the NMPRC improperly deferred the issue of prudence with respect to certain of PNM’s investments in Four Corners, where other parties were given the opportunity to present evidence and failed to demonstrate PNM was imprudent in its decisions. On March 28, 2023, the NM Supreme Court heard oral arguments on the appeal. On July 6, 2023, the NM Supreme Court issued a decision concluding that the NMPRC reasonably and lawfully denied PNM’s application for abandonment, determining that PNM did not meet its burden in challenging the NMPRC’s final order. The Company is evaluating the facts and circumstances surrounding the potential early exit of Four Corners and will determine next steps.

GAAP requires a loss be recognized when it is probable that a loss has been incurred and the amount of loss can be reasonably estimated. As of September 30, 2023, PNM evaluated the NMPRC order in the Four Corners Abandonment Application and the NM Supreme Court’s decision and determined it was reasonably possible that PNM would be successful in recovery of its undepreciated investment in future rate proceedings. In the nine months ended September 30, 2023, PNM recorded a regulatory disallowance of $3.7 million for costs associated with obtaining an abandonment order, which are no longer expected to be recovered as a result of the NM Supreme Court’s decision to uphold the NMPRC’s decision to deny PNM’s Four Corners Abandonment Application.

The financial impact of an early exit of Four Corners and the NMPRC approval process is influenced by many factors outside of PNM’s control, including the overall political and economic conditions of New Mexico. See additional discussion of the ETA in Note 11. PNM cannot predict the outcome of these matters.

PVNGS Leased Interest Abandonment Application

On April 2, 2021, PNM filed the PVNGS Leased Interest Abandonment Application, an application for the sale and transfer of related assets, and approval to procure new resources. As discussed in Note 13, PNM had Leased Interest under five separate leases that were approved and certificated by the predecessor agency to the NMPRC in the 1980s. Four of the five leases for 104 MW of Leased Interest terminated in January 2023, while the remaining lease for 10 MW of Leased Interest terminates in January 2024. Associated with the Leased Interest are certain PNM-owned assets and nuclear fuel that are necessary for the ongoing operation and maintenance of the Leased Interest and integration of the Leased Interest generation to the transmission network. PNM determined that there will be net benefits to its customers to return the Leased Interest to the lessors in conformity with the leases, sell and transfer the related PNM-owned assets, and to replace the Leased Interest with new resources. In the application, PNM requested NMPRC authorization to decertify and abandon its Leased Interest and to create regulatory assets for the associated remaining undepreciated investments with consideration of cost recovery of the undepreciated investments in a future rate case. PNM also sought NMPRC approval to sell and transfer the PNM-owned assets and nuclear fuel supply associated with the Leased Interest to SRP, which has and will acquire the Leased Interest from the lessors upon termination of the existing leases.

On April 21, 2021, the NMPRC issued an order assigning a hearing examiner and stated that issues reserved to a separate proceeding in the NM 2015 Rate Case regarding the decision to permanently disallow recovery of certain future decommissioning costs related to PVNGS Units 1 and 2 shall be addressed in this case and PNM shall file testimony addressing the issue. On June 28, 2021, NEE and CCAE jointly filed a motion to dismiss a portion of the application claiming that since PNM’s request to abandon the Leased Interest was filed after PNM had already provided irrevocable notice it would not acquire the Leased Interest, abandonment is no longer required. On July 28, 2021, the hearing examiner issued a recommended decision on NEE’s and CCAE’s joint motion to dismiss, recommending dismissal of PNM’s requests for approval to abandon and decertify the Leased Interest; dismissal of PNM’s request for approval to sell and transfer the related assets; and dismissal of PNM’s request to create regulatory assets for the associated remaining undepreciated investments, but did not preclude PNM seeking recovery of the costs in a general rate case in which the test year period includes the time period in which PNM incurs such costs. The hearing examiner’s recommended decision further provided that PNM’s request for replacement resources and the decision to permanently disallow recovery of certain future decommissioning costs related to PVNGS Units 1 and 2 should remain within the scope of this case.

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TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

On August 25, 2021, the NMPRC issued an order granting portions of the July 28, 2021 recommended decision that were not contested related to dismissal of PNM’s request for approval to abandon and decertify the Leased Interest and dismissal of PNM’s request for approval to sell and transfer the related assets. In addition, the order bifurcated the issue of approval for replacement resources into a separate docket.

The hearing on replacement resources was held on November 12 and 15, 2021 and December 3, 2021. On February 16, 2022, the NMPRC adopted an order approving the replacement resources. In the second quarter of 2022, PNM made compliance filings notifying the NMPRC that none of the developers had moved forward under the terms of the agreements approved by the NMPRC on February 16, 2022, and none of the replacement resource projects would be operational in 2023. PNM ultimately entered into amendments with one developer for 300 MW solar PPA combined with a 300 MW battery storage agreement, which no party opposed and was deemed approved in September 2022. PNM anticipates these facilities will be in service in 2024.

On November 1, 2022, ABCWUA, Bernalillo County, CCAE, NEE, NM AREA, the NMAG, WRA, and NMPRC Staff filed a joint motion for an accounting order to require PNM to track in a regulatory liability, all costs associated with the PVNGS Leased Interests that will be abandoned in January 2023 and January 2024 that are still being collected in rates, which PNM opposed. On November 18, 2022, the NMPRC issued its order on joint motion for an accounting order requiring PNM to establish a regulatory liability to track and account for, upon termination of the PVNGS leases, all costs currently borne by ratepayers associated with those leases during pendency of the 2024 Rate Change, subject to a determination of ratemaking treatment. In addition, PNM may establish a regulatory asset account to record undepreciated investment for improvements to the Unit 1 and Unit 2 Leased Interests upon termination of the leases, and to record cost differences in the proceeds from SRP for the sale of the PVNGS Leased Assets and the actual book value. Recovery of these items will be determined in the 2024 Rate Change. In the 2024 Rate Change, PNM must also address unresolved issues including whether PNM’s decision to renew the five leases and repurchase 64.1 MW of PVNGS Unit 2 capacity exposed ratepayers to additional financial liability beyond that to which they would otherwise have been exposed, and whether PNM should be denied recovery of future decommissioning expenses as a remedy for imprudence. See 2024 Rate Change discussion above.

PNM evaluated the consequences of the NMPRC’s November 18, 2022 accounting order, as required under GAAP, and whether it should establish a regulatory liability in 2023 to account for revenue collected from ratepayers during the pendency of the 2024 Rate Change. In addition, PNM evaluated whether it should establish a regulatory asset account to record undepreciated investment for improvements to the Unit 1 and Unit 2 Leased Interests upon termination of the leases in January 2023 and 2024. Based on these evaluations PNM concluded that the accounting order was not tied to a specific rate order and does not change PNM’s resources or obligations and those decisions will be determined in the 2024 Rate Change. Therefore, no loss or regulatory liability has been recorded as of September 30, 2023. The amount of any such loss to be recorded would depend on the ultimate outcome of the 2024 Rate Change, however based on amounts currently included in base rates, PNM estimates the potential loss as of September 30, 2023 to be $28.8 million. PNM does not consider a disallowance of all or part of the cost of the undepreciated leasehold improvements to be probable and reasonably estimatable at this time, and in 2023 reclassified $88.2 million of undepreciated leasehold improvements, previously reflected in Net utility plant, to a deferred regulatory asset on PNMR’s and PNM’s Condensed Consolidated Balance Sheet at September 30, 2023.

In addition to approval by the NMPRC, PNM and SRP received NRC approval for the transfer of the associated possessory licenses at the end of the term of each of the respective leases.

Summer Peak Resource Adequacy

Throughout 2021, 2022 and continuing into 2023, PNM provided notices of delays and status updates to the NMPRC for the approved SJGS replacement resource projects as well as delays in replacement resources for the PVNGS leased capacity that expired in January 2023. On January 30, 2023, PNM informed the NMPRC that it had provided written notice to one of the SJGS replacement resource developers for 100 MW solar PPA and a 30 MW battery storage agreement of an event of seller default and of early termination and as a result the project would not proceed. In the second half of 2022 and the first quarter of 2023, PNM entered into agreements totaling 420 MW of firm power purchases for the summer peak in 2023 and the purchase of 40 MW of firm capacity at PVNGS for all twelve months of 2023, providing PNM with a projected system reserve margin necessary to meet customer demand. While PNM experienced a new system peak retail load of 2,139 MW on July 19, 2022, and in 2023 experienced a new system peak retail load of 2,162 MW on July 18, 2023, PNM’s generation resources performed sufficiently with no challenges to resource adequacy during the 2022 and 2023 summer peak seasons. PNM anticipates that a majority of the SJGS and PVNGS leased capacity replacement resources will be available prior to the 2024 summer peak

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PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

season and may also secure additional firm energy market purchases necessary to meet customer load during the 2024 summer season. PNM is unable to predict the outcome of this matter.

2026 Resource Application

On October 25, 2023, PNM filed an application with the NMPRC seeking approval of resources to be available for the 2026 summer peak. The application includes approval of a 100 MW solar PPA and three battery storage agreements of 100 MW, 100 MW, and 50 MW. In addition, PNM is seeking approval of a CCN for a 60 MW battery storage system to be owned by PNM. The resources are necessary for PNM to safely and reliably meet its projected system load.

Grid Modernization Application

On October 3, 2022, in compliance with New Mexico Grid Modernization Statute, PNM filed its Grid Modernization Application with the NMPRC. The projects included in the Grid Modernization Application improve customers’ ability to customize their use of energy and ensure that customers, including low-income customers, are a top priority and will benefit consistent with the Grid Modernization Statute. PNM’s proposal to modernize its electricity grid through infrastructure and technology improvements also increases the efficiency, reliability, resilience, and security of PNM’s electric system. PNM’s application seeks approval of grid modernization investments of approximately $344 million for the first six years of a broader 11-year strategy. PNM’s application requested NMPRC approval by July 1, 2023 for PNM’s grid modernization plan in addition to approval of PNM’s proposed Grid Modernization Rider by September 1, 2023. The proposed Grid Modernization Rider would recover capital costs, operating expenses, and taxes associated with the investments included in the Grid Modernization Application. PNM also requested authorization to create related regulatory assets and liabilities, permitting PNM to record costs incurred for the development and implementation of PNM’s plan between the requested approval of the application on July 1, 2023, and the implementation of the Grid Modernization Rider by September 1, 2023; undepreciated investments associated with legacy meters being replaced with AMI meters; and over- or under-collection of costs through the Grid Modernization Rider. In addition, PNM requested approval of the proposed format of an Opt-Out Consent Form and methodology to determine PNM’s proposed cost-based opt-out fees, which includes a one-time fee and a monthly fee. A hearing was held on March 20, 2023 through March 24, 2023. Post-hearing briefs were filed April 20, 2023, and response briefs were filed May 10, 2023. On May 31, 2023, the NMPRC issued an order requiring the hearing examiner to direct PNM to file a cost benefit analysis as a supplement to the application. On June 23, 2023, PNM filed its response to the order from the NMPRC, stating it could file the required cost benefit analysis by November 3, 2023. PNM is unable to predict the outcome of this matter.

COVID-19 Regulatory Matters

In 2020, the NMPRC issued an order authorizing all public utilities regulated by the NMPRC to create a regulatory asset to defer incremental costs related to COVID-19, including increases to bad debt expense incurred during the period beginning March 11, 2020 through the termination of the Governor of New Mexico’s emergency executive order. The NMPRC order requires public utilities creating regulatory assets to pursue all federal, state, or other subsidies available, to record a regulatory liability for all offsetting cost savings resulting from the COVID-19 pandemic, and allows PNM to request recovery in future ratemaking proceedings. As a result, PNM has deferred costs related to COVID-19 of $5.7 million in regulatory assets on the Condensed Consolidated Balance Sheet at both September 30, 2023 and December 31, 2022. Although PNM is seeking recovery for the increase in bad debt expense resulting from COVID-19 through a regulatory asset in the 2024 Rate Change, it no longer intends to seek recovery of other incremental costs related to the pandemic. In addition, PNM has cost savings related to COVID-19 of $0.9 million in regulatory liabilities on the Condensed Consolidated Balance Sheets at both September 30, 2023 and December 31, 2022.

The Community Solar Act

In June 2021, the Community Solar Act established a program that allows for the development of community solar facilities and provides customers of a qualifying utility with the option of accessing solar energy produced by a community solar facility in accordance with the Community Solar Act. The NMPRC is charged with administering the Community Solar Act program, establishing a total maximum capacity of 200 MW community solar (applicable until November 2024) facilities and allocating proportionally to the New Mexico electric investor-owned utilities and participating cooperatives. As required under the Community Solar Act, the NMPRC opened a docket on May 12, 2021 to adopt rules to establish a community solar program no later than April 1, 2022. On June 15, 2021, the NMPRC issued an order which required utilities provide a notice to all future applicants and to any likely applicants that, until the effective date of the NMPRC’s rules in this area the NMPRC’s existing interconnection rules and manual remain in place until amended or replaced by the NMPRC, and further, that a place in

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PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

a utility’s applicant queue for interconnection does not and will not provide any advantage for selection as a community solar project. PNM provided the required notices. On October 27, 2021, the NMPRC adopted an order issuing a Notice of Proposed Rulemaking (“NOPR”) starting the formal process for adoption of rules pursuant to the Community Solar Act. On March 30, 2022, the NMPRC issued an order that adopted a rule on the administration of the Community Solar Act program. The rule required utilities to file proposed community solar tariffs with the NMPRC within 60 days from the publication of the rule. A number of motions for rehearing and requests for clarification were filed between April 7 and May 2, 2022. On May 18, 2022, the NMPRC issued an order partially granting motions for rehearing, reconsideration and clarification and staying implementation pending further rulemaking. On June 16, 2022, PNM requested clarification related to the existing interconnection queue, which would not delay implementation of the Community Solar Act program. On July 12, 2022, the NMPRC provided notice of publication of its final rule in the New Mexico Register, starting the 60-day clock for utilities to file their proposed community solar tariffs, forms, and other relevant agreements. On September 14, 2022, PNM filed Community Solar tariffs. On October 12, 2022, the NMPRC issued an order to suspend PNM’s and two other investor-owned utilities tariffs and required the utilities to file information NMPRC Staff has identified as necessary for a complete evaluation of the tariffs but did not appoint a hearing examiner or schedule a public hearing. Another investor-owned utility has filed an appeal with the NM Supreme Court seeking review of the NMPRC’s decisions, to which PNM has intervened.

On November 16, 2022, PNM filed its Community Solar tariff which establishes the Community Solar bill credit to be applied to an eligible retail customer of PNM who is a subscriber to a community solar facility. On December 23, 2022, PNM filed an updated Community Solar tariff under protest and filed a motion for clarification, suspension, and timely hearing on PNM’s Community Solar tariff. On January 18, 2023, the NMPRC suspended PNM’s Community Solar tariff. On March 1, 2023, the NMPRC issued an Order Opening a New Docket for Two-Phase Proceedings. The first phase addressed issues concerning the proposed subscriber organization agreements and the proposed customer data forms. The second phase will address all issues concerning proposed tariffs, agreements and forms that are not addressed in the first phase. On May 31, 2023, the utilities filed a Consolidated Reply Brief to the NMPRC and the Joint Intervenors-Appellee filed Answer Briefs in the NM Supreme Court proceeding. On September 21, 2023, the NMPRC issued an order approving an uncontested stipulation on the first phase. The order directs PNM to file an advice notice conforming to the stipulation with an effective date of October 30, 2023. If NMPRC Staff recommends that the advice notice be allowed to go into effect, then no further order of the NMPRC will be needed and the first phase shall be complete at such time as the advice notice becomes effective. A hearing is scheduled for the second phase to begin on January 17, 2024. PNM cannot predict the outcome of the pending matters.

Battery Energy Storage System Certificate of Public Convenience and Necessity (“CCN”)

On May 3, 2023, PNM filed a CCN application with the NMPRC for two battery energy storage systems, 6 MW each, located on PNM’s distribution system in Valencia and Bernalillo counties. PNM intends to construct, own, and operate these systems that will be interconnected to the distribution system on feeders that currently exceed their existing hosting capacity limits due to the high amount of solar production connected to them. The deployment of battery energy storage systems on these feeders at capacity will bring the power flow on the feeders back within design limits, potentially allowing a number of solar interconnection applications currently on hold to interconnect, which will in turn reduce carbon emissions and the need to curtail solar production in times of oversupply. PNM is requesting approval of the CCN application, with an estimated total cost of $25.8 million, by December 31, 2023 to support the proposed construction schedule and have the battery energy storage systems begin serving customers in June 2024. On May 30, 2023, the hearing examiner issued an order setting out a procedural schedule with a hearing held on October 12, 2023. PNM is unable to predict the outcome of this matter.

Meta Platforms Inc. Data Center

PNM has a special service contract to provide service to Meta, Inc. for a data center in PNM’s service area. Meta’s service requirements include the acquisition by PNM of a sufficient amount of new renewable energy resources and RECs to match the energy and capacity requirements of the data center. The cost of renewable energy procured is passed through to Meta under a rate rider. A special service rate is applied to Meta’s energy consumption in those hours of the month when their consumption exceeds the energy production from the renewable resources. As of September 30, 2023, PNM is procuring energy from 180 MW of solar-PV capacity from NMRD, a 50% equity method investee of PNMR Development. See additional discussion of NMRD in Note 16.

On July 24, 2023, PNM filed an application with the NMPRC for approval to service the data center for an additional 140 MW of solar PPA combined with 50 MW of battery storage expected to be operational in 2025. On August 4, 2023, the hearing examiner issued an order setting out a procedural schedule with a hearing to begin November 7, 2023. PNM is unable to predict the outcome of this matter.

71

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Transportation and Electrification Program (TEP)

On June 1, 2023, PNM filed its 2024-2026 TEP with the NMPRC, requesting approval of a $37.1 million total three-year budget and continuation of the current TEP Rider. Approximately 22% of the budget, $8.0 million, will be dedicated to low-income customers. On July 21, 2023, the hearing examiner issued an order setting out a procedural schedule with a hearing to begin December 13, 2023. PNM is unable to predict the outcome of this matter.

FERC Order 864

In November 2019, FERC issued Order No. 864, which required public utility transmission providers with transmission formula rates to revise those rates to account for changes resulting from the Tax Cuts and Jobs Act of 2017 (the “Tax Act”). PNM had already made revisions to its formula rate to account for Tax Act changes, and, as a result of the Order, PNM proposed additional changes to its formula rate to implement the remaining requirements of the Order. In July 2022, FERC issued an order finding that PNM had predominantly complied with the requirements but set aside certain matters for settlement and hearing procedures. The parties have a settlement agreement in principle and expect to file a settlement letter for the Settlement Judge’s review by November 3, 2023. As a result of adjustments agreed to in settlement discussions, PNM recorded a decrease of $3.1 million to electric operating revenues on PNMR’s and PNM’s Statement of Earnings and a corresponding increase to other current liabilities on PNMR’s and PNM’s Balance Sheets at September 30, 2023. PNM is unable to determine the outcome of this matter.

TNMP

Transmission Cost of Service Rates

TNMP can update its transmission cost of service (“TCOS”) rates twice per year to reflect changes in its invested capital although updates are not allowed while a general rate case is in process. Updated rates reflect the addition and retirement of transmission facilities, including appropriate depreciation, federal income tax and other associated taxes, and the approved rate of return on such facilities. The following sets forth TNMP’s recent interim transmission cost rate increases:

Effective Date	Approved Increase in Rate Base		Annual Increase in Revenue
	(In millions)
September 20, 2021	$	41.2	$	6.3
March 25, 2022	95.6		14.2
September 22, 2022	36.0		5.3
May 12, 2023	150.5		19.4
September 6, 2023	21.4		4.2

Periodic Distribution Rate Adjustment

PUCT rules permit interim rate adjustments to reflect changes in investments in distribution assets. Historically, distribution utilities have been restricted to a single, annual periodic rate adjustment through a distribution cost recovery filing (“DCRF”) submitted between April 1 and April 8 of each year as long as the electric utility was not earning more than its authorized rate of return using weather-normalized data. However, the recent passage of Senate Bill 1015 now permits DCRF proceedings to be filed twice per year with a 60-day administrative deadline that can be extended for 15 days on good cause. Additionally, a DCRF may be filed during a pending rate case proceeding as long as that DCRF request is not filed until the 185th day after the rate case proceeding was initiated. The following sets forth TNMP’s recent interim distribution rate increases:

Effective Date	Approved Increase in Rate Base		Annual Increase in Revenue
	(In millions)
September 1, 2021	$	104.5	$	13.5
September 1, 2022	95.7		6.8
September 1, 2023	157.0		14.5

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PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Energy Efficiency

TNMP recovers the costs of its energy efficiency programs through an energy efficiency cost recovery factor (“EECRF”), which includes projected program costs, under and over collected costs from prior years, rate case expenses, and performance bonuses (if programs exceed mandated savings goals). TNMP’s 2021 EECRF filing requested recovery of $7.2 million, including a performance bonus of $2.3 million, and became effective March 1, 2022. On May 27, 2022, TNMP filed its request to adjust the EECRF to reflect changes in costs for 2023. The total amount requested was $7.4 million, which includes a performance bonus of $1.9 million based on TNMP’s energy efficiency achievements in the 2021 plan year. On August 24, 2022, a unanimous stipulation and settlement was filed with the PUCT to recover $7.3 million in 2023, including the performance bonus of $1.9 million. On October 6, 2022, the PUCT approved the unanimous stipulation. On May 26, 2023, TNMP filed its request to adjust the EECRF to reflect changes in costs for 2024. On September 28, 2023, the PUCT approved a unanimous stipulation, authorizing recovery of $6.6 million, including a performance bonus of $1.2 million based on TNMP’s energy efficiency achievements in the 2022 plan year.

(13)     Lease Commitments

The Company leases office buildings, vehicles, battery storage facilities, and other equipment. In addition, PNM leases interests in PVNGS Unit 2 and certain rights-of-way agreements are classified as leases. All of the Company’s leases with terms in excess of one year are recorded on the balance sheet by recording a present value lease liability and a corresponding right-of-use asset. Operating lease expense is recognized within operating expenses according to the use of the asset on a straight-line basis. Financing lease costs, which are comprised primarily of fleet and office equipment leases commencing after January 1, 2019, are recognized by amortizing the right-of-use asset on a straight-line basis and by recording interest expense on the lease liability. Financing lease right-of-use assets amortization is reflected in depreciation and amortization and interest on financing lease liabilities is reflected as interest charges on the Company’s Condensed Consolidated Statements of Earnings. See additional discussion of the Company’s leasing activities in Note 8 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

PVNGS

In 1985 and 1986, PNM entered into leases for its interest in PVNGS Unit 1 and 2. The leases initially were scheduled to expire in January 2015 for four Unit 1 leases and January 2016 for four Unit 2 leases. Following procedures set forth in the PVNGS leases, PNM notified four of the lessors under the Unit 1 leases and one lessor under the Unit 2 lease that it would elect to renew those leases on the expiration date of the original leases. The four Unit 1 leases expired in January 2023 and the one Unit 2 lease expires in January 2024. The annual lease payments during the renewal periods aggregate $1.6 million on the remaining PVNGS Unit 2 lease.

The terms of each of the extended leases did not provide for additional renewal options beyond their scheduled expiration dates. PNM had the option to purchase the assets underlying each of the extended leases at their fair market value or to return the lease interests to the lessors on the expiration dates. On June 11, 2020, PNM provided notice to the lessors and the NMPRC of its intent to return the assets underlying both the PVNGS Unit 1 and Unit 2 leases upon their expiration in January 2023 and 2024. Although PNM elected to return the assets underlying the extended leases, PNM retains certain obligations related to PVNGS, including costs to decommission the facility. PNM depreciates its capital improvements related to the extended leases using NMPRC approved rates through the end of the NRC license period for each unit, which expire in June 2045 for Unit 1 and in June 2046 for Unit 2. Upon expiration of the leases PNM will cease depreciation and, as authorized by the NMPRC, create a regulatory asset for the associated remaining undepreciated investments.

On April 5, 2021, PNM and SRP entered into an Asset Purchase and Sale Agreement, pursuant to which PNM agreed to sell to SRP certain PNM-owned assets and nuclear fuel necessary to the ongoing operation and maintenance of leased capacity in PVNGS Unit 1 and Unit 2, which SRP has agreed to acquire from the lessors upon termination of the existing leases. The proposed transaction between PNM and SRP received all necessary approvals, including NRC approval for the transfer of the associated possessory licenses to SRP at the end of the term of each of the respective leases. In January 2023, the Unit 1 leases expired, and PNM closed on the associated sale to SRP, receiving payments of $33.7 million, of which $28.4 million was recorded as a reduction to Net utility plant on the Condensed Consolidated Balance Sheets and is presented as cash flows from investing activities on the Condensed Consolidated Statement of Cash Flows. In addition, $5.3 million was recorded as a reduction to Materials, supplies, and fuel stock on the Condensed Consolidated Balance Sheets and is presented as cash flows from operating activities on the Condensed Consolidated Statement of Cash Flows. See Note 12 for information on other PVNGS matters including the PVNGS Leased Interest Abandonment Application which included PNM’s request to create regulatory assets for the associated remaining undepreciated investments.

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PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

PNM is exposed to loss under the PVNGS lease arrangements upon the occurrence of certain events that PNM does not consider reasonably likely to occur. Under certain circumstances (for example, the NRC issuing specified violation orders with respect to PVNGS or the occurrence of specified nuclear events), PNM would be required to make specified payments to the lessors and take title to the leased interests. If such an event had occurred as of September 30, 2023, amounts due to the lessors under the circumstances described above would have been up to $13.5 million, payable on January 15, 2024 in addition to the scheduled lease payments due on that date.

Land Easements and Rights-of-Ways

Many of PNM’s electric transmission and distribution facilities are located on lands that require the grant of rights-of-way from governmental entities, Native American tribes, or private parties. PNM has completed several renewals of rights-of-way, the largest of which is a renewal with the Navajo Nation. PNM is obligated to pay the Navajo Nation annual payments of $6.0 million, subject to adjustment each year based on the Consumer Price Index, through 2029. PNM’s April 2023 payment for the amount due under the Navajo Nation right-of-way lease was $8.3 million, which included amounts due under the Consumer Price Index adjustment. Changes in the Consumer Price Index subsequent to January 1, 2019 are considered variable lease payments.

PNM has other prepaid rights-of-way agreements that are not accounted for as leases or recognized as a component of plant in service. PNM reflects the unamortized balance of these prepayments in other deferred charges on the Condensed Consolidated Balance Sheets and recognizes amortization expense associated with these agreements in the Condensed Consolidated Statement of Earnings over their term. As of September 30, 2023 and December 31, 2022, the unamortized balance of these rights-of-ways was $56.7 million and $54.6 million. PNM recognized amortization expense associated with these agreements of $0.8 million and $2.6 million in the three and nine months ended September 30, 2023 and $0.9 million and $2.9 million in the three and nine months ended September 30, 2022.

Fleet Vehicles and Equipment

Fleet vehicle and equipment leases commencing on or after January 1, 2019 are classified as financing leases. Fleet vehicle and equipment leases existing as of December 31, 2018 are classified as operating leases. The Company’s fleet vehicle and equipment lease agreements include non-lease components for insignificant administrative and other costs that are billed over the life of the agreement. At September 30, 2023, residual value guarantees on fleet vehicle and equipment leases are $0.9 million, $1.0 million, and $1.9 million for PNM, TNMP, and PNMR Consolidated.

Battery Storage Agreements

The Company has entered into various battery storage agreements and, in the third quarter of 2023, two battery storage facilities with an aggregate capacity of 170 MW began commercial operation. The agreements are for 20-year terms and have fixed payments over the life of the agreements. The Company has accounted for the agreements as operating leases and has recorded lease liabilities with corresponding right-of-use assets of $138.7 million. In addition, the Company has elected to separate lease components from non-lease components for battery storage agreements and accordingly, does not include non-lease components in the measurement of the lease liability or right-of-use asset.

Information related to the Company’s operating leases recorded on the Condensed Consolidated Balance Sheets is presented below:

	September 30, 2023						December 31, 2022
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Operating leases:
Operating lease assets, net of amortization	$	183,889	$	2,099	$	185,989	$	52,556	$	3,426	$	55,982
Current portion of operating lease liabilities	10,992		991		11,983		17,239		1,543		18,781
Long-term portion of operating lease liabilities	167,891		959		168,849		39,633		1,703		41,336

74

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

As discussed above, the Company classifies its fleet vehicle and equipment leases and its office equipment leases commencing on or after January 1, 2019 as financing leases. Information related to the Company’s financing leases recorded on the Condensed Consolidated Balance Sheets is presented below:

	September 30, 2023						December 31, 2022
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Financing leases:
Non-utility property	$	25,144	$	22,931	$	48,143	$	19,324	$	20,084	$	39,738
Accumulated depreciation	(10,905)		(10,898)		(21,851)		(7,726)		(8,202)		(16,189)
Non-utility property, net	14,239		12,033		26,292		11,598		11,882		23,549
Other current liabilities	$	4,339	$	4,459	$	8,813	$	3,441	$	3,867	$	7,363
Other deferred credits	9,888		7,593		17,486		8,079		8,028		16,123

Information concerning the weighted average remaining lease terms and the weighted average discount rates used to determine the Company’s lease liabilities as of September 30, 2023 is presented below:

	PNM		TNMP		PNMR Consolidated
Weighted average remaining lease term (years):
Operating leases	17.08		1.84		16.92
Financing leases	3.91		3.08		3.53
Weighted average discount rate:
Operating leases	5.61	%	4.15	%	5.60	%
Financing leases	4.43	%	4.24	%	4.34	%

Information for the components of lease expense is as follows:

	Three Months Ended September 30, 2023						Nine Months Ended September 30, 2023
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Operating lease cost:	$	4,001	$	345	$	4,346	$	10,377	$	1,175	$	11,552
Amounts capitalized	(71)		(302)		(373)		(334)		(1,031)		(1,365)
Total operating lease expense	3,930		43		3,973		10,043		144		10,187
Financing lease cost:
Amortization of right-of-use assets	1,193		1,183		2,389		3,325		3,345		6,718
Interest on lease liabilities	148		126		274		411		349		760
Amounts capitalized	(844)		(1,071)		(1,915)		(2,313)		(3,076)		(5,389)
Total financing lease expense	497		238		748		1,423		618		2,089
Variable lease expense	360		—		360		982		—		982
Short-term lease expense	174		7		190		438		22		490
Total lease expense for the period	$	4,961	$	288	$	5,271	$	12,886	$	784	$	13,748

75

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

	Three Months Ended September 30, 2022						Nine Months Ended September 30, 2022
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Operating lease cost:	$	6,736	$	466	$	7,205	$	20,085	$	1,489	$	21,623
Amounts capitalized	(166)		(410)		(577)		(524)		(1,336)		(1,860)
Total operating lease expense	6,570		56		6,628		19,561		153		19,763
Financing lease cost:
Amortization of right-of-use assets	792		779		1,585		2,293		2,334		4,680
Interest on lease liabilities	84		85		170		231		238		471
Amounts capitalized	(588)		(829)		(1,417)		(1,648)		(2,309)		(3,957)
Total financing lease expense	288		35		338		876		263		1,194
Variable lease expense	262		—		262		629		—		629
Short-term lease expense (1)	568		1		567		2,837		4		2,884
Total lease expense for the period	$	7,688	$	92	$	7,795	$	23,903	$	420	$	24,470

(1) Includes expense of $0.4 million and $2.7 million for the three and nine months ended September 30, 2022 for rental of temporary cooling towers associated with the SJGS Unit 1 outage. These amounts are offset with insurance reimbursements of $0.4 million and $2.7 million for the three and nine months ended September 30, 2022.

Supplemental cash flow information related to the Company’s leases is as follows:

	Nine Months Ended						Nine Months Ended
	September 30, 2023						September 30, 2022
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	18,714	$	113	$	18,827	$	25,503	$	118	$	25,670
Operating cash flows from financing leases	135		47		183		67		32		101
Finance cash flows from financing leases	1,221		565		1,836		810		371		1,249
Non-cash information related to right-of-use assets obtained in exchange for lease obligations:
Operating leases	$	138,878	$	6	$	138,884	$	2,924	$	—	$	2,924
Financing leases	5,977		3,508		9,485		3,032		2,349		5,381

Capitalized lease costs are reflected as investing activities on the Company’s Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2023 and 2022.

76

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Future expected lease payments are shown below:

	As of September 30, 2023
	PNM						TNMP				PNMR Consolidated
			Operating										Operating
	Financing		Battery Storage		Other		Financing		Operating		Financing		Battery Storage		Other
	(In thousands)
Remainder of 2023	$	1,344	$	2,947	$	145	$	1,298	$	264	$	2,646	$	2,947	$	409
2024	4,510		11,786		8,154		4,564		945		9,088		11,786		9,099
2025	3,522		11,786		7,433		3,480		770		7,004		11,786		8,203
2026	3,010		11,786		7,024		2,299		76		5,309		11,786		7,100
2027	1,788		11,786		7,028		1,010		—		2,798		11,786		7,028
Later years	1,386		184,041		17,619		219		—		1,605		184,041		17,619
Total minimum lease payments	15,560		234,132		47,403		12,870		2,055		28,450		234,132		49,458
Less: Imputed interest	1,333		95,916		6,736		818		105		2,151		95,916		6,842
Lease liabilities	$	14,227	$	138,216	$	40,667	$	12,052	$	1,950	$	26,299	$	138,216	$	42,616

The above table includes $13.2 million, $12.7 million, and $25.9 million for PNM, TNMP, and PNMR at September 30, 2023 for expected future payments on fleet vehicle and equipment leases that could be avoided if the leased assets were returned and the lessor is able to recover estimated market value for the equipment from third parties.

At September 30, 2023, the Company has various lease arrangements that have been executed but have not yet commenced, which are primarily related to battery storage agreements. The Company currently expects lease commencement dates in 2024, with lease terms expiring in 2044, and will recognize lease assets and liabilities upon lease commencement. The expected total fixed consideration to be paid for these arrangements, which includes non-lease payments, is approximately $961.0 million over the 20-year terms of the agreements.

(14)   Income Taxes

The Company makes an estimate of its anticipated effective tax rate for the year as of the end of each quarterly period within its fiscal year. In interim periods, income tax expense is calculated by applying the anticipated annual effective tax rate to year-to-date earnings before income taxes. Certain unusual or infrequently occurring items are excluded from the estimated annual rate calculation. Such items include the $115.0 million reduction to electric operating revenues for rate credits described in Note 12, regulatory disallowances, excess tax benefits or deficiencies related to stock awards, and Merger-related costs. At September 30, 2023, PNMR, PNM, and TNMP estimated their effective income tax rates for the year ended December 31, 2023 would be 16.05%, 18.90%, and 15.07%. The primary difference between the statutory income tax rates and the effective tax rates is the effect of the reduction in income tax expense resulting from the amortization of excess deferred federal income taxes.

During the nine months ended September 30, 2023, income tax expense calculated by applying the expected annual effective income tax rate to earnings before income taxes was further reduced by excess tax benefits related to stock awards of $0.3 million for PNMR, of which $0.2 million was allocated to PNM and $0.1 million was allocated to TNMP.

Beginning February 2018, PNM’s NM 2016 Rate Case reflects the reduction in the federal corporate income tax rate resulting from enactment of legislation commonly known as the Tax Cuts and Jobs Act (the “Tax Act”), including amortization of excess deferred federal income taxes. In accordance with the order in that case, PNM is returning the protected portion of excess deferred federal income taxes to customers over the average remaining life of plant in service as of December 31, 2017, and the unprotected portion of excess deferred federal income taxes to customers over a period of approximately twenty-three years. The approved settlement in the TNMP 2018 Rate Case includes a reduction in customer rates to reflect the impacts of the Tax Act beginning on January 1, 2019. PNMR, PNM, and TNMP will amortize federal excess deferred income taxes of $22.9 million, $14.3 million, and $8.6 million in 2023. See additional discussion of PNM’s NM 2016 Rate Case and TNMP’s 2018 Rate Case in Note 17 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K. See

77

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

additional discussion of the impacts of the Tax Act in Note 18 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

(15)   Related Party Transactions

PNMR, PNM, TNMP, and NMRD are considered related parties, as is PNMR Services Company, a wholly-owned subsidiary of PNMR that provides corporate services to PNMR and its subsidiaries in accordance with shared services agreements. These services are billed at cost on a monthly basis to the business units. In addition, PNMR provides construction and operations and maintenance services to NMRD, a 50% owned subsidiary of PNMR Development. PNM purchases renewable energy from certain NMRD-owned facilities at a fixed price per MWh of energy produced. PNM also provides interconnection services to PNMR Development and NMRD. See Note 16 for additional discussion of NMRD. The table below summarizes the nature and amount of related party transactions of PNMR, PNM, TNMP, and NMRD:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2023		2022		2023		2022
	(In thousands)
Services billings:
PNMR to PNM	$	29,509	$	26,281	$	90,151	$	82,352
PNMR to TNMP	10,976		9,554		34,703		30,110
PNM to TNMP	100		107		269		322
TNMP to PNMR	35		35		106		106
PNMR to NMRD	71		81		235		226
Renewable energy purchases:
PNM from NMRD	3,652		3,221		9,761		9,642
Interconnection and facility study billings:
PNM to NMRD	—		—		—		—
PNM to PNMR	—		—		—		—
NMRD to PNM	—		—		—		—
Interest billings:
PNMR to PNM	8		4		18		13
PNM to PNMR	153		73		426		143
PNMR to TNMP	117		50		128		166
Income tax sharing payments:
PNMR to PNM	—		—		—		—
TNMP to PNMR	—		—		—		—

(16)   Equity Method Investment

As discussed in Note 21 of the Company’s 2022 Annual Reports on Form 10-K, PNMR Development and AEP OnSite Partners created NMRD in September 2017 to pursue the acquisition, development, and ownership of renewable energy generation projects, primarily in the state of New Mexico. As of September 30, 2023, NMRD’s renewable energy capacity in operation was 185 MW. PNMR Development and AEP OnSite Partners each have a 50% ownership interest in NMRD. The investment in NMRD is accounted for using the equity method of accounting because PNMR’s ownership interest results in significant influence, but not control, over NMRD and its operations. PNMR Development, together with AEP OnSite Partners, has selected an adviser for the sale of NMRD.

In the nine months ended September 30, 2023, PNMR Development and AEP OnSite Partners each made cash contributions to NMRD of $25.8 million for its construction activities. In the nine months ended September 30, 2022, neither PNMR Development nor AEP OnSite Partners made any cash contributions to NMRD for its construction activities.

78

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

PNMR presents its share of net earnings from NMRD in other income on the Condensed Consolidated Statements of Earnings. Summarized financial information for NMRD is as follows:

	Results of Operations
	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(In thousands)
Operating revenues	$	4,020	$	3,407	$	10,525	$	10,224
Operating expenses	1,743		2,381		6,127		7,172
Net earnings	$	2,277	$	1,026	$	4,398	$	3,052

	Financial Position
	September 30,		December 31,
	2023		2022
	(In thousands)
Current assets	$	9,529	$	8,357
Net property, plant, and equipment	229,659		169,440
Non-current assets	2,480		9,631
Total assets	241,668		187,428
Current liabilities	4,176		5,822
Non-current liabilities	355		366
Owners’ equity	$	237,137	$	181,240

(17)     Goodwill

The excess purchase price over the fair value of the assets acquired and the liabilities assumed by PNMR for its 2005 acquisition of TNP Enterprises, Inc. and Subsidiaries (“TNP”) was recorded as goodwill and was pushed down to the businesses acquired. In 2007, the TNMP assets that were included in its New Mexico operations, including goodwill, were transferred to PNM. PNMR’s reporting units that currently have goodwill are PNM and TNMP.

The Company evaluates its goodwill for impairment annually at the reporting unit level or more frequently if circumstances indicate that the goodwill may be impaired. Application of the impairment test requires judgment, including the identification of reporting units, assignment of assets and liabilities to reporting units, and determination of the fair value of each reporting unit.

In certain circumstances an entity may perform a qualitative analysis to conclude that the goodwill of a reporting unit is not impaired. Under a qualitative assessment an entity considers macroeconomic conditions, industry and market considerations, cost factors, overall financial performance, other relevant entity-specific events affecting a reporting unit, as well as whether a sustained decrease (both absolute and relative to its peers) in share price has occurred. An entity considers the extent to which each of the adverse events and circumstances identified could affect the comparison of a reporting unit’s fair value with its carrying amount. An entity places more weight on the events and circumstances that most affect a reporting unit’s fair value or the carrying amount of its net assets. An entity also considers positive and mitigating events and circumstances that may affect its determination of whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. An entity evaluates, on the basis of the weight of evidence, the significance of all identified events and circumstances in the context of determining whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. A quantitative analysis is not required if, after assessing events and circumstances, an entity determines that it is not more likely than not that the fair value of a reporting unit is less than its carrying amount.

In other circumstances, an entity may perform a quantitative analysis to reach the conclusion regarding impairment with respect to a reporting unit. An entity may choose to perform a quantitative analysis without performing a qualitative analysis and may perform a qualitative analysis for certain reporting units, but a quantitative analysis for others. The first step of the quantitative impairment test requires an entity to compare the fair value of the reporting unit with its carrying value, including goodwill. If, as a result of this analysis, the entity concludes there is an indication of impairment in a reporting unit having goodwill, the entity is required to perform the second step of the impairment analysis, determining the amount of goodwill impairment to be recorded. The amount is calculated by comparing the implied fair value of the goodwill to its carrying amount. This exercise would require the entity to allocate the fair value determined in step one to the individual assets and

79

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

liabilities of the reporting unit. Any remaining fair value would be the implied fair value of goodwill on the testing date. To the extent the recorded amount of goodwill of a reporting unit exceeds the implied fair value determined in step two, an impairment loss would be reflected in results of operations.

PNMR periodically updates its quantitative analysis for both PNM and TNMP. The use of a quantitative approach in a given period is not necessarily an indication that a potential impairment has been identified under a qualitative approach.

When PNMR performs a quantitative analysis for PNM or TNMP, a discounted cash flow methodology is primarily used to estimate the fair value of the reporting unit. This analysis requires significant judgments, including estimations of future cash flows, which is dependent on internal forecasts, estimations of long-term growth rates for the business, and determination of appropriate weighted average cost of capital for the reporting unit. Changes in these estimates and assumptions could materially affect the determination of fair value and the conclusion of impairment.

When PNMR performs a qualitative or quantitative analysis for PNM or TNMP, PNMR considers market and macroeconomic factors including changes in growth rates, changes in the Weighted Average Cost of Capital (“WACC”), and changes in discount rates. PNMR also evaluates its stock price relative to historical performance, industry peers, and to major market indices, including an evaluation of PNMR’s market capitalization relative to the carrying value of its reporting units.

For its annual evaluations performed as of April 1, 2023, PNMR performed a qualitative analysis for both the PNM and TNMP reporting units. In addition to the typical considerations discussed above, the qualitative analysis considered changes in the Company’s expectations of future financial performance since the April 1, 2018 quantitative analysis and the previous qualitative analyses through April 1, 2022 performed for PNM, as well as the April 1, 2020 quantitative analysis and the previous qualitative analyses through April 1, 2022 performed for TNMP. This analysis considered Company specific events such as the Merger, potential impacts of legal and regulatory matters discussed in Note 11 and Note 12, including potential outcomes in PNM’s San Juan Abandonment Application, PNM’s Four Corners Abandonment Application, and PNM’s PVNGS Leased Interest Abandonment Application. Based on an evaluation of these and other factors, the Company determined it was not more likely than not that the April 1, 2023 carrying values of PNM and TNMP exceeded their fair value. Since the April 1, 2023 annual evaluation, there have been no events or indications that the fair values of the reporting units with recorded goodwill have decreased below their carrying values.

For its annual evaluations performed as of April 1, 2022, PNMR performed a qualitative analysis for both the PNM and TNMP reporting units. In addition to the typical considerations discussed above, the qualitative analysis considered changes in the Company’s expectations of future financial performance since the April 1, 2018 quantitative analysis and the previous qualitative analyses through April 1, 2021 performed for PNM, as well as the April 1, 2020 quantitative analysis and the previous qualitative analyses through April 1, 2021 performed for TNMP. The April 1, 2018 quantitative evaluations indicated the fair value of the PNM reporting unit, which has goodwill of $51.6 million, exceeded its carrying value by approximately 19%. Based on an evaluation of these and other factors, the Company determined it was not more likely than not that the April 1, 2022 carrying value of PNM exceeded its fair value. The April 1, 2020 quantitative evaluations indicated the fair value of the TNMP reporting unit, which has goodwill of $226.7 million, exceeded its carrying value by approximately 38%. Based on an evaluation of these and other factors, the Company determined it was not more likely than not that the April 1, 2022 carrying value of TNMP exceeded its fair value.

(18)     Merger

On October 20, 2020, PNMR, Avangrid and Merger Sub entered into the Merger Agreement pursuant to which Merger Sub will merge with and into PNMR, with PNMR surviving the Merger as a wholly-owned subsidiary of Avangrid. Pursuant to the Merger Agreement, each issued and outstanding share of PNMR common stock at the Effective Time will be converted into the right to receive $50.30 in cash.

The proposed Merger has been unanimously approved by the Boards of Directors of PNMR, Avangrid and Merger Sub and approved by PNMR shareholders at the Special Meeting of Shareholders held on February 12, 2021.

The Merger Agreement provided that it may be terminated by each of PNMR and Avangrid under certain circumstances, including if the Effective Time shall not have occurred by the January 20, 2022 End Date; however, either PNMR or Avangrid could extend the End Date to April 20, 2022 if all conditions to closing have been satisfied other than the obtaining of all required regulatory approvals. As discussed below, in December 2021, the NMPRC issued an order rejecting the stipulation agreement relating to the Merger. In January 2022, PNMR, Avangrid and Merger Sub entered into an Amendment to the Merger Agreement pursuant to which PNMR and Avangrid agreed to extend the End Date to April 20, 2023. On April 12, 2023, PNMR, Avangrid, and Merger Sub entered into Amendment No. 2 to the Merger Agreement whereby all of the parties agreed to extend the End Date to July 20, 2023. On June 19, 2023, PNMR, Avangrid, and Merger Sub entered into

80

PNM RESOURCES, INC. AND SUBSIDIARIES

PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARIES

TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Amendment No. 3 to the Merger Agreement whereby all of the parties agreed to extend the End Date to December 31, 2023, subject to a three-month extension by PNMR and Avangrid by mutual consent if all of the conditions to closing, other than the conditions relating to regulatory approval, have been satisfied as of December 31, 2023.

The Merger is subject to certain regulatory approvals, including from the NMPRC. The Joint Applicants to the NMPRC application and a number of intervening parties had entered into an amended stipulation and agreement in the Joint Application for approval of Merger pending before the NMPRC. An evidentiary hearing was held in August 2021. On November 1, 2021, a Certification of Stipulation was issued by the hearing examiner, which recommended against approval of the amended stipulation. On December 8, 2021, the NMPRC issued an order adopting the Certification of Stipulation, rejecting the amended stipulation reached by the parties. On January 3, 2022, PNMR and Avangrid filed a notice of appeal with the NM Supreme Court. On February 2, 2022, PNMR and Avangrid filed a statement of issues outlining the argument for appeal. On April 7, 2022, PNMR and Avangrid filed their Brief in Chief with the NM Supreme Court. Answer briefs from the NMPRC were filed on June 14, 2022, and response briefs were filed on August 5, 2022. On March 8, 2023, PNM, Avangrid, and the NMPRC filed a motion with the NM Supreme Court to dismiss the appeal and remand the proceeding back to the NMPRC for further proceedings. On May 15, 2023, the NM Supreme Court issued an order denying the joint motion to dismiss the appeal, retaining jurisdiction over the case. Oral arguments were held on September 15, 2023.

With respect to other regulatory proceedings related to the Merger, in 2021 PNMR received clearances for the Merger from the Federal Trade Commission (“FTC”) under the HSR Act, CFIUS, the FCC, FERC, the PUCT, and the NRC. As a result of the delay in closing of the Merger due to the need to obtain NMPRC approval, PNMR and Avangrid were required to make a new filing under the HSR Act and request extensions of approvals previously received from the FCC and NRC. PNM has received approval from the FCC that runs through March 3, 2024, approval from the NRC that runs through May 25, 2024 and clearance under the HSR Act through March 10, 2024. No additional approvals are required from CFIUS, FERC or the PUCT.

Consummation of the Merger remains subject to the satisfaction or waiver of certain customary closing conditions, including, without limitation, the absence of any material adverse effect on PNMR, the receipt of required regulatory approval from the NMPRC, and the agreements relating to the divestiture of Four Corners being in full force and effect and all applicable regulatory filings associated therewith being made. The agreement relating to the divestiture of Four Corners has been entered into and is in full effect and related filings have been made with the NMPRC.

The Merger Agreement provides for certain customary termination rights. The Merger Agreement further provides that, upon termination of the Merger Agreement under certain specified circumstances (including if Avangrid terminates the Merger Agreement due to a change in recommendation of the Board or if PNMR terminates the Merger Agreement to accept a superior proposal (as defined in the Merger Agreement) and in either case prior to PNMR’s shareholder having approved the Merger), PNMR will be required to pay Avangrid a termination fee of $130.0 million. In addition, the Merger Agreement provides that (i) if the Merger Agreement is terminated by either party due to a failure of a regulatory closing condition and such failure is the result of Avangrid’s breach of its regulatory covenants or (ii) Avangrid fails to effect the closing when all closing conditions have been satisfied and it is otherwise obligated to do so under the Merger Agreement, then, in either such case, upon termination of the Merger Agreement, Avangrid will be required to pay PNMR a termination fee of $184.0 million as the sole and exclusive remedy. Upon the termination of the Merger Agreement under certain specified circumstances involving a breach of the Merger Agreement, either PNMR or Avangrid will be required to reimburse the other party’s reasonable and documented out-of-pocket fees and expenses up to $10.0 million (which amount will be credited toward, and offset against, the payment of any applicable termination fee).

81

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following Management’s Discussion and Analysis of Financial Condition and Results of Operations for PNMR is presented on a combined basis, including certain information applicable to PNM and TNMP. The MD&A for PNM and TNMP is presented as permitted by Form 10-Q General Instruction H(2). This report uses the term “Company” when discussing matters of common applicability to PNMR, PNM, and TNMP. A reference to a “Note” in this Item 2 refers to the accompanying Notes to Condensed Consolidated Financial Statements (Unaudited) included in Item 1, unless otherwise specified. Certain of the tables below may not appear visually accurate due to rounding.

MD&A FOR PNMR

EXECUTIVE SUMMARY

Overview and Strategy

PNMR is a holding company with two regulated utilities serving approximately 822,000 residential, commercial, and industrial customers and end-users of electricity in New Mexico and Texas. PNMR’s electric utilities are PNM and TNMP. PNMR strives to create a clean and bright energy future for customers, communities, and shareholders. PNMR’s strategy and decision-making are focused on safely providing reliable, affordable, and environmentally responsible power built on a foundation of Environmental, Social and Governance (ESG) principles.

Recent Developments

Merger

On October 20, 2020, PNMR, Avangrid and Merger Sub entered into the Merger Agreement pursuant to which Merger Sub will merge with and into PNMR, with PNMR surviving the Merger as a wholly-owned subsidiary of Avangrid. Pursuant to the Merger Agreement, each issued and outstanding share of PNMR common stock at the Effective Time will be converted into the right to receive $50.30 in cash. The proposed Merger has been unanimously approved by the Boards of Directors of PNMR, Avangrid and Merger Sub and approved by PNMR shareholders at the Special Meeting of Shareholders held on February 12, 2021.

The Merger Agreement provided that it may be terminated by each of PNMR and Avangrid under certain circumstances, including if the Effective Time shall not have occurred by the January 20, 2022 End Date. On December 8, 2021, the NMPRC issued an order rejecting the stipulation agreement relating to the Merger. In light of the NMPRC ruling, on January 3, 2022, PNMR, Avangrid and Merger Sub entered into an Amendment to the Merger Agreement pursuant to which PNMR and Avangrid agreed to extend the End Date to April 20, 2023. On April 12, 2023, PNMR, Avangrid, and Merger Sub agreed to further extend the End Date to July 20, 2023. On June 19, 2023, PNMR, Avangrid, and Merger Sub agreed to further extend the End Date to December 31, 2023, subject to a three-month extension. The Merger is subject to certain regulatory approvals, including from the NMPRC. For further discussion regarding the Merger, see Note 18.

Retirement of SJGS

After nearly half a century of reliable service and several years of planning towards its retirement, the last unit of the coal-fired SJGS has been removed from service, as PNM achieves significant progress towards its ESG goals for reducing carbon emissions from its generation portfolio. The four-unit, coal-fired SJGS, whose first unit was brought online in 1973, was reduced to two units at the end of 2017 with the retirement of Units 2 and 3. Unit 1 was retired in June 2022, and Unit 4 was retired in September 2022. Coal-fired generation now comprises less than 10% of resource portfolio capacity for PNM. Carbon-free generation comprises 57% of the Company’s 2.8-gigawatt capacity serving New Mexico customers, with additional renewable resources under development for implementation in the coming years. The Company previously published emissions goals for 2025 including a 60% reduction of carbon emissions from owned generation facilities based on 2005 levels. The retirement of SJGS achieves this interim goal and places the Company in position to reach its industry-leading goal of completely eliminating carbon emissions from its generation portfolio by 2040.

2024 Rate Change

In December 2022, PNM filed the 2024 Rate Change with the NMPRC. The application proposes an increase of $63.8 million in base non-fuel revenues. The requested increase is based on a calendar year 2024 FTY and reflects an ROE of 10.25%. The requested change primarily reflects investments in transmission and distribution infrastructure, largely offset by cost reductions resulting from PNM’s transition to lower-cost, clean generation resources including the retirement of the SJGS and expiration of leased capacity from PVNGS. The request also includes updated depreciation rates for natural gas plants to align with the Company’s 2040 carbon-free portfolio goal. See Note 12.

82

Grid Modernization Application

On October 3, 2022, in compliance with New Mexico Grid Modernization Statute, PNM filed its Grid Modernization Application with the NMPRC. The projects included in the Grid Modernization Application improve customers’ ability to customize their use of energy and ensure that customers, including low-income customers, are a top priority and will benefit from the electricity grid consistent with the Grid Modernization Statute. PNM’s proposal to modernize its electricity grid through infrastructure and technology improvements also increases the efficiency, reliability, resilience, and security of PNM’s electric system. PNM’s application seeks approval of grid modernization investments of approximately $344 million for the first six years of a broader 11-year strategy. The proposed Grid Modernization Rider would recover capital costs, operating expenses, and taxes associated with the investments included in the Grid Modernization Application. See Note 12.

Texas Legislation

In the 2023 Texas Legislative session several bills were passed to support utility reliability and resiliency by encouraging and protecting utility infrastructure investments. The bill with the largest near-term financial impact to TNMP is the DCRF legislation that adds a second filing per year and shortens the regulatory timeframe for the proceedings. Other bills include system resiliency and temporary mobile generation, which provide opportunities for added investment in TNMP’s service territory and reduce uncertainty around rate recovery. Another bill directs ERCOT to develop reliability plans for the Permian Basin by January 30, 2024, which could result in the need for additional investments in the West Texas service territory. Additionally, the Damaging Critical Infrastructure Bill helps protect TNMP’s investments in response to criminal offenses damaging critical infrastructure facilities. These pieces of legislation demonstrate that Texas continues to encourage utility investment and prioritizes timely rate recovery. TNMP will look to prioritize investments aligned with these measures that improve the quality of service for current and future customers.

Financial and Business Objectives

PNMR is focused on achieving three key financial objectives:

•Earning authorized returns on regulated businesses

•Delivering at or above industry-average earnings and dividend growth

•Maintaining investment grade credit ratings

In conjunction with these objectives, PNM and TNMP are dedicated to:

•Maintaining strong employee safety, plant performance, and system reliability

•Delivering a superior customer experience

•Demonstrating environmental stewardship in business operations, including transitioning to an emissions-free generating portfolio by 2040

•Supporting the communities in their service territories

Earning Authorized Returns on Regulated Businesses

PNMR’s success in accomplishing its financial objectives is highly dependent on two key factors: fair and timely regulatory treatment for its utilities and the utilities’ strong operating performance. The Company has multiple strategies to achieve favorable regulatory treatment, all of which have as their foundation a focus on the basics: safety, operational excellence, and customer satisfaction, while engaging stakeholders to build productive relationships. Both PNM and TNMP seek cost recovery for their investments through general rate cases, periodic cost of service filings, and various rate riders.

Fair and timely rate treatment from regulators is crucial to PNM and TNMP in earning their allowed returns and critical for PNMR to achieve its financial objectives. PNMR believes that earning allowed returns is viewed positively by credit rating agencies and that improvements in the Company’s ratings could lower costs to utility customers.

The rates PNM and TNMP charge customers are subject to traditional rate regulation by the NMPRC, FERC, and the PUCT. Additional information about rate filings is provided in Note 17 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

The Energy Transition Act (“ETA”)

On June 14, 2019, Senate Bill 489, known as the ETA, became effective. The ETA requires utilities operating in New Mexico to have renewable portfolios equal to 40% by 2025, 50% by 2030, 80% by 2040, and 100% zero-carbon energy by 2045. The ETA also allows for the recovery of undepreciated investments and decommissioning costs related to qualifying EGUs that the NMPRC has required be removed from retail jurisdictional rates, provided replacement resources to be included

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in retail rates have lower or zero-carbon emissions. The ETA provides for a transition from fossil-fueled generating resources to renewable and other carbon-free resources by allowing utilities to issue Securitized Bonds, or “energy transition bonds,” related to the retirement of certain coal-fired generating facilities to qualified investors. See additional discussion of the ETA in Note 11 and in Note 16 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

The ETA has and will have a significant impact on PNM’s future generation portfolio, including PNM’s retirement of SJGS in 2022 and the potential early exit of Four Corners (subject to regulatory approval). PNM cannot predict the full impact of the ETA on potential future generating resource abandonment and replacement filings with the NMPRC.

State Regulation

SJGS Abandonment Application – In 2019, PNM filed the SJGS Abandonment Application with the NMPRC. The application included several replacement resource scenarios including PNM’s recommended replacement scenario, which is consistent with PNM’s goal of having a 100% emissions-free generating portfolio by 2040 and would have provided cost savings to customers while preserving system reliability.

In 2020, the NMPRC issued an order which authorized PNM to abandon SJGS by June 30, 2022, to issue Securitized Bonds of up to $361 million, and to establish the Energy Transition Charge. The NMPRC’s order required an interim rate rider adjustment upon the start date of the Energy Transition Charge to provide immediate credits to customers for the full value of PNM’s revenue requirement related to SJGS until those reductions are reflected in base rates. In addition, PNM was granted authority to establish regulatory assets to recover costs that PNM will pay prior to the issuance of the Securitized Bonds, including costs associated with the bond issuances as well as for severances, job training, and economic development funds. Later that year, the NMPRC issued an order approving replacement resource selection criteria identified in the ETA.

On February 28, 2022, WRA and CCAE filed a joint motion for order to show cause and enforce financing order and supporting brief, which requested that the NMPRC order PNM to show cause why its rates should not be reduced at the time SJGS is abandoned. On June 17, 2022, the hearing examiners issued a recommended decision requesting the NMPRC issue an order requiring PNM to, among other things, revise its rates to remove all of the costs of SJGS and issue rate credits to customers. On June 29, 2022, the NMPRC issued its final order adopting and approving the recommended decision in its entirety with certain additions. On July 25, 2022, PNM filed an emergency motion seeking an immediate and ongoing stay from the NM Supreme Court for the pendency of the appeal. On September 2, 2022, the NM Supreme Court issued an order granting PNM’s July 25, 2022 motion for partial stay. On November 1, 2022, the NM Supreme Court issued an order continuing the partial stay of the rate credits during the pendency of the appeal. On August 18, 2023, PNM, along with the intervening parties in the pending appeal of the matter addressing customer bill credits and resolution of the remaining steps involved in the SJGS retirement under the ETA, filed an Unopposed Joint Motion for Abeyance and Remand to Implement Settlement and Request for Expedited Order at the NM Supreme Court. In the motion, the parties asked the NM Supreme Court to hold the appeal in abeyance and remand the matter to the NMPRC to allow the NMPRC to consider and take formal action on a unanimous proposed settlement on remand. Under the terms of the unanimous settlement, PNM would provide $115.0 million in rate credits to customers over a one-year period, resolving all disputes raised in the matter addressing customer bill credits involved in the SJGS retirement before the NMPRC, including removal of SJGS ratemaking and prudence issues in the 2024 Rate Change. On September 14, 2023, the NM Supreme Court issued an order granting the unopposed motion and remanded the matter to the NMPRC. On September 21, 2023, the NMPRC approved the unanimous settlement agreement. See additional discussion of the SJGS Abandonment Application in Notes 11 and 12.

Four Corners Abandonment Application - In early 2021, PNM filed the Four Corners Abandonment Application, which sought NMPRC approval to exit PNM’s 13% share of Four Corners as of December 31, 2024, and issuance of approximately $300 million of Securitized Bonds as provided by the ETA. PNM’s filing provided background on the NMPRC’s consideration of the prudence of PNM’s investment in Four Corners explained how the proposed sale and abandonment provides a net public benefit. On December 15, 2021, the NMPRC issued a final order denying approval of the Four Corners Abandonment Application and the corresponding request for issuance of securitized financing. On December 22, 2021, PNM filed a notice of appeal with the NM Supreme Court of the NMPRC decision to deny the application. On July 6, 2023, the NM Supreme Court issued a decision concluding that the NMPRC reasonably and lawfully denied PNM’s application for abandonment, determining that PNM did not meet its burden in challenging the NMPRC’s final order. The Company is evaluating the facts and circumstances surrounding the potential early exit of Four Corners and will determine next steps.

PNM enhanced its plan to exit Four Corners and emphasized its ESG strategy to reduce carbon emissions on March 12, 2021 with an announcement for additional plans allowing for seasonal operations at Four Corners beginning in the fall of 2023, subject to the necessary approvals, including PNM’s Four Corners Abandonment Application at the NMPRC. The solution for seasonal operations would ensure the plant is available to serve each owners’ customer needs during times of peak energy use while minimizing operations during periods of low demand. This approach would result in an estimated annual 20 to 25 percent reduction in carbon emissions at the plant and retains jobs and royalty payments for the Navajo Nation. In the third quarter of 2023, APS notified the other participant owners of Four Corners of their intent to request normal operations between

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November 1, 2023 and May 31, 2024. See additional discussion of the ETA and PNM’s Four Corners Abandonment Application in Notes 11 and 12.

PVNGS Leased Interest Abandonment Application - On April 2, 2021, PNM filed the PVNGS Leased Interest Abandonment Application. In the application PNM requested NMPRC authorization to decertify and abandon its Leased Interest and to create regulatory assets for the associated remaining undepreciated investments with consideration of cost recovery of the undepreciated investments in a future rate case. PNM also sought NMPRC approval to sell and transfer the PNM-owned assets and nuclear fuel supply associated with the Leased Interest to SRP, which will be acquiring the Leased Interest from the lessors upon termination of the existing leases.

On August 25, 2021, the NMPRC issued an order confirming PNM requires no further NMPRC authority to abandon the PVNGS Leased Interest and to sell and transfer the PNM-owned assets and nuclear fuel supply associated with the Leased Interest to SRP. On November 18, 2022, the NMPRC issued its order on Joint Motion for Accounting Order requiring PNM to establish a regulatory liability to track and account for, upon termination of the PVNGS leases, all costs currently borne by ratepayers associated with those leases during pendency of the 2024 Rate Change, subject to a determination of ratemaking treatment. In addition, PNM may establish a regulatory asset account to record undepreciated investment for improvements to the Unit 1 and Unit 2 Leased Interests upon termination of the leases, and to record cost differences in the proceeds from SRP for the sale of the PVNGS Leased Assets and the actual book value for which recovery of these costs will be determined in the 2024 Rate Change. The NMPRC order also states that in its general rate case PNM must address unresolved issues including whether PNM’s decision to renew the five leases and the repurchase of 64.1 MW in PVNGS Unit 2 capacity exposed ratepayers to additional financial liability beyond that to which they would otherwise would have been exposed, and whether PNM should be denied recovery of future decommissioning expenses as a remedy for imprudence. The NMPRC has approved replacement resources for its PVNGS Leased Interest of 300 MW solar PPA combined with a 300 MW battery storage agreement. PNM anticipates these facilities will be in service in 2024 and continues to pursue additional resources to replace the PVNGS leases. For additional information on PNM’s Leased Interest and the associated abandonment application see Note 13 and Note 12, respectively.

Summer Peak Resource Adequacy - Throughout 2021, 2022 and continuing into 2023, PNM provided notices of delays and status updates to the NMPRC for the approved SJGS replacement resource projects as well as delays in replacement resources for the PVNGS leased capacity that expired in January 2023. On January 30, 2023, PNM informed the NMPRC that it had provided written notice to one of the SJGS replacement resource developers for 100 MW solar PPA and a 30 MW battery storage agreement of an event of seller default and of early termination and as a result the project would not proceed. In the second half of 2022 and the first quarter of 2023, PNM entered into agreements totaling 420 MW of firm power purchases for the summer peak in 2023 and the purchase of 40 MW of firm capacity at PVNGS for all twelve months of 2023, providing PNM with a projected system reserve margin necessary to meet customer demand. While PNM experienced a new system peak retail load of 2,139 MW on July 19, 2022, and in 2023 experienced a new system peak retail load of 2,162 MW on July 18, 2023, PNM’s generation resources performed sufficiently with no challenges to resource adequacy during the 2022 and 2023 summer peak seasons. PNM anticipates that a majority of the SJGS and PVNGS leased capacity replacement resources will be available prior to the 2024 summer peak season and may also secure additional firm energy market purchases necessary to meet customer load during the 2024 summer season. See Note 12.

2020 Decoupling Petition – In 2020, PNM filed a petition for approval of a rate adjustment mechanism that would decouple the rates of its residential and small power rate classes. Decoupling is a rate design principle that severs the link between the recovery of fixed costs of the utility through volumetric charges. On April 27, 2022, the NMPRC issued an order finding that the EUEA does not mandate the NMPRC to authorize or approve a full decoupling mechanism, defining full decoupling as limited to energy efficiency and load management measures and programs. On May 24, 2022, PNM filed a notice of appeal with the NM Supreme Court. See Note 12.

PNM Solar Direct - In 2019, PNM filed an application with the NMPRC for approval of a program under which qualified governmental and large commercial customers could participate in a voluntary renewable energy procurement program. PNM proposed to recover costs of the program directly from subscribing customers through a rate rider. Under the rider, PNM would procure renewable energy from 50 MW of solar-PV facilities under a 15-year PPA. PNM had fully subscribed the entire output of the 50 MW facilities at the time of the filing. In March 2020, the hearing examiner issued a recommended decision recommending approval of PNM’s application that was subsequently approved by the NMPRC. These facilities began commercial operations in the second quarter of 2022.

The Community Solar Act - The Community Solar Act establishes a program that allows for the development of community solar facilities and provides customers of a qualifying utility with the option of accessing solar energy produced by a community solar facility in accordance with the Community Solar Act. The NMPRC is charged with administering the Community Solar Act program, establishing a total maximum capacity of 200 MW community solar facilities (applicable until November 2024) and allocating proportionally to the New Mexico electric investor-owned utilities and participating cooperatives. As required under the Community Solar Act, on March 30, 2022, the NMPRC issued an order that adopted a rule on the administration of the Community Solar Act program. See Note 12.

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Advanced Metering – Currently, TNMP has approximately 272,000 advanced meters across its service territory. Beginning in 2019, the majority of costs associated with TNMP’s AMS program are being recovered through base rates. On July 14, 2021, TNMP filed a request with the PUCT to consider and approve its final reconciliation of the costs spent on the deployment of AMS from April 1, 2018 through December 31, 2018 of $9.0 million and approve appropriate carrying charges until full collection. The PUCT approved substantially all costs on February 10, 2022. In 2020, TNMP filed an application with the PUCT for authorization to implement necessary technological upgrades of approximately $46 million to its AMS program, which the PUCT approved on January 14, 2021. TNMP is recovering the investment associated with the upgrade in its approved 2023 DCRF. PNM’s Grid Modernization Application includes proposals for installation and deployment of advanced metering infrastructure investments. See Note 12.

Rate Riders and Interim Rate Relief – The PUCT has approved mechanisms that allow TNMP to recover capital invested in transmission and distribution projects without having to file a general rate case. The PUCT also approved rate riders that allow TNMP to recover amounts related to energy efficiency and third-party transmission costs. The NMPRC has approved PNM recovering fuel costs through the FPPAC, as well as rate riders for renewable energy, energy efficiency and the TEP. These mechanisms allow for more timely recovery of investments.

FERC Regulation

Rates PNM charges wholesale transmission customers are subject to traditional rate regulation by FERC. Rates charged to wholesale electric transmission customers, other than customers on the Western Spirit Line, are based on a formula rate mechanism pursuant to which rates for wholesale transmission service are calculated annually in accordance with an approved formula. The formula includes updating cost of service components, including investment in plant and operating expenses, based on information contained in PNM’s annual financial report filed with FERC, as well as including projected transmission capital projects to be placed into service in the following year. The projections included are subject to true-up. Certain items, including changes to return on equity and depreciation rates, require a separate filing to be made with FERC before being included in the formula rate.

Delivering At or Above Industry-Average Earnings and Dividend Growth

PNMR’s financial objective to deliver at or above industry-average earnings and dividend growth enables investors to realize the value of their investment in the Company’s business. Earnings growth is based on ongoing earnings, which is a non-GAAP financial measure that excludes from GAAP earnings certain non-recurring, infrequent, and other items that are not indicative of fundamental changes in the earnings capacity of the Company’s operations. PNMR uses ongoing earnings to evaluate the operations of the Company and to establish goals, including those used for certain aspects of incentive compensation, for management and employees.

PNMR targets a dividend payout ratio in the 50% to 60% range of its ongoing earnings. PNMR expects to provide at or above industry-average dividend growth in the near-term. The Board will continue to evaluate the dividend on an annual basis, considering sustainability and growth, capital planning, and industry standards.

Under the terms of the Merger Agreement, PNMR has agreed not to declare, set aside, make or pay any dividend or other distribution, payable in cash, stock, property or otherwise, with respect to any of its equity securities, or make any other actual, constructive or deemed distribution in respect of any equity securities (except (i) PNMR may continue the declaration and payment of planned regular quarterly cash dividends on PNMR common stock for each quarterly period ended after the date of the Merger Agreement, which for any fiscal quarter in 2023 shall not exceed $0.3675, with usual record and payment dates in accordance with past dividend practice, and (ii) for any cash dividend or cash distribution by a wholly-owned subsidiary of PNMR to PNMR or another wholly-owned subsidiary of PNMR).

The Board approved the following increases in the indicated annual common stock dividend:

Approval Date	Percent Increase
February 2022	6.1%
December 2022	5.8%

Maintaining Investment Grade Credit Ratings

The Company is committed to maintaining investment grade credit ratings in order to reduce the cost of debt financing and to help ensure access to credit markets, when required. On February 10, 2022, Moody’s downgraded TNMP’s issuer rating from A3 to Baa1 and changed the outlook from negative to stable. See the subheading Liquidity included in the full discussion of Liquidity and Capital Resources below for the specific credit ratings for PNMR, PNM, and TNMP. All of the credit ratings issued by both Moody’s and S&P on the Company’s debt continue to be investment grade.

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Business Focus

To achieve its business objectives, focus is directed in key areas: Safe, Reliable and Affordable Power; Utility Plant and Strategic Investments; Environmentally Responsible Power; and Customer, Stakeholders, and Community Engagement. The Company works closely with its stakeholders to ensure that resource plans and infrastructure investments benefit from robust public dialogue and balance the diverse needs of our communities. Equally important is the focus of PNMR’s utilities on customer satisfaction and community engagement.

Safe, Reliable, and Affordable Power

Safety is the first priority of our business and a core value of the Company. PNMR utilizes a Safety Management System to provide clear direction, objectives and targets for managing safety performance and minimizing risks and empowers employees to “Be the Reason Everyone Goes Home Safe”.

PNMR measures reliability and benchmark performance of PNM and TNMP against other utilities using industry-standard metrics, including System Average Interruption Duration Index (“SAIDI”) and System Average Interruption Frequency Index (“SAIFI”). PNM’s and TNMP’s investment plans include projects designed to support reliability and reduce the amount of time customers are without power.

PNMR and its utilities are aware of the important roles they play in enhancing economic vitality in their service territories. Management believes that maintaining strong and modern electric infrastructure is critical to ensuring reliability and supporting economic growth. When contemplating expanding or relocating their operations, businesses consider energy affordability and reliability to be important factors. PNM and TNMP strive to balance service affordability with infrastructure investment to maintain a high level of electric reliability and to deliver a safe and superior customer experience. Investing in PNM’s and TNMP’s infrastructure is critical to ensuring reliability and meeting future energy needs. Both utilities have long-established records of providing customers with safe and reliable electric service.

The Company continues to monitor and respond to developments related to COVID-19, which includes working with its suppliers to manage the impacts to its supply chain. The Company also remains focused on the integrity of its information systems and other technology systems used to run its business. However, the Company cannot predict the extent of its effects on the global, national or local economy, or on the Company’s financial position, results of operations, and cash flows. The Company will continue to monitor these developments and will remain focused on protecting the health and safety of its customers, employees, contractors, and other stakeholders, and on its objective to provide safe, reliable, affordable and environmentally responsible power.

On April 1, 2021, PNM joined and began participating in the EIM. The EIM is a real-time wholesale energy trading market operated by the CAISO that enables participating electric utilities to buy and sell energy. The EIM aggregates the variability of electricity generation and load for multiple balancing authority areas and utility jurisdictions. In addition, the EIM facilitates greater integration of renewable resources through the aggregation of flexible resources by capturing diversity benefits from the expanding geographic footprint and the expanded potential uses for those resources. PNM completed a cost-benefit analysis, which indicated participation in the EIM would provide substantial benefits to retail customers. In 2018, PNM filed an application with the NMPRC requesting, among other things, to recover initial capital investments and authorization to establish a regulatory asset to recover other expenses that would be incurred in order to join the EIM. The NMPRC approved the establishment of a regulatory asset but deferred certain rate making issues, including but not limited to issues related to implementation and ongoing EIM costs and savings, the prudence and reasonableness of costs to be included in the regulatory asset, and the period over which costs would be charged to customers until the 2024 Rate Change. PNM has experienced an aggregate of $85.3 million in cost savings to customers through participation in the EIM, which includes $8.5 million and $38.2 million in the three and nine months ended September 30, 2023. PNM passes the cost savings through to customers under PNM’s FPPAC.

PNM joined the Western Resource Adequacy Program (“WRAP”) in April 2023 to bolster PNM’s preparations for times of critical need. WRAP is a first-of-its-kind program in the West that adds a region-wide coordination between power providers for assessing and addressing resource adequacy. This step helps ensure regional resource availability is visible and coordinated in the event PNM customers are critically impacted by a resource emergency. WRAP is currently in the non-binding phases of the program, which is expected to continue through the winter of 2025.

Utility Plant and Strategic Investments

Utility Plant Investments – During the 2021 and 2022 periods, PNM and TNMP together invested $1.8 billion in utility plant, including substations, power plants, nuclear fuel, and transmission and distribution systems. New Mexico’s clean energy future depends on a reliable, resilient, secure grid to deliver an evolving mix of energy resources to customers. PNM has launched a capital initiative, which emphasizes new investments in its transmission and distribution infrastructure with three primary objectives: delivering clean energy, enhancing customer satisfaction and increasing grid resilience. Projects are aimed

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at advancing the infrastructure beyond its original architecture to a more flexible and redundant system accommodating growing amounts of intermittent and distributed generation resources and integrating evolving technologies that provide long-term customer value. In addition, projects included in the Grid Modernization Application improve customers’ ability to customize their use of energy and modernize PNM’s electric grid through infrastructure and technology improvements. Consistent growth in system demand at TNMP and growing encouragement for infrastructure investments from the Texas legislature to support resiliency, emphasize the need for new investments in TNMP’s service territory. See the subheading Capital Requirements included in the full discussion of Liquidity and Capital Resources below for additional discussion of the Company’s projected capital requirements.

Strategic Investments – In 2017, PNMR Development and AEP OnSite Partners created NMRD to pursue the acquisition, development, and ownership of renewable energy generation projects, primarily in the state of New Mexico. PNMR Development and AEP OnSite Partners each have a 50% ownership interest in NMRD. As of September 30, 2023, NMRD’s renewable energy capacity in operation was 185.1 MW, which includes 180 MW of solar-PV facilities to supply energy to the Meta data center located within PNM’s service territory, 1.9 MW to supply energy to Columbus Electric Cooperative located in southwest New Mexico, 2.0 MW to supply energy to the Central New Mexico Electric Cooperative, and 1.2 MW of solar-PV facilities to supply energy to the City of Rio Rancho, New Mexico. On July 24, 2023, PNM filed an application with the NMPRC for approval to service the data center for an additional 140 MW of solar PPA combined with 50 MW of battery storage expected to be operational in 2025. PNMR Development, together with AEP OnSite Partners, has selected an adviser for the sale of NMRD. Proceeds resulting from the sale will support the funding of regulated capital investments.

Integrated Resource Plan

NMPRC rules require that investor-owned utilities file an IRP every three years. The IRP is required to cover a 20-year planning period and contain an action plan covering the first four years of that period. On September 14, 2022 and November 2, 2022, the NMPRC adopted revisions to the IRP Rule. The revisions revamp and modernize the planning process to accommodate increased stakeholder involvement. On December 2, 2022, PNM filed an appeal with the NM Supreme Court of the NMPRC’s final order which adopted revisions to the IRP Rule. See additional discussion of the NMPRC adopted revision to the IRP Rule in Note 12.

In the second quarter of 2022, PNM initiated its 2023 IRP process which will cover the 20-year planning period from 2023 through 2043. Consistent with historical practice, PNM is receiving public input from interested parties as part of this process. On March 1, 2023, the NMPRC issued an order granting PNM’s Motion for Extension of time to file its 2023 IRP until December 15, 2023, and the deadline for commencing the facilitated stakeholder process, which commenced on June 15, 2023.

Environmentally Responsible Power

PNMR has a long-standing record of environmental stewardship. PNM’s environmental focus is in three key areas:

•Developing strategies to provide reliable and affordable power while transitioning to a 100% emissions-free generating portfolio by 2040

•Preparing PNM’s system to meet New Mexico’s increasing renewable energy requirements as cost-effectively as possible

•Increasing energy efficiency participation

PNMR’s corporate website (www.pnmresources.com) includes a dedicated section providing key environmental and other sustainability information related to PNM’s and TNMP’s operations and other information that collectively demonstrates the Company’s commitment to ESG principles. This information highlights plans for PNM to be coal-free no later than 2031 and to achieve an emissions-free generating portfolio by 2040.

In February 2022, PNM named its first Chief Sustainability Officer. The Chief Sustainability Officer is responsible for developing and implementing the Company’s business strategy and positions on environmental and sustainability policy issues and is charged with establishing organization-wide policies, strategies, goals, objectives and programs that advance sustainability and ensure compliance with regulations. The role serves as the Company’s primary contact with various regulatory and stakeholder agencies on environmental matters. In addition, the role leads environmental justice work, incorporating impacts to tribal, worker and affected communities and advancing ESG reporting.

PNM’s grid modernization plan is a major step forward to providing reliable, affordable and sustainable energy. As part of that plan, PNM will promote energy equity where technology like smart meters and distribution upgrades will be provided to low-income areas first in order to allow customers to gain insights into their energy usage in order to improve affordability and create fairer access to energy.

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In 2020, PNM announced an agreement to partner with Sandia National Laboratories in research and development projects focused on energy resiliency, clean energy, and national security. The partnership demonstrates PNMR’s commitment to ESG principles and its support of projects that further its emissions-free generation goals and plans for a reliable, resilient, and secure grid to deliver New Mexico’s clean energy future. PNM also recently joined the Electric Power Research Institute (“EPRI”) Climate READi (REsilience and ADaptation) Initiative, a three-year initiative to develop a comprehensive and consistent approach to physical climate risk and facilitate the analysis and application of appropriate climate data among all stakeholders to enhance the planning, design and operation of a resilient power system. In addition, PNM submitted a Time-of-Day pilot proposal in the 2024 Rate Change filing with the objective of incentivizing customers, through price signals, to use energy during the day when renewable generation is abundant.

The Infrastructure Investment and Jobs Act, also commonly known as the Bipartisan Infrastructure Law (“BIL”), was signed into law on November 15, 2021. This act represents a “once-in-a-generation” investment designed to modernize and upgrade America’s infrastructure. The BIL includes historic investments to upgrade the transmission and distribution systems to improve reliability and resilience, and to facilitate the deployment of more affordable and cleaner energy across the country. In addition to the recent filing of PNM’s Grid Modernization Application with the NMPRC, the Company is currently monitoring the release of grant opportunities by the U.S. Department of Energy and the State Energy, Minerals and Natural Resources Department, and has applied for funding to supplement the investment in the Grid Modernization Application. In collaboration with a coalition including private companies, New Mexico State University, the National Renewable Energy Laboratory, and principal grantee GridBeyond Ltd, PNM was awarded a BIL grant through DOE in the Advanced Reliability and Resiliency Operations for Wind and Solar (ARROWS) program. This grant provides $3.9 million in BIL funding, with a $3.9 million local match, and aims to boost confidence in renewable power investment using GridBeyond Ltd artificial intelligence (AI) -powered distributed energy resource management system (iDERMS) technology. The AI-powered platform will be used to forecast, optimize, and control resources such as wind, solar and batteries on PNM’s power grid in real-time. Field and lab tests of the technology will enable GridBeyond Ltd to collect, analyze, and quantify the overall energy savings and determine how successfully it integrates these resources against a backdrop of variable renewable power output and storage.

On August 16, 2022, President Biden signed the Inflation Reduction Act of 2022 (the “IRA”) into law. The IRA will provide significant benefits for PNMR and its customers by extending and enhancing clean energy incentives such as the investment tax credit and production tax credit. As the Company continues its transition away from carbon emitting sources, these credits will reduce the cost of renewable investments. In addition, the IRA includes a new production tax credit for existing nuclear facilities that is expected to create an added benefit for PNM’s ownership in the carbon-free PVNGS. Other IRA provisions will encourage transportation electrification with new electric vehicle credits and added incentives in vehicle charging infrastructure. For many of the IRA provisions, additional clarification and detailed guidance from the IRS is still pending.

Electric Vehicles

PNMR is building upon its ESG goal of 100% emissions-free generation by 2040 with plans for additional emissions reductions through the electrification of its vehicle fleet. Growing the number of electric vehicles within the Company’s fleet will benefit the environment and lower fuel costs furthering the commitment to ESG principles. Under the commitment, existing fleet vehicles will be replaced as they are retired with an increasing percentage of electric vehicles. The goals call for 25% of all light duty fleet purchases to be electric by 2025 and 50% to be electric by 2030.

To demonstrate PNMR’s commitment to increase the electrification of vehicles in its service territory, PNM began to implement the TEP in 2022. TEP supports customer adoption of electric vehicles by addressing barriers to adoption. PNM’s TEP program budget provides both residential and non-residential customers funding towards the purchase of chargers and/or behind-the-meter infrastructure, as well as customer education and outreach on EV-specific electricity rates to encourage charging during off-peak periods. Over 25% of the program budget is dedicated to low- and moderate-income customers to plan for an equitable transition to an electrified transportation sector.

In 2021, PNM announced that it will be joining the National Electric Highway Coalition, which plans to build fast-charging ports along major U.S. travel corridors. The coalition, with approximately 50 investor-owned electric companies is committed to providing EV fast charging ports that will allow the public to drive EVs with confidence throughout the country’s major roadways by the end of 2023.

Other Environmental Matters

Four Corners may be required to comply with environmental rules that affect coal-fired generating units, including regional haze rules and the ETA. On May 23, 2023, EPA proposed new carbon pollution standards for coal and natural gas-fired power plants under Section 111 of the CAA. PNM is currently evaluating the proposed rule, which will have an impact on Four Corners as an existing coal-fired power plant and could potentially affect PNM’s gas resources as well. See Note 11.

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Renewable Energy

PNM’s renewable procurements include utility-owned solar capacity, as well as solar, wind and geothermal energy purchased under PPAs. As of September 30, 2023, PNM has 158 MW of utility-owned solar capacity in operation. In addition, PNM purchases energy from a customer-owned distributed solar generation program that had an installed capacity of 273.9 MW at September 30, 2023. PNM also owns the 500 KW PNM Prosperity Energy Storage Project. The project was one of the first combinations of battery storage and solar-PV energy in the nation and involved extensive research and development of advanced grid concepts. The facility also was the nation’s first solar storage facility fully integrated into a utility’s power grid. PNM also purchases the output from New Mexico Wind, a 200 MW wind facility, and the output of Red Mesa Wind, an existing 102 MW wind energy center. PNM’s 2020 renewable energy procurement plan was approved by the NMPRC in January 2020 and includes a PPA to procure 140 MW of renewable energy and RECs from La Joya Wind II that became operational in June 2021. Under the Solar Direct program discussed above, PNM procures renewable energy from 50 MW of solar-PV facilities under a 15-year PPA. The NMPRC approved the portfolio to replace the retirement of SJGS resulting in PNM executing solar PPAs of 550 MW combined with 270 MW of battery storage agreements. In the third quarter of 2023, two of these battery storage facilities with an aggregate capacity of 170 MW began commercial operations. In addition, the PVNGS Leased Interest Abandonment Application approved by the NMPRC includes a 300 MW solar PPA combined with a 300 MW battery storage agreement. On October 25, 2023, PNM filed an application with the NMPRC seeking approval of resources for the 2026 summer peak which includes a 100 MW solar PPA, three battery storage agreements totaling 250 MW, and a 60 MW PNM owned battery storage system. The majority of these renewable resources are key means for PNM to meet the RPS and related regulations that require PNM to achieve prescribed levels of energy sales from renewable sources, including those set by the ETA, without exceeding cost requirements. See additional discussion of the ETA and PNM’s Abandonment Applications in Notes 11 and 12.

As discussed in Strategic Investments above, PNM is currently purchasing the output of 180 MW of solar capacity from NMRD that is used to serve the Meta data center. On July 24, 2023, PNM filed an application with the NMPRC for approval to service the data center for an additional 140 MW of solar PPA combined with 50 MW of battery storage from NMRD expected to be operational in 2025. PNM has also entered into three separate 25-year PPAs to purchase renewable energy and RECs to be used by PNM to supply additional renewable power to the Meta data center. These PPAs include the purchase of power and RECs from two wind projects totaling 216 MW and a 50 MW solar-PV project. In addition, PNM has authorization to service the Meta data center for an additional 190 MW of solar PPA combined with 50 MW of battery storage.

On May 3, 2023, PNM filed an application for a CCN for two battery energy storage systems, 6 MW each, located on PNM’s distribution system in Valencia and Bernalillo counties. PNM intends to construct, own, and operate these systems that will be interconnected to the distribution system on feeders that currently exceed their existing hosting capacity limits due to the high amount of solar production connected to them. The deployment of battery energy storage systems on these feeders at capacity will bring the power flow on the feeders back within design limits, potentially allowing a number of solar interconnection applications currently on hold to interconnect, which will in turn reduce carbon emissions and the need to curtail solar production in times of oversupply. PNM is requesting approval of the CCN Application, with an estimated total cost of $25.8 million, by December 31, 2023 to support the proposed construction schedule and have the battery energy storage systems begin serving customers in June 2024. See Note 12.

PNM will continue to procure renewable resources while balancing the impact to customers’ electricity costs in order to meet New Mexico’s escalating RPS and carbon-free resource requirements.

Energy Efficiency

Energy efficiency plays a significant role in helping to keep customers’ electricity costs low while meeting their energy needs and is one of the Company’s approaches to supporting environmentally responsible power. PNM’s and TNMP’s energy efficiency and load management portfolios continue to achieve robust results. In 2022, incremental energy saved as a result of new participation in PNM’s portfolio of energy efficiency programs was 104 GWh. This is equivalent to the annual consumption of approximately 14,935 homes in PNM’s service territory. PNM’s load management and annual energy efficiency programs also help lower peak demand requirements. In 2022, TNMP’s incremental energy saved as a result of new participation in TNMP’s energy efficiency programs is estimated to be approximately 15 GWh. This is equivalent to the annual consumption of approximately 2,082 homes in TNMP’s service territory. TNMP earned the 2023 Energy Star Partner of the Year - Sustained Excellence Award, recognizing long-term commitment to fighting climate change and protecting public health through energy efficiency. For information on PNM’s and TNMP’s energy efficiency filing with the NMPRC and PUCT see Note 12.

Water Conservation and Solid Waste Reduction

PNM continues its efforts to reduce the amount of fresh water used to make electricity (about 45% more efficient than in 2005). Continued growth in PNM’s fleet of solar and wind energy sources, energy efficiency programs, and innovative uses of air-cooling technology have contributed to this reduction. Water usage has continued to decline as PNM has substituted less

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fresh-water-intensive generation resources to replace SJGS. As the Company moves forward with its mission to achieve 100% carbon-free generation by 2040, it expects that more significant water savings will be gained. Shutting down SJGS in 2022 and Four Corners by 2031 will allow the Company to reach our goals for reduced freshwater use at 80% by 2035 and 90% by 2040 from 2005 levels. Focusing on responsible stewardship of New Mexico’s scarce water resources improves PNM’s water-resilience in the face of persistent drought and ever-increasing demands for water to spur the growth of New Mexico’s economy.

In addition to the above areas of focus, the Company is working to reduce the amount of solid waste going to landfills through increased recycling and reduction of waste. In 2022, 15 of the Company’s 22 facilities met or exceeded the solid waste diversion goal of a 65% diversion rate. The Company expects to continue to do well in this area in the future.

Customer, Stakeholder, and Community Engagement

Another key element of the Company’s commitment to ESG principles is fostering relationships with its customers, stakeholders, and communities. The Company strives to deliver a superior customer experience. Through outreach, collaboration, and various community-oriented programs, the Company has demonstrated a commitment to building productive relationships with stakeholders, including customers, community partners, regulators, intervenors, legislators, and shareholders. In the third quarter of 2022, PNM made payments of $19.8 million to promote economic development in areas impacted by the retirement of SJGS. PNM continues to focus its efforts to enhance the customer experience through customer service improvements, including enhanced customer service engagement options, strategic customer outreach, and improved communications. These efforts are supported by market research to understand the varying needs of customers, identifying and establishing valued services and programs, and proactively communicating and engaging with customers. In 2022, PNM and the electric utility industry as a whole, have experienced a decline in customer satisfaction as measured by J.D. Power. However, PNM remains focused on continuously improving its customers’ experience at every touchpoint and placing greater focus on customer assistance through economic uncertainty.

The Company utilizes a number of communications channels and strategic content to serve and engage its many stakeholders. PNM’s website provides the details of major regulatory filings, including general rate requests, as well as the background on PNM’s efforts to maintain reliability, keep prices affordable, and protect the environment. The Company’s website is also a resource for information about PNM’s operations and community outreach efforts, including plans for building a sustainable energy future for New Mexico and to transition to an emissions-free generating portfolio by 2040. PNM also leverages social media in communications with customers on various topics such as education, outage alerts, safety, customer service, and PNM’s community partnerships in philanthropic projects. As discussed above, PNMR’s corporate website includes a dedicated section providing additional information regarding the Company’s commitment to ESG principles and other sustainability efforts.

With reliability being the primary role of a transmission and distribution service provider in Texas’ deregulated market, TNMP continues to focus on keeping end-users updated about interruptions and to encourage consumer preparation when severe weather is forecasted. In both 2021 and 2022, TNMP provided 30-person teams in support of other utilities that experienced significant damage to their transmission and distribution system as a result of Hurricane Ida and Hurricane Ian. TNMP has been honored by the Edison Electric Institute eight times since 2012 for its assistance to out-of-state utilities affected by hurricanes. TNMP has also been honored three times since 2008 for hurricane response in its own territory.

Local relationships and one-on-one communications remain two of the most valuable ways both PNM and TNMP connect with their stakeholders. Both companies maintain long-standing relationships with governmental representatives and key electricity consumers to ensure that these stakeholders are updated on Company investments and initiatives. Key electricity consumers also have dedicated Company contacts that support their important service needs.

Another demonstration of the Company’s commitment to ESG principles is the Company’s tradition of supporting the communities it serves in New Mexico and Texas. This support extends beyond corporate giving and financial donations from the PNM Resources Foundation to also include collaborations on community projects, customer low-income assistance programs, and employee volunteerism.

During the three years ended December 31, 2022, corporate giving contributed $10.9 million to civic, educational, environmental, low income, and economic development organizations. During 2023, corporate giving has maintained a strategic focus on these pillars and continues to highlight corporate citizenship through active involvement with sponsorships demonstrating PNM’s commitment to the community. In addition, emergency relief funds in 2022 supported non-profits providing response to the fires in northern and southern New Mexico. Also in December 2022, PNM made donations totaling $150,000 to food banks across the state of New Mexico including tribal communities. In the third quarter of 2023, PNM shareholders donated $0.6 million to a newly created PNM Summer Heat Bill Help Fund which delivered crucial relief to low and moderate customers struggling to pay their electric bills during the record-breaking 2023 summer heatwave and $0.5 million was given to the PNM Good Neighbor Fund.

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PNMR recognizes its responsibility to support programs and organizations that enrich the quality of life across its service territories and seeks opportunities to further demonstrate its commitment in these areas as needs arise. In response to community needs, PNMR partners with other corporate funders to support nonprofits and small businesses. While its service territory does not include the Navajo Nation, PNM’s operations include generating facilities and employees in this region. The PNM Navajo Nation Workforce Training Scholarship Program provides support for Navajo tribal members and encourages the pursuit of education and training in existing and emerging jobs in the communities in which they live. PNM has invested in paid summer college engineering internship programs for American Indian students available in the greater Albuquerque area, established the PNM Pueblo Education Scholarship Endowment to invest in higher education for Native American Indian students, and supported the Coalition to Stop Violence Against Native Women. PNM also continues to partner in the Light up Navajo project, piloted in 2019 and modeled after mutual aid to connect homes without electricity to the power grid. PNM has partnered with New Mexico universities to enhance intern programs and developed a business coalition model to drive economic development through intern partnerships. PNM has also partnered with key nonprofit organizations to initiate funding and action for programs focused on diversity, equity and inclusion.

Another important outreach program is tailored for low-income customers and includes the PNM Good Neighbor Fund to provide customer assistance with their electric utility bills. As a result of these communication efforts, 3,488 families in need received emergency assistance through the PNM Good Neighbor Fund during 2022. Additionally, PNM has worked closely with the New Mexico Department of Finance and Administration to implement strategies ensuring customers receive rent benefits, including utility bill assistance, from the Emergency Rental Assistance Program (“ERAP”). As a result of these efforts, the ERAP has paid over $8.8 million in customer arrears since the launch of the program in March 2021.

Employee volunteers are the lifeblood of a healthy corporate culture. Community giving through volunteers’ time and effort is at the heart of employee engagement. Throughout 2023, the Company is holding large-scale volunteer events, working alongside nonprofits, schools, and vulnerable communities throughout New Mexico and Texas. More than 500 employees in both states participated in the “Day of Service”, a workday event encouraging employee volunteerism. Throughout the year, employees volunteer their time generously through their independent volunteer activities and board participation. Employees strengthen community resilience by giving at least 8,000 volunteer hours each year to support the health, safety, and well-being of diverse communities.

In addition to the extensive engagement both PNM and TNMP have with nonprofit organizations in their communities, the PNM Resources Foundation provides nearly $1.2 million in grant funding each year across New Mexico and Texas. These grants help nonprofits innovate or sustain programs to grow and develop their mission, develop and implement environmental programs, and provide educational opportunities. The PNM Resources Foundation continued to expand its matching and volunteer grant programs and the annual amount of matching donations available to each of its employees was increased. The PNM Resources Foundation also approved an increase to the amount awarded to employees, through the employee crisis management fund, who have been affected by the wildfires. Throughout 2023, the Foundation is celebrating its 40th year of serving community needs highlighting education, inclusion, the environment and community vitality, and, in addition awarded $0.7 million to 44 organizations in New Mexico and Texas.

Economic Factors

PNM – In the three and nine months ended September 30, 2023, PNM experienced an increase of 0.8% and a decrease of 0.2% in weather normalized residential load. Weather normalized commercial load experienced a decrease of 1.6% and an increase of 0.1% compared to 2022. In addition, PNM experienced a decrease in industrial load of 6.4% and 4.8% compared to 2022.

TNMP – In the three and nine months ended September 30, 2023, TNMP experienced a decrease of 1.8% and 0.8% in volumetric weather normalized retail load compared to 2022. Weather normalized demand-based load, excluding retail transmission consumers increased 5.0% and 18.7% in the three and nine months ended September 30, 2023 compared to 2022.

The Company is closely monitoring the impacts on the capital markets of other macroeconomic conditions, including actions by the Federal Reserve to address inflationary concerns or other market conditions, and geopolitical activity. The Company has not experienced, nor does it expect significant negative impacts to customer usage at PNM and TNMP resulting from these economic impacts. However, if current economic conditions worsen, the Company may be required to implement additional measures such as reducing or delaying operating and maintenance expenses and planned capital expenditures.

Results of Operations

Net earnings attributable to PNMR were $138.0 million, or $1.60 per diluted share in the nine months ended September 30, 2023 compared to $153.8 million, or $1.78 per diluted share in 2022. Among other things, earnings in the nine months ended September 30, 2023 benefited from higher transmission margin at PNM and TNMP, warmer weather at PNM, higher distribution rates at TNMP, higher demand-based load at TNMP, increased performance on PNM’s NDT, coal mine reclamation and SJGS decommissioning investment securities, and decreased operational and maintenance expense and

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depreciation expense at PNM primarily due to the retirement of SJGS and the disposition of the PVNGS Unit 1 Leased Interest. These increases were more than offset by SJGS rate credits, higher employee related, outside services and vegetation management expenses at PNM and TNMP, increased depreciation and property taxes at TNMP due to increased plant in service, new capacity arrangements at PNM, lower weather normalized retail load at PNM, milder weather at TNMP, and higher interest charges at PNM, TNMP and Corporate and Other. Additional information on factors impacting results of operations for each segment is discussed below under Results of Operations.

Liquidity and Capital Resources

PNMR, PNM, and TNMP have revolving credit facilities with capacities of $300.0 million, $440.0 million, and $100.0 million. Total availability for PNMR on a consolidated basis was $438.2 million at October 20, 2023. The Company utilizes these credit facilities and cash flows from operations to provide funds for both construction and operational expenditures. PNMR also has intercompany loan agreements with each of its subsidiaries. For additional details regarding the Company’s revolving credit facilities see Note 9.

PNMR projects that its consolidated capital requirements, consisting of construction expenditures and dividends, will total $6.5 billion for 2023 - 2027, including amounts expended through September 30, 2023. These construction expenditures include PNM’s capital initiatives for investments in transmission and distribution infrastructure to deliver clean energy, enhance customer satisfaction, and increase grid resilience. Construction expenditures also include investments proposed in PNM’s Grid Modernization Application and TNMP’s investments to support consistent growth in system demand and growing encouragement for infrastructure investments from the Texas legislature to support resiliency.

As discussed in Note 9, in November 2022, PNMR entered into a distribution agreement, pursuant to which the Company may sell, from time to time, up to an aggregate sales price of $200.0 million of its common stock, no par value, through sales agents under the PNMR 2022 ATM Program. During 2023, PNMR entered into forward sales agreements with third-party forward purchasers relating to the sale of 4.4 million shares of common stock, under the PNMR 2022 ATM Program, which is now concluded.

To fund capital spending requirements to meet growth that balances earnings goals, credit metrics and liquidity needs, the Company has entered into a number of other financing arrangements. A complete listing of current financing arrangements is contained in Note 9 and Note 7 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

After considering the effects of these financings and the Company’s short-term liquidity position as of October 20, 2023, the Company has consolidated maturities of long-term and short-term debt aggregating approximately $901.7 million through August 2024. In addition to internal cash generation, the Company anticipates that it will be necessary to obtain additional long-term financing in the form of debt refinancing, new debt issuances, and/or new equity in order to fund its capital requirements during the 2023-2027 period. The Company currently believes that its internal cash generation, existing credit arrangements, and access to public and private capital markets will provide sufficient resources to meet the Company’s capital requirements for at least the next twelve months. As of September 30, 2023 and October 20, 2023, the Company was in compliance with its debt covenants.

RESULTS OF OPERATIONS

The following discussion and analysis should be read in conjunction with the Condensed Consolidated Financial Statements and Notes thereto. Trends and contingencies of a material nature are discussed to the extent known. Refer also to Disclosure Regarding Forward Looking Statements and to Part II, Item 1A. Risk Factors.

A summary of net earnings attributable to PNMR is as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2023		2022		Change		2023		2022		Change
	(In millions, except per share amounts)
Net earnings attributable to PNMR	$	37.7	$	122.4	$	(84.7)	$	138.0	$	153.8	$	(15.8)
Average diluted common and common equivalent shares	86.1		86.1		—		86.2		86.2		—
Net earnings attributable to PNMR per diluted share	$	0.44	$	1.42	$	(0.98)	$	1.60	$	1.78	$	(0.18)

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The components of the change in net earnings attributable to PNMR are:

	Three Months Ended		Nine Months Ended
	September 30, 2023		September 30, 2023
	(In millions)
PNM	$	(89.4)	$	(1.8)
TNMP	8.1		1.7
Corporate and Other	(3.4)		(15.7)
Net change	$	(84.7)	$	(15.8)

Information regarding the factors impacting PNMR’s operating results by segment are set forth below.

Segment Information

The following discussion is based on the segment methodology that PNMR’s management uses for making operating decisions and assessing performance of its various business activities. See Note 2 for more information on PNMR’s operating segments.

PNM

Non-GAAP Financial Measures

PNM defines utility margin as electric operating revenues less cost of energy, which consists primarily of fuel and purchase power costs. PNM believes that utility margin provides a more meaningful basis for evaluating operations than electric operating revenues since substantially all fuel and purchase power costs are offset in revenues as those costs are passed through to customers under PNM’s FPPAC. Utility margin is not a financial measure required to be presented and is considered a non-GAAP measure. PNM does not intend for utility margin to represent any financial measure as defined by GAAP however, the calculation of utility margin, as presented, most closely compares to gross margin as defined by GAAP. Reconciliations between utility margin and gross margin are presented below.

	Three Months Ended September 30,						Nine Months Ended September 30,
	2023		2022		Change		2023		2022		Change
	(In millions)
Gross margin	$	95.7	$	201.6	$	(105.9)	$	356.3	$	421.3	$	(65.0)
Energy production costs	20.4		34.5		(14.1)		68.3		110.5		(42.2)
Transmission and distribution costs	15.3		12.5		2.8		44.0		37.7		6.3
Depreciation and amortization	44.5		45.4		(0.9)		132.3		137.1		(4.8)
Utility margin	$	176.0	$	294.0	$	(118.0)	$	600.9	$	706.7	$	(105.8)

The following table summarizes the operating results for PNM:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2023		2022		Change		2023		2022		Change
	(In millions)
Electric operating revenues	$	350.3	$	597.3	$	(247.0)	$	1,118.7	$	1,312.8	$	(194.1)
Cost of energy	174.4		303.4		(129.0)		517.8		606.1		(88.3)
Utility margin	176.0		294.0		(118.0)		600.9		706.7		(105.8)
Operating expenses	100.7		108.7		(8.0)		305.6		335.2		(29.6)
Depreciation and amortization	44.5		45.4		(0.9)		132.3		137.1		(4.8)
Operating income	30.7		139.9		(109.2)		163.0		234.4		(71.4)
Other income (deductions)	(2.3)		(10.6)		8.3		18.7		(71.2)		89.9
Interest charges	(22.4)		(15.5)		(6.9)		(61.2)		(44.6)		(16.6)
Segment earnings before income taxes	6.1		113.9		(107.8)		120.4		118.6		1.8
Income (taxes) benefit	7.2		(12.1)		19.3		(12.0)		(11.8)		(0.3)
Valencia non-controlling interest	(5.1)		(4.2)		(0.9)		(14.2)		(10.9)		(3.3)
Preferred stock dividend requirements	(0.1)		(0.1)		—		(0.4)		(0.4)		—
Segment earnings	$	8.1	$	97.5	$	(89.4)	$	93.8	$	95.6	$	(1.8)

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The following table shows total GWh sales, including the impacts of weather, by customer class and average number of customers:

	Three Months Ended September 30,				Nine Months Ended September 30,
			Percentage				Percentage
	2023	2022	Change		2023	2022	Change
	(Gigawatt hours, except customers)
Residential	1,082.7	993.0	9.0	%	2,622.7	2,557.4	2.6	%
Commercial	1,121.4	1,089.8	2.9		2,817.6	2,778.8	1.4
Industrial (1)	492.7	462.8	6.5		1,421.5	1,300.0	9.3
Public authority	68.6	66.5	3.2		163.3	165.6	(1.4)
Economy energy service (2)	102.8	137.4	(25.2)		404.5	402.6	0.5
Wholesale energy sales (3)	1,163.9	2,254.1	(48.4)		3,727.1	5,999.9	(37.9)
	4,032.1	5,003.6	(19.4)	%	11,156.7	13,204.3	(15.5)	%
Average retail customers (thousands)	548.4	544.1	0.8	%	547.5	543.1	0.8	%

(1) PNM purchases renewable energy for a large customer under a special service rate on the customer’s behalf and delivers the energy to the customer’s location. PNM charges the customer for the cost of the renewable energy as a direct pass through to the customer and includes the associated GWh in the table above.

(2) PNM purchases energy for a large customer on the customer’s behalf and delivers the energy to the customer’s location through PNM’s transmission system. PNM charges the customer for the cost of the energy as a direct pass through to the customer with only a minor impact in utility margin resulting from providing ancillary services.

(3) Decrease primarily reflects termination of agreements to sell power from SJGS Unit 4 in 2022, including energy related to merchant capacity of 65 MW and the 100 MW hazard sharing agreement with Tri-State.

Operating Results – Three Months Ended September 30, 2023, compared to 2022

The following table summarizes the significant changes to gross margin:

		Three Months Ended September 30, 2023
		Change
Gross margin:		(In millions)
	Utility margin (see below)	$	(118.0)
	Depreciation and amortization (see below)	0.9
	Lower plant maintenance and administrative costs primarily due to the retirement of SJGS, the disposition of PVNGS Unit 1 Leased Interest, and lower costs at Four Corners, partially offset by higher costs at gas fired plants and the remaining interests in PVNGS	13.7
	Higher employee related, outside services, and vegetation management expenses, excluding administrative costs	(2.3)
	Other	(0.2)
	Net Change	$	(105.9)

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The following table summarizes the significant changes to utility margin:

		Three Months Ended September 30, 2023
		Change
Utility margin:		(In millions)
	Retail customer usage/load – Weather normalized retail KWh sales increased 0.8% for residential customers, partially offset by decreased sales to commercial customers of 1.6% and industrial customers of 6.4%	$	1.6
	Weather – Hotter weather in the third quarter of 2023; cooling degree days were 26.7% higher in 2023	14.1
	Transmission – Decrease in revenues primarily due to lower market prices in the third quarter of 2023 and the FERC Order 864 settlement (Note 12)	(6.7)
	Unregulated margin – Decreases due to the retirement of SJGS Unit 4 in 2022	(7.9)
	Capacity arrangements - New agreements in 2023, including battery storage	(6.5)
	Rate credits - SJGS abandonment settlement agreement partially offset by NMPRC ordered rate credits in 2022 (Note 12)	(113.8)
	Rate riders and other – Includes renewable energy, FPPCAC, energy efficiency, and transportation electrification riders	1.2
	Net Change	$	(118.0)

The following tables summarize the primary drivers for changes in operating expenses, depreciation and amortization, other income (deductions), interest charges, and income taxes:

		Three Months Ended September 30, 2023
		Change
Operating expenses:		(In millions)
	Lower plant maintenance and administrative costs primarily due to the retirement of SJGS, the disposition of PVNGS Unit 1 Leased Interest, and lower costs at Four Corners, partially offset by higher costs at gas fired plants and the remaining interests in PVNGS	$	(13.6)
	Higher employee related, outside services, and vegetation management expenses	3.2
	Higher regulatory disallowances and restructuring costs	2.9
	Other	(0.5)
	Net Change	$	(8.0)

Depreciation and amortization:
	Increased utility plant in service	$	1.8
	Lower depreciation due to the retirement of SJGS	(2.1)
	Lower depreciation due to the disposition of the PVNGS Unit 1 Leased Interest	(0.7)
	Other	0.1
	Net Change	$	(0.9)

Other income (deductions):
	Increased performance on investment securities in the NDT and coal mine reclamation trusts	$	7.3
	Higher interest income partially offset by higher trust expenses related to investment securities in the NDT, coal mine reclamation and SJGS decommissioning trusts	1.0
	Net Change	$	8.3

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		Three Months Ended September 30, 2023
		Change
Interest charges:		(In millions)
	Higher interest on term loans	$	(2.4)
	Issuance of $200 million SUNs in April 2023	(2.8)
	Higher interest on short-term borrowings	(2.1)
	Higher interest on transmission interconnections and other customer deposit arrangements	(1.4)
	Higher debt AFUDC	2.3
	Other	(0.5)
	Net Change	$	(6.9)

Income (taxes) benefits:
	Lower segment earnings before income taxes	$	27.6
	Lower amortization of federal excess deferred income taxes	(7.0)
	Other	(1.3)
	Net Change	$	19.3

Operating Results – Nine Months Ended September 30, 2023 compared to 2022

The following table summarizes the significant changes to gross margin:

		Nine Months Ended September 30, 2023
		Change
Gross margin:		(In millions)
	Utility margin (see below)	$	(105.8)
	Depreciation and amortization (see below)	4.8
	Lower plant maintenance costs primarily due to the retirement of SJGS, the disposition of the PVNGS Unit 1 Leased Interest, and lower costs at gas fired plants, partially offset by higher costs at Four Corners and the remaining interests in PVNGS	45.2
	Higher employee related, outside services, and vegetation management expenses, excluding administrative costs	(6.9)
	Other	(2.3)
	Net Change	$	(65.0)

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The following table summarizes the significant changes to utility margin:

		Nine Months Ended September 30, 2023
		Change
Utility margin:		(In millions)
	Retail customer usage/load –Weather normalized retail KWh sales decreased 0.2% for residential customers and 4.8% for industrial customers, partially offset by increased sales of 0.1% for commercial customers	$	(1.1)
	Weather – Primarily due to hotter weather in the third quarter of 2023	11.8
	Transmission – Increase in revenues primarily due to higher market prices and higher volumes partially offset by the FERC Order 864 settlement (Note 12)	11.6
	Unregulated margin – Decreases due to the retirement of SJGS Unit 4 in 2022	(10.8)
	Capacity arrangements - New agreements in 2023, including battery storage	(7.9)
	Rate credits - SJGS abandonment settlement agreement partially offset by NMPRC ordered rate credits in 2022 (Note 12)	(113.8)
	Rate riders and other – Includes renewable energy, FPPCAC, energy efficiency, and transportation electrification riders	4.4
	Net Change	$	(105.8)

The following tables summarize the primary drivers for changes in operating expenses, depreciation and amortization, other income (deductions), interest charges, and income taxes:

		Nine Months Ended September 30, 2023
		Change
Operating expenses:		(In millions)
	Lower plant maintenance and administrative costs primarily due to the retirement of SJGS, the disposition of PVNGS Unit 1 Leased Interest, and lower costs at gas fired plants, partially offset by higher costs at Four Corners and the remaining interests in PVNGS	$	(44.8)
	Higher employee related, outside services, and vegetation management expenses	11.6
	Higher regulatory disallowances and restructuring costs	5.2
	Other	(1.6)
	Net Change	$	(29.6)

Depreciation and amortization:
	Increased utility plant in service	$	4.8
	Lower depreciation due to the retirement of SJGS	(8.0)
	Lower depreciation due to the disposition of the PVNGS Unit 1 Leased Interest	(2.1)
	Other	0.5
	Net Change	$	(4.8)

Other income (deductions):
	Increased performance on investment securities in the NDT and coal mine reclamation trusts	$	85.9
	Higher interest income and lower trust expenses related to investment securities in the NDT, coal mine reclamation and SJGS decommissioning trusts	3.9
	Other	0.1
	Net Change	$	89.9

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		Nine Months Ended September 30, 2023
		Change
Interest charges:		(In millions)
	Higher interest on term loans	$	(8.3)
	Higher interest on short-term borrowings	(6.5)
	Issuance of $200 million SUNs in April 2023	(4.8)
	Higher interest on transmission interconnections and other customer deposit arrangements	(2.6)
	Higher debt AFUDC	6.0
	Other	(0.4)
	Net Change	$	(16.6)

Income (taxes) benefits:
	Lower segment earnings before income taxes	$	0.4
	Lower amortization of federal excess deferred income taxes	(0.4)
	Other	(0.3)
	Net Change	$	(0.3)

TNMP

Non-GAAP Financial Measures

TNMP defines utility margin as electric operating revenues less cost of energy, which consists of costs charged by third-party transmission providers. TNMP believes that utility margin provides a more meaningful basis for evaluating operations than electric operating revenues since all third-party transmission costs are passed on to consumers through a transmission cost recovery factor. Utility margin is not a financial measure required to be presented and is considered a non-GAAP measure. TNMP does not intend for utility margin to represent any financial measure as defined by GAAP however, the calculation of utility margin, as presented, most closely compares to gross margin as defined by GAAP.

Reconciliations between utility margin and gross margin are presented below.

	Three Months Ended September 30,						Nine Months Ended September 30,
	2023		2022		Change		2023		2022		Change
	(In millions)
Gross margin	$	81.5	$	67.6	$	13.9	$	189.2	$	172.3	$	16.9
Transmission and distribution costs	9.8		9.0		0.8		28.8		23.5		5.3
Depreciation and amortization	28.4		25.0		3.4		83.7		72.9		10.8
Utility margin	$	119.6	$	101.6	$	18.0	$	301.7	$	268.7	$	33.0

The following table summarizes the operating results for TNMP:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2023		2022		Change		2023		2022		Change
	(In millions)
Electric operating revenues	$	155.5	$	132.6	$	22.9	$	408.3	$	360.9	$	47.4
Cost of energy	36.0		31.0		5.0		106.6		92.2		14.4
Utility margin	119.6		101.6		18.0		301.7		268.7		33.0
Operating expenses	35.1		32.8		2.3		101.3		89.7		11.6
Depreciation and amortization	28.4		25.0		3.4		83.7		72.9		10.8
Operating income	56.2		43.8		12.4		116.7		106.1		10.6
Other income	2.6		2.4		0.2		4.5		5.7		(1.2)
Interest charges	(12.1)		(9.9)		(2.2)		(33.9)		(28.0)		(5.9)
Segment earnings before income taxes	46.7		36.4		10.3		87.2		83.8		3.4
Income (taxes)	(7.2)		(4.9)		(2.3)		(13.1)		(11.3)		(1.8)
Segment earnings	$	39.5	$	31.4	$	8.1	$	74.2	$	72.5	$	1.7

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The following table shows total sales, including the impacts of weather, by retail tariff consumer class and average number of consumers:

	Three Months Ended September 30,				Nine Months Ended September 30,
			Percentage				Percentage
	2023	2022	Change		2023	2022	Change
Volumetric load (1) (GWh)	1,219.9	1,107.5	10.1	%	2,655.9	2,688.7	(1.2)	%
Demand-based load (2) (MW)	7,386.4	5,961.5	23.9	%	22,675.5	17,749.4	27.8	%
Average retail consumers (thousands) (3)	272.8	268.5	1.6	%	271.2	267.3	1.5	%

(1) Volumetric load consumers are billed on KWh usage.

(2) Demand-based load includes consumers billed on monthly KW peak and also includes retail transmission customers that are primarily billed under TNMP’s rate riders.

(3) TNMP provides transmission and distribution services to REPs that provide electric service to their customers in TNMP’s service territories. The number of consumers above represents the customers of these REPs. Under TECA, consumers in Texas have the ability to choose any REP to provide energy.

Operating Results – Three Months Ended September 30, 2023, compared to 2022

The following table summarizes the significant changes to gross margin:

		Three Months Ended September 30, 2023
		Change
Gross margin:		(In millions)
	Utility margin (see below)	$	18.0
	Depreciation and amortization (see below)	(3.4)
	Higher employee related, outside services expenses, and vegetation management expenses, excluding administrative costs	(0.9)
	Other	0.2
	Net Change	$	13.9

The following table summarizes the significant changes to utility margin:

		Three Months Ended September 30, 2023
		Change
Utility margin:		(In millions)
	Transmission rate relief – Transmission cost of service rate increases in September 2022, May 2023 and September 2023	$	6.1
	Distribution rate relief – Distribution cost of service rate increases in September 2022 and September 2023	4.4
	Volumetric-based consumer usage/load – Weather normalized KWh sales decreased 1.8%; the number of volumetric consumers increased 1.6%	(0.1)
	Demand-based consumer usage/load – Weather normalized demand-based MW sales for large commercial and industrial consumers excluding retail transmission consumers increased 5.0%, offset by lower prices	(0.1)
	Weather – Warmer weather in the third quarter of 2023; cooling degree days were 15.8% higher in 2023	4.2
	Rate Riders and other– Impacts of rate riders, including the transmission cost recovery factor, energy efficiency rider, and rate case expense rider, which are partially offset in operating expenses	3.5
	Net Change	$	18.0

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The following tables summarize the primary drivers for changes in operating expenses, depreciation and amortization, other income (deductions), interest charges, and income taxes:

		Three Months Ended September 30, 2023
		Change
Operating expenses:		(In millions)
	Higher employee related, outside services expenses, and vegetation management expenses	$	1.9
	Higher capitalization of administrative and general expenses due to higher construction expenditures	(0.5)
	Higher property taxes primarily due to increased utility plant in service	0.3
	Higher energy efficiency expense and lower rate case amortization which are offset in utility margin	0.1
	Other	0.5
	Net Change	$	2.3

Depreciation and amortization:
	Increased utility plant in service	$	3.4
	Net Change	$	3.4

Other income (deductions):
	Higher equity AFUDC	$	0.5
	Other	(0.3)
	Net Change	$	0.2

Interest charges:
	Issuance of first mortgage bonds in 2023	$	(2.2)
	Issuance of first mortgage bonds in 2022	(0.3)
	Higher debt AFUDC	0.3
	Net Change	$	(2.2)

Income (taxes) benefits:
	Higher segment earnings before income taxes	$	(2.2)
	Lower amortization of excess deferred income taxes	(0.1)
	Net Change	$	(2.3)

Operating Results – Nine Months Ended September 30, 2023 compared to 2022

The following table summarizes the significant changes to gross margin:

		Nine Months Ended September 30, 2023
		Change
Gross margin:		(In millions)
	Utility margin (see below)	$	33.0
	Depreciation and amortization (see below)	(10.8)
	Higher employee related, outside services expenses, and vegetation management expenses, excluding administrative costs	(5.2)
	Other	(0.1)
	Net Change	$	16.9

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The following table summarizes the significant changes to utility margin:

		Nine Months Ended September 30, 2023
		Change
Utility margin:		(In millions)
	Transmission rate relief/load – Transmission cost of service rate increases in March 2022, September 2022, May 2023, and September 2023	$	16.5
	Distribution rate relief – Distribution cost of service rate increase in September 2022 and September 2023	8.3
	Volumetric-based consumer usage/load – Weather normalized KWh sales decreased 0.8%; the number of volumetric consumers increased 1.5%	(0.4)
	Demand-based consumer usage/load – Weather normalized demand-based MW sales for large commercial and industrial consumers excluding retail transmission consumers increased 18.7% primarily due to new cryptocurrency loads	8.1
	Weather – Milder weather in the first and second quarters of 2023 partially offset by warmer weather in the third quarter of 2023	(0.7)
	Rate Riders and other– Impacts of rate riders, including the transmission cost recovery factor, energy efficiency rider, and rate case expense rider, which are partially offset in operating expenses and depreciation and amortization	1.2
	Net Change	$	33.0

The following tables summarize the primary drivers for changes in operating expenses, depreciation and amortization, other income (deductions), interest charges, and income taxes:

		Nine Months Ended September 30, 2023
		Change
Operating expenses:		(In millions)
	Higher employee related, outside services expenses, and vegetation management expenses	$	8.4
	Higher property taxes due to increased utility plant in service	1.2
	Lower capitalization of administrative and general expenses due to lower construction expenditures	1.2
	Other	0.8
	Net Change	$	11.6

Depreciation and amortization:
	Increased utility plant in service	$	10.7
	Other	0.1
	Net Change	$	10.8

Other income (deductions):
	AMS Reconciliation carrying charges	$	(1.1)
	Higher equity AFUDC	0.4
	Other	(0.5)
	Net Change	$	(1.2)

Interest charges:
	Issuance of first mortgage bonds in 2023	$	(3.3)
	Issuance of first mortgage bonds in 2022	(3.1)
	Higher interest on revolving short-term borrowings	(1.4)
	Higher debt AFUDC	2.0
	Other	(0.1)
	Net Change	$	(5.9)

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		Nine Months Ended September 30, 2023
		Change
Income (taxes) benefits:		(In millions)
	Higher segment earnings before income taxes	$	(0.7)
	Lower amortization of excess deferred federal income taxes	(1.2)
	Other	0.1
	Net Change	$	(1.8)

Corporate and Other

The table below summarizes the operating results for Corporate and Other:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2023		2022		Change		2023		2022		Change
	(In millions)
Electric operating revenues	$	—	$	—	$	—	$	—	$	—	$	—
Cost of energy	—		—		—		—		—		—
Utility margin	—		—		—		—		—		—
Operating expenses	(7.1)		(5.3)		(1.8)		(19.8)		(15.8)		(4.0)
Depreciation and amortization	7.3		6.2		1.1		21.4		19.1		2.3
Operating (loss)	(0.2)		(1.0)		0.8		(1.6)		(3.2)		1.6
Other income	0.5		0.1		0.4		0.8		0.2		0.6
Interest charges	(15.4)		(9.2)		(6.2)		(41.5)		(17.4)		(24.1)
Segment (loss) before income taxes	(15.1)		(10.1)		(5.0)		(42.3)		(20.4)		(21.9)
Income (taxes) benefit	5.2		3.6		1.6		12.4		6.0		6.4
Segment (loss)	$	(9.9)	$	(6.5)	$	(3.4)	$	(30.0)	$	(14.3)	$	(15.7)

Corporate and Other operating expenses shown above are net of amounts allocated to PNM and TNMP under shared services agreements. The amounts allocated include certain expenses shown as depreciation and amortization and other income (deductions) in the table above. The change in operating expense for the three and nine months ended September 30, 2023 include decreases of $0.2 million and $0.9 million in costs related to the Merger that were not allocated to PNM or TNMP. Substantially all depreciation and amortization expense is offset in operating expenses as a result of allocation of these costs to other business segments.

Operating Results – Three Months Ended September 30, 2023 compared to 2022

The following tables summarize the primary drivers for changes in other income (deductions), interest charges, and income taxes:

		Three Months Ended September 30, 2023
		Change
Other income (deductions):		(In millions)
	Higher equity method investment income from NMRD	$	0.6
	Other	(0.2)
	Net Change	$	0.4

Interest charges:
	Higher interest on term loans	$	(3.8)
	Higher interest on short-term borrowings	(2.4)
	Net Change	$	(6.2)

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		Three Months Ended September 30, 2023
		Change
Income (taxes) benefits:		(In millions)
	Higher segment loss before income taxes	$	1.3
	Impact of difference in effective tax rates used by PNMR and its subsidiaries in the calculation of income taxes in interim periods	0.2
	Other	0.1
	Net Change	$	1.6

Operating Results – Nine Months Ended September 30, 2023 compared to 2022

The following tables summarize the primary drivers for changes in other income (deductions), interest charges, and income taxes:

		Nine Months Ended September 30, 2023
		Change
Other income (deductions):		(In millions)
	Higher equity method investment income from NMRD	$	0.7
	Other	(0.1)
	Net Change	$	0.6

Interest charges:
	Higher interest on term loans	$	(19.4)
	Higher interest on short-term borrowings	(4.8)
	Other	0.1
	Net Change	$	(24.1)

Income (taxes) benefits:
	Higher segment loss before income taxes	$	5.6
	Impact of difference in effective tax rates used by PNMR and its subsidiaries in the calculation of income taxes in interim periods	0.4
	Other	0.4
	Net Change	$	6.4

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LIQUIDITY AND CAPITAL RESOURCES

Statements of Cash Flows

The changes in PNMR’s cash flows for the nine months ended September 30, 2023, compared to September 30, 2022, are summarized as follows:

	Nine Months Ended September 30,
	2023		2022		Change
	(In millions)
Net cash flows from (used in):
Operating activities	$	412.6	$	427.5	$	(14.9)
Investing activities	(811.9)		(711.4)		(100.5)
Financing activities	403.0		288.4		114.6
Net change in cash and cash equivalents	$	3.7	$	4.5	$	(0.8)

Cash Flows from Operating Activities

Changes in PNMR’s cash flow from operating activities result from net earnings, adjusted for items impacting earnings that do not provide or use cash. See Results of Operations above. Certain changes in assets and liabilities resulting from normal operations, including the effects of the seasonal nature of the Company’s operations, also impact operating cash flows.

Cash Flows from Investing Activities

The changes in PNMR’s cash flows used in investing activities relate primarily to changes in utility plant additions. Cash flows from investing activities include purchases and sales of investment securities in the NDT, SJGS decommissioning trust, and coal mine reclamation trusts as well as activity related to NMRD.

Major components of PNMR’s cash inflows and (outflows) from investing activities are shown below:

	Nine Months Ended September 30,
	2023		2022		Change
Cash (Outflows) for Utility Plant Additions	(In millions)
PNM:
Generation	$	(60.4)	$	(58.0)	$	(2.4)
Transmission and distribution	(349.6)		(247.8)		(101.8)
Nuclear fuel	(14.3)		(16.6)		2.3
	(424.3)		(322.4)		(101.9)
TNMP:
Transmission	(91.0)		(143.2)		52.2
Distribution	(252.2)		(216.2)		(36.0)
	(343.2)		(359.4)		16.2
Corporate and Other:
Computer hardware and software	(40.4)		(21.1)		(19.3)
	(807.9)		(702.9)		(105.0)
Other Cash Flows from Investing Activities
Proceeds from sale of plant assets (Note 13)	$	32.7	$	—	$	32.7
Proceeds from sales of investment securities	412.6		323.3		89.3
Purchases of investment securities	(423.5)		(332.5)		(91.0)
Investments in NMRD	(25.8)		—		(25.8)
Other, net	—		0.7		(0.7)
	(4.0)		(8.5)		4.5
Net cash flows used in investing activities	$	(811.9)	$	(711.4)	$	(100.5)

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Cash Flows from Financing Activities

The changes in PNMR’s cash flows from financing activities include:

•Short-term borrowings increased $173.5 million in 2023 compared to a decrease of $2.5 million in 2022, resulting in a net increase in cash flows from financing activities of $176.0 million

•In 2023, PNM issued $200.0 million aggregate principal amount of the PNM 2023 SUNs and used the proceeds to repay borrowings under the PNM Revolving Credit Facility and the PNM New Mexico Credit Facility, to fund capital expenditures, and for other corporate purposes

•In 2023, TNMP issued $185.0 million aggregate principal amount of TNMP 2023 Bonds and used the proceeds to repay borrowings under the TNMP Revolving Credit Facility, to fund capital expenditures, and for other corporate purposes

•In 2023, PNMR borrowed $500.0 million under the PNMR 2023 Term Loan and used the proceeds to repay borrowings under the PNMR 2021 Delayed Draw Term Loan

•In 2023, PNM remarketed $130.0 million of outstanding PCRBs to new investors

•In 2023, PNM repaid $55.0 million of 3.15% SUNs that were due in May 2023

Financing Activities

See Note 7 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K and Note 9 for additional information concerning the Company’s financing activities. PNM must obtain NMPRC approval for any financing transaction having a maturity of more than 18 months. In addition, PNM files its annual informational financing filing and short-term financing plan with the NMPRC.

The Company’s ability to access the credit and capital markets at a reasonable cost is largely dependent upon its:

•Ability to earn a fair return on equity

•Results of operations

•Ability to obtain required regulatory approvals

•Conditions in the financial markets

•Credit ratings

The Company is closely monitoring the impacts on the capital markets of other macroeconomic conditions, including actions by the Federal Reserve to address inflationary concerns or other market conditions, and geopolitical activity. The Company currently believes it has adequate liquidity but cannot predict the effects of any of these macroeconomic conditions on the global, national, or local economy, including the Company’s ability to access capital in the financial markets, or on the Company’s financial position, results of operations, and cash flows.

Each of the Company’s revolving credit facilities and term loans contain a single financial covenant that requires the maintenance of a debt-to-capitalization ratio. For the PNMR agreements, this ratio must be maintained at less than or equal to 70%, and for the PNM and TNMP agreements, this ratio must be maintained at less than or equal to 65%. The Company’s revolving credit facilities, term loans, and other debt agreements generally also contain customary covenants, events of default, cross-default provisions, and change-of-control provisions. The Company is in compliance with its debt covenants.

On June 30, 2023, PNMR entered into the $500.0 million PNMR 2023 Term Loan. The PNMR 2023 Term Loan matures on June 30, 2026 and bears interest at a variable rate, which was 6.77% at September 30, 2023. The proceeds were used to prepay an equal amount of the PNMR 2021 Delayed Draw Term Loan, without penalty.

At December 31, 2022, PNM had $130.0 million of 1.10% PCRBs outstanding with a mandatory remarketing date of June 1, 2023. On June 1, 2023, PNM remarketed the $130.0 million to new investors at 3.90% with a mandatory tender date of June 1, 2028.

At December 31, 2022, PNM had $55.0 million aggregate principal amount of its 3.15% SUNs outstanding due May 2023. On May 15, 2023, PNM repaid the $55.0 million 3.15% SUNs.

On April 28, 2023, PNM entered into the PNM 2023 Note Purchase Agreement for the sale and issuance of $200.0 million aggregate principal amount of two series of SUNs. PNM issued $150.0 million of the PNM 2023 SUNs at 5.51%, due April 28, 2035, and another $50.0 million at 5.92%, due April 28, 2053. Proceeds from the PNM 2023 SUNs were used to repay borrowings under the PNM Revolving Credit Facility and the PNM New Mexico Credit Facility, for funding of capital expenditures, and for general corporate purposes.

On April 28, 2023, TNMP entered into the TNMP 2023 Bond Purchase Agreement for the sale of $185.0 million aggregate principal amount of two series of TNMP first mortgage bonds. TNMP issued the first series of $130.0 million on

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April 28, 2023, at a 5.01% interest rate, due April 28, 2033. The second series of $55.0 million was issued on July 28, 2023, at a 5.47% interest rate, due July 28, 2053. The proceeds were used to repay borrowings under the TNMP Revolving Credit Facility, for funding of capital expenditures, and for other corporate purposes.

In November 2022, PNMR entered into the PNMR 2022 ATM Program. During 2023, PNMR entered into forward sales agreements with third-party forward purchasers relating to the sale of 4.4 million shares of common stock, under the PNMR 2022 ATM Program. The average initial forward sale prices are subject to adjustments based on a net interest rate factor and by future dividends paid on PNMR common stock. PNMR did not initially receive any proceeds upon the execution of these agreements and, except in certain specified circumstances, has the option to elect physical, cash, or net share settlement of the forward sale agreements on or before a date that is 12 months from the agreement effective dates. Refer to Note 9 for information regarding the average initial forward sales prices, the Company’s settlement options and related accounting treatment. As of September 30, 2023, all $200.0 million of common stock available for sale under the PNMR 2022 ATM Program has been sold, thus concluding the program, and no shares have been settled under the 2023 Forward Sale Agreements.

PNMR has entered into multiple hedging arrangements, with maturity dates ranging from September 2023 through December 2024. See Note 9 for the related effective dates and terms of each arrangement. All of these hedging agreements establish a fixed rate for the indicated amount of variable rate debt, above which a customary spread is applied, which is subject to change if there is a change in PNMR’s credit rating. These hedge agreements have been accounted for as cash flow hedges.

Capital Requirements

PNMR’s total capital requirements consist of construction expenditures and cash dividend requirements for PNMR common stock and PNM preferred stock.

Key activities in PNMR’s current construction program include:

•Investments in transmission and distribution infrastructure

•Upgrading generation resources and delivering clean energy

•Purchasing nuclear fuel

Projected capital requirements, including amounts expended through September 30, 2023, are:

	2023		2024-2027		Total
	(In millions)
Construction expenditures	$	1,102.2	$	4,751.6	$	5,853.8
Dividends on PNMR common stock	126.2		510.8		637.0
Dividends on PNM preferred stock	0.5		2.1		2.6
Total capital requirements	$	1,228.9	$	5,264.5	$	6,493.4

The construction expenditure estimates are under continuing review and subject to ongoing adjustment, as well as to Board review and approval. The construction expenditures above include amounts for PNM’s capital initiative that includes investments in transmission and distribution infrastructure to deliver clean energy, enhance customer satisfaction, and increase grid resilience. Construction expenditures also include investments proposed in PNM’s Grid Modernization Application and investments supporting consistent growth in system demand and growing encouragement for infrastructure investments from the Texas legislature to support resiliency in TNMP’s service territory. These investments provide for a more resilient, reliable, efficient, and decarbonized electric system. Not included in the table above are incremental expenditures for new customer growth in New Mexico and Texas, and other transmission and renewable energy expansion in New Mexico. The ability of PNMR to pay dividends on its common stock is dependent upon the ability of PNM and TNMP to pay dividends to PNMR. See Note 6 of the Notes to the Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K for a discussion of regulatory and contractual restrictions on the payment of dividends by PNM and TNMP.

During the nine months ended September 30, 2023, PNMR met its capital requirements and construction expenditures through cash generated from operations, as well as its liquidity arrangements and the borrowings discussed in Financing Activities above.

In addition to the capital requirements for construction expenditures and dividends, the Company has long-term debt and term loans that must be paid or refinanced at maturity. PNM has $225.0 million from the PNM 2022 Delayed Draw Term Loan that is due in February 2024 and $198.0 million of PCRBs that mature in June 2024. TNMP has $80.0 million of its 4.03% first mortgage bonds due in July 2024. See Note 9 for additional information about the Company’s long-term debt and equity arrangements. The Company may also enter into new arrangements similar to the existing agreements, borrow under the revolving credit facilities, or issue new long-term debt or equity in the public or private capital markets, or a combination of these sources. The Company has from time to time refinanced or repurchased portions of its outstanding debt before scheduled

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maturity. Depending on market conditions, the Company may refinance other debt issuances or make additional debt repurchases in the future.

Liquidity

PNMR’s liquidity arrangements include the $300.0 million PNMR Revolving Credit Facility, the $400.0 million PNM Revolving Credit Facility, and the $100.0 million TNMP Revolving Credit Facility. In January 2023, both PNMR and PNM exercised a one-year extension option on their respective credit facilities, extending maturity through October 2025; provided that, effective November 1, 2024, the amount of the PNMR Revolving Credit Facility will adjust to $285.0 million and the amount of the PNM Revolving Credit Facility will adjust to $380.0 million because one lender in each facility did not agree to the one-year extension to October 2025. Both credit facilities contain an additional one-year extension option that, if exercised, would extend the maturity through October 2026, subject to approval by a majority of the lenders. PNM also has the $40.0 million PNM New Mexico Credit Facility that matures on May 20, 2026. In January 2023, TNMP exercised a one-year extension option on the TNMP Revolving Credit Facility, extending the maturity to September 23, 2025. The TNMP Revolving Credit Facility contains an additional one-year extension option that, if exercised, would extend the maturity to September 23, 2026, subject to approval by a majority of the lenders. Variable interest rates under the PNMR, PNM, and TNMP revolving credit facilities are based on SOFR. The Company believes the terms and conditions of these facilities are consistent with those of other investment grade revolving credit facilities in the utility industry. The Company expects that it will be able to extend or replace these credit facilities under similar terms and conditions prior to their expirations.

The revolving credit facilities and the PNM New Mexico Credit Facility provide short-term borrowing capacity. The revolving credit facilities also allow letters of credit to be issued. Letters of credit reduce the available capacity under the facilities. The Company utilizes these credit facilities and cash flows from operations to provide funds for both construction and operational expenditures. The Company’s business is seasonal with more revenues and cash flows from operations being generated in the summer months. In general, the Company relies on the credit facilities to be the initial funding source for construction expenditures. Accordingly, borrowings under the facilities may increase over time. Depending on market and other conditions, the Company will periodically issue long-term debt and use the proceeds to reduce the borrowings under the credit facilities or refinance other debt.

Information regarding the range of borrowings for each facility is as follows:

	Three Months Ended September 30, 2023				Nine Months Ended September 30, 2023
Range of Borrowings	Low		High		Low		High
	(In millions)
PNM:
PNM Revolving Credit Facility	$	90.0	$	145.0	$	16.7	$	200.8
PNM New Mexico Credit Facility	20.0		40.0		5.0		40.0
TNMP Revolving Credit Facility	10.1		54.1		9.8		100.0
PNMR Revolving Credit Facility	139.5		200.9		9.4		200.9

At September 30, 2023, the weighted average interest rates were 6.68% for the PNM Revolving Credit Facility, 6.67% for the PNM New Mexico Credit Facility, 6.29% for the TNMP Revolving Credit Facility and 6.92% for the PNMR Revolving Credit Facility.

The Company currently believes that its capital requirements for at least the next twelve months can be met through internal cash generation, existing, extended, or new credit arrangements, and access to public and private capital markets as discussed above and in Note 9. The Company anticipates that it will be necessary to obtain additional long-term financing to fund its capital requirements and to balance its capital structure during the 2023-2027 period. This could include new debt and/or equity issuances. To cover the difference in the amounts and timing of internal cash generation and cash requirements, the Company intends to use short-term borrowings under its current and future liquidity arrangements or other short-term loans. Market conditions, such as rising interest rates, may raise the cost of borrowing under the Company’s current and future liquidity arrangements or other variable debt. In addition, if market conditions worsen, the Company may not be able to access the capital markets or renew credit facilities when they expire. Should that occur, the Company would seek to improve cash flows by reducing capital expenditures and exploring other available alternatives.

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As of October 20, 2023, ratings on the Company’s securities were as follows:

	PNMR	PNM	TNMP
S&P
Issuer rating	BBB	BBB	BBB+
Senior secured debt	*	*	A
Senior unsecured debt	BBB-	BBB	*
Preferred stock	*	BB+	*
Moody’s
Issuer rating	Baa3	Baa2	Baa1
Senior secured debt	*	*	A2
Senior unsecured debt	Baa3	Baa2	*
* Not applicable

Investors are cautioned that a security rating is not a recommendation to buy, sell, or hold securities, that each rating is subject to revision or withdrawal at any time by the rating organization, and that each rating should be evaluated independently of any other rating.

A summary of liquidity arrangements as of October 20, 2023, is as follows:

	PNM		TNMP		PNMR Separate		PNMR Consolidated
	(In millions)
Financing capacity:
Revolving Credit Facility	$	400.0	$	100.0	$	300.0	$	800.0
PNM New Mexico Credit Facility	40.0		—		—		40.0
Total financing capacity	440.0		100.0		300.0		840.0
Amounts outstanding as of October 20, 2023:
Revolving Credit Facility	121.7		43.6		193.4		358.7
PNM New Mexico Credit Facility	40.0		—		—		40.0
Letters of credit	—		—		3.1		3.1
Total short-term debt and letters of credit	161.7		43.6		196.5		401.8
Remaining availability as of October 20, 2023	$	278.3	$	56.4	$	103.5	$	438.2
Invested cash as of October 20, 2023	$	—	$	—	$	0.9	$	0.9

In addition to the above, PNMR has $30.3 million of letters of credit issued under the WFB LOC Facility. See Note 9. The above table excludes intercompany debt. As of October 20, 2023, neither PNM nor TNMP had any borrowings from PNMR under their intercompany loan agreements. PNMR Development had $0.1 million in intercompany borrowings from PNMR. PNMR had no intercompany borrowings from PNMR Development. The remaining availability under the revolving credit facilities at any point in time varies based on a number of factors, including the timing of collections of accounts receivables and payments for construction and operating expenditures.

PNMR has an automatic shelf registration that provides for the issuance of various types of debt and equity securities that expires March 2025. PNM has a shelf registration statement for up to $650.0 million of SUNs that expires in May 2026.

PNM expects ETBC I to issue $343.2 million principal amount of Securitized Bonds in the fourth quarter of 2023. See Note 12 for additional information regarding the SJGS Abandonment Application.

Other Material Cash Requirements

PNMR, PNM, and TNMP have contractual obligations for long-term debt, minimum lease payments, coal contracts, coal mine reclamation, nuclear decommissioning, SJGS plant decommissioning, pension and retiree medical contributions, and certain other long-term obligations. See MD&A – Other Material Cash Requirements in the 2022 Annual Reports on Form 10-K.

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Contingent Provisions of Certain Obligations

As discussed in the 2022 Annual Reports on Form 10-K, PNMR, PNM, and TNMP have a number of debt obligations and other contractual commitments that contain contingent provisions. Some of these, if triggered, could affect the liquidity of the Company. In the unlikely event that the contingent requirements were to be triggered, PNMR, PNM, or TNMP could be required to provide security, immediately pay outstanding obligations, or be prevented from drawing on unused capacity under certain credit agreements. The contingent provisions also include contractual increases in the interest rate charged on certain of the Company’s short-term debt obligations in the event of a downgrade in credit ratings. The Company believes its financing arrangements are sufficient to meet the requirements of the contingent provisions. No conditions have occurred that would result in any of the above contingent provisions being implemented.

Capital Structure

The capitalization tables below include the current maturities of long-term debt, but do not include short-term debt and do not include lease obligations as debt.

	September 30, 2023		December 31, 2022
PNMR
PNMR common equity	33.6	%	34.9	%
Preferred stock of subsidiary	0.2		0.2
Long-term debt	66.2		64.9
Total capitalization	100.0	%	100.0	%
PNM
PNM common equity	48.1	%	48.7	%
Preferred stock	0.3		0.3
Long-term debt	51.6		51.0
Total capitalization	100.0	%	100.0	%
TNMP
Common equity	48.3	%	50.6	%
Long-term debt	51.7		49.4
Total capitalization	100.0	%	100.0	%

OTHER ISSUES FACING THE COMPANY

Climate Change Issues

Background

For the past several years, management has identified multiple risks and opportunities related to climate change, including potential environmental regulation, technological innovation, and availability of fuel and water for operations, as among the most significant risks facing the Company. Accordingly, these risks are overseen by the Board in order to facilitate more integrated risk and strategy oversight and planning. Board oversight includes understanding the various challenges and opportunities presented by these risks, including the financial consequences that might result from enacted and potential federal and/or state regulation of GHG; plans to mitigate these risks; and the impacts these risks may have on the Company’s strategy. In addition, the Board approves certain procurements of grid modernization technologies and replacement resources.

Management is also responsible for assessing significant risks, developing and executing appropriate responses, and reporting to the Board on the status of risk activities. For example, management periodically updates the Board on the implementation of corporate environmental policy, and the Company’s environmental management systems, including the promotion of energy efficiency programs, and the use of renewable resources.  The Board is also informed of the Company’s practices and procedures to assess the impacts of operations on the environment. The Board considers issues associated with climate change, the Company’s GHG exposures, and the financial consequences that might result from enacted and potential federal and/or state regulation of GHG. Management has published, with Board oversight, a Climate Change Report available at http://www.pnmresources.com/about-us/sustainability-portal.aspx, that details the Company’s efforts to transition to an emissions-free generating portfolio by 2040.

As part of management’s continuing effort to monitor climate-related risks and assess opportunities, the Company has advanced its understanding of climate change by participating in the “2 Degree Scenario” planning by participating in the Electric Power Research Institute (“EPRI”) Understanding Climate Scenarios & Goal Setting Activities program. The program focused on characterizing and analyzing the relationship of individual electric utility company’s carbon emissions and global temperature goals. Activities include analyzing the scientific understanding of global emissions pathways that are consistent

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with limiting global warming and providing insight to assist companies in developing approaches to climate scenario planning. As PNM expands its sustainability efforts, EPRI’s environmental and climate analysis programs have also been useful in gaining a better understanding of energy and environmental policy and regulations, advanced clean energy technologies, decarbonization trends and climate impacts. In 2022, PNM joined EPRI’s Climate READi program which is a strategic initiative convening a global collaborative of electric utilities, thought leaders, scientific researchers and other key stakeholders to strengthen the power sector’s collective approach to managing climate risk to the power system. The program is a three-year initiative, through work across three concurrent workstreams, and PNM will benefit from the development of a first-of-its-kind comprehensive framework for managing physical climate risk and investment prioritization.

The Company cannot anticipate or predict the potential long-term effects of climate change or climate change related regulation on its results of operations, financial position, or cash flows.

Greenhouse Gas Emissions Exposures

In 2022, GHG associated with PNM’s interests in its fossil-fueled generating plants included approximately 4.8 million metric tons of CO2, which comprises the vast majority of PNM’s GHG.

As of September 30, 2023, approximately 43% of PNM’s generating capacity, including resources owned, leased, and under PPAs, all of which is located within the U.S., consisted of coal or gas-fired generation that produces GHG and reflects the retirement of SJGS. As PNM shifts its generation to cleaner energy resources the Company’s output of GHG continues to decrease. Many factors affect the amount of GHG emitted, including total electricity sales, plant performance, economic dispatch, and the availability of renewable resources. For example, wind generation performance from PNM’s largest single renewable energy resource, New Mexico Wind, varies each year as a result of highly seasonal wind patterns and annual wind resource variability. Similarly, if PVNGS experienced prolonged outages or if PNM’s entitlement from PVNGS were reduced, PNM might be required to utilize other power supply resources such as gas-fired generation, which could increase GHG.

PNM has several programs underway to reduce or offset GHG from its generation resource portfolio, thereby reducing its exposure to climate change regulation. PNM shutdown SJGS Units 2 and 3 as part of its strategy to address the regional haze requirements of the CAA. The shutdown of SJGS Units 2 and 3 resulted in a reduction of GHG for the entire station of approximately 54% for 2018, reflecting a reduction of 32% of GHG from the Company’s owned interests in SJGS, below 2005 levels. On June 30, 2022, SJGS Unit 1 shut down and on September 30, 2022, SJGS Unit 4 ceased operations. In addition, PNM filed the Four Corners Abandonment Application with the NMPRC for approval to sell its ownership interest in Four Corners by the end of 2024, although the NMPRC denied PNM’s application in 2021. The Company is still determining next steps. See additional discussion of the SJGS and Four Corners Abandonment in Note 12. Retiring PNM’s share of SJGS in 2022 resulted in a GHG reduction from 2021 levels of 67% and exiting participation in Four Corners would result in a total reduction of approximately 88% of PNM’s GHG emissions based upon 2021 GHG emissions from generation.

As of September 30, 2023, PNM owns 158 MW of solar facilities in commercial operation. In addition, PNM purchases renewable power under long-term PPAs to serve New Mexico retail customers, including the Meta data center located in PNM’s service territory. At September 30, 2023, renewable energy procured under these agreements from wind, solar-PV, geothermal facilities and battery storage facilities aggregated to 658 MW, 280 MW, 11 MW, and 170 MW. These agreements currently have expiration dates beginning in January 2035 and extending through May 2047. The NMPRC has approved PNM’s request to enter into additional PPAs for renewable energy for an additional 1,040 MW of energy from solar-PV facilities combined with 450 MW of battery storage agreements with an anticipated 350 MW of solar expected to come online in 2023. The entire portfolio of replacement resources approved by the NMPRC in PNM’s SJGS Abandonment Application includes replacement of SJGS capacity with the procurement of 550 MW of solar PPAs combined with 270 MW of battery storage agreements. The PVNGS Leased Interest Abandonment Application approved by the NMPRC for replacement of 114 MW of PVNGS capacity and to ensure system reliability and load needs are met includes procurement of 300 MW of solar PPA combined with 300 MW of battery storage agreements. In addition, the NMPRC issued an order that will allow PNM to service the Meta data center for an additional 190 MW of solar PPA combined with 50 MW of battery storage with an operational date in 2024. Most recently, On July 24, 2023, PNM filed an application with the NMPRC for approval to service the Meta data center for an additional 140 MW of solar PPA combined with 50 MW of battery storage expected to be operational in 2025. Approval of these renewable energy and battery resources should further reduce exposure to GHG emissions risk. These estimates are subject to change due to underlying variables, including changes in PNM’s generation portfolio, supplier’s ability to meet contractual in-service dates and complex relationships between several factors. See additional discussion of these resources in Notes 11 and 12.

PNM also has a customer distributed solar generation program that represented 273.9 MW at September 30, 2023. PNM’s distributed solar programs will generate an estimated 523.2 GWh of emission-free solar energy available this year to offset PNM’s annual production from fossil-fueled electricity generation. Under the Community Solar Act PNM will receive 125 MW of capacity to provide customers the option of accessing solar energy. PNM has offered its customers a comprehensive portfolio of energy efficiency and load management programs since 2007. PNM’s cumulative savings from these programs was approximately 6,686 GWh of electricity through 2022. Over the next 20 years, PNM projects energy efficiency and load management programs will provide the equivalent of approximately 1,155 GWh of electricity savings,

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which will avoid an estimated 1.0 million metric tons of CO2 based upon projected emissions from PNM’s system-wide resources. These estimates are subject to change because of the uncertainty of many of the underlying variables, including changes in PNM’s generation portfolio, demand for electricity, energy efficiency, and complex relationships between those variables.

Because of PNM’s dependence on fossil-fueled generation, legislation or regulation that imposes a limit or cost on GHG could impact the cost at which electricity is produced. While PNM expects to recover any such costs through rates, the timing and outcome of proceedings for cost recovery are uncertain. In addition, to the extent that any additional costs are recovered through rates, customers may reduce their usage, relocate facilities to other areas with lower energy costs, or take other actions that ultimately could adversely impact PNM.

Other Climate Change Risks

PNM’s generating stations are located in the arid southwest. Access to water for cooling for some of these facilities is critical to continued operations. Forecasts for the impacts of climate change on water supply in the southwest range from reduced precipitation to changes in the timing of precipitation. In either case, PNM’s generating facilities requiring water for cooling will need to mitigate the impacts of climate change through adaptive measures. Current measures employed by PNM generating stations include the use of sustainable, less variable groundwater supplies, and investments in technologies such as air cooling and cooling water recycling. These types of actions will continue to be important to sustain operations.

PNM’s service areas occasionally experience periodic high winds and severe thunderstorms. TNMP has operations in the Gulf Coast area of Texas, which experiences periodic hurricanes and other extreme weather conditions. In addition to potentially causing physical damage to Company-owned facilities, which disrupts the ability to transmit and/or distribute energy, weather and other events of nature can temporarily reduce customers’ usage and demand for energy. In addition, other events influenced by climate change, such as wildfires, could disrupt Company operations or result in third-party claims against the Company. PNM has enhanced its wildfire prevention efforts and maintains a wildfire mitigation plan; however, PNM remains at risk for wildfires outside of its control and the resulting impacts in its service areas.

EPA Regulation

In 2007, the US Supreme Court held that EPA has the authority to regulate GHG under the CAA.  This decision heightened the importance of this issue for the energy industry.  In 2009, EPA released its endangerment finding for GHG from new motor vehicles, stating that the atmospheric concentrations of six key greenhouse gases (CO2, methane, nitrous oxides, hydrofluorocarbons, perfluorocarbons, and sulfur hexafluoride) endanger the public health and welfare of current and future generations. In 2010, EPA released the final Prevention of Significant Deterioration (“PSD”) and Title V Greenhouse Gas Tailoring Rule to address GHG from stationary sources under the CAA permitting programs. The purpose of the rule was to “tailor” the applicability of two programs, the PSD construction permit and Title V operating permit programs, to avoid impacting millions of small GHG emitters. On June 23, 2014, the US Supreme Court found EPA lacked authority to “tailor” the CAA’s unambiguous numerical thresholds of 100 or 250 tons per year, and thus held EPA may not require a source to obtain a PSD permit solely on the basis of its potential GHG. However, the court upheld EPA’s authority to apply the PSD program for GHG to “anyway” sources - those sources that are required to comply with the PSD program for other non-GHG pollutants.

In 2013, then President Obama announced his Climate Action Plan, which outlined how his administration planned to cut GHG in the U.S., prepare the country for the impacts of climate change, and lead international efforts to combat and prepare for global warming. The plan proposed actions that would lead to the reduction of GHG by 17% below 2005 levels by 2020.

In 2015, EPA responded to the Climate Action Plan by issuing (1) the Carbon Pollution Standards for new, modified, and reconstructed power plants (under Section 111(b)); and (2) the Clean Power Plan for existing power plants (under Section 111(d)).

EPA’s Carbon Pollution Standards for new sources (those constructed after January 8, 2014) established separate standards for gas and coal-fired units deemed achievable through the application of what EPA determined to be the BSER demonstrated for each type of unit efficient natural gas combined cycle technology for gas units, and partial carbon capture and sequestration for coal units. The Clean Power Plan established numeric “emission standards” for existing electric generating units based on emission reduction opportunities that EPA deemed achievable using technical assumptions for three “building blocks”: efficiency improvements at coal-fired EGUs, displacement of affected EGUs with renewable energy, and displacement of coal-fired generation with natural gas-fired generation.

Multiple states, utilities, and trade groups filed petitions for review in the DC Circuit to challenge both the Carbon Pollution Standards for new sources and the Clean Power Plan for existing sources in separate cases, and the challengers successfully petitioned the US Supreme Court for a stay of the Clean Power Plan. However, before the DC Circuit could issue an opinion regarding either the Carbon Pollution Standards or the Clean Power Plan, President Trump took office and his administration asked the court to hold both cases in abeyance while the rules were re-evaluated, which the court granted.

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In 2019, EPA repealed the Clean Power Plan, promulgated the ACE Rule, and revised the implementing regulations for all emission guidelines issued under CAA Section 111(d). EPA set the BSER for existing coal-fired power plants as heat rate efficiency improvements based on a range of “candidate technologies” to be applied inside the fence-line of an individual facility. The ACE Rule was also challenged, and on January 19, 2021, the DC Circuit issued an opinion in American Lung Association and American Public Health Association v. EPA, et al. vacating the ACE Rule. While the D.C. Circuit rejected the ACE Rule, it did not reinstate the Clean Power Plan. Rather, the DC Circuit granted an EPA motion asking the court to withhold issuance of the mandate with respect to the repeal of the Clean Power Plan until EPA responds to the court’s remand in a new rulemaking action.

On October 29, 2021, the US Supreme Court granted four petitions for certiorari seeking review of the DC Circuit’s decision vacating the ACE Rule and the repeal of the Clean Power Plan. The Court held that the “generation shifting” approach in the Clean Power Plan exceeded the powers granted to EPA by Congress, though the Court did not address the related issue of whether Section 111 of the CAA only authorizes EPA to require measures that can be implemented entirely within the fence line at an individual source. Of broader significance in administrative law, the Court also expressly invoked the major question doctrine as a basis for rejecting EPA’s statutory interpretation. The basic principle of the major question doctrine is that, if an agency seeks to decide an issue of “vast economic or political significance,” its action must be supported by clear statutory authorization. In cases where there is no authority, courts need not defer to the agency’s statutory interpretation. The decision sets legal precedent for future rulemakings by EPA and other federal regulatory agencies whereby the agency’s authority may be limited based upon similar reasoning.

On May 23, 2023, EPA published in the Federal Register proposed regulatory actions under CAA sections 111(b) and (d) to reduce GHGs from fossil-fueled EGUs. The proposed regulations cover: (1) New natural gas-based EGUs under section 111(b); (2) Existing large and frequently operated natural gas-based EGUs under section 111(d); and (3) Existing coal-based EGUs under section 111(d). Standards of performance for existing coal EGUs will be based on two technologies depending on retirement date: CCS or co-firing gas in lieu of coal. For gas-based EGUs, the standards will be based on CCS or the use of green hydrogen in lieu of natural gas. States will be required to develop SIPs to EPA that provide for the establishment, implementation and enforcement of these standards as they apply to existing sources. States may take into account remaining useful life and other factors when establishing the standards. EPA is proposing that existing coal units must start complying with their gas co-firing or CCS based standards of performance on January 1, 2030, unless they commit to retirement before 2032 (or retirement by 2035 if they also commit to a 20% annual operating limit). Existing combustion turbine units must start complying with their hydrogen or CCS based standards of performance on January 1, 2032, or January 1, 2035, depending on their subcategory, which is based on the control technology selected. The package also includes a proposed repeal of the ACE rule and revisions to the standard for modified and reconstructed units, along with a notice of public rulemaking seeking data and information about setting standards for existing smaller natural gas-based generators. Comments on the rule were due to EPA by August 8, 2023. EPA has indicated it plans to promulgate a final rule by Summer 2024. PNM is reviewing the proposed rule and its potential impacts on the company’s fossil generation resources.

The litigation over the Carbon Pollution Standards remains held in abeyance but could be reactivated by the parties upon a determination by the court that the Biden Administration is unlikely to finalize the revisions proposed in 2018 and that reconsideration of the rule has concluded.

On January 20, 2021, President Biden signed an executive order “Protecting Public Health and the Environment and Restoring Science to Tackle the Climate Crisis,” which instructs agency heads to review all Trump Administration actions for inconsistency with the Biden Administration’s policy “to listen to the science; to improve public health and protect our environment; to ensure access to clean air and water; to limit exposure to dangerous chemicals and pesticides; to hold polluters accountable, including those who disproportionately harm communities of color and low-income communities; to reduce greenhouse gas emissions; to bolster resilience to the impacts of climate change; to restore and expand our national treasures and monuments; and to prioritize both environmental justice and the creation of the well-paying union jobs necessary to deliver on these goals.” Agency heads were directed to consider suspending, revising or rescinding any action that is inconsistent with the stated policy. Within 30 days of the executive order, agency heads submitted to the United States Office of Management and Budget (“OMB”) a preliminary list of those actions being considered for suspension, revision or rescission that would be completed by December 31, 2021, and would be subject to OMB review. Within 90 days of the executive order, agency heads submitted to OMB an updated list of such actions that would be completed by December 31, 2025.

Federal Legislation

President Biden has indicated that climate change is a top priority for his administration. On April 22, 2021, at the Earth Day Summit, as part of the U.S.’s re-entry into the Paris Agreement, President Biden unveiled the goal to cut U.S. emissions by 50% - 52% from 2005 levels by 2030, nearly double the GHG emissions reduction target set by the Obama Administration. The 2030 goal joins President Biden’s other climate goals which include a carbon pollution-free power sector by 2035 and a net-zero emissions economy by no later than 2050.

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On August 16, 2022, President Biden signed the IRA providing nearly $370 billion in climate initiatives over the next decade. The legislation is aimed at reducing carbon emissions by investing in a variety of efforts, including tax credits for renewables, battery storage, and carbon capture.

State and Regional Activity

Pursuant to New Mexico law, each utility must submit an IRP to the NMPRC every three years to evaluate renewable energy, energy efficiency, load management, distributed generation, and conventional supply-side resources on a consistent and comparable basis.  The IRP is required to take into consideration risk and uncertainty of fuel supply, price volatility, and costs of anticipated environmental regulations when evaluating resource options to meet supply needs of the utility’s customers.  The NMPRC requires that New Mexico utilities factor a standardized cost of carbon emissions into their IRPs using prices ranging between $8 and $40 per metric ton of CO2 emitted and escalating these costs by 2.5% per year.  Under the NMPRC rule, each utility must analyze these standardized prices as projected operating costs.  Reflecting the evolving nature of this issue, the NMPRC order states that these prices may be changed in the future to account for additional information or changed circumstances.  Although these prices may not reflect the costs that ultimately will be incurred, PNM is required to use these prices for purposes of its IRP.  In its 2020 filing for Four Corners Abandonment, PNM analyzed resource portfolio plans for scenarios that assumed Four Corners will operate through 2031 and for scenarios that assumed PNM will exit Four Corners at the end of 2024. The key findings of the analysis include that the potential exit of Four Corners in 2024 (subject to regulatory approval) would provide long-term economic benefits to PNM’s customers. See Note 12.

The ETA was signed into New Mexico state law and became effective on June 14, 2019. The ETA, among other things, requires that investor-owned utilities obtain specified percentages of their energy from renewable and carbon-free resources. The ETA requires utilities operating in New Mexico to have renewable portfolios equal to 40% by 2025, 50% by 2030, 80% by 2040, and 100% zero-carbon energy by 2045. Under the ETA provisions, PNM will also be required to meet a generation emission standard of no more than 400 lbs. of CO2 per MWh beginning in 2023 and not more than 200 lbs. per MWh beginning in 2032. PNM takes this requirement into account in its resource planning, and it is expected that the standards will be met with the approved resource retirements and replacements. The ETA provides for a transition from fossil-fuel generating resources to renewable and other carbon-free resources by allowing investor-owned utilities to issue securitized bonds, or “energy transition bonds,” related to the retirement of coal-fired generating facilities to qualified investors. Proceeds provided by energy transition bonds must be used only for purposes related to providing utility service to customers and to pay energy transition costs (as defined by the ETA). These costs may include plant decommissioning and coal mine reclamation costs, and other costs that have not yet been charged to customers or disallowed by the NMPRC or by a court order. Proceeds from energy transition bonds may also be used to fund severances for employees of the retired facility and related coal mine and to promote economic development, education and job training in areas impacted by the retirement of coal-fired facilities. Energy transition bonds must be issued under a NMPRC approved financing order, are secured by “energy transition property”, are non-recourse to the issuing utility, and are repaid by a non-bypassable charge paid by all customers of the issuing utility. See additional discussion of the ETA in Note 11.

The ETA has a significant impact on PNM’s future generation portfolio. In compliance with the ETA, on June 15, 2022, the NMED announced a new rulemaking, Carbon Dioxide Emission Standards for Electric Generating Facilities, to develop carbon emission standards for new and existing electric coal-fired generating facilities. An informal comment period for the draft proposal ran from June 15, 2022 through June 29, 2022. On July 1, 2022, NMED requested the Environmental Improvement Board to docket the matter and set a schedule for pre-filed technical testimony which was filed on September 14, 2022, pre-filed rebuttal testimony which was filed on October 12, 2022, and a public hearing that was held on October 26 and 27, 2022. On October 28, 2022, the rule was passed which adopts new carbon emission standards for new and existing coal-fired power plants.

In 2020, the hearing examiners assigned to the SJGS abandonment and financing proceedings issued recommended decisions recommending approval of PNM’s abandonment application and for the issuance of Securitized Bonds consistent with the requirements of the ETA. On April 1, 2020, the NMPRC approved the hearing examiners’ recommendation to approve PNM’s application to retire its share of SJGS in 2022 and for the issuance of Securitized Bonds. PNM also requested approval of energy transition bonds for the Four Corners Abandonment costs of that transition away from coal-fired generation. On December 15, 2021, the NMPRC denied approval of the Four Corners Abandonment Application and the corresponding request for issuance of securitized financing. PNM cannot predict the full impact of the ETA or the NM Supreme Court decision with respect to the abandonment of Four Corners. See additional discussion of PNM’s SJGS and Four Corners Abandonment Applications in Note 12.

International Accords

The United Nations Framework Convention on Climate Change (“UNFCCC”) is an international environmental treaty that was negotiated at the 1992 United Nations Conference on Environment and Development (informally known as the Earth Summit) and entered into force in March 1994.  The objective of the treaty is to “stabilize greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate system.”  Parties to the

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UNFCCC, including the U.S., have been meeting annually in Conferences of the Parties (“COP”) to assess progress in meeting the objectives of the UNFCCC. 

In 2015, the Paris Agreement was finalized during the 2015 COP. The aim of the Paris Agreement is to limit global temperature rise to two degrees Celsius above pre-industrial levels. The agreement, which was agreed to by approximately 200 parties, requires that countries submit INDCs. INDCs reflect national targets and actions that arise out of national policies and elements relating to oversight, guidance and coordination of actions to reduce emissions by all countries. In November 2014, then President Obama announced the United States’ commitment to reduce GHG, on an economy-wide basis, by 26%-28% from 2005 levels by the year 2025. The U.S. INDC was part of an overall effort by the former administration to have the U.S. achieve economy-wide reductions of around 80% by 2050.  The former administration’s GHG reduction target for the electric utility industry was a key element of its INDC and was based on EPA’s GHG regulations for new, existing, and modified and reconstructed sources at that time. Thresholds for the number of countries necessary to ratify or accede to the Paris Agreement and total global GHG percentage were achieved on October 5, 2016 and the Paris Agreement entered into force on November 4, 2016.  In 2017, President Trump announced that the U.S. would withdraw from the Paris Agreement. As a result of the President’s notice to the United Nations, the U.S. officially withdrew from the Paris Agreement on November 4, 2020. On January 20, 2021, President Biden signed an instrument that will allow the United States to rejoin the Paris Agreement on Climate Change. The instrument was deposited with the United Nations on January 21, 2021, and the United States officially became a party to the Agreement on February 19, 2021.

PNM has calculated GHG reductions that would result from scenarios that includes PNM’s retirement of its share of the SJGS in 2022 and assumes exiting Four Corners in either 2024 or 2031 and PNM has set a goal to have a 100% emissions-free generating portfolio by 2040. While the Company has not conducted an independent 2 Degree Scenario analysis, our commitment to becoming 100% emissions-free by 2040 produces a carbon emissions reduction pathway that tracks within the ranges of climate scenario pathways that are consistent with limiting the global warming average to less than 2 degrees Celsius. In addition, as an investor-owned utility operating in the state of New Mexico, PNM is required to comply with the ETA, which requires utilities’ generating portfolio be 100% carbon-free by 2045. The requirements of the ETA and the Company’s goal compare favorably to the U.S. INDC of 50% to 52% carbon emissions reduction by 2030 and the Biden Administration’s goal of net-zero carbon emissions economy-wide by 2050. On April 1, 2020, the NMPRC approved PNM’s application to retire its share of SJGS in 2022. PNM filed for abandonment of Four Corners on January 8, 2021. See Note 12.

PNM will continue to monitor the United States’ participation in the Paris Agreement and other parties’ involvement in these types of international accords, but the potential impact that such accords may have on the Company cannot be determined at this time.

Assessment of Legislative/Regulatory Impacts

The Company has assessed, and continues to assess, the impacts of climate change legislation and regulation on its business.  This assessment is ongoing and future changes arising out of the legislative or regulatory process could impact the assessment significantly.  PNM’s assessment includes assumptions regarding specific GHG limits; the timing of implementation of these limits; the possibility of a market-based trading program, including the associated costs and the availability of emission credits or allowances; the development of emission reduction and/or renewable energy technologies; and provisions for cost containment. Moreover, the assessment assumes various market reactions such as the price of coal and gas and regional plant economics.  These assumptions are, at best, preliminary and speculative. However, based upon these assumptions, the enactment of climate change legislation or regulation could, among other things, result in significant compliance costs, including large capital expenditures by PNM, and could jeopardize the Company’s reputation as well as the economic viability of certain generating facilities. See Notes 11 and 12.  The ultimate consequences of increased stakeholder scrutiny related to climate change and environmental regulation could lead to increased costs to customers and affect results of operations, cash flows, and financial condition if the incurred costs are not fully recovered through regulated rates. Higher rates could also contribute to reduced usage of electricity.  PNM’s assessment process is evolving and is too speculative at this time for a meaningful prediction of the long-term financial impact.

Transmission Issues

At any given time, FERC has various notices of inquiry and rulemaking dockets related to transmission issues pending. Such actions may lead to changes in FERC administrative rules or ratemaking policy but have no time frame in which action must be taken or a docket closed with no further action. Further, such notices and rulemaking dockets do not apply strictly to PNM but will have industry-wide effects in that they will apply to all FERC-regulated entities. PNM monitors and often submits comments taking a position in such notices and rulemaking dockets or may join in larger group responses. PNM often cannot determine the full impact of a proposed rule and policy change until the final determination is made by FERC and PNM is unable to predict the outcome of these matters.

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Other Matters

See Notes 11 and 12 herein and Notes 16 and 17 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K for a discussion of commitments and contingencies and rate and regulatory matters.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

The preparation of financial statements in accordance with GAAP requires Company management to select and apply accounting policies that best provide the framework to report the results of operations and financial position for PNMR, PNM, and TNMP. The selection and application of those policies requires management to make difficult, subjective, and/or complex judgments concerning reported amounts of revenue and expenses during the reporting period and the reported amounts of assets and liabilities at the date of the financial statements. As a result, there exists the likelihood that materially different amounts would be reported under different conditions or using different assumptions.

As of September 30, 2023, there have been no significant changes with regard to the critical accounting policies disclosed in PNMR’s, PNM’s, and TNMP’s 2022 Annual Reports on Forms 10-K, except as disclosed in Note 13 for lease accounting. The policies disclosed included regulatory accounting, impairments, decommissioning and reclamation costs, pension and other postretirement benefits, accounting for contingencies, and income taxes.

MD&A FOR PNM

RESULTS OF OPERATIONS

PNM operates in only one reportable segment, as presented above in Results of Operations for PNMR.

MD&A FOR TNMP

RESULTS OF OPERATIONS

TNMP operates in only one reportable segment, as presented above in Results of Operations for PNMR.

DISCLOSURE REGARDING FORWARD LOOKING STATEMENTS

Statements made in this filing that relate to future events or PNMR’s, PNM’s, or TNMP’s expectations, projections, estimates, intentions, goals, targets, and strategies are made pursuant to the Private Securities Litigation Reform Act of 1995. Readers are cautioned that all forward-looking statements are based upon current expectations and estimates and apply only as of the date of this report. PNMR, PNM, and TNMP assume no obligation to update this information.

Because actual results may differ materially from those expressed or implied by these forward-looking statements, PNMR, PNM, and TNMP caution readers not to place undue reliance on these statements. PNMR’s, PNM’s, and TNMP’s business, financial condition, cash flows, and operating results are influenced by many factors, which are often beyond their control, that can cause actual results to differ from those expressed or implied by the forward-looking statements. These factors, which are neither presented in order of importance nor weighted, include:

•The expected timing and likelihood of completion of the pending Merger, including the timing, receipt and terms and conditions of any required governmental and regulatory approvals of the pending Merger that could reduce anticipated benefits or cause the parties to abandon the transaction

•The occurrence of any event, change or other circumstances that could give rise to the termination of the Merger Agreement

•The risk that the parties may not be able to satisfy the conditions to the proposed Merger in a timely manner or at all

•The risk that the proposed Merger could have an adverse effect on the ability of PNMR to retain and hire key personnel and maintain relationships with its customers and suppliers, and on its operating results and businesses generally

•The ability of PNM and TNMP to recover costs and earn allowed returns in regulated jurisdictions, including the outcome of the 2024 Rate Change, prudence of PNM’s undepreciated investments in Four Corners and recovery of PNM’s investments and other costs associated with that plant, and the impact on service levels for PNM customers if the ultimate outcomes do not provide for the recovery of costs and operating and capital expenditures, as well as other impacts of federal or state regulatory and judicial actions

•The ability of the Company to successfully forecast and manage its operating and capital expenditures, including aligning expenditures with the revenue levels resulting from the ultimate outcomes of the 2024 Rate Change, other regulatory proceedings, or resulting from potential long-term impacts related to COVID-19

•Uncertainty relating to PNM’s decision to return the leased generating capacity in PVNGS Units 1 and 2 at the expiration of their lease terms in 2023 and 2024, including future regulatory outcomes relating to the ratemaking treatment

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•Uncertainty surrounding the status of PNM’s participation in jointly-owned generation projects, including the changes in PNM’s generation entitlement share for PVNGS following termination of the leases in 2023 and 2024, and the potential exit from Four Corners

•Uncertainty regarding the requirements and related costs of decommissioning power plants and reclamation of coal mines, as well as the ability to recover those costs from customers, including the potential impacts of current and future regulatory proceedings including the 2024 Rate Change

•The impacts on the electricity usage of customers and consumers due to performance of state, regional, and national economies, energy efficiency measures, weather, seasonality, alternative sources of power, advances in technology, and other changes in supply and demand

•Uncertainty related to the potential for regulatory orders, legislation or rulemakings that provide for municipalization of utility assets or public ownership of utility assets, including generation resources, or which would delay or otherwise impact the procurement of necessary resources in a timely manner

•The Company’s ability to maintain its debt and access the financial markets in order to repay or refinance debt as it comes due and for ongoing operations and construction expenditures due to disruptions in the capital or credit markets, actions by ratings agencies, and fluctuations in interest rates resulting from any negative impacts from the 2024 Rate Change or other regulatory proceedings, actions by the Federal Reserve, geopolitical activity, or the entry into the Merger Agreement

•The risks associated with the cost and completion of generation, transmission, distribution, and other projects, including uncertainty related to regulatory approvals and cost recovery, the ability of counterparties to meet their obligations under certain arrangements (including renewable energy resources, and approved PPAs and battery storage agreements related to replacement resources for facilities to be retired or for which the leases will terminate), and supply chain or other outside support services that may be disrupted

•The potential unavailability of cash from PNMR’s subsidiaries due to regulatory, statutory, or contractual restrictions or subsidiary earnings or cash flows

•The performance of generating units, transmission systems, and distribution systems, which could be negatively affected by operational issues, fuel quality and supply chain issues (disruptions), unplanned outages, extreme weather conditions, wildfires, terrorism, cybersecurity breaches, and other catastrophic events, including the costs the Company may incur to repair its facilities and/or the liabilities the Company may incur to third parties in connection with such issues beyond the extent of insurance coverage

•State and federal regulation or legislation relating to environmental matters and renewable energy requirements, the resultant costs of compliance, and other impacts on the operations and economic viability of PNM’s generating plants

•State and federal regulatory, legislative, executive, and judicial decisions and actions on ratemaking, and taxes, including guidance related to the interpretation of changes in tax laws, the Inflation Reduction Act of 2022, the Infrastructure Investment and Jobs Act, and other matters

•Risks related to climate change, including potential financial and reputational risks resulting from increased stakeholder scrutiny related to climate change, litigation, legislative and regulatory efforts to limit GHG, including the impacts of the ETA

•Employee workforce factors, including cost control efforts and issues arising out of collective bargaining agreements and labor negotiations with union employees

•Variability of prices and volatility and liquidity in the wholesale power and natural gas markets, including the impacts to transmission margins

•Changes in price and availability of fuel and water supplies, including the ability of the mine supplying coal to Four Corners and the companies involved in supplying nuclear fuel to provide adequate quantities of fuel

•Regulatory, financial, and operational risks inherent in the operation of nuclear facilities, including spent fuel disposal uncertainties

•The impacts of decreases in the values of marketable securities maintained in trusts to provide for decommissioning, reclamation, pension benefits, and other postretirement benefits, including potential increased volatility resulting from actions by the Federal Reserve to address inflationary concerns, and international developments

•Uncertainty surrounding counterparty performance and credit risk, including the ability of counterparties to supply fuel and perform reclamation activities and impacts to financial support provided to facilitate the coal supply at SJGS

•The effectiveness of risk management regarding commodity transactions and counterparty risk

•The outcome of legal proceedings, including the extent of insurance coverage

•Changes in applicable accounting principles or policies

Any material changes to risk factors occurring after the filing of PNMR’s, PNM’s, and TNMP’s 2022 Annual Reports on Form 10-K are disclosed in Item 1A, Risk Factors, in Part II of this Form 10-Q.

For information about the risks associated with the use of derivative financial instruments, see Item 3. “Quantitative and Qualitative Disclosures About Market Risk.”

SECURITIES ACT DISCLAIMER

Certain securities described or cross-referenced in this report have not been registered under the Securities Act of 1933, as amended, or any state securities laws and may not be reoffered or sold in the United States absent registration or an

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applicable exemption from the registration requirements of the Securities Act of 1933 and applicable state securities laws. This Form 10-Q does not constitute an offer to sell or the solicitation of an offer to buy any securities.

WEBSITES

The PNMR website, www.pnmresources.com, is an important source of Company information. New or updated information for public access is routinely posted.  PNMR encourages analysts, investors, and other interested parties to register on the website to automatically receive Company information by e-mail. This information includes news releases, notices of webcasts, and filings with the SEC. Participants will not receive information that was not requested and can unsubscribe at any time.

Our corporate internet addresses are:

•PNMR: www.pnmresources.com

•PNM: www.pnm.com

•TNMP: www.tnmp.com

PNMR’s corporate website (www.pnmresources.com) includes a dedicated section providing key environmental and other sustainability information related to PNM’s and TNMP’s operations and other information that collectively demonstrates the Company’s commitment to ESG principles. This information highlights plans for PNM to be coal-free no later than 2031 and to have an emissions-free generating portfolio by 2040.

The contents of these websites are not a part of this Form 10-Q. The SEC filings of PNMR, PNM, and TNMP, including annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act, are accessible free of charge on the PNMR website as soon as reasonably practicable after they are filed with, or furnished to, the SEC. Reports filed with the SEC are available on its website, www.sec.gov. These reports are also available in print upon request from PNMR free of charge.

Also available on the Company’s website at https://www.pnmresources.com/esg-commitment/governance.aspx and in print upon request from any shareholder are PNMR’s:

•Corporate Governance Principles

•Code of Ethics (Do the Right Thing – Principles of Business Conduct)

•Charters of the Audit and Ethics Committee, Nominating and Governance Committee, Compensation and Human Resources Committee, and Finance Committee

•Restated Articles of Incorporation and Bylaws

The Company will post amendments to or waivers from its code of ethics (to the extent applicable to the Company’s executive officers and directors) on its website.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The Company manages the scope of its various forms of market risk through a comprehensive set of policies and procedures with oversight by senior level management through the Risk Management Committee (“RMC”). The Board’s Finance Committee sets the risk limit parameters. The RMC has oversight over the risk control organization. The RMC is assigned responsibility for establishing and enforcing the policies, procedures, and limits and evaluating the risks inherent in proposed transactions on an enterprise-wide basis. The RMC’s responsibilities include:

•Establishing policies regarding risk tolerance levels and activities in each of the business segments

•Approving new types of derivatives entered into for marketing and hedging

•Reviewing and approving hedging risk activities

•Establishing policies regarding counterparty credit exposure and limits

•Authorizing and delegating transaction limits

•Reviewing and approving controls and procedures for derivative activities

•Reviewing and approving models and assumptions used to calculate mark-to-market and market risk exposure

•Proposing risk limits to the Board’s Finance Committee for its approval

•Reporting to the Board’s Audit and Finance Committees on these activities

To the extent an open position exists, fluctuating commodity prices, interest rates, equity prices, and economic conditions can impact financial results and financial position, either favorably or unfavorably. As a result, the Company cannot predict with certainty the impact that its risk management decisions may have on its businesses, operating results, or financial position.

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Commodity Risk

Information concerning accounting for derivatives and the risks associated with commodity contracts is set forth in Note 7, including a summary of the fair values of mark-to-market energy related derivative contracts included in the Condensed Consolidated Balance Sheets. During the nine months ended September 30, 2023, and the year ended December 31, 2022, the Company had no commodity derivative instruments designated as cash flow hedging instruments.

Commodity contracts that meet the definition of a derivative are recorded at fair value on the Condensed Consolidated Balance Sheets. In the nine months ended September 30, 2023 and 2022, the effects of mark-to-market commodity derivative instruments had no impact to PNM’s net earnings and $6.5 million of fair value gains and $12.8 million of fair value losses have been recorded as a regulatory asset. All of the fair values as of September 30, 2023, were determined based on prices provided by external sources other than actively quoted market prices. The net mark-to-market amounts will settle by the end of 2023.

The Company manages risks associated with market fluctuations by utilizing various commodity instruments that may qualify as derivatives, including futures, forwards, options, and swaps. PNM uses such instruments to hedge its exposure to changes in the market prices of electricity and natural gas. PNM also uses such instruments under an NMPRC approved hedging plan to manage fuel and purchased power costs related to customers covered by its FPPAC.

Credit Risk

The Company is exposed to credit risk from its retail and wholesale customers, as well as the counterparties to derivative instruments. The Company conducts counterparty risk analysis across business segments and uses a credit management process to assess the financial conditions of counterparties. The following table provides information related to credit exposure by the credit worthiness (credit rating) and concentration of credit risk for wholesale counterparties, all of which will mature in less than two years.

Schedule of Credit Risk Exposure
September 30, 2023
Rating (1)	Credit Risk Exposure(2)		Number of Counter-parties >10%	Net Exposure of Counter-parties >10%
	(Dollars in thousands)
External ratings:
Investment grade	$	4,992	3	$	4,216
Non-investment grade	—		—	—
Split ratings	—		—	—
Internal ratings:
Investment grade	270		—	—
Non-investment grade	—		—	—
Total	$	5,262		$	4,216

(1)The rating “Investment Grade” is for counterparties, or a guarantor, with a minimum S&P rating of BBB- or Moody’s rating of Baa3. The category “Internal Ratings – Investment Grade” includes those counterparties that are internally rated as investment grade in accordance with the guidelines established in the Company’s credit policy.

(2)The Credit Risk Exposure is the gross credit exposure, including long-term contracts, forward sales, and short-term sales. The gross exposure captures the amounts from receivables/payables for realized transactions, delivered and unbilled revenues, and mark-to-market gains/losses. Gross exposures can be offset according to legally enforceable netting arrangements but are not reduced by posted credit collateral. At September 30, 2023, PNMR held $0.2 million of cash collateral to offset its credit exposure.

Net credit risk for the Company’s largest counterparty as of September 30, 2023, was $2.7 million.

Other investments have no significant counterparty credit risk.

Interest Rate Risk

The majority of PNM’s and TNMP’s long-term debt is fixed-rate debt, which does not expose earnings to adverse changes in market interest rates. PNM and TNMP earnings are exposed to adverse changes in market interest rates when long-term debt must be refinanced, repriced or redeemed. PNMR’s debt and the revolving credit facilities of PNM and TNMP are exposed to interest rate risk to the extent variable interest rates continue to rise. The Company periodically makes plans to reduce its variable interest rate exposures through various instruments including fixed rate debt and equity and hedging arrangements like those executed by PNMR in May, September, October 2022 and March and May 2023 and otherwise expects

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that it will be able to extend or replace variable rate debt under similar terms and conditions prior to their expirations. Variable interest rates under the PNMR, PNM, and TNMP revolving credit facilities and term loans are based on SOFR.

At October 20, 2023, variable rate debt balances and weighted average interest rates were as follows:

Variable Rate Debt	Weighted Average Interest Rate		Balance Outstanding		Capacity
			(In thousands)
Short-term Debt:
PNMR Revolving Credit Facility	6.93	%	$	193,400	$	300,000
PNM Revolving Credit Facility	6.68		121,700		400,000
PNM New Mexico Credit Facility	6.67		40,000		40,000
TNMP Revolving Credit Facility	6.30		43,600		100,000
			$	398,700	$	840,000
Long-term Debt:
PNMR 2021 Delayed-Draw Term Loan	6.37	%	$	500,000
PNMR 2023 Term Loan	6.77		500,000
PNM 2022 Term Loan	6.18		225,000
			$	1,225,000

As discussed above, PNM expects ETBC I to issue Securitized Bonds during the fourth quarter of 2023. Under the terms of the unanimous settlement agreement in the matter of the SJGS Abandonment discussed in Note 12, PNM will not be allowed to recover interest costs on the Securitized Bonds in excess of 5.5%. As a result, PNM is at risk of exposure to increasing interest rates to the extent that the coupon rate on the Securitized Bonds, at the time of issuance, exceeds 5.5% that may be refundable to customers.

The investments held by PNM in trusts for decommissioning and reclamation had an estimated fair value of $421.4 million at September 30, 2023, of which 58.3% were fixed-rate debt securities that subject PNM to risk of loss of fair value with increases in market interest rates. If interest rates were to increase by 50 basis points from their levels at September 30, 2023, the decrease in the fair value of the fixed-rate securities would be 1.9%, or $4.7 million.

PNM does not directly recover or return through rates any losses or gains on the securities, including equity investments discussed below, in the trusts for decommissioning and reclamation. However, the overall performance of these trusts does enter into the periodic determinations of expense and funding levels, which are factored into the rate making process to the extent applicable to regulated operations. The NMPRC ruled in the NM 2015 Rate Case that PNM would not be able to include future contributions made by PNM for decommissioning of PVNGS to the extent applicable to certain capacity purchased and leased by PNM in rates charged to retail customers. The NM Supreme Court ruled that the NMPRC’s decision to disallow recovery of such future contributions for decommissioning denied PNM due process and remanded the matter back to the NMPRC for further proceedings. On November 18, 2022, the NMPRC issued an order requiring, among other things, PNM to address unresolved issues on whether PNM should be denied recovery of future decommissioning expense as a remedy for imprudence in the 2024 Rate Change. See Note 12. PNM is at risk for shortfalls in funding of obligations due to investment losses, including those from the equity market risks discussed below, to the extent not ultimately recovered through rates charged to customers.

Equity Market Risk

The investments held by PNM in trusts for decommissioning and reclamation include certain equity securities at September 30, 2023. These equity securities expose PNM to losses in fair value should the market values of the underlying securities decline. Equity securities comprised 32.7% of the securities held by the trusts as of September 30, 2023. A hypothetical 10% decrease in equity prices would reduce the fair values of these funds by $13.8 million.

ITEM 4. CONTROLS AND PROCEDURES

Evaluation of disclosure controls and procedures

As of the end of the period covered by this quarterly report, each of PNMR, PNM, and TNMP conducted an evaluation, under the supervision and with the participation of its management, including its Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of the disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934). Based upon this evaluation, the Chief Executive Officer and the Chief Financial Officer of each of PNMR, PNM, and TNMP concluded that the disclosure controls and procedures are effective.

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Changes in internal controls over financial reporting

There have been no changes in each of PNMR’s, PNM’s, and TNMP’s internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934) during the quarter ended September 30, 2023, that have materially affected, or are reasonably likely to materially affect, each of PNMR’s, PNM’s, and TNMP’s internal control over financial reporting.

PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

See Notes 11 and 12 for information related to the following matters, for PNMR, PNM, and TNMP, incorporated in this item by reference.

Note 11

•Cooling Water Intake Structures

•Santa Fe Generating Station

Note 12

•PNMR – Merger Regulatory Proceedings

•PNM – 2024 Rate Change

•PNM – 2020 Decoupling Petition

•PNM – FPPAC Continuation Application

•PNM – Integrated Resource Plan

•PNM – SJGS Abandonment Application

•PNM – Four Corners Abandonment Application

•PNM – Grid Modernization Application

•PNM – Community Solar Act

•PNM – FERC Order 864

•TNMP – Transmission Cost of Service Rates

•TNMP – Periodic Distribution Rate Adjustment

ITEM 1A. RISK FACTORS

As of the date of this report, there have been no material changes with regard to the Risk Factors disclosed in PNMR’s, PNM’s, and TNMP’s Annual Reports on Form 10-K for the year ended December 31, 2022, except as set forth below.

Costs related to the issuance of Securitized Bonds, including interest, may not be recoverable or if recovered may be refundable to customers, which could negatively impact results of operations and liquidity.

PNM expects ETBC I to issue $343.2 million principal amount of Securitized Bonds in the fourth quarter of 2023. Under the terms of the unanimous settlement agreement in the matter of the SJGS Abandonment Application (Note 12), any costs associated with premiums or discounts on the Securitized bonds will not be recoverable through rates. In addition, customers shall be held harmless if the weighted average coupon rate of the Securitized Bonds exceeds 5.5%. PNM is unable to quantify the actual costs, including interest, that will not be recovered or if recovered may be refundable and is subject to interest rate risk. The Company’s results of operations, cash flows, and financial position could be adversely affected if the coupon rate of the Securitized Bonds exceeds 5.5%.

ITEM 5. OTHER INFORMATION

During the three months ended September 30, 2023, no director or officer (as defined by Rule 16a-1(f) of the Exchange Act) of the Company adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408(a) of Regulation S-K.

ITEM 6. EXHIBITS

2.1	PNMR	Amendment No. 3 to Merger Agreement, dated as of June 19, 2023, by and among PNM Resources, Inc., Avangrid, Inc., and NM Green Holdings, Inc. (incorporated by reference to Exhibit 2.1 to PNMR’s Current Report on Form 8-K filed June 20, 2023)
3.1	PNMR	Articles of Incorporation of PNMR, as amended to date (incorporated by reference to Exhibit 3.1 to PNMR’s Current Report on Form 8-K filed November 21, 2008)
3.2	PNM	Restated Articles of Incorporation of PNM, as amended through May 31, 2002 (incorporated by reference to Exhibit 3.1.1 to PNM’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2002)

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3.3	TNMP	Articles of Incorporation of TNMP, as amended through July 7, 2005 (incorporated by reference to Exhibit 3.1.2 to TNMP’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2005)
3.4	PNMR	Bylaws of PNMR, with all amendments to and including October 24, 2017 (incorporated by reference to Exhibit 3.1 to PNMR’s Current Report on Form 8-K filed October 25, 2017)
3.5	PNM	Bylaws of PNM, with all amendments to and including July 1, 2022 (incorporated by reference to Exhibit 3.5 to PNM’s Report on Form 8-K filed July 1, 2022)
3.6	TNMP	Bylaws of TNMP, with all amendments to and including June 18, 2013 (incorporated by reference to Exhibit 3.6 to TNMP’s Current Report on Form 8-K filed June 20, 2013)
31.1	PNMR	Chief Executive Officer Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2	PNMR	Chief Financial Officer Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.3	PNM	Chief Executive Officer Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.4	PNM	Chief Financial Officer Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.5	TNMP	Chief Executive Officer Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.6	TNMP	Chief Financial Officer Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1	PNMR	Chief Executive Officer and Chief Financial Officer Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2	PNM	Chief Executive Officer and Chief Financial Officer Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.3	TNMP	Chief Executive Officer and Chief Financial Officer Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS	PNMR, PNM, and TNMP	XBRL Instance Document - The instance document does not appear in the interactive data file because XBRL tags are embedded within the Inline XBRL document
101.SCH	PNMR, PNM, and TNMP	Inline XBRL Taxonomy Extension Schema Document
101.CAL	PNMR, PNM, and TNMP	Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	PNMR, PNM, and TNMP	Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	PNMR, PNM, and TNMP	Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE	PNMR, PNM, and TNMP	Inline XBRL Taxonomy Extension Presentation Linkbase Document
104	PNMR, PNM, and TNMP	Cover Page Inline XBRL File (included in Exhibits 101)

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned thereunto duly authorized.

		PNM RESOURCES, INC. TEXAS-NEW MEXICO POWER COMPANY
		(Registrants)
Date:	October 27, 2023	/s/ Henry E. Monroy
		Henry E. Monroy
		Vice President and Corporate Controller
		(Officer duly authorized to sign this report)

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		PUBLIC SERVICE COMPANY OF NEW MEXICO
		(Registrant)
Date:	October 27, 2023	/s/ Henry E. Monroy
		Henry E. Monroy
		Vice President, Regulatory and Corporate Controller
		(Officer duly authorized to sign this report)

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EX-31.1

PNM Resources

414 Silver Ave. SW

Albuquerque, NM 87102-3289

EXHIBIT 31.1

CERTIFICATION

I, Patricia K. Collawn, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of PNM Resources, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (each registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal controls over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	October 27, 2023	By:	/s/ Patricia K. Collawn
			Patricia K. Collawn
			Chairman and Chief Executive Officer
			PNM Resources, Inc.

EX-31.2

PNM Resources

414 Silver Ave. SW

Albuquerque, NM 87102-3289

EXHIBIT 31.2

CERTIFICATION

I, Elisabeth A. Eden, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of PNM Resources, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (each registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal controls over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	October 27, 2023	By:	/s/ Elisabeth A. Eden
			Elisabeth A. Eden
			Senior Vice President, Chief Financial Officer and
			Treasurer
			PNM Resources, Inc.

EX-31.3

Public Service Company of New Mexico

414 Silver Ave. SW

Albuquerque, NM 87102-3289

EXHIBIT 31.3

CERTIFICATION

I, Joseph D. Tarry, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Public Service Company of New Mexico;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (each registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal controls over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	October 27, 2023	By:	/s/ Joseph D. Tarry
			Joseph D. Tarry
			President and Chief Executive Officer
			Public Service Company of New Mexico

EX-31.4

Public Service Company of New Mexico

414 Silver Ave. SW

Albuquerque, NM 87102-3289

EXHIBIT 31.4

CERTIFICATION

I, Elisabeth A. Eden, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Public Service Company of New Mexico;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (each registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal controls over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	October 27, 2023	By:	/s/ Elisabeth A. Eden
			Elisabeth A. Eden
			Senior Vice President, Chief Financial Officer and
			Treasurer
			Public Service Company of New Mexico

EX-31.5

Texas-New Mexico Power Company

577 N. Garden Ridge Blvd.

Lewisville, Texas 75067

EXHIBIT 31.5

CERTIFICATION

I, Joseph D. Tarry, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Texas-New Mexico Power Company;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (each registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal controls over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	October 27, 2023	By:	/s/ Joseph D. Tarry
			Joseph D. Tarry
			Chief Executive Officer
			Texas-New Mexico Power Company

EX-31.6

Texas-New Mexico Power Company

577 N. Garden Ridge Blvd.

Lewisville, Texas 75067

EXHIBIT 31.6

CERTIFICATION

I, Elisabeth A. Eden, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Texas-New Mexico Power Company;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (each registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal controls over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	October 27, 2023	By:	/s/ Elisabeth A. Eden
			Elisabeth A. Eden
			Senior Vice President, Chief Financial Officer and
			Treasurer
			Texas-New Mexico Power Company

EX-32.1

PNM Resources

414 Silver Ave. SW

Albuquerque, NM 87102-3289

www.pnmresources.com

EXHIBIT 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. § 1350, AS ADOPTED PURSUANT TO § 906 OF THE

SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q for the period ended September 30, 2023, for PNM Resources, Inc. (“Company”), as filed with the Securities and Exchange Commission on October 27, 2023 (“Report”), each of the undersigned officers of the Company certifies, pursuant to 18 U.S.C. §1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1)the Report fully complies with the requirements of § 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2)the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	October 27, 2023	By:	/s/ Patricia K. Collawn
			Patricia K. Collawn
			Chairman and Chief Executive Officer
			PNM Resources, Inc.
		By:	/s/ Elisabeth A. Eden
			Elisabeth A. Eden
			Senior Vice President, Chief Financial Officer and
			Treasurer
			PNM Resources, Inc.

EX-32.2

Public Service Company of New Mexico

414 Silver Ave. SW

Albuquerque, NM 87102-3289

EXHIBIT 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. § 1350, AS ADOPTED PURSUANT TO § 906 OF THE

SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q for the period ended September 30, 2023, for Public Service Company of New Mexico (“Company”), as filed with the Securities and Exchange Commission on October 27, 2023 (“Report”), each of the undersigned officers of the Company certifies, pursuant to 18 U.S.C. §1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1)the Report fully complies with the requirements of § 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2)the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	October 27, 2023	By:	/s/ Joseph D. Tarry
			Joseph D. Tarry
			President and Chief Executive Officer
			Public Service Company of New Mexico
		By:	/s/ Elisabeth A. Eden
			Elisabeth A. Eden
			Senior Vice President, Chief Financial Officer and
			Treasurer
			Public Service Company of New Mexico

EX-32.3

Texas-New Mexico Power Company

577 N. Garden Ridge Blvd.

Lewisville, Texas 75067

EXHIBIT 32.3

CERTIFICATION PURSUANT TO 18 U.S.C. § 1350, AS ADOPTED PURSUANT TO § 906 OF THE

SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q for the period ended September 30, 2023, for Texas-New Mexico Power Company (“Company”), as filed with the Securities and Exchange Commission on October 27, 2023 (“Report”), each of the undersigned officers of the Company certifies, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that:

(1)the Report fully complies with the requirements of § 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2)the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	October 27, 2023	By:	/s/ Joseph D. Tarry
			Joseph D. Tarry
			Chief Executive Officer
			Texas-New Mexico Power Company
		By:	/s/ Elisabeth A. Eden
			Elisabeth A. Eden
			Senior Vice President, Chief Financial Officer and
			Treasurer
			Texas-New Mexico Power Company

XML

Cover Page - shares	9 Months Ended
	Sep. 30, 2023	Oct. 20, 2023
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
Document Transition Report	false
Entity Registrant Name	PNM Resources, Inc.
Entity Incorporation, State or Country Code	NM
Entity Address, Address Line One	414 Silver Ave. SW
Entity Address, City or Town	Albuquerque
Entity Address, State or Province	NM
Entity Address, Postal Zip Code	87102-3289
City Area Code	505
Local Phone Number	241-2700
Entity File Number	001-32462
Entity Tax Identification Number	85-0468296
Title of 12(b) Security	Common Stock, no par value
Trading Symbol	PNM
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		85,834,874
Entity Central Index Key	0001108426
Document Fiscal Year Focus	2023
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q3
Amendment Flag	false
PNM
Entity Information [Line Items]
Entity Registrant Name	Public Service Company of New Mexico
Entity Address, Address Line One	414 Silver Ave. SW
Entity Address, City or Town	Albuquerque
Entity Address, State or Province	NM
Entity Address, Postal Zip Code	87102-3289
City Area Code	505
Local Phone Number	241-2700
Entity File Number	001-06986
Entity Tax Identification Number	85-0019030
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		39,117,799
Entity Central Index Key	0000081023
Current Fiscal Year End Date	--12-31
Texas-New Mexico Power Company
Entity Information [Line Items]
Entity Registrant Name	Texas-New Mexico Power Company
Entity Address, Address Line One	577 N. Garden Ridge Blvd.
Entity Address, City or Town	Lewisville
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75067
City Area Code	972
Local Phone Number	420-4189
Entity File Number	002-97230
Entity Tax Identification Number	75-0204070
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		6,358
Entity Central Index Key	0000022767
Current Fiscal Year End Date	--12-31

XML

Condensed Consolidated Statements of Earnings - PNMR - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Electric Operating Revenues	$ 505,851	$ 729,888	$ 1,527,084	$ 1,673,736
Operating Expenses:
Administrative and general	58,481	58,125	167,630	165,328
Regulatory disallowances and restructuring costs	2,315	(567)	6,046	832
Depreciation and amortization	80,192	76,570	237,405	229,103
Transmission and distribution costs	25,078	21,538	72,739	61,160
Taxes other than income taxes	22,432	22,651	72,395	71,207
Total operating expenses	419,199	547,125	1,249,011	1,336,513
Operating income	86,652	182,763	278,073	337,223
Other Income and Deductions:
Interest income	5,366	3,969	15,568	11,588
Gains (losses) on investment securities	(8,404)	(15,736)	1,815	(84,104)
Other income	8,428	5,364	17,121	14,845
Other (deductions)	(4,555)	(1,647)	(10,562)	(7,529)
Net other income and deductions	835	(8,050)	23,942	(65,200)
Interest Charges	49,838	34,526	136,660	89,963
Earnings before Income Taxes	37,649	140,187	165,355	182,060
Income Taxes (Benefits)	(5,267)	13,450	12,742	16,982
Net Earnings	42,916	126,737	152,613	165,078
(Earnings) Attributable to Valencia Non-controlling Interest	(5,058)	(4,172)	(14,172)	(10,897)
Preferred Stock Dividend Requirements	(132)	(132)	(396)	(396)
Net Earnings Available for PNM Common Stock	$ 37,726	$ 122,433	$ 138,045	$ 153,785
Net Earnings Attributable to PNMR per Common Share:
Basic (dollars per share)	$ 0.44	$ 1.42	$ 1.60	$ 1.79
Diluted (dollars per share)	0.44	1.42	1.60	1.78
Dividends Declared per Common Share (dollars per share)	$ 0.3675	$ 0.3475	$ 1.1025	$ 1.0425
Energy
Electric Operating Revenues	$ 505,851	$ 729,888	$ 1,527,084	$ 1,673,736
Operating Expenses:
Energy costs	210,313	334,339	624,451	698,349
Energy Production
Operating Expenses:
Energy costs	$ 20,388	$ 34,469	$ 68,345	$ 110,534

XML

Condensed Consolidated Statements of Comprehensive Income - PNMR - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net Earnings	$ 42,916	$ 126,737	$ 152,613	$ 165,078
Unrealized Gains on Available-for-Sale Debt Securities:
Net increase (decrease) in unrealized holding gains arising during the period, net of income tax (expense) benefit of $526, $(326), $(632) and $2,075	(1,543)	956	1,859	(6,095)
Reclassification adjustment for (gains) included in net earnings, net of income tax expense of $389, $129, $1,044, and $870	(1,142)	(380)	(3,067)	(2,556)
Pension Liability Adjustment:
Reclassification adjustment for amortization of experience losses recognized as net periodic benefit cost, net of income tax (benefit) of $(303), $(451), $(909), and $(1,353)	891	1,325	2,673	3,975
Fair Value Adjustment for Cash Flow Hedges:
Change in fair market value, net of income tax (expense) of $1,512, $(1,764), $606, and $(2,640)	(4,441)	5,179	(1,780)	7,751
Reclassification adjustment for gains (losses) included in net earnings, net of income tax (expense) benefit of $(1,039), $148, $(1,343), and $449	3,050	(434)	3,943	(1,318)
Total Other Comprehensive Income (Loss)	(3,185)	6,646	3,628	1,757
Comprehensive Income	39,731	133,383	156,241	166,835
Comprehensive (Income) Attributable to Valencia Non-controlling Interest	(5,058)	(4,172)	(14,172)	(10,897)
Preferred Stock Dividend Requirements of Subsidiary	(132)	(132)	(396)	(396)
Comprehensive Income Attributable to PNM	$ 34,541	$ 129,079	$ 141,673	$ 155,542

XML

Condensed Consolidated Statements of Comprehensive Income - PNMR (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Unrealized holding gains (losses) arising during the period, income tax (expense) benefit	$ 526	$ (326)	$ (632)	$ 2,075
Reclassification adjustment for (gains) losses included in net earnings, income tax expense (benefit)	389	129	1,044	870
Pension liability adjustment, income tax expense (benefit)	(303)	(451)	(909)	(1,353)
Change in fair market value, income tax (expense) benefit	1,512	(1,764)	606	(2,640)
Reclassification adjustment for (gains) losses included in net earnings, income tax expense (benefit)	$ (1,039)	$ 148	$ (1,343)	$ 449

XML

Condensed Consolidated Statements of Cash Flows - PNMR - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash Flows From Operating Activities:
Net Earnings	$ 152,613	$ 165,078
Adjustments to reconcile net earnings to net cash flows from operating activities:
Depreciation and amortization	262,557	255,808
Deferred income tax expense	10,874	15,036
(Gains) losses on investment securities	(1,815)	84,104
Stock based compensation expense	5,871	5,972
Regulatory disallowances and restructuring costs	6,046	832
Allowance for equity funds used during construction	(10,075)	(9,232)
Other, net	476	1,323
Changes in certain assets and liabilities:
Accounts receivable and unbilled revenues	972	(66,713)
Materials, supplies, and fuel stock	(16,657)	(6,630)
Other current assets	(77,016)	3,687
Other assets	(13,613)	6,676
Accounts payable	(12,222)	11,845
Accrued interest and taxes	9,686	17,875
Other current liabilities	116,887	(26,082)
Other liabilities	(21,980)	(32,083)
Net cash flows from operating activities	412,604	427,496
Cash Flows From Investing Activities:
Utility plant additions	(807,932)	(702,878)
Proceeds from sale of plant assets (Note 13)	32,654	0
Proceeds from sales of investment securities	412,574	323,251
Purchases of investment securities	(423,467)	(332,490)
Purchases of investment securities	(25,750)	0
Other, net	44	692
Net cash flows used in investing activities	(811,877)	(711,425)
Cash Flows From Financing Activities:
Revolving credit facilities borrowings (repayments), net	173,500	(2,500)
Long-term borrowings	1,015,000	558,000
Repayment of long-term debt	(685,000)	(179,500)
Awards of common stock	(9,631)	(7,846)
Dividends paid	(95,029)	(89,879)
Valencia’s transactions with its owner	(15,993)	(12,455)
Transmission interconnection and security deposit arrangements	46,254	76,696
Debt issuance costs and other, net	(6,528)	(3,668)
Net cash flows from financing activities	402,963	288,447
Change in Cash and Cash Equivalents	3,690	4,518
Cash and Cash Equivalents at Beginning of Period	4,078	1,104
Cash and Cash Equivalents at End of Period	7,768	5,622
Supplemental Cash Flow Disclosures:
Interest paid, net of amounts capitalized	121,876	79,246
Income taxes paid (refunded), net	1,400	904
Supplemental schedule of noncash investing activities:
Decrease in accrued plant additions	$ 46,452	$ 56,948

XML

Condensed Consolidated Balance Sheets - PNMR - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current Assets:
Cash and cash equivalents	$ 7,768	$ 4,078
Accounts receivable, net of allowance for credit losses of $4,549 and $4,925	175,193	183,669
Unbilled revenues	68,271	63,473
Other receivables	25,719	20,320
Materials, supplies, and fuel stock	83,391	66,733
Regulatory assets	99,388	20,265
Prepaid assets	21,705	18,465
Income taxes receivable	1,883	2,351
Other current assets	5,909	31,624
Total current assets	489,227	410,978
Other Property and Investments:
Investment securities	421,377	417,476
Equity investment in NMRD	118,569	90,620
Other investments	172	177
Non-utility property, net	29,584	26,841
Total other property and investments	569,702	535,114
Utility Plant:
Plant in service, held for future use, and to be abandoned	9,344,655	9,164,564
Less accumulated depreciation and amortization	2,728,523	2,659,952
Net plant in service and plant held for future use	6,616,132	6,504,612
Construction work in progress	717,353	372,988
Nuclear fuel, net of accumulated amortization of $34,759 and $43,985	77,368	95,223
Net utility plant	7,410,853	6,972,823
Deferred Charges and Other Assets:
Regulatory assets	924,487	846,686
Goodwill	278,297	278,297
Operating lease right-of-use assets, net of accumulated amortization	185,989	55,982
Other deferred charges	192,286	157,497
Total deferred charges and other assets	1,581,059	1,338,462
Assets	10,050,841	9,257,377
Current Liabilities:
Short-term debt	405,500	232,000
Current installments of long-term debt	502,434	184,793
Accounts payable	157,035	215,708
Customer deposits	6,259	6,117
Accrued interest and taxes	86,001	76,783
Regulatory liabilities	122,895	17,002
Operating lease liabilities	11,983	18,781
Dividends declared	31,676	31,676
Transmission interconnection arrangement liabilities	65,063	20,473
Other current liabilities	89,727	87,037
Total current liabilities	1,478,573	890,370
Long-term Debt, net of Unamortized Premiums, Discounts, and Debt Issuance Costs	3,902,687	3,892,594
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	859,173	822,831
Regulatory liabilities	764,360	755,202
Asset retirement obligations	228,343	223,377
Accrued pension liability and postretirement benefit cost	27,748	32,799
Operating lease liabilities	168,849	41,336
Other deferred credits	323,195	342,413
Total deferred credits and liabilities	2,371,668	2,217,958
Total liabilities	7,752,928	7,000,922
Commitments and Contingencies (Note 11)
Cumulative Preferred Stock of Subsidiary without mandatory redemption requirements ($100 stated value; 10,000,000 shares authorized; issued and outstanding 115,293 shares)	11,529	11,529
PNM common stockholder’s equity:
Common stock (no par value; 120,000,000 shares authorized; issued and outstanding 85,834,874 shares)	1,425,342	1,429,102
Accumulated other comprehensive income (loss), net of income taxes	(62,420)	(66,048)
Retained earnings	872,289	828,878
Total PNM common stockholder’s equity	2,235,211	2,191,932
Non-controlling interest in Valencia	51,173	52,994
Total equity	2,286,384	2,244,926
Total liabilities and stockholders' equity	$ 10,050,841	$ 9,257,377

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Condensed Consolidated Balance Sheets - PNMR (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Allowance for uncollectible accounts	$ 4,549	$ 4,925
Accumulated depreciation, nuclear fuel	$ 34,759	$ 43,985
Cumulative preferred stock of subsidiary, stated value (in dollars per share)	$ 100	$ 100
Cumulative preferred stock of subsidiary, shares authorized (in shares)	10,000,000	10,000,000
Cumulative preferred stock of subsidiary, shares issued (in shares)	115,293	115,293
Cumulative preferred stock of subsidiary, shares outstanding (in shares)	115,293	115,293
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares issued (in shares)	85,834,874	85,834,874
Common stock, shares outstanding (in shares)	85,834,874	85,834,874

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Condensed Consolidated Statements of Changes in Equity - PNMR - USD ($) $ in Thousands	Total	Total PNMR Common Stockholders’ Equity	Common Stock	AOCI	Retained Earnings	Non- controlling Interest in Valencia
Beginning balance at Dec. 31, 2021	$ 2,222,929	$ 2,167,524	$ 1,429,257	$ (71,936)	$ 810,203	$ 55,405
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings before subsidiary preferred stock dividends	165,078	154,181			154,181	10,897
Total other comprehensive income (loss)	1,757	1,757		1,757
Subsidiary preferred stock dividends	(396)	(396)			(396)
Dividends declared on common stock	(119,311)	(119,311)			(119,311)
Awards of common stock	(7,846)	(7,846)	(7,846)
Stock based compensation expense	5,972	5,972	5,972
Valencia’s transactions with its owner	(12,455)					(12,455)
Ending balance at Sep. 30, 2022	2,255,728	2,201,881	1,427,383	(70,179)	844,677	53,847
Beginning balance at Jun. 30, 2022	2,185,687	2,131,522	1,426,448	(76,825)	781,899	54,165
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings before subsidiary preferred stock dividends	126,737	122,565			122,565	4,172
Total other comprehensive income (loss)	6,646	6,646		6,646
Subsidiary preferred stock dividends	(132)	(132)			(132)
Dividends declared on common stock	(59,655)	(59,655)			(59,655)
Awards of common stock	(221)	(221)	(221)
Stock based compensation expense	1,156	1,156	1,156
Valencia’s transactions with its owner	(4,490)					(4,490)
Ending balance at Sep. 30, 2022	2,255,728	2,201,881	1,427,383	(70,179)	844,677	53,847
Beginning balance at Dec. 31, 2022	2,244,926	2,191,932	1,429,102	(66,048)	828,878	52,994
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings before subsidiary preferred stock dividends	152,613	138,441			138,441	14,172
Total other comprehensive income (loss)	3,628	3,628		3,628
Subsidiary preferred stock dividends	(396)	(396)			(396)
Dividends declared on common stock	(94,634)	(94,634)			(94,634)
Awards of common stock	(9,631)	(9,631)	(9,631)
Stock based compensation expense	5,871	5,871	5,871
Valencia’s transactions with its owner	(15,993)					(15,993)
Ending balance at Sep. 30, 2023	2,286,384	2,235,211	1,425,342	(62,420)	872,289	51,173
Beginning balance at Jun. 30, 2023	2,313,596	2,262,243	1,423,827	(59,235)	897,651	51,353
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings before subsidiary preferred stock dividends	42,916	37,858			37,858	5,058
Total other comprehensive income (loss)	(3,185)	(3,185)		(3,185)
Subsidiary preferred stock dividends	(132)	(132)			(132)
Dividends declared on common stock	(63,088)	(63,088)			(63,088)
Awards of common stock	(13)	(13)	(13)
Stock based compensation expense	1,528	1,528	1,528
Valencia’s transactions with its owner	(5,238)					(5,238)
Ending balance at Sep. 30, 2023	$ 2,286,384	$ 2,235,211	$ 1,425,342	$ (62,420)	$ 872,289	$ 51,173

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Condensed Consolidated Statements of Earnings - PNM - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Electric Operating Revenues	$ 505,851	$ 729,888	$ 1,527,084	$ 1,673,736
Operating Expenses:
Administrative and general	58,481	58,125	167,630	165,328
Regulatory disallowances and restructuring costs	2,315	(567)	6,046	832
Depreciation and amortization	80,192	76,570	237,405	229,103
Transmission and distribution costs	25,078	21,538	72,739	61,160
Taxes other than income taxes	22,432	22,651	72,395	71,207
Total operating expenses	419,199	547,125	1,249,011	1,336,513
Operating income	86,652	182,763	278,073	337,223
Other Income and Deductions:
Interest income	5,366	3,969	15,568	11,588
Gains (losses) on investment securities	(8,404)	(15,736)	1,815	(84,104)
Other income	8,428	5,364	17,121	14,845
Other (deductions)	(4,555)	(1,647)	(10,562)	(7,529)
Net other income and deductions	835	(8,050)	23,942	(65,200)
Interest Charges	49,838	34,526	136,660	89,963
Earnings before Income Taxes	37,649	140,187	165,355	182,060
Income Taxes (Benefits)	(5,267)	13,450	12,742	16,982
Net Earnings	42,916	126,737	152,613	165,078
(Earnings) Attributable to Valencia Non-controlling Interest	(5,058)	(4,172)	(14,172)	(10,897)
Preferred Stock Dividend Requirements	(132)	(132)	(396)	(396)
Net Earnings Available for PNM Common Stock	37,726	122,433	138,045	153,785
Energy
Electric Operating Revenues	505,851	729,888	1,527,084	1,673,736
Operating Expenses:
Energy costs	210,313	334,339	624,451	698,349
Energy Production
Operating Expenses:
Energy costs	20,388	34,469	68,345	110,534
PNM
Electric Operating Revenues	350,334	597,337	1,118,741	1,312,800
Operating Expenses:
Administrative and general	53,460	51,900	151,178	149,361
Regulatory disallowances and restructuring costs	2,315	(567)	6,046	832
Depreciation and amortization	44,537	45,361	132,287	137,132
Transmission and distribution costs	15,326	12,549	43,968	37,678
Taxes other than income taxes	9,250	10,359	36,078	36,768
Total operating expenses	319,638	457,422	955,726	1,078,434
Operating income	30,696	139,915	163,015	234,366
Other Income and Deductions:
Interest income	5,323	3,888	15,542	10,288
Gains (losses) on investment securities	(8,404)	(15,736)	1,815	(84,104)
Other income	3,484	2,086	8,656	7,997
Other (deductions)	(2,678)	(793)	(7,341)	(5,368)
Net other income and deductions	(2,275)	(10,555)	18,672	(71,187)
Interest Charges	22,354	15,467	61,242	44,562
Earnings before Income Taxes	6,067	113,893	120,445	118,617
Income Taxes (Benefits)	(7,199)	12,121	12,041	11,762
Net Earnings	13,266	101,772	108,404	106,855
(Earnings) Attributable to Valencia Non-controlling Interest	(5,058)	(4,172)	(14,172)	(10,897)
Net Earnings Attributable to PNM	8,208	97,600	94,232	95,958
Preferred Stock Dividend Requirements	(132)	(132)	(396)	(396)
Net Earnings Available for PNM Common Stock	8,076	97,468	93,836	95,562
PNM | Energy
Operating Expenses:
Energy costs	174,362	303,351	517,824	606,129
PNM | Energy Production
Operating Expenses:
Energy costs	$ 20,388	$ 34,469	$ 68,345	$ 110,534

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Condensed Consolidated Statements of Comprehensive Income - PNM - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net Earnings	$ 42,916	$ 126,737	$ 152,613	$ 165,078
Unrealized Gains on Available-for-Sale Debt Securities:
Net increase (decrease) in unrealized holding gains arising during the period, net of income tax (expense) benefit of $526, $(326), $(632) and $2,075	(1,543)	956	1,859	(6,095)
Reclassification adjustment for (gains) included in net earnings, net of income tax expense of $389, $129, $1,044, and $870	(1,142)	(380)	(3,067)	(2,556)
Pension Liability Adjustment:
Reclassification adjustment for amortization of experience losses recognized as net periodic benefit cost, net of income tax (benefit) of $(303), $(451), $(909), and $(1,353)	891	1,325	2,673	3,975
Total Other Comprehensive Income (Loss)	(3,185)	6,646	3,628	1,757
Comprehensive Income	39,731	133,383	156,241	166,835
Comprehensive (Income) Attributable to Valencia Non-controlling Interest	(5,058)	(4,172)	(14,172)	(10,897)
Comprehensive Income Attributable to PNM	34,541	129,079	141,673	155,542
PNM
Net Earnings	13,266	101,772	108,404	106,855
Unrealized Gains on Available-for-Sale Debt Securities:
Net increase (decrease) in unrealized holding gains arising during the period, net of income tax (expense) benefit of $526, $(326), $(632) and $2,075	(1,543)	956	1,859	(6,095)
Reclassification adjustment for (gains) included in net earnings, net of income tax expense of $389, $129, $1,044, and $870	(1,142)	(380)	(3,067)	(2,556)
Pension Liability Adjustment:
Reclassification adjustment for amortization of experience losses recognized as net periodic benefit cost, net of income tax (benefit) of $(303), $(451), $(909), and $(1,353)	891	1,325	2,673	3,975
Total Other Comprehensive Income (Loss)	(1,794)	1,901	1,465	(4,676)
Comprehensive Income	11,472	103,673	109,869	102,179
Comprehensive (Income) Attributable to Valencia Non-controlling Interest	(5,058)	(4,172)	(14,172)	(10,897)
Comprehensive Income Attributable to PNM	$ 6,414	$ 99,501	$ 95,697	$ 91,282

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Condensed Consolidated Statements of Comprehensive Income - PNM (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Unrealized holding gains (losses) arising during the period, income tax (expense) benefit	$ 526	$ (326)	$ (632)	$ 2,075
Reclassification adjustment for (gains) losses included in net earnings, income tax expense (benefit)	389	129	1,044	870
Pension liability adjustment, income tax expense (benefit)	(303)	(451)	(909)	(1,353)
PNM
Unrealized holding gains (losses) arising during the period, income tax (expense) benefit	526	(326)	(632)	2,075
Reclassification adjustment for (gains) losses included in net earnings, income tax expense (benefit)	389	129	1,044	870
Pension liability adjustment, income tax expense (benefit)	$ (303)	$ (451)	$ (909)	$ (1,353)

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Condensed Consolidated Statements of Cash Flows - PNM - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash Flows From Operating Activities:
Net Earnings	$ 152,613	$ 165,078
Adjustments to reconcile net earnings to net cash flows from operating activities:
Depreciation and amortization	262,557	255,808
Deferred income tax expense	10,874	15,036
(Gains) losses on investment securities	(1,815)	84,104
Regulatory disallowances and restructuring costs	6,046	832
Allowance for equity funds used during construction	(10,075)	(9,232)
Other, net	476	1,323
Changes in certain assets and liabilities:
Accounts receivable and unbilled revenues	972	(66,713)
Materials, supplies, and fuel stock	(16,657)	(6,630)
Other current assets	(77,016)	3,687
Other assets	(13,613)	6,676
Accounts payable	(12,222)	11,845
Accrued interest and taxes	9,686	17,875
Other current liabilities	116,887	(26,082)
Other liabilities	(21,980)	(32,083)
Net cash flows from operating activities	412,604	427,496
Cash Flows From Investing Activities:
Utility plant additions	(807,932)	(702,878)
Proceeds from sale of plant assets (Note 13)	32,654	0
Proceeds from sales of investment securities	412,574	323,251
Purchases of investment securities	(423,467)	(332,490)
Other, net	44	692
Net cash flows used in investing activities	(811,877)	(711,425)
Cash Flows From Financing Activities:
Revolving credit facilities borrowings (repayments), net	173,500	(2,500)
Long-term borrowings	1,015,000	558,000
Repayment of long-term debt	(685,000)	(179,500)
Dividends paid	(95,029)	(89,879)
Valencia’s transactions with its owner	(15,993)	(12,455)
Transmission interconnection and security deposit arrangements	46,254	76,696
Refunds paid under transmission interconnection and security deposit arrangements	(19,610)	(50,401)
Debt issuance costs and other, net	(6,528)	(3,668)
Net cash flows from financing activities	402,963	288,447
Change in Cash and Cash Equivalents	3,690	4,518
Cash and Cash Equivalents at Beginning of Period	4,078	1,104
Cash and Cash Equivalents at End of Period	7,768	5,622
Supplemental Cash Flow Disclosures:
Interest paid, net of amounts capitalized	121,876	79,246
Income taxes paid (refunded), net	1,400	904
Supplemental schedule of noncash investing activities:
Decrease in accrued plant additions	46,452	56,948
PNM
Cash Flows From Operating Activities:
Net Earnings	108,404	106,855
Adjustments to reconcile net earnings to net cash flows from operating activities:
Depreciation and amortization	150,903	161,303
Deferred income tax expense	12,041	11,762
(Gains) losses on investment securities	(1,815)	84,104
Regulatory disallowances and restructuring costs	6,046	832
Allowance for equity funds used during construction	(7,263)	(6,793)
Other, net	2,641	2,839
Changes in certain assets and liabilities:
Accounts receivable and unbilled revenues	15,648	(45,252)
Materials, supplies, and fuel stock	(12,300)	(3,809)
Other current assets	(81,653)	885
Other assets	(9,988)	7,958
Accounts payable	(11,073)	20,308
Accrued interest and taxes	11,592	14,799
Other current liabilities	115,984	(35,503)
Other liabilities	(20,451)	(24,717)
Net cash flows from operating activities	278,716	295,571
Cash Flows From Investing Activities:
Utility plant additions	(424,292)	(322,412)
Proceeds from sale of plant assets (Note 13)	32,654	0
Proceeds from sales of investment securities	412,574	323,251
Purchases of investment securities	(423,467)	(332,490)
Other, net	6	492
Net cash flows used in investing activities	(402,525)	(331,159)
Cash Flows From Financing Activities:
Revolving credit facilities borrowings (repayments), net	(19,000)	(7,400)
Long-term borrowings	330,000	298,000
Repayment of long-term debt	(185,000)	(179,500)
Dividends paid	(396)	(85,396)
Valencia’s transactions with its owner	(15,993)	(12,455)
Transmission interconnection and security deposit arrangements	35,254	70,296
Refunds paid under transmission interconnection and security deposit arrangements	(16,110)	(41,401)
Debt issuance costs and other, net	(3,769)	(2,201)
Net cash flows from financing activities	124,986	39,943
Change in Cash and Cash Equivalents	1,177	4,355
Cash and Cash Equivalents at Beginning of Period	2,985	19
Cash and Cash Equivalents at End of Period	4,162	4,374
Supplemental Cash Flow Disclosures:
Interest paid, net of amounts capitalized	46,584	37,269
Income taxes paid (refunded), net	0	0
Supplemental schedule of noncash investing activities:
Decrease in accrued plant additions	$ 30,837	$ 21,069

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Condensed Consolidated Balance Sheets - PNM - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current Assets:
Cash and cash equivalents	$ 7,768	$ 4,078
Accounts receivable, net of allowance for credit losses	175,193	183,669
Unbilled revenues	68,271	63,473
Other receivables	25,719	20,320
Materials, supplies, and fuel stock	83,391	66,733
Regulatory assets	99,388	20,265
Prepaid assets	21,705	18,465
Income taxes receivable	1,883	2,351
Other current assets	5,909	31,624
Total current assets	489,227	410,978
Other Property and Investments:
Investment securities	421,377	417,476
Other investments	172	177
Non-utility property, net	29,584	26,841
Total other property and investments	569,702	535,114
Utility Plant:
Plant in service, held for future use, and to be abandoned	9,344,655	9,164,564
Less accumulated depreciation and amortization	2,728,523	2,659,952
Net plant in service and plant held for future use	6,616,132	6,504,612
Construction work in progress	717,353	372,988
Nuclear fuel, net of accumulated amortization of $34,759 and $43,985	77,368	95,223
Net utility plant	7,410,853	6,972,823
Deferred Charges and Other Assets:
Regulatory assets	924,487	846,686
Goodwill	278,297	278,297
Operating lease right-of-use assets, net of accumulated amortization	185,989	55,982
Other deferred charges	192,286	157,497
Total deferred charges and other assets	1,581,059	1,338,462
Assets	10,050,841	9,257,377
Current Liabilities:
Short-term debt	405,500	232,000
Current installments of long-term debt	502,434	184,793
Accounts payable	157,035	215,708
Customer deposits	6,259	6,117
Accrued interest and taxes	86,001	76,783
Regulatory liabilities	122,895	17,002
Operating lease liabilities	11,983	18,781
Dividends declared	31,676	31,676
Transmission interconnection arrangement liabilities	65,063	20,473
Other current liabilities	89,727	87,037
Total current liabilities	1,478,573	890,370
Long-term Debt, net of Unamortized Premiums, Discounts, and Debt Issuance Costs	3,902,687	3,892,594
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	859,173	822,831
Regulatory liabilities	764,360	755,202
Asset retirement obligations	228,343	223,377
Accrued pension liability and postretirement benefit cost	27,748	32,799
Operating lease liabilities	168,849	41,336
Other deferred credits	323,195	342,413
Total deferred credits and liabilities	2,371,668	2,217,958
Total liabilities	7,752,928	7,000,922
Commitments and Contingencies (Note 11)
Cumulative Preferred Stock without mandatory redemption requirements ($100 stated value; 10,000,000 shares authorized; issued and outstanding 115,293 shares)	11,529	11,529
PNM common stockholder’s equity:
Common stock (no par value; 40,000,000 shares authorized; issued and outstanding 39,117,799 shares)	1,425,342	1,429,102
Accumulated other comprehensive income (loss), net of income taxes	(62,420)	(66,048)
Retained earnings	872,289	828,878
Total PNM common stockholder’s equity	2,235,211	2,191,932
Non-controlling interest in Valencia	51,173	52,994
Total equity	2,286,384	2,244,926
Total liabilities and stockholders' equity	10,050,841	9,257,377
PNM
Current Assets:
Cash and cash equivalents	4,162	2,985
Accounts receivable, net of allowance for credit losses	130,997	151,386
Unbilled revenues	47,317	45,282
Materials, supplies, and fuel stock	68,191	55,890
Regulatory assets	99,230	18,333
Prepaid assets	12,628	10,085
Income taxes receivable	18,233	18,233
Other current assets	2,094	20,706
Total current assets	414,625	345,645
Other Property and Investments:
Investment securities	421,377	417,476
Other investments	70	76
Non-utility property, net	14,335	11,695
Total other property and investments	435,782	429,247
Utility Plant:
Plant in service, held for future use, and to be abandoned	6,047,974	6,007,464
Less accumulated depreciation and amortization	1,953,246	1,908,644
Net plant in service and plant held for future use	4,094,728	4,098,820
Construction work in progress	472,864	300,772
Nuclear fuel, net of accumulated amortization of $34,759 and $43,985	77,368	95,223
Net utility plant	4,644,960	4,494,815
Deferred Charges and Other Assets:
Regulatory assets	846,107	763,941
Goodwill	51,632	51,632
Operating lease right-of-use assets, net of accumulated amortization	183,889	52,556
Other deferred charges	154,857	134,330
Total deferred charges and other assets	1,236,485	1,002,459
Assets	6,731,852	6,272,166
Current Liabilities:
Short-term debt	166,900	185,900
Current installments of long-term debt	422,513	184,793
Customer deposits	6,259	6,117
Accrued interest and taxes	47,389	35,797
Regulatory liabilities	120,833	7,913
Operating lease liabilities	10,992	17,239
Dividends declared	132	132
Transmission interconnection arrangement liabilities	65,063	20,473
Other current liabilities	54,491	55,350
Total current liabilities	1,028,881	692,155
Long-term Debt, net of Unamortized Premiums, Discounts, and Debt Issuance Costs	1,722,687	1,816,107
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	710,092	682,040
Regulatory liabilities	551,747	556,989
Asset retirement obligations	227,463	222,549
Accrued pension liability and postretirement benefit cost	27,208	32,007
Operating lease liabilities	167,891	39,633
Other deferred credits	230,550	258,833
Total deferred credits and liabilities	1,914,951	1,792,051
Total liabilities	4,666,519	4,300,313
Commitments and Contingencies (Note 11)
Cumulative Preferred Stock without mandatory redemption requirements ($100 stated value; 10,000,000 shares authorized; issued and outstanding 115,293 shares)	11,529	11,529
PNM common stockholder’s equity:
Common stock (no par value; 40,000,000 shares authorized; issued and outstanding 39,117,799 shares)	1,547,918	1,547,918
Accumulated other comprehensive income (loss), net of income taxes	(72,870)	(74,335)
Retained earnings	527,583	433,747
Total PNM common stockholder’s equity	2,002,631	1,907,330
Non-controlling interest in Valencia	51,173	52,994
Total equity	2,053,804	1,960,324
Total liabilities and stockholders' equity	6,731,852	6,272,166
PNM | Nonrelated Party
Current Assets:
Other receivables	22,508	13,877
Current Liabilities:
Accounts payable	121,612	163,522
PNM | Related Party
Current Assets:
Other receivables	9,265	8,868
Current Liabilities:
Accounts payable	$ 12,697	$ 14,919

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Condensed Consolidated Balance Sheets - PNM (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Allowance for uncollectible accounts	$ 4,549	$ 4,925
Accumulated depreciation, nuclear fuel	$ 34,759	$ 43,985
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares issued (in shares)	85,834,874	85,834,874
Common stock, shares outstanding (in shares)	85,834,874	85,834,874
PNM
Allowance for uncollectible accounts	$ 4,549	$ 4,925
Accumulated depreciation, nuclear fuel	$ 34,759	$ 43,985
Cumulative preferred stock, stated value (in dollars per share)	$ 100	$ 100
Cumulative preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Cumulative preferred stock, shares issued (in shares)	115,293	115,293
Cumulative preferred stock, shares outstanding (in shares)	115,293	115,293
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	40,000,000	40,000,000
Common stock, shares issued (in shares)	39,117,799	39,117,799
Common stock, shares outstanding (in shares)	39,117,799	39,117,799

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Condensed Consolidated Statements of Changes in Equity - PNM - USD ($)	Total	Total PNMR Common Stockholders’ Equity	Common Stock	AOCI	Retained Earnings	Non- controlling Interest in Valencia	PNM	PNM Total PNMR Common Stockholders’ Equity	PNM Common Stock	PNM AOCI	PNM Retained Earnings	PNM Non- controlling Interest in Valencia
Beginning balance at Dec. 31, 2021	$ 2,222,929,000	$ 2,167,524,000	$ 1,429,257,000	$ (71,936,000)	$ 810,203,000	$ 55,405,000	$ 2,015,264,000	$ 1,959,859,000	$ 1,547,918,000	$ (71,936,000)	$ 483,877,000	$ 55,405,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Earnings	165,078,000	154,181,000			154,181,000	10,897,000	106,855,000	95,958,000			95,958,000	10,897,000
Total other comprehensive income (loss)	1,757,000	1,757,000		1,757,000			(4,676,000)	(4,676,000)		(4,676,000)
Dividends declared on preferred stock							(396,000)	(396,000)			(396,000)
Dividends declared on common stock	(119,311,000)	(119,311,000)			(119,311,000)		(85,000,000)	(85,000,000)			(85,000,000)
Valencia’s transactions with its owner	(12,455,000)					(12,455,000)	(12,455,000)					(12,455,000)
Ending balance at Sep. 30, 2022	2,255,728,000	2,201,881,000	1,427,383,000	(70,179,000)	844,677,000	53,847,000	2,019,592,000	1,965,745,000	1,547,918,000	(76,612,000)	494,439,000	53,847,000
Beginning balance at Jun. 30, 2022	2,185,687,000	2,131,522,000	1,426,448,000	(76,825,000)	781,899,000	54,165,000	2,005,541,000	1,951,376,000	1,547,918,000	(78,513,000)	481,971,000	54,165,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Earnings	126,737,000	122,565,000			122,565,000	4,172,000	101,772,000	97,600,000			97,600,000	4,172,000
Total other comprehensive income (loss)	6,646,000	6,646,000		6,646,000			1,901,000	1,901,000		1,901,000
Dividends declared on preferred stock							(132,000)	(132,000)			(132,000)
Dividends declared on common stock	(59,655,000)	(59,655,000)			(59,655,000)		(85,000,000)	(85,000,000)			(85,000,000)
Valencia’s transactions with its owner	(4,490,000)					(4,490,000)	(4,490,000)					(4,490,000)
Ending balance at Sep. 30, 2022	2,255,728,000	2,201,881,000	1,427,383,000	(70,179,000)	844,677,000	53,847,000	2,019,592,000	1,965,745,000	1,547,918,000	(76,612,000)	494,439,000	53,847,000
Beginning balance at Dec. 31, 2022	2,244,926,000	2,191,932,000	1,429,102,000	(66,048,000)	828,878,000	52,994,000	1,960,324,000	1,907,330,000	1,547,918,000	(74,335,000)	433,747,000	52,994,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Earnings	152,613,000	138,441,000			138,441,000	14,172,000	108,404,000	94,232,000			94,232,000	14,172,000
Total other comprehensive income (loss)	3,628,000	3,628,000		3,628,000			1,465,000	1,465,000		1,465,000
Dividends declared on preferred stock							(396,000)	(396,000)			(396,000)
Dividends declared on common stock	(94,634,000)	(94,634,000)			(94,634,000)		0
Valencia’s transactions with its owner	(15,993,000)					(15,993,000)	(15,993,000)					(15,993,000)
Ending balance at Sep. 30, 2023	2,286,384,000	2,235,211,000	1,425,342,000	(62,420,000)	872,289,000	51,173,000	2,053,804,000	2,002,631,000	1,547,918,000	(72,870,000)	527,583,000	51,173,000
Beginning balance at Jun. 30, 2023	2,313,596,000	2,262,243,000	1,423,827,000	(59,235,000)	897,651,000	51,353,000	2,047,702,000	1,996,349,000	1,547,918,000	(71,076,000)	519,507,000	51,353,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Earnings	42,916,000	37,858,000			37,858,000	5,058,000	13,266,000	8,208,000			8,208,000	5,058,000
Total other comprehensive income (loss)	(3,185,000)	(3,185,000)		(3,185,000)			(1,794,000)	(1,794,000)		(1,794,000)
Dividends declared on preferred stock							(132,000)	(132,000)			(132,000)
Dividends declared on common stock	(63,088,000)	(63,088,000)			(63,088,000)		0
Valencia’s transactions with its owner	(5,238,000)					(5,238,000)	(5,238,000)					(5,238,000)
Ending balance at Sep. 30, 2023	$ 2,286,384,000	$ 2,235,211,000	$ 1,425,342,000	$ (62,420,000)	$ 872,289,000	$ 51,173,000	$ 2,053,804,000	$ 2,002,631,000	$ 1,547,918,000	$ (72,870,000)	$ 527,583,000	$ 51,173,000

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Condensed Consolidated Statements of Earnings - TNMP - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Electric Operating Revenues	$ 505,851	$ 729,888	$ 1,527,084	$ 1,673,736
Operating Expenses:
Administrative and general	58,481	58,125	167,630	165,328
Depreciation and amortization	80,192	76,570	237,405	229,103
Transmission and distribution costs	25,078	21,538	72,739	61,160
Taxes other than income taxes	22,432	22,651	72,395	71,207
Total operating expenses	419,199	547,125	1,249,011	1,336,513
Operating income	86,652	182,763	278,073	337,223
Other Income and Deductions:
Interest income	5,366	3,969	15,568	11,588
Other income	8,428	5,364	17,121	14,845
Other (deductions)	(4,555)	(1,647)	(10,562)	(7,529)
Net other income and deductions	835	(8,050)	23,942	(65,200)
Interest Charges	49,838	34,526	136,660	89,963
Earnings before Income Taxes	37,649	140,187	165,355	182,060
Income Taxes	(5,267)	13,450	12,742	16,982
Texas-New Mexico Power Company
Electric Operating Revenues	155,517	132,551	408,343	360,936
Operating Expenses:
Cost of energy	35,951	30,988	106,627	92,220
Administrative and general	13,440	12,548	40,608	35,746
Depreciation and amortization	28,357	24,960	83,746	72,914
Transmission and distribution costs	9,752	8,989	28,771	23,482
Taxes other than income taxes	11,863	11,229	31,923	30,495
Total operating expenses	99,363	88,714	291,675	254,857
Operating income	56,154	43,837	116,668	106,079
Other Income and Deductions:
Interest income	178	148	413	1,435
Other income	3,476	2,691	5,754	5,151
Other (deductions)	(1,028)	(448)	(1,658)	(848)
Net other income and deductions	2,626	2,391	4,509	5,738
Interest Charges	12,095	9,851	33,932	28,017
Earnings before Income Taxes	46,685	36,377	87,245	83,800
Income Taxes	7,181	4,946	13,076	11,258
Net Earnings Attributable to PNM	$ 39,504	$ 31,431	$ 74,169	$ 72,542

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Condensed Consolidated Statements of Cash Flows - TNMP - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash Flows From Operating Activities:
Net Earnings	$ 152,613	$ 165,078
Adjustments to reconcile net earnings to net cash flows from operating activities:
Depreciation and amortization	262,557	255,808
Deferred income tax expense	10,874	15,036
Allowance for equity funds used during construction and other, net	10,075	9,232
Changes in certain assets and liabilities:
Accounts receivable and unbilled revenues	972	(66,713)
Materials, supplies, and fuel stock	(16,657)	(6,630)
Other current assets	(77,016)	3,687
Other assets	(13,613)	6,676
Accounts payable	(12,222)	11,845
Accrued interest and taxes	9,686	17,875
Other current liabilities	116,887	(26,082)
Other liabilities	(21,980)	(32,083)
Net cash flows from operating activities	412,604	427,496
Cash Flows From Investing Activities:
Utility plant additions	(807,932)	(702,878)
Net cash flows used in investing activities	(811,877)	(711,425)
Cash Flows From Financing Activities:
Revolving credit facilities borrowings (repayments), net	173,500	(2,500)
Long-term borrowings	1,015,000	558,000
Transmission interconnection and security deposit arrangements	46,254	76,696
Refunds paid under transmission interconnection and security deposit arrangements	(19,610)	(50,401)
Debt issuance costs and other, net	(6,528)	(3,668)
Net cash flows from financing activities	402,963	288,447
Change in Cash and Cash Equivalents	3,690	4,518
Cash and Cash Equivalents at Beginning of Period	4,078	1,104
Cash and Cash Equivalents at End of Period	7,768	5,622
Supplemental Cash Flow Disclosures:
Interest paid, net of amounts capitalized	121,876	79,246
Income taxes paid (refunded), net	1,400	904
Supplemental schedule of noncash investing activities:
Decrease in accrued plant additions	46,452	56,948
Texas-New Mexico Power Company
Cash Flows From Operating Activities:
Net Earnings	74,169	72,542
Adjustments to reconcile net earnings to net cash flows from operating activities:
Depreciation and amortization	84,300	73,536
Deferred income tax expense	431	(3,587)
Allowance for equity funds used during construction and other, net	2,811	2,441
Changes in certain assets and liabilities:
Accounts receivable and unbilled revenues	(14,676)	(21,461)
Materials, supplies, and fuel stock	(4,357)	(2,821)
Other current assets	4,914	2,696
Other assets	1,322	(387)
Accounts payable	2,224	(3,791)
Accrued interest and taxes	8,559	14,449
Other current liabilities	(2,932)	7,769
Other liabilities	(650)	(4,324)
Net cash flows from operating activities	150,493	132,180
Cash Flows From Investing Activities:
Utility plant additions	(343,269)	(359,441)
Net cash flows used in investing activities	(343,269)	(359,441)
Cash Flows From Financing Activities:
Revolving credit facilities borrowings (repayments), net	3,100	2,600
Long-term borrowings	185,000	160,000
Equity contribution from parent	0	68,000
Transmission interconnection and security deposit arrangements	11,000	6,400
Refunds paid under transmission interconnection and security deposit arrangements	(3,500)	(9,000)
Debt issuance costs and other, net	(1,671)	(739)
Net cash flows from financing activities	193,929	227,261
Change in Cash and Cash Equivalents	1,153	0
Cash and Cash Equivalents at Beginning of Period	0	0
Cash and Cash Equivalents at End of Period	1,153	0
Supplemental Cash Flow Disclosures:
Interest paid, net of amounts capitalized	30,868	26,810
Income taxes paid (refunded), net	1,400	904
Supplemental schedule of noncash investing activities:
Decrease in accrued plant additions	$ 6,640	$ 24,773

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Condensed Consolidated Balance Sheets - TNMP - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current Assets:
Cash and cash equivalents	$ 7,768	$ 4,078
Accounts receivable	175,193	183,669
Unbilled revenues	68,271	63,473
Other receivables	25,719	20,320
Materials, supplies, and fuel stock	83,391	66,733
Regulatory assets	99,388	20,265
Total current assets	489,227	410,978
Other Property and Investments:
Other investments	172	177
Non-utility property, net	29,584	26,841
Total other property and investments	569,702	535,114
Utility Plant:
Plant in service, held for future use, and to be abandoned	9,344,655	9,164,564
Less accumulated depreciation and amortization	2,728,523	2,659,952
Net plant in service and plant held for future use	6,616,132	6,504,612
Construction work in progress	717,353	372,988
Net utility plant	7,410,853	6,972,823
Deferred Charges and Other Assets:
Regulatory assets	924,487	846,686
Goodwill	278,297	278,297
Operating lease right-of-use assets, net of accumulated amortization	185,989	55,982
Other deferred charges	192,286	157,497
Total deferred charges and other assets	1,581,059	1,338,462
Assets	10,050,841	9,257,377
Current Liabilities:
Short-term debt	405,500	232,000
Current installments of long-term debt	502,434	184,793
Accounts payable	157,035	215,708
Accrued interest and taxes	86,001	76,783
Regulatory liabilities	122,895	17,002
Operating lease liabilities	11,983	18,781
Other current liabilities	89,727	87,037
Total current liabilities	1,478,573	890,370
Long-term Debt, net of Unamortized Premiums, Discounts, and Debt Issuance Costs	3,902,687	3,892,594
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	859,173	822,831
Regulatory liabilities	764,360	755,202
Asset retirement obligations	228,343	223,377
Accrued pension liability and postretirement benefit cost	27,748	32,799
Operating lease liabilities	168,849	41,336
Other deferred credits	323,195	342,413
Total deferred credits and liabilities	2,371,668	2,217,958
Total liabilities	7,752,928	7,000,922
Commitments and Contingencies (Note 11)
PNM common stockholder’s equity:
Common stock ($10 par value; 12,000,000 shares authorized; issued and outstanding 6,358 shares)	1,425,342	1,429,102
Retained earnings	872,289	828,878
Total PNM common stockholder’s equity	2,235,211	2,191,932
Total liabilities and stockholders' equity	10,050,841	9,257,377
Texas-New Mexico Power Company
Current Assets:
Cash and cash equivalents	1,153	0
Accounts receivable	44,196	32,283
Unbilled revenues	20,954	18,191
Other receivables	4,833	8,552
Materials, supplies, and fuel stock	15,200	10,843
Regulatory assets	158	1,932
Prepaid and other current assets	3,246	2,346
Total current assets	89,740	74,147
Other Property and Investments:
Other investments	102	101
Non-utility property, net	14,161	14,010
Total other property and investments	14,263	14,111
Utility Plant:
Plant in service, held for future use, and to be abandoned	2,972,515	2,853,130
Less accumulated depreciation and amortization	585,329	578,157
Net plant in service and plant held for future use	2,387,186	2,274,973
Construction work in progress	232,235	63,820
Net utility plant	2,619,421	2,338,793
Deferred Charges and Other Assets:
Regulatory assets	78,380	82,745
Goodwill	226,665	226,665
Operating lease right-of-use assets, net of accumulated amortization	2,099	3,426
Other deferred charges	8,789	6,714
Total deferred charges and other assets	315,933	319,550
Assets	3,039,357	2,746,601
Current Liabilities:
Short-term debt	39,800	36,700
Current installments of long-term debt	79,921	0
Accrued interest and taxes	63,231	54,672
Regulatory liabilities	2,062	9,089
Operating lease liabilities	991	1,543
Other current liabilities	9,330	6,336
Total current liabilities	230,733	148,765
Long-term Debt, net of Unamortized Premiums, Discounts, and Debt Issuance Costs	1,180,943	1,076,875
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	173,789	164,637
Regulatory liabilities	212,613	198,213
Asset retirement obligations	880	828
Accrued pension liability and postretirement benefit cost	540	792
Operating lease liabilities	959	1,703
Other deferred credits	62,907	52,964
Total deferred credits and liabilities	451,688	419,137
Total liabilities	1,863,364	1,644,777
Commitments and Contingencies (Note 11)
PNM common stockholder’s equity:
Common stock ($10 par value; 12,000,000 shares authorized; issued and outstanding 6,358 shares)	64	64
Paid-in-capital	805,166	805,166
Retained earnings	370,763	296,594
Total PNM common stockholder’s equity	1,175,993	1,101,824
Total liabilities and stockholders' equity	3,039,357	2,746,601
Texas-New Mexico Power Company | Nonrelated Party
Current Liabilities:
Accounts payable	29,737	34,152
Texas-New Mexico Power Company | Related Party
Current Liabilities:
Accounts payable	$ 5,661	$ 6,273

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Condensed Consolidated Balance Sheets - TNMP (Parenthetical) - $ / shares	Sep. 30, 2023	Dec. 31, 2022
Common stock, shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares issued (in shares)	85,834,874	85,834,874
Common stock, shares outstanding (in shares)	85,834,874	85,834,874
Texas-New Mexico Power Company
Common stock, par value (in dollars per share)	$ 10	$ 10
Common stock, shares authorized (in shares)	12,000,000	12,000,000
Common stock, shares issued (in shares)	6,358	6,358
Common stock, shares outstanding (in shares)	6,358	6,358

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Condensed Consolidated Statements of Changes in Common Stockholder's Equity - TNMP - USD ($) $ in Thousands	Total	Texas-New Mexico Power Company	Texas-New Mexico Power Company Common Stock	Texas-New Mexico Power Company Paid-in Capital	Texas-New Mexico Power Company Retained Earnings
Beginning balance TNMP at Dec. 31, 2021		$ 941,557	$ 64	$ 737,166	$ 204,327
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		72,542			72,542
Equity contribution from parent		68,000		68,000
Ending balance TNMP at Sep. 30, 2022		1,082,099	64	805,166	276,869
Beginning balance TNMP at Jun. 30, 2022		982,668	64	737,166	245,438
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		31,431			31,431
Equity contribution from parent		68,000		68,000
Ending balance TNMP at Sep. 30, 2022		1,082,099	64	805,166	276,869
Beginning balance TNMP at Dec. 31, 2022	$ 2,191,932	1,101,824	64	805,166	296,594
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		74,169			74,169
Ending balance TNMP at Sep. 30, 2023	2,235,211	1,175,993	64	805,166	370,763
Beginning balance TNMP at Jun. 30, 2023		1,136,489	64	805,166	331,259
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		39,504			39,504
Ending balance TNMP at Sep. 30, 2023	$ 2,235,211	$ 1,175,993	$ 64	$ 805,166	$ 370,763

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Significant Accounting Policies and Responsibility for Financial Statements

9 Months Ended

Sep. 30, 2023

Accounting Policies [Abstract]

Significant Accounting Policies and Responsibility for Financial Statements

Significant Accounting Policies and Responsibility for Financial Statements

Financial Statement Preparation

In the opinion of management, the accompanying unaudited interim Condensed Consolidated Financial Statements reflect all normal and recurring accruals and adjustments that are necessary to present fairly the consolidated financial position at September 30, 2023 and December 31, 2022, and the consolidated results of operations and comprehensive income for the three and nine months ended September 30, 2023 and 2022 and cash flows for the nine months ended September 30, 2023 and 2022. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could ultimately differ from those estimated. Weather causes the Company’s results of operations to be seasonal in nature and the results of operations presented in the accompanying Condensed Consolidated Financial Statements are not necessarily representative of operations for an entire year.

The Notes to Condensed Consolidated Financial Statements include disclosures for PNMR, PNM, and TNMP. This report uses the term “Company” when discussing matters of common applicability to PNMR, PNM, and TNMP. Discussions regarding only PNMR, PNM, or TNMP are so indicated. Certain amounts in the 2022 Condensed Consolidated Financial Statements and Notes thereto have been reclassified to conform to the 2023 financial statement presentation.

These Condensed Consolidated Financial Statements are unaudited. Certain information and note disclosures normally included in the annual audited Consolidated Financial Statements have been condensed or omitted, as permitted under the applicable rules and regulations. Readers of these financial statements should refer to PNMR’s, PNM’s, and TNMP’s audited Consolidated Financial Statements and Notes thereto that are included in their respective 2022 Annual Reports on Form 10-K.

GAAP defines subsequent events as events or transactions that occur after the balance sheet date but before financial statements are issued or are available to be issued. Based on their nature, magnitude, and timing, certain subsequent events may be required to be reflected at the balance sheet date and/or required to be disclosed in the financial statements. The Company has evaluated subsequent events accordingly.

Principles of Consolidation

The Condensed Consolidated Financial Statements of each of PNMR, PNM, and TNMP include their accounts and those of subsidiaries in which that entity owns a majority voting interest. PNM also consolidates Valencia. See Note 6. PNM owns undivided interests in several jointly-owned power plants and records its pro-rata share of the assets, liabilities, and expenses for those plants. The agreements for the jointly-owned plants provide that if an owner were to default on its payment obligations, the non-defaulting owners would be responsible for their proportionate share of the obligations of the defaulting owner. In exchange, the non-defaulting owners would be entitled to their proportionate share of the generating capacity of the defaulting owner. There have been no such payment defaults under any of the agreements for the jointly-owned plants.

PNMR Services Company expenses, which represent costs that are primarily driven by corporate level activities, are charged to the business segments. These services are billed at cost and are reflected as general and administrative expenses in the business segments. Other significant intercompany transactions between PNMR, PNM, and TNMP include interest and income tax sharing payments, as well as equity transactions, and interconnection billings. See Note 15. All intercompany transactions and balances have been eliminated.

Dividends on Common Stock

Dividends on PNMR’s common stock are declared by the Board. The timing of the declaration of dividends is dependent on the timing of meetings and other actions of the Board. This has historically resulted in dividends attributable to the second quarter of each year being declared through actions of the Board during the third quarter of the year. The Board declared dividends on common stock considered to be for the second quarter of $0.3675 per share in August 2023 and $0.3475 per share in August 2022, which are reflected as being in the second quarter within Dividends Declared per Common Share on the PNMR Condensed Consolidated Statement of Earnings. The Board declared dividends on common stock for the third quarter of $0.3675 per share in September 2023 and $0.3475 per share in September 2022, which are reflected as being in the third quarter within Dividends Declared per Common Share on the PNMR Condensed Consolidated Statement of Earnings.

PNMR did not make any cash equity contributions to PNM in the three and nine months ended September 30, 2023 and 2022. PNMR made capital contributions to TNMP of zero in the three and nine months ended September 30, 2023 and $68.0 million in the three and nine months ended September 30, 2022. PNM declared and paid cash dividends on its common stock to PNMR of zero in the three and nine months ended September 2023 and $85.0 million in the three and nine months ended September 30, 2022. TNMP did not declare or pay cash dividends on its common stock to PNMR in the three and nine months ended September 30, 2023 and 2022.

New Accounting Pronouncements

Information concerning a recently issued accounting pronouncement that has not yet been adopted by the Company is presented below. The Company does not expect difficulty in adopting this standard by its required effective date.

Accounting Standards Update 2022-03 - Fair Value Measurement (Topic 820): Fair Value Measurements of Equity Securities Subject to Contractual Sale Restrictions

In June 2022, the FASB issued ASU 2022-03 clarifying that a contractual restriction on the sale of an equity security is not considered part of the unit of account of the security and, therefore, is not considered in measuring fair value. The amendment also clarifies that an entity cannot, as a separate unit of account, recognize and measure a contractual sale restriction. Disclosure requirements from the amendment include disclosure of the fair value of equity securities subject to contractual sale restrictions that are reflected in the balance sheet; the nature and remaining duration of the restriction(s); and the circumstances that could cause a lapse in the restriction(s). ASU 2022-03 is effective for the Company beginning January 1, 2024 with early adoption for both interim and annual periods being permitted. ASU 2022-03 is to be applied prospectively with any adjustments recognized in earnings and disclosed on the date of adoption.

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Segment Information

9 Months Ended

Sep. 30, 2023

Segment Reporting [Abstract]

Segment Information

Segment Information

The following segment presentation is based on the methodology that management uses for making operating decisions and assessing performance of its various business activities. A reconciliation of the segment presentation to the GAAP financial statements is provided.

PNM

PNM includes the retail electric utility operations of PNM that are subject to traditional rate regulation by the NMPRC. PNM provides integrated electricity services that include the generation, transmission, and distribution of electricity for retail electric customers in New Mexico. PNM also includes the generation and sale of electricity into the wholesale market, which includes the asset optimization of PNM’s jurisdictional capacity, as well as providing transmission services to third parties. FERC has jurisdiction over wholesale power and transmission rates.

TNMP

TNMP is an electric utility providing services in Texas under the TECA. TNMP’s operations are subject to traditional rate regulation by the PUCT. TNMP provides transmission and distribution services at regulated rates to various REPs that, in turn, provide retail electric service to consumers within TNMP’s service area. TNMP also provides transmission services at regulated rates to other utilities that interconnect with TNMP’s facilities.

Corporate and Other

The Corporate and Other segment includes PNMR holding company activities, primarily related to corporate level debt and PNMR Services Company. The activities of PNMR Development and the equity method investment in NMRD are also included in Corporate and Other. Eliminations of intercompany transactions are reflected in the Corporate and Other segment.

The following tables present summarized financial information for PNMR by segment. PNM and TNMP each operate in only one segment. Therefore, tabular segment information is not presented for PNM and TNMP.

PNMR SEGMENT INFORMATION

	PNM		TNMP		Corporate and Other		PNMR Consolidated
	(In thousands)
Three Months Ended September 30, 2023
Electric operating revenues	$	350,334	$	155,517	$	—	$	505,851
Cost of energy	174,362		35,951		—		210,313
Utility margin	175,972		119,566		—		295,538
Other operating expenses	100,739		35,055		(7,100)		128,694
Depreciation and amortization	44,537		28,357		7,298		80,192
Operating income (loss)	30,696		56,154		(198)		86,652
Interest income (expense)	5,323		178		(135)		5,366
Other income (deductions)	(7,598)		2,448		619		(4,531)
Interest charges	(22,354)		(12,095)		(15,389)		(49,838)
Segment earnings (loss) before income taxes	6,067		46,685		(15,103)		37,649
Income taxes (benefit)	(7,199)		7,181		(5,249)		(5,267)
Segment earnings (loss)	13,266		39,504		(9,854)		42,916
Valencia non-controlling interest	(5,058)		—		—		(5,058)
Subsidiary preferred stock dividends	(132)		—		—		(132)
Segment earnings (loss) attributable to PNMR	$	8,076	$	39,504	$	(9,854)	$	37,726
Nine Months Ended September 30, 2023
Electric operating revenues	$	1,118,741	$	408,343	$	—	$	1,527,084
Cost of energy	517,824		106,627		—		624,451
Utility margin	600,917		301,716		—		902,633
Other operating expenses	305,615		101,302		(19,762)		387,155
Depreciation and amortization	132,287		83,746		21,372		237,405
Operating income (loss)	163,015		116,668		(1,610)		278,073
Interest income (expense)	15,542		413		(387)		15,568
Other income	3,130		4,096		1,148		8,374
Interest charges	(61,242)		(33,932)		(41,486)		(136,660)
Segment earnings (loss) before income taxes	120,445		87,245		(42,335)		165,355
Income taxes (benefit)	12,041		13,076		(12,375)		12,742
Segment earnings (loss)	108,404		74,169		(29,960)		152,613
Valencia non-controlling interest	(14,172)		—		—		(14,172)
Subsidiary preferred stock dividends	(396)		—		—		(396)
Segment earnings (loss) attributable to PNMR	$	93,836	$	74,169	$	(29,960)	$	138,045
At September 30, 2023:
Total Assets	$	6,731,852	$	3,039,357	$	279,632	$	10,050,841
Goodwill	$	51,632	$	226,665	$	—	$	278,297

	PNM		TNMP		Corporate and Other		PNMR Consolidated
	(In thousands)
Three Months Ended September 30, 2022
Electric operating revenues	$	597,337	$	132,551	$	—	$	729,888
Cost of energy	303,351		30,988		—		334,339
Utility margin	293,986		101,563		—		395,549
Other operating expenses	108,710		32,766		(5,260)		136,216
Depreciation and amortization	45,361		24,960		6,249		76,570
Operating income (loss)	139,915		43,837		(989)		182,763
Interest income (expense)	3,888		148		(67)		3,969
Other income (deductions)	(14,443)		2,243		181		(12,019)
Interest charges	(15,467)		(9,851)		(9,208)		(34,526)
Segment earnings (loss) before income taxes	113,893		36,377		(10,083)		140,187
Income taxes (benefit)	12,121		4,946		(3,617)		13,450
Segment earnings (loss)	101,772		31,431		(6,466)		126,737
Valencia non-controlling interest	(4,172)		—		—		(4,172)
Subsidiary preferred stock dividends	(132)		—		—		(132)
Segment earnings (loss) attributable to PNMR	$	97,468	$	31,431	$	(6,466)	$	122,433
Nine Months Ended September 30, 2022
Electric operating revenues	$	1,312,800	$	360,936	$	—	$	1,673,736
Cost of energy	606,129		92,220		—		698,349
Utility margin	706,671		268,716		—		975,387
Other operating expenses	335,173		89,723		(15,835)		409,061
Depreciation and amortization	137,132		72,914		19,057		229,103
Operating income (loss)	234,366		106,079		(3,222)		337,223
Interest income (expense)	10,288		1,435		(135)		11,588
Other income (deductions)	(81,475)		4,303		384		(76,788)
Interest charges	(44,562)		(28,017)		(17,384)		(89,963)
Segment earnings (loss) before income taxes	118,617		83,800		(20,357)		182,060
Income taxes (benefit)	11,762		11,258		(6,038)		16,982
Segment earnings (loss)	106,855		72,542		(14,319)		165,078
Valencia non-controlling interest	(10,897)		—		—		(10,897)
Subsidiary preferred stock dividends	(396)		—		—		(396)
Segment earnings (loss) attributable to PNMR	$	95,562	$	72,542	$	(14,319)	$	153,785
At September 30, 2022:
Total Assets	$	6,113,416	$	2,673,546	$	241,928	$	9,028,890
Goodwill	$	51,632	$	226,665	$	—	$	278,297

Non-GAAP Financial Measures

The Company defines utility margin as electric operating revenues less cost of energy. Cost of energy consists primarily of fuel and purchase power costs for PNM and costs charged by third-party transmission providers for TNMP. The Company believes that utility margin provides a more meaningful basis for evaluating operations than electric operating revenues since substantially all such costs are offset in revenues as fuel and purchase power costs are passed through to customers under PNM’s FPPAC and third-party transmission costs are passed on to consumers through TNMP’s transmission cost recovery factor. Utility margin is not a financial measure required to be presented and is considered a non-GAAP measure. PNM and TNMP do not intend for utility margin to represent any financial measure as defined by GAAP however, the calculation of utility margin, as presented, most closely compares to gross margin as defined by GAAP. Reconciliations between utility margin and gross margin are presented below.

	PNM		TNMP		Corporate and Other		PNMR Consolidated
	(In thousands)
Three Months Ended September 30, 2023
Gross margin	$	95,721	$	81,457	$	—	$	177,178
Energy production costs	20,388		—		—		20,388
Transmission and distribution costs	15,326		9,752		—		25,078
Depreciation and amortization	44,537		28,357		—		72,894		1
Utility margin	$	175,972	$	119,566	$	—	$	295,538
Nine Months Ended September 30, 2023
Gross margin	$	356,317	$	189,199	$	—	$	545,516
Energy production costs	68,345		—		—		68,345
Transmission and distribution costs	43,968		28,771		—		72,739
Depreciation and amortization	132,287		83,746		—		216,033		1
Utility margin	$	600,917	$	301,716	$	—	$	902,633

	PNM		TNMP		Corporate and Other		PNMR Consolidated
	(In thousands)
Three Months Ended September 30, 2022
Gross margin	$	201,607	$	67,614	$	—	$	269,221
Energy production costs	34,469		—		—		34,469
Transmission and distribution costs	12,549		8,989		—		21,538
Depreciation and amortization	45,361		24,960		—		70,321		1
Utility margin	$	293,986	$	101,563	$	—	$	395,549
Nine Months Ended September 30, 2022
Gross margin	$	421,327	$	172,320	$	—	$	593,647
Energy production costs	110,534		—		—		110,534
Transmission and distribution costs	37,678		23,482		—		61,160
Depreciation and amortization	137,132		72,914		—		210,046		1
Utility margin	$	706,671	$	268,716	$	—	$	975,387

1 Corporate and Other depreciation and amortization represents corporate level activities that are billed at cost and reflected as general and administrative expenses at PNM and TNMP and therefore are not a component of gross margin or utility margin. See Note 1.

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Accumulated Other Comprehensive Income (Loss)

9 Months Ended

Sep. 30, 2023

Equity [Abstract]

Accumulated Other Comprehensive Income (Loss)

Accumulated Other Comprehensive Income (Loss)

Information regarding accumulated other comprehensive income (loss) for the nine months ended September 30, 2023 and 2022 is as follows:

	Accumulated Other Comprehensive Income (Loss)
	PNM						Corporate and Other		PNMR Consolidated
	Unrealized Gains on Available-for-Sale Debt Securities		Pension Liability Adjustment				Fair Value Adjustment for Cash Flow Hedges
					Total				Total
	(In thousands)
Balance at December 31, 2022	$	7,422	$	(81,757)	$	(74,335)	$	8,287	$	(66,048)
Amounts reclassified from AOCI (pre-tax)	(4,111)		3,582		(529)		5,286		4,757
Income tax impact of amounts reclassified	1,044		(909)		135		(1,343)		(1,208)
Other OCI changes (pre-tax)	2,491		—		2,491		(2,386)		105
Income tax impact of other OCI changes	(632)		—		(632)		606		(26)
Net after-tax change	(1,208)		2,673		1,465		2,163		3,628
Balance at September 30, 2023	$	6,214	$	(79,084)	$	(72,870)	$	10,450	$	(62,420)

Balance at December 31, 2021	$	11,715	$	(83,651)	$	(71,936)	$	—	$	(71,936)
Amounts reclassified from AOCI (pre-tax)	(3,426)		5,328		1,902		(1,767)		135
Income tax impact of amounts reclassified	870		(1,353)		(483)		449		(34)
Other OCI changes (pre-tax)	(8,170)		—		(8,170)		10,391		2,221
Income tax impact of other OCI changes	2,075		—		2,075		(2,640)		(565)
Net after-tax change	(8,651)		3,975		(4,676)		6,433		1,757
Balance at September 30, 2022	$	3,064	$	(79,676)	$	(76,612)	$	6,433	$	(70,179)

The Condensed Consolidated Statements of Earnings include pre-tax amounts reclassified from AOCI related to Unrealized Gains on Available-for-Sale Debt Securities in gains (losses) on investment securities, related to Pension Liability Adjustment in other (deductions), and related to Fair Value Adjustment for Cash Flow Hedges in interest charges. The income tax impacts of all amounts reclassified from AOCI are included in income taxes in the Condensed Consolidated Statements of Earnings.

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Earnings Per Share

9 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Dual presentation of basic and diluted earnings per share is presented in the Condensed Consolidated Statements of Earnings of PNMR. Diluted earnings per share was computed using the treasury stock method for both restricted stock and the 2023 forward sales agreements. Information regarding the computation of earnings per share is as follows:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2023		2022		2023		2022
	(In thousands, except per share amounts)
Net Earnings Attributable to PNMR	$	37,726	$	122,433	$	138,045	$	153,785
Average Number of Common Shares:
Outstanding during period	85,835		85,835		85,835		85,835
Vested awards of restricted stock	254		266		257		291
Average Shares – Basic	86,089		86,101		86,092		86,126
Dilutive Effect of Common Stock Equivalents:
Restricted stock	32		35		36		52
2023 Forward Sale Agreements	8		—		23		—
Average Shares – Diluted	86,129		86,136		86,151		86,178
Net Earnings Per Share of Common Stock:
Basic	$	0.44	$	1.42	$	1.60	$	1.79
Diluted	$	0.44	$	1.42	$	1.60	$	1.78

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Electric Operating Revenues

9 Months Ended

Sep. 30, 2023

Revenue from Contract with Customer [Abstract]

Electric Operating Revenues

Electric Operating Revenues

PNMR is an investor-owned holding company with two regulated utilities providing electricity and electric services in New Mexico and Texas. PNMR’s electric utilities are PNM and TNMP. Additional information concerning electric operating revenue is contained in Note 4 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

Accounts Receivable and Allowance for Credit Losses

Accounts receivable consists primarily of trade receivables from customers. In the normal course of business, credit is extended to customers on a short-term basis. The Company estimates the allowance for credit losses on trade receivables based on historical experience and estimated default rates. Accounts receivable balances are reviewed monthly, adjustments to the allowance for credit losses are made as necessary and amounts that are deemed uncollectible are written off. In addition to the allowance for credit losses on trade receivables, the Company has evaluated other receivables for potential credit related losses. These balances include potential exposures for other non-retail utility services. In the three and nine months ended September 30, 2023 and 2022, there were no estimated credit losses related to these transactions.

Disaggregation of Revenues

A disaggregation of revenues from contracts with customers by the type of customer is presented in the table below.

	PNM		TNMP		PNMR Consolidated
Three Months Ended September 30, 2023	(In thousands)
Electric Operating Revenues:
Contracts with customers:
Retail electric revenue
Residential	$	111,406	$	69,556	$	180,962
Commercial	106,237		41,662		147,899
Industrial	19,891		10,665		30,556
Public authority	6,099		1,708		7,807
Economy energy service	4,958		—		4,958
Transmission	37,466		34,980		72,446
Wholesale energy service	62,804		—		62,804
Miscellaneous	1,507		984		2,491
Total revenues from contracts with customers	350,368		159,555		509,923
Alternative revenue programs	(939)		(4,038)		(4,977)
Other electric operating revenues	905		—		905
Total Electric Operating Revenues	$	350,334	$	155,517	$	505,851
Nine Months Ended September 30, 2023
Electric Operating Revenues:
Contracts with customers:
Retail electric revenue
Residential	$	339,307	$	147,413	$	486,720
Commercial	309,560		114,357		423,917
Industrial	65,524		36,359		101,883
Public authority	15,822		4,996		20,818
Economy energy service	24,999		—		24,999
Transmission	124,396		100,100		224,496
Wholesale energy sales	213,098		—		213,098
Miscellaneous	4,293		2,832		7,125
Total revenues from contracts with customers	1,096,999		406,057		1,503,056
Alternative revenue programs	9,963		2,286		12,249
Other electric operating revenues	11,779		—		11,779
Total Electric Operating Revenues	$	1,118,741	$	408,343	$	1,527,084

	PNM		TNMP		PNMR Consolidated
Three Months Ended September 30, 2022	(In thousands)
Electric Operating Revenues:
Contracts with customers:
Retail electric revenue
Residential	$	150,683	$	60,878	$	211,561
Commercial	136,314		41,705		178,019
Industrial	25,609		9,450		35,059
Public authority	6,893		1,720		8,613
Economy energy service	11,784		—		11,784
Transmission	44,513		28,881		73,394
Wholesale energy sales	220,219		—		220,219
Miscellaneous	1,368		961		2,329
Total revenues from contracts with customers	597,383		143,595		740,978
Alternative revenue programs	(599)		(11,044)		(11,643)
Other electric operating revenues	553		—		553
Total Electric Operating Revenues	$	597,337	$	132,551	$	729,888
Nine Months Ended September 30, 2022
Electric Operating Revenues:
Contracts with customers:
Retail electric revenue
Residential	$	368,159	$	146,367	$	514,526
Commercial	325,492		111,365		436,857
Industrial	68,351		27,388		95,739
Public authority	16,063		4,806		20,869
Economy energy service	31,726		—		31,726
Transmission	114,699		83,731		198,430
Wholesale energy sales	365,554		—		365,554
Miscellaneous	4,043		2,887		6,930
Total revenues from contracts with customers	1,294,087		376,544		1,670,631
Alternative revenue programs	1,039		(15,608)		(14,569)
Other electric operating revenues	17,674		—		17,674
Total Electric Operating Revenues	$	1,312,800	$	360,936	$	1,673,736

Decreases in revenue in 2023 compared to 2022, reflect refunds under the SJGS abandonment settlement agreement (Note 12) and lower wholesale energy market sales through PNM’s participation in the EIM, which are passed on to customers under PNM’s FFPAC with no impact to net earnings.

Contract Balances

Performance obligations related to contracts with customers are typically satisfied when the energy is delivered and the customer or end-user utilizes the energy. Accounts receivable from customers represent amounts billed, including amounts under ARPs. For PNM, accounts receivable reflected on the Condensed Consolidated Balance Sheets, net of allowance for credit losses, includes $131.0 million at September 30, 2023 and $151.4 million at December 31, 2022 resulting from contracts with customers. All of TNMP’s accounts receivable results from contracts with customers.

Contract assets are an entity’s right to consideration in exchange for goods or services that the entity has transferred to a customer when that right is conditioned on something other than the passage of time (for example, the entity’s future performance). Upon the completion of the Western Spirit Line, PNM entered into a Transmission Service Agreement (“TSA”) with Pattern Wind under an incremental tariff rate approved by FERC. The terms of the agreement provide for a financing component that benefits the customer. As such, the revenue that PNM recognizes will be in excess of the consideration

received at the beginning of the service term resulting in a contract asset. The balance of the contract asset is $19.5 million at September 30, 2023 and $11.9 million at December 31, 2022. This contract asset is presented in Other deferred charges on the Condensed Consolidated Balance Sheets.

Contract liabilities arise when consideration is received in advance from a customer before satisfying the performance obligations. Therefore, revenue is deferred and not recognized until the obligation is satisfied. Under its Open Access Transmission Tariff (“OATT”), PNM accepts upfront consideration for capacity reservations requested by transmission customers, which requires PNM to defer the customer’s transmission capacity rights for a specific period of time. PNM recognizes the revenue of these capacity reservations over the period it defers the customer’s capacity rights. Other utilities pay PNM and TNMP in advance for the joint-use of their utility poles. These revenues are recognized over the period of time specified in the joint-use contract, typically for one calendar year. Deferred revenues on these arrangements are recorded as contract liabilities. PNMR’s, PNM’s, and TNMP’s contract liabilities and related revenues are not material for any of the periods presented. The Company has no other arrangements with remaining performance obligations to which a portion of the transaction price would be required to be allocated.

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Variable Interest Entities

9 Months Ended

Sep. 30, 2023

Variable Interest Entities [Abstract]

Variable Interest Entities

Variable Interest Entities

How an enterprise evaluates and accounts for its involvement with variable interest entities, focuses primarily on whether the enterprise has the power to direct the activities that most significantly impact the economic performance of a variable interest entity (“VIE”). This evaluation requires continual reassessment of the primary beneficiary of a VIE. Additional information concerning PNM’s VIEs is contained in Note 10 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

Valencia

PNM has a PPA to purchase all of the electric capacity and energy from Valencia, a 155 MW natural gas-fired power plant near Belen, New Mexico, through May 2028. A third party built, owns, and operates the facility while PNM is the sole purchaser of the electricity generated. PNM is obligated to pay fixed operation and maintenance and capacity charges in addition to variable operation and maintenance charges under this PPA. For the three and nine months ended September 30, 2023, PNM paid $5.1 million and $15.2 million for fixed charges and $1.4 million and $4.1 million for variable charges. For the three and nine months ended September 30, 2022, PNM paid $5.0 million and $14.6 million for fixed charges and $0.7 million and $1.1 million for variable charges. PNM does not have any other financial obligations related to Valencia. The assets of Valencia can only be used to satisfy its obligations and creditors of Valencia do not have any recourse against PNM’s assets. During the term of the PPA, PNM has the option, under certain conditions, to purchase and own up to 50% of the plant or the VIE. The PPA specifies that the purchase price would be the greater of 50% of book value reduced by related indebtedness or 50% of fair market value.

PNM sources fuel for the plant, controls when the facility operates through its dispatch, and receives the entire output of the plant, which factors directly and significantly impact the economic performance of Valencia. Therefore, PNM has concluded that the third-party entity that owns Valencia is a VIE and that PNM is the primary beneficiary of the entity since PNM has the power to direct the activities that most significantly impact the economic performance of Valencia and will absorb the majority of the variability in the cash flows of the plant. As the primary beneficiary, PNM consolidates Valencia in its financial statements. Accordingly, the assets, liabilities, operating expenses, and cash flows of Valencia are included in the Condensed Consolidated Financial Statements of PNM although PNM has no legal ownership interest or voting control of the VIE. The assets and liabilities of Valencia are set forth below and are not shown separately on the Condensed Consolidated Balance Sheets. The owner’s equity and net income of Valencia are considered attributable to non-controlling interest.

Summarized financial information for Valencia is as follows:

	Results of Operations
	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(In thousands)
Operating revenues	$	6,679	$	5,640	$	19,427	$	15,670
Operating expenses	1,621		1,468		5,255		4,773
Earnings attributable to non-controlling interest	$	5,058	$	4,172	$	14,172	$	10,897

	Financial Position
	September 30,		December 31,
	2023		2022
	(In thousands)
Current assets	$	4,162	$	3,429
Net property, plant, and equipment	47,963		50,094
Total assets	52,125		53,523
Current liabilities	952		529
Owners’ equity – non-controlling interest	$	51,173	$	52,994

Westmoreland San Juan Mining, LLC

As discussed in the subheading Coal Supply in Note 11, PNM purchased coal for SJGS under the SJGS CSA. PNM and Westmoreland also entered into agreements under which CCR disposal and mine reclamation services for SJGS would be provided. In 2019, Westmoreland emerged from Chapter 11 bankruptcy as a privately held company owned and operated by a group of its former creditors. Under the reorganization, the assets of SJCC were sold to Westmoreland San Juan Mining, LLC (“WSJ LLC”), a subsidiary of Westmoreland Mining Holdings, LLC. As successor entity to SJCC, WSJ LLC assumed all rights and obligations of SJCC including obligations to PNM under the SJGS CSA and to PNMR under letter of credit support agreements. In conjunction with the retirement of SJGS, the SJGS CSA expired under its terms on September 30, 2022.

PNMR issued $30.3 million in letters of credit to facilitate the issuance of reclamation bonds required in order for SJCC to mine coal to be supplied to SJGS. As discussed above, WSJ LLC assumed the rights and obligations of SJCC, including obligations to PNMR for the letters of credit. The letters of credit support results in PNMR having a variable interest in WSJ LLC since PNMR is subject to possible loss in the event performance by PNMR is required under the letters of credit support. PNMR considers the possibility of loss under the letters of credit support to be remote since the purpose of posting the bonds is to provide assurance that WSJ LLC performs the required reclamation of the mine site in accordance with applicable regulations and the reclamation services agreement provides WSJ LLC the ability to recover the cost of reclamation. Additionally, much of the mine reclamation activities have been and will continue to be performed after the SJGS CSA expired on September 30, 2022. As discussed in Note 11, each of the SJGS participants has established and actively fund trusts to meet future reclamation obligations.

WSJ LLC is considered a VIE.  PNMR’s analysis of its arrangements with WSJ LLC concluded that WSJ LLC had the ability to direct its mining operations and reclamation services, which are the factors that most significantly impact the economic performance of WSJ LLC.  Other than PNM being able to ensure that coal was supplied in adequate quantities and of sufficient quality to provide the fuel necessary to operate SJGS in a normal manner and monitoring of reclamation activities, the mining operations and reclamation services were solely under the control of WSJ LLC, including developing mining and reclamation plans, hiring of personnel, and incurring operating and maintenance expenses. Neither PNMR nor PNM had any ability to direct or influence the mining operation or reclamation activities.  PNM’s involvement through the SJGS CSA and the reclamation services agreement is a protective right rather than a participating right and WSJ LLC still has the power to direct the activities that most significantly impact the economic performance of WSJ LLC.  The SJGS CSA required WSJ LLC to deliver coal to fuel SJGS in exchange for payment of a set price per ton, which escalated over time for inflation.  The reclamation services agreement requires WSJ LLC to perform reclamation services at a base price per activity, which escalates over time for inflation. If WSJ LLC had been able to mine or performs reclamation services more efficiently than anticipated,

its economic performance would improve.  Conversely, if WSJ LLC had not been able to mine or does not perform reclamation services as efficiently as anticipated, its economic performance would be negatively impacted.  Accordingly, PNMR believes WSJ LLC is the primary beneficiary and, therefore, WSJ LLC is not consolidated by either PNMR or PNM. The amounts outstanding under the letters of credit support continue to be PNMR’s maximum exposure to loss from the VIE at September 30, 2023.

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Fair Value of Derivative and Other Financial Instruments

9 Months Ended

Sep. 30, 2023

Fair Value of Derivative and Other Financial Instruments [Abstract]

Fair Value of Derivative and Other Financial Instruments

Fair Value of Derivative and Other Financial Instruments

Additional information concerning energy related derivative contracts and other financial instruments is contained in Note 9 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

Fair value is defined as the price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Fair value is based on current market quotes as available and is supplemented by modeling techniques and assumptions made by the Company to the extent quoted market prices or volatilities are not available. External pricing input availability varies based on commodity location, market liquidity, and term of the agreement. Valuations of derivative assets and liabilities take into account nonperformance risk, including the effect of counterparties’ and the Company’s credit risk. The Company regularly assesses the validity and availability of pricing data for its derivative transactions. Although the Company uses its best judgment in estimating the fair value of these instruments, there are inherent limitations in any estimation technique.

Energy Related Derivative Contracts

Overview

The primary objective for the use of commodity derivative instruments, including energy contracts, options, swaps, and futures, is to manage price risk associated with forecasted purchases of energy and fuel used to generate electricity, as well as managing anticipated generation capacity in excess of forecasted demand from existing customers. PNM’s energy related derivative contracts manage commodity risk. PNM is required to meet the demand and energy needs of its customers. PNM may be exposed to market risk for the needs of its customers not covered under the FPPAC.

PNM entered into several agreements to purchase power from third parties in order to ensure that customer demand during the 2023 summer peak load was met. Agreements for purchases totaling 85 MW from June 1, 2023 through September 30, 2023 were not considered derivatives because there was either no notional amount due to their unit-contingent nature or qualified for a normal purchase, normal sale scope exception. Agreements totaling 375 MW were accounted for as derivative agreements and are considered economic hedges.

In 2021, PNM entered into three agreements to purchase power from third parties at a fixed price in order to ensure that customer demand during the 2022 summer peak load period was met. Two of the agreements, the purchase of 85 MW from June through September 2022 and the purchase of 40 MW for the full year of 2022, were not considered derivatives because there were no notional amounts due to the unit-contingent nature of the agreements. The third agreement for the purchase of 150 MW firm power in June and September 2022 were accounted for as derivative agreements and are considered economic hedges.

PNM was exposed to market risk for its 65 MW interest in SJGS Unit 4, which was held as merchant plant as ordered by the NMPRC from January 1, 2018 until September 30, 2022. PNM entered into agreements to sell power from 36 MW of that capacity to a third party at a fixed price for the period January 1, 2018 through June 30, 2022, subject to certain conditions. Under these agreements, PNM was obligated to deliver 36 MW of power only when SJGS Unit 4 was operating.  In May 2022, PNM executed a new agreement to sell 50 MW of that capacity to a third party for the period from July 1, 2022 through September 30, 2022 on a system-contingent basis. These agreements were not considered derivatives because there was no notional amount due to the unit-contingent nature of the transactions.

PNM and Tri-State had a hazard sharing agreement that expired in May 2022. Under this agreement, each party sold the other party 100 MW of capacity and energy from a designated generation resource on a unit contingent basis, subject to certain performance guarantees. The agreement was accounted for as a commodity derivative. In May 2022, PNM and Tri-State entered into another hazard sharing agreement that existed on a unit contingent basis through September 30, 2022, however this agreement did not include a performance guarantee. As a result, this agreement was not considered a derivative. Both the purchases and sales were made at the same market index price.  This agreement served to reduce the magnitude of

each party’s single largest generating hazard and assist in enhancing the reliability and efficiency of their respective operations. PNM passed the sales and purchases through to customers under PNM’s FPPAC.

PNM’s operations are managed primarily through a net asset-backed strategy, whereby PNM’s aggregate net open forward contract position is covered by its forecasted excess generation capabilities or market purchases. PNM could be exposed to market risk if its generation capabilities were to be disrupted or if its load requirements were to be greater than anticipated. If all or a portion of load requirements were required to be covered as a result of such unexpected situations, commitments would have to be met through market purchases. TNMP does not enter into energy related derivative contracts.

Commodity Risk

Marketing and procurement of energy often involve market risks associated with managing energy commodities and establishing positions in the energy markets, primarily on a short-term basis. PNM routinely enters into various derivative instruments such as forward contracts, option agreements, and price basis swap agreements to economically hedge price and volume risk on power commitments and fuel requirements and to minimize the effect of market fluctuations. PNM monitors the market risk of its commodity contracts in accordance with approved risk and credit policies.

Accounting for Derivatives

Under derivative accounting and related rules for energy contracts, PNM accounts for its various instruments for the purchase and sale of energy, which meet the definition of a derivative, based on PNM’s intent. During the nine months ended September 30, 2023 and the year ended December 31, 2022, PNM was not hedging its exposure to the variability in future cash flows from commodity derivatives through designated cash flow hedges. The derivative contracts recorded at fair value that do not qualify or are not designated for cash flow hedge accounting are classified as economic hedges. Economic hedges are defined as derivative instruments, including long-term power agreements, used to economically hedge generation assets, purchased power and fuel costs, and customer load requirements. Changes in the fair value of economic hedges are reflected in results of operations on the Condensed Consolidated Statements of Earnings and are classified between Electric operating revenues and Cost of energy according to the intent of the hedge. PNM also uses such instruments under an NMPRC approved hedging plan to manage fuel and purchased power costs related to customers covered by its FPPAC. Changes in the fair value of instruments covered by its FPPAC are recorded as Regulatory assets and Regulatory liabilities on the Condensed Consolidated Balance Sheets. The cash impacts of settled derivatives are recorded as operating activities or financing activities on the Condensed Consolidated Statement of Cash Flows consistent with the classification of the hedged transaction. PNM has no trading transactions.

Commodity Derivatives

PNM’s commodity derivative instruments that are recorded at fair value, all of which are accounted for as economic hedges and considered Level 2 fair value measurements, are presented in the following line items on the Condensed Consolidated Balance Sheets:

	Economic Hedges
	September 30, 2023		December 31, 2022
	(In thousands)
Other current assets	$	603	$	9,780
Other current liabilities	(3,514)		(19,209)
Net	$	(2,911)	$	(9,429)

Certain of PNM’s commodity derivative instruments in the above table are subject to master netting agreements whereby assets and liabilities could be offset in the settlement process. PNM does not offset fair value and cash collateral for derivative instruments under master netting arrangements and the above table reflects the gross amounts of fair value assets and liabilities for commodity derivatives.

As discussed above, PNM has NMPRC-approved guidelines for hedging arrangements to manage fuel and purchased power costs related to customers covered by its FPPAC. The table above includes $0.6 million of current assets and $3.5 million of current liabilities related to these arrangements at September 30, 2023 and $9.8 million of current assets and $19.2 million of current liabilities at December 31, 2022 with changes in fair value recorded as regulatory assets and regulatory liabilities.

At September 30, 2023 and December 31, 2022, PNM had no amounts recognized for the legal right to reclaim cash collateral. However, amounts posted as cash collateral under margin arrangements were $1.0 million at September 30, 2023 and $10.5 million at December 31, 2022. These amounts are included in other current assets on the Condensed Consolidated Balance Sheets. At September 30, 2023 and December 31, 2022, obligations to return cash collateral were $0.2 million, which is included in other current liabilities on the Condensed Consolidated Balance Sheets.

The changes in the fair value of commodity derivative instruments that are considered economic hedges had no impact on PNM’s net earnings during the nine months ended September 30, 2023 and 2022. Commodity derivatives had no impact on OCI for any of the periods presented. Commodity contract volume positions are presented in MMBTU for gas related contracts and in MWh for power related contracts. The table below presents PNM’s net buy (sell) volume positions:

	Economic Hedges
	MMBTU	MWh
September 30, 2023	—	290,295
December 31, 2022	—	432,200

In connection with managing its commodity risks, PNM enters into master agreements with certain counterparties. If PNM is in a net liability position under an agreement, some agreements provide that the counterparties can request collateral if PNM’s credit rating is downgraded; other agreements provide that the counterparty may request collateral to provide it with “adequate assurance” that PNM will perform; and others have no provision for collateral.

The table below presents information about PNM’s contingent requirement to provide collateral under certain commodity contracts having an objectively determinable collateral provision, that are in net liability positions, and that are not fully collateralized with cash. Contractual liability represents those commodity derivative contracts recorded at fair value on the balance sheet, determined on an individual contract basis without offsetting amounts for individual contracts that are in an asset position and could be offset under master netting agreements with the same counterparty. Cash collateral posted under these contracts does not reflect letters of credit under the Company’s revolving credit facilities that may have been issued as collateral. Net exposure is the net contractual liability for all contracts, including those designated as normal purchase and normal sale, offset by existing collateral and by any offsets available under master netting agreements, including both assets and liability positions.

Contingent Feature - Credit Rating Downgrade	Contractual Liability		Existing Cash Collateral		Net Exposure
	(In thousands)
September 30, 2023	$	3,514	$	—	$	3,514
December 31, 2022	$	15,288	$	—	$	13,087

Non-Derivative Financial Instruments

The carrying amounts reflected on the Condensed Consolidated Balance Sheets approximate fair value for cash, receivables, and payables due to the short period of maturity. Investment securities are carried at fair value. Investment securities consist of PNM assets held in the NDT for its share of decommissioning costs of PVNGS, a trust for PNM’s share of decommissioning costs at SJGS, and trusts for PNM’s share of final reclamation costs related to the coal mines serving SJGS and Four Corners. See Note 11. At September 30, 2023 and December 31, 2022, the fair value of investment securities included $334.0 million and $325.3 million for the NDT, $15.3 million and $14.7 million for the SJGS decommissioning trust, and $72.1 million and $77.5 million for the coal mine reclamation trusts.

PNM records a realized loss as an impairment for any available-for-sale debt security that has a fair value that is less than its carrying value. At September 30, 2023 and December 31, 2022, PNM had no available-for-sale debt securities for which carrying value exceeds fair value and there are no impairments considered to be “other than temporary” that are included in AOCI and not recognized in earnings. All gains and losses resulting from sales and changes in the fair value of equity securities are recognized immediately in earnings.

Gains and losses recognized on the Condensed Consolidated Statements of Earnings related to investment securities in the NDT, SJGS decommissioning, and coal mine reclamation trusts are presented in the following table:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2023		2022		2023		2022
	(In thousands)
Equity securities:
Net gains (losses) from equity securities sold	$	(189)	$	(2,210)	$	1,758	$	1,735
Net gains (losses) from equity securities still held	(4,946)		(4,061)		3,673		(52,320)
Total net gains (losses) on equity securities	(5,135)		(6,271)		5,431		(50,585)
Available-for-sale debt securities:
Net (losses) on debt securities	(3,269)		(9,465)		(3,616)		(33,519)
Net gains (losses) on investment securities	$	(8,404)	$	(15,736)	$	1,815	$	(84,104)

The proceeds and gross realized gains and losses on the disposition of securities held in the NDT, SJGS decommissioning trust, and coal mine reclamation trusts are shown in the following table. Realized gains and losses are determined by specific identification of costs of securities sold. Gross realized losses shown below exclude the (increase)/decrease in realized impairment losses of $(0.6) million and $2.8 million for the three and nine months ended September 30, 2023 and $(7.1) million and $(28.7) million for the three and nine months ended September 30, 2022.

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2023		2022		2023		2022
	(In thousands)
Proceeds from sales	$	137,797	$	92,371	$	412,574	$	323,251
Gross realized gains	4,022		2,366		14,464		20,089
Gross realized (losses)	(6,876)		(6,908)		(19,088)		(23,109)

At September 30, 2023, the available-for-sale debt securities held by PNM, had the following final maturities:

	Fair Value
	(In thousands)
Within 1 year	$	34,601
After 1 year through 5 years	67,254
After 5 years through 10 years	67,273
After 10 years through 15 years	18,916
After 15 years through 20 years	13,634
After 20 years	43,825
	$	245,503

Fair Value Disclosures

The Company determines the fair values of its derivative and other financial instruments based on the hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. There are three levels of inputs that may be used to measure fair value. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. Level 2 inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. Level 3 inputs are unobservable inputs for the asset or liability.

For investment securities, Level 2 and Level 3 fair values are provided by fund managers utilizing a pricing service. For Level 2 fair values, the pricing provider predominantly uses the market approach using bid side market values based upon a hierarchy of information for specific securities or securities with similar characteristics. Fair values of Level 2 investments in

mutual funds are equal to net asset value. For commodity derivatives, Level 2 fair values are determined based on market observable inputs, which are validated using multiple broker quotes, including forward price, volatility, and interest rate curves to establish expectations of future prices. Credit valuation adjustments are made for estimated credit losses based on the overall exposure to each counterparty. For the Company’s long-term debt, Level 2 fair values are provided by an external pricing service. The pricing service primarily utilizes quoted prices for similar debt in active markets when determining fair value. The valuation of Level 3 investments, when applicable, requires significant judgment by the pricing provider due to the absence of quoted market values, changes in market conditions, and the long-term nature of the assets. The Company has no Level 3 investments as of September 30, 2023 and December 31, 2022. Management of the Company independently verifies the information provided by pricing services. Items recorded at fair value by PNM on the Condensed Consolidated Balance Sheets are presented below by level of the fair value hierarchy along with gross unrealized gains on investments in available-for-sale debt securities:

			GAAP Fair Value Hierarchy
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Unrealized Gains
	(In thousands)
September 30, 2023
Cash and cash equivalents	$	37,930	$	37,930	$	—
Equity securities:
Corporate stocks, common	71,359		71,359		—
Corporate stocks, preferred	4,523		509		4,014
Mutual funds and other	62,062		62,062		—
Available-for-sale debt securities:
U.S. government	40,256		37,987		2,269		$	1,637
International government	10,498		—		10,498		738
Municipals	48,364		—		48,364		139
Corporate and other	146,385				146,385		5,853
	$	421,377	$	209,847	$	211,530	$	8,367
December 31, 2022
Cash and cash equivalents	$	66,843	$	66,843	$	—
Equity securities:
Corporate stocks, common	40,103		40,103		—
Corporate stocks, preferred	5,191		790		4,401
Mutual funds and other	66,359		66,359		—
Available-for-sale debt securities:
U.S. government	45,905		45,645		260		$	1,334
International government	9,762		—		9,762		1,117
Municipals	43,136		—		43,136		1,062
Corporate and other	140,177		—		140,177		6,473
	$	417,476	$	219,740	$	197,736	$	9,986

The carrying amounts and fair values of long-term debt, all of which are considered Level 2 fair value measurements and are not recorded at fair value on the Condensed Consolidated Balance Sheets, are presented below:

	Carrying Amount		Fair Value
September 30, 2023	(In thousands)
PNMR	$	4,405,121	$	3,933,137
PNM	2,145,200		1,868,133
TNMP	1,260,864		1,065,003
December 31, 2022
PNMR	$	4,077,387	$	3,726,195
PNM	2,000,900		1,789,186
TNMP	1,076,875		937,009

The carrying amount and fair value of the Company’s other investments presented on the Condensed Consolidated Balance Sheets are not material and not shown in the above table.

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Stock-Based Compensation

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation

Stock-Based Compensation

PNMR has various stock-based compensation programs, which provide restricted stock awards under the Performance Equity Plan (“PEP”). Although certain PNM and TNMP employees participate in the PNMR plans, PNM and TNMP do not have separate employee stock-based compensation plans. Certain restricted stock awards are subject to achieving performance or market targets. Other awards of restricted stock are only subject to time vesting requirements. Restricted stock expected to be awarded under the PEP for performance periods ending after 2023 no longer have market targets. Additional information concerning stock-based compensation under the PEP is contained in Note 12 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

Restricted stock under the PEP refers to awards of stock subject to vesting, performance, or market conditions rather than to shares with contractual post-vesting restrictions. Generally, the awards vest ratably over three years from the grant date of the award. However, awards with performance or market conditions vest upon satisfaction of those conditions. In addition, plan provisions provide that upon retirement, participants become 100% vested in certain stock awards. The vesting period for awards of restricted stock to non-employee members of the Board is one-year.

The stock-based compensation expense related to restricted stock awards without performance or market conditions to participants that are retirement eligible on the grant date is recognized immediately at the grant date and is not amortized. Compensation expense for other such awards is amortized over the shorter of the requisite vesting period or the period until the participant becomes retirement eligible. Compensation expense for performance-based shares is recognized ratably over the performance period as required service is provided and is adjusted periodically to reflect the level of achievement expected to be attained. Compensation expense related to market-based shares is recognized ratably over the measurement period, regardless of the actual level of achievement, provided the employees meet their service requirements. At September 30, 2023, PNMR had unrecognized expense related to stock awards of $5.5 million, which is expected to be recognized over an average of 2.2 years.

The grant date fair value for restricted stock and stock awards with internal PNMR performance targets is determined based on the market price of PNMR common stock on the date of the agreements reduced by the present value of future dividends that will not be received prior to vesting. The grant date fair value is applied to the total number of shares that are anticipated to vest, although the number of performance shares that ultimately vest cannot be determined until after the performance periods end. The grant date fair value of stock awards with market targets were determined using Monte Carlo simulation models, which provide grant date fair values that include an expectation of the number of shares to vest at the end of the measurement period.

The following table summarizes the weighted-average assumptions used to determine the awards grant date fair value:

	Nine Months Ended September 30,
Restricted Shares and Performance Based Shares	2023			2022
Expected quarterly dividends per share	$	0.3675		$	0.3475
Risk-free interest rate	4.46		%	1.46		%

The following table summarizes activity in restricted stock awards, including performance-based and market-based shares for the nine months ended September 30, 2023:

	Restricted Stock
	Shares	Weighted- Average Grant Date Fair Value
Outstanding at December 31, 2022	182,446	$	42.09
Granted	194,453	45.00
Released	(197,424)	43.99
Forfeited	(1,222)	42.57
Outstanding at September 30, 2023	178,253	$	43.31

PNMR’s current stock-based compensation program provides for performance targets through 2025 and market targets through 2023. Included, as granted and released, in the table above are 100,991 previously awarded shares that were earned for the 2020 - 2022 performance measurement period and ratified by the Board in February 2023 (based upon achieving targets at above “target”, below “maximum” levels). Excluded from the table above are 143,837, 149,898, and 141,885 shares for the three-year performance periods ending in 2023, 2024 and 2025 that will be awarded if all performance and market criteria are achieved at maximum levels and all executives remain eligible.

The following table provides additional information concerning restricted stock activity, including performance-based and market-based shares:

	Nine Months Ended September 30,
Restricted Stock	2023		2022
Weighted-average grant date fair value	$	45.00	$	41.04
Total fair value of restricted shares that vested (in thousands)	$	9,635	$	7,804

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Financing

9 Months Ended

Sep. 30, 2023

Debt Disclosure [Abstract]

Financing

Financing

The Company’s financing strategy includes both short-term and long-term borrowings. The Company utilizes short-term revolving credit facilities, as well as cash flows from operations, to provide funds for both construction and operating expenditures. Depending on market and other conditions, the Company will periodically sell long-term debt or enter into term loan arrangements and use the proceeds to reduce borrowings under the revolving credit facilities or refinance other debt. Each of the Company’s revolving credit facilities, term loans, and other debt agreements contains a single financial covenant that requires the maintenance of a debt-to-capitalization ratio. For the PNMR agreements, this ratio must be maintained at less than or equal to 70%, and for the PNM and TNMP agreements, this ratio must be maintained at less than or equal to 65%. The Company’s revolving credit facilities, term loans, and other debt agreements generally also contain customary covenants, events of default, cross-default provisions, and change-of-control provisions. PNM must obtain NMPRC approval for any financing transaction having a maturity of more than 18 months. In addition, PNM files its annual informational financing filing and short-term financing plan with the NMPRC. Additional information concerning financing activities is contained in Note 7 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

On August 25, 2023, PNM formed PNM Energy Transition Bond Company I, LLC (“ETBC I”), a wholly owned special purpose subsidiary for the limited purpose of purchasing, owning, and administering energy transition property, issuing Securitized Bonds, and performing related activities. PNM expects ETBC I to issue $343.2 million principal amount of

Securitized Bonds in the fourth quarter of 2023. See Note 12 for additional information regarding the SJGS Abandonment Application.

On May 16, 2023, PNM filed a shelf registration statement that provides for the issuance of up to $650.0 million of SUNs that expires in May 2026.

On March 2, 2022, PNMR filed a shelf registration that provides for the issuance of various types of debt and equity securities. The PNMR shelf registration statement expires in March 2025.

Financing Activities

On June 30, 2023, PNMR entered into a $500.0 million term loan agreement (the “PNMR 2023 Term Loan”) among PNMR, the lenders party thereto, and Wells Fargo Bank, N.A., as administrative agent. The PNMR 2023 Term Loan matures on June 30, 2026 and bears interest at a variable rate, which was 6.77% at September 30, 2023. The proceeds were used to prepay an equal amount of the PNMR 2021 Delayed Draw Term Loan, without penalty.

At December 31, 2022, PNM had $130.0 million of 1.10% PCRBs outstanding with a mandatory remarketing date of June 1, 2023, issued by the City of Farmington, New Mexico with a final maturity of June 2040. On June 1, 2023, PNM remarketed the $130.0 million to new investors at 3.90% with a mandatory tender date of June 1, 2028.

At December 31, 2022, PNM had $55.0 million aggregate principal amount of its 3.15% SUNs outstanding due May 2023. On May 15, 2023, PNM repaid the $55.0 million 3.15% SUNs.

On April 28, 2023, PNM entered into an agreement (the “PNM 2023 Note Purchase Agreement”) with institutional investors for the sale and issuance of $200.0 million aggregate principal amount of two series of SUNs (the “PNM 2023 SUNs”) offered in private placement transactions. The PNM 2023 SUNs were issued on April 28, 2023. PNM issued $150.0 million of the PNM 2023 SUNs at 5.51%, due April 28, 2035, and another $50.0 million at 5.92%, due April 28, 2053. Proceeds from the PNM 2023 SUNs were used to repay borrowings under the PNM Revolving Credit Facility and the PNM New Mexico Credit Facility, for funding of capital expenditures, and for general corporate purposes. The PNM 2023 Note Purchase Agreement includes the customary covenants discussed above. In the event of a change of control, PNM will be required to offer to prepay the PNM 2023 SUNs at par. Although there are customary change of control provisions in the PNM debt agreements, the change of control provisions in these agreements, including the PNM 2023 Note Purchase Agreement, are not triggered by the closing of the Merger. PNM has the right to redeem any or all of the PNM 2023 SUNs prior to their maturities, subject to payment of a customary make-whole premium.

On April 28, 2023, TNMP entered into an agreement (the “TNMP 2023 Bond Purchase Agreement”) with institutional investors for the sale of $185.0 million aggregate principal amount of two series of TNMP first mortgage bonds (the “TNMP 2023 Bonds”) offered in private placement transactions. TNMP issued the first series of $130.0 million on April 28, 2023, at a 5.01% interest rate, due April 28, 2033. The second series of $55.0 million was issued on July 28, 2023, at a 5.47% interest rate, due July 28, 2053. The proceeds were used to repay borrowings under the TNMP Revolving Credit Facility, for funding of capital expenditures, and for other corporate purposes. The TNMP 2023 Bonds are subject to continuing compliance with the representations, warranties and covenants set forth in the supplemental indentures governing the TNMP 2023 Bonds. The terms of the supplemental indentures governing the TNMP 2023 Bonds include the customary covenants discussed above. In the event of a change of control, TNMP will be required to offer to prepay the TNMP 2023 Bonds at par. However, the definition of change of control in the supplemental indentures governing the TNMP 2023 Bonds will not be triggered by the close of the Merger. TNMP has the right to redeem any or all of the TNMP 2023 Bonds prior to their maturity, subject to payment of a customary make-whole premium.

On November 10, 2022, PNMR entered into a distribution agreement with BofA Securities, Inc., MUFG Securities Americas Inc. and Wells Fargo Securities, LLC, as sales agents and Bank of America, N.A., MUFG Securities EMEA plc and Wells Fargo Bank, N.A., as forward purchasers, pursuant to which the Company may sell, from time to time, up to an aggregate sales price of $200.0 million of its common stock, no par value, through the sales agents (the “PNMR 2022 ATM Program”).

During the first quarter of 2023, PNMR entered into forward sale agreements with each of Bank of America, N.A. and Wells Fargo Bank, N.A. as forward purchasers relating to the sale of 504,452 and 528,082 shares of common stock, respectively, under the PNMR 2022 ATM Program (the “2023 Q1 Forward Sale Agreements”). The average initial forward sale price of $48.49 per share and $48.30 per share, respectively, are subject to adjustments based on a net interest rate factor and by future dividends paid on PNMR common stock as specified in the 2023 Q1 Forward Sale Agreements. During the second

quarter of 2023, PNMR entered into additional forward sale agreements with MUFG Securities EMEA plc as forward purchaser relating to the sale of 1,049,116 shares of common stock under the PNMR 2022 ATM Program (the “2023 Q2 Forward Sale Agreements”). The average initial forward sale price of $45.49 per share is subject to adjustments based on a net interest rate factor and by future dividends paid on PNMR common stock as specified in the 2023 Q2 Forward Sale Agreements. During the third quarter of 2023, PNMR entered into an additional forward sale agreement with Wells Fargo Bank, N.A. as forward purchaser relating to the sale of 2,283,860 shares of common stock under the PNMR 2022 ATM Program (the “2023 Q3 Forward Sale Agreement”, and together with the 2023 Q1 Forward Sale Agreements and the 2023 Q2 Forward Sale Agreements, the “2023 Forward Sale Agreements”). The average initial forward sale price of $44.03 per share is subject to adjustments based on a net interest rate factor and by future dividends paid on PNMR common stock as specified in the 2023 Q3 Forward Sale Agreement. PNMR did not initially receive any proceeds upon the execution of the 2023 Forward Sale Agreements and, except in certain specified circumstances, has the option to elect physical, cash, or net share settlement of the forward sale agreements on or before a date that is 12 months from the agreement effective dates.

The Company expects to receive proceeds from the sale of shares upon future physical settlement(s) of the 2023 Forward Sale Agreements, in which case the Company will deliver newly issued shares to the forward purchasers in exchange for cash in an amount equal to the number of shares delivered multiplied by the then-applicable forward sale price. PNMR also has the option to net settle the agreements in cash or shares of PNMR common stock. Under a net cash settlement, under which no PNMR common stock would be issued, PNMR would receive net proceeds for a decrease in the market value of PNMR’s common stock relative to the then-applicable forward sales price per share, or would owe cash in the event of an increase in the market value of PNMR common stock. Under a net share settlement, PNMR would not receive any cash proceeds and may be required to deliver a sufficient number of shares of PNMR common stock to satisfy its obligation to the forward purchasers. The number of shares to be delivered to the forward purchasers would be based on the increase in PNMR’s common stock price relative to the then-applicable forward sales price per share. The forward sale agreements meet the derivative scope exception requirements for contracts involving an entity’s own equity. Until settlement of the forward sale agreements, PNMR’s EPS dilution resulting from the agreements, if any, will be determined using the treasury stock method, which will result in dilution during periods when the average market price of PNMR stock during the reporting period is higher than the applicable forward sales price as of the end of that period. As of September 30, 2023, all $200.0 million of common stock available for sale under the PNMR 2022 ATM Program has been sold, thus concluding the program, and no shares have been settled under the 2023 Forward Sale Agreements.

On August 5, 2022, PNM entered into a $225.0 million delayed-draw term loan agreement (the “PNM 2022 Delayed-Draw Term Loan”), among PNM, the lenders parties thereto, and Royal Bank of Canada, as administrative agent. PNM initially drew $180.0 million to repay the $75.0 million PNM 2021 Term Loan ahead of its December 2022 maturity and for other corporate purposes. On September 30, 2022, PNM drew the remaining $45.0 million and used the proceeds for general corporate purposes. Draws on the PNM 2022 Delayed-Draw Term Loan bear interest at a variable rate, which was 6.18% at September 30, 2023 and must be repaid on or before February 5, 2024.

On April 27, 2022, TNMP entered into an agreement (the “TNMP 2022 Bond Purchase Agreement”) with institutional investors for the sale of $160.0 million aggregate principal amount of two series of TNMP first mortgage bonds (the “TNMP 2022 Bonds”) offered in private placement transactions. TNMP issued the first series of $65.0 million of the TNMP 2022 Bonds on May 12, 2022, at a 4.13% interest rate, due May 12, 2052, and the second series of $95.0 million of the TNMP 2022 Bonds on July 28, 2022, at a 3.81% interest rate, due July 28, 2032. The proceeds were used to repay borrowings under the TNMP Revolving Credit Facility and for other corporate purposes. The TNMP 2022 Bonds are subject to continuing compliance with the representations, warranties and covenants set forth in the supplemental indentures governing the TNMP 2022 Bonds. The terms of the supplemental indentures governing the TNMP 2022 Bonds include the customary covenants discussed above. In the event of a change of control, TNMP will be required to offer to prepay the TNMP 2022 Bonds at par. However, the definition of change of control in the supplemental indentures governing the TNMP 2022 Bonds will not be triggered by the close of the Merger. TNMP has the right to redeem any or all of the TNMP 2022 Bonds prior to their maturity, subject to payment of a customary make-whole premium.

At December 31, 2021, PNM had $104.5 million PCRBs outstanding with a mandatory remarketing date of June 1, 2022, consisting of $36.0 million at 1.05% issued by the Maricopa County, Arizona Pollution Control Corporation with a final maturity of January 2038; $37.0 million at 2.125% issued by the City of Farmington, New Mexico with a final maturity of June 2040; $11.5 million at 1.20% issued by the City of Farmington, New Mexico with a final maturity of June 2040; and $20.0 million at 2.45% issued by the City of Farmington, New Mexico with a final maturity of September 2042. On June 1, 2022, PNM remarketed to new investors the $36.0 million and $37.0 million series in the tax-exempt market at 3.00% with a

mandatory put date of June 1, 2024. PNM purchased and redeemed the remaining two series of PCRBs, totaling $31.5 million, on June 1, 2022.

At September 30, 2023, variable interest rates were 6.37% on the PNMR 2021 Delayed-Draw Term Loan that matures in May 2025, 6.77% on the PNMR 2023 Term Loan that matures in June 2026, and 6.18% on the PNM 2022 Delayed-Draw Term Loan that matures in February 2024.

Hedging Arrangements

PNMR has entered into hedging agreements that establish a fixed rate for the indicated amount of variable rate debt, above which a customary spread is applied, which is subject to change if there is a change in PNMR’s credit rating. As of September 30, 2023, PNMR’s hedging agreements are as follows:

		Variable Rate		Established
Effective Date	Maturity Date	Debt Hedged		Fixed Rate
		(In millions)		(Percent)
March 17, 2023	September 30, 2023	$	150.0	4.57	%
October 31, 2022	December 31, 2023	100.0		4.65
October 31, 2022	December 31, 2023	100.0		4.66
September 30, 2022	December 31, 2023	100.0		4.17
September 30, 2022	December 31, 2023	100.0		4.18
May 20, 2022	December 31, 2023	100.0		2.52
May 2, 2022	December 31, 2023	150.0		2.65
May 2, 2022	December 31, 2023	200.0		2.65
January 1, 2024	December 31, 2024	100.0		3.32
January 1, 2024	December 31, 2024	100.0		3.32
January 1, 2024	December 31, 2024	100.0		3.38
January 1, 2024	December 31, 2024	150.0		3.62
January 1, 2024	December 31, 2024	150.0		3.57

These hedge agreements are accounted for as cash flow hedges. The fair value of these hedges was a gain of $14.0 million at September 30, 2023, $4.0 million of which is included in Other current assets and $10.0 million of which is included in Other deferred charges on the Condensed Consolidated Balance Sheets. The fair value was determined using Level 2 inputs under GAAP, including using forward SOFR curves under the mid-market convention to discount cash flows over the remaining term of the agreements.

Short-term Debt and Liquidity

Currently, the PNMR Revolving Credit Facility has a financing capacity of $300.0 million and the PNM Revolving Credit Facility has a financing capacity of $400.0 million. On May 20, 2022, both PNMR and PNM extended the facilities to October 31, 2024 with two one-year extension options that, if exercised, would extend the maturity through October 2026, subject to approval by a majority of the lenders. On January 26, 2023, PNMR and PNM exercised one of the one-year extension options in their respective agreements, extending their maturities through October 2025; provided that, effective November 1, 2024, the capacity of the PNMR Revolving Credit Facility will adjust to $285.0 million and the PNM Revolving Credit Facility will adjust to $380.0 million because one lender in each facility did not agree to the one-year extension through October 2025. Also on May 20, 2022, the $40.0 million PNM New Mexico Credit Facility was extended to May 20, 2026. On March 11, 2022, the TNMP Revolving Credit Facility, with a capacity of $75.0 million and secured by $75.0 million aggregate principal amount of TNMP first mortgage bonds, was amended to extend the maturity to September 23, 2024, with two one-year extension options that, if exercised, would extend the maturity to September 2026, subject to approval by a majority of the lenders. The amended TNMP Revolving Credit Facility also contained an accordion feature that would allow TNMP to increase the size of the revolver from $75.0 million to $100.0 million, subject to certain conditions. On May 13, 2022, TNMP exercised the accordion feature and increased the capacity of the TNMP Revolving Credit Facility to $100.0 million, secured by $100.0 million aggregate principal amount of TNMP first mortgage bonds. On January 26, 2023, TNMP exercised one of the one-year extension options on its credit facility, which extended the maturity to September 23, 2025. Variable interest rates under the PNMR, PNM, and TNMP revolving credit facilities are based on SOFR.

Short-term debt outstanding consists of:

	September 30, 2023			December 31, 2022
	Balance Outstanding		Weighted Average Interest Rate	Balance Outstanding		Weighted Average Interest Rate
	(In thousands)			(In thousands)
PNM:
PNM Revolving Credit Facility	$	126,900	6.68%	$	145,900	5.67%
PNM New Mexico Credit Facility	40,000		6.67	40,000		5.68
	166,900			185,900
TNMP Revolving Credit Facility	39,800		6.29	36,700		5.29
PNMR Revolving Credit Facility	198,800		6.92	9,400		5.90
	$	405,500		$	232,000

In addition to the above borrowings, PNMR, PNM, and TNMP had letters of credit outstanding of $3.1 million, zero, and zero at September 30, 2023 that reduce the available capacity under their respective revolving credit facilities. PNMR also had $30.3 million of letters of credit outstanding under the WFB LOC Facility. The above table excludes intercompany debt. As of September 30, 2023, PNM, TNMP, and PNMR Development had zero, zero, and $0.1 million in intercompany borrowings from PNMR. As of December 31, 2022, neither PNM, TNMP, nor PNMR Development had any intercompany borrowings from PNMR. PNMR had zero and $5.3 million in intercompany borrowings from PNMR Development at September 30, 2023 and December 31, 2022.

The Company’s debt arrangements have various maturities and expiration dates. PNM has $225.0 million from the PNM 2022 Delayed Draw Term Loan that is due in February 2024 and $198.0 million of PCRBs that mature in June 2024. TNMP has $80.0 million of FMBs that are due in July 2024. Additional information on debt maturities is contained in Note 7 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

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Pension and Other Postretirement Benefit Plans

9 Months Ended

Sep. 30, 2023

Retirement Benefits [Abstract]

Pension and Other Postretirement Benefit Plans

Pension and Other Postretirement Benefit Plans

PNMR and its subsidiaries maintain qualified defined benefit pension plans, postretirement benefit plans providing medical and dental benefits, and executive retirement programs (collectively, the “PNM Plans” and “TNMP Plans”). PNMR maintains the legal obligation for the benefits owed to participants under these plans. The periodic costs or income of the PNM Plans and TNMP Plans are included in regulated rates to the extent attributable to regulated operations. The Company presents the service cost component of its net periodic benefit costs in administrative and general expenses and the non-service costs components in other income (deductions), net of amounts capitalized or deferred to regulatory assets and liabilities, on the Condensed Consolidated Statements of Earnings. PNM and TNMP receive a regulated return on the amounts funded for pension and OPEB plans in excess of accumulated periodic cost or income to the extent included in retail rates (a “prepaid pension asset”).

Additional information concerning pension and OPEB plans is contained in Note 11 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K. Annual net periodic benefit cost for the plans is actuarially determined using the methods and assumptions set forth in that note and is recognized ratably throughout the year. Differences between TNMP’s annual net periodic costs (income) and amounts included in its regulated rates are deferred to regulatory assets or liabilities, for recovery or refund in future rate proceedings.

PNM Plans

The following table presents the components of the PNM Plans’ net periodic benefit cost:

	Three Months Ended September 30,
	Pension Plan				OPEB Plan				Executive Retirement Program
	2023		2022		2023		2022		2023		2022
	(In thousands)
Components of Net Periodic Benefit Cost
Service cost	$	—	$	—	$	—	$	2	$	—	$	—
Interest cost	5,913		4,215		675		479		135		90
Expected return on plan assets	(7,299)		(7,140)		(1,242)		(1,088)		—		—
Amortization of net loss	2,646		3,948		—		—		38		81
Amortization of prior service cost	—		—		—		—		—		—
Net Periodic Benefit Cost (Income)	$	1,260	$	1,023	$	(567)	$	(607)	$	173	$	171
	Nine Months Ended September 30,
	Pension Plan				OPEB Plan				Executive Retirement Program
	2023		2022		2023		2022		2023		2022
	(In thousands)
Components of Net Periodic Benefit Cost
Service cost	$	—	$	—	$	—	$	6	$	—	$	—
Interest cost	17,740		12,643		2,027		1,437		405		270
Expected return on plan assets	(21,897)		(21,422)		(3,727)		(3,264)		—		—
Amortization of net loss	7,937		11,846		—		—		114		245
Amortization of prior service cost	—		—		—		—		—		—
Net Periodic Benefit Cost (Income)	$	3,780	$	3,067	$	(1,700)	$	(1,821)	$	519	$	515

PNM did not make any contributions to its pension plan trust in the nine months ended September 30, 2023 and 2022 and does not anticipate making any contributions to the pension plan in 2023 through 2026 based on current law, funding requirements, and estimates of portfolio performance. In 2027, PNM does anticipate making a contribution of $0.4 million based on current law, funding requirements, and estimates of portfolio performance. Funding assumptions were developed using a discount rate of 5.7%. Actual amounts to be funded in the future will be dependent on the actuarial assumptions at that time, including the appropriate discount rate. PNM may make additional contributions at its discretion. PNM did not make any cash contributions to the OPEB trust in the nine months ended September 30, 2023 and 2022, however, a portion of the disbursements attributable to the OPEB trust is paid by PNM and are therefore considered to be contributions to the OPEB plan. Payments by PNM on behalf of the PNM OPEB plan were less than $0.1 million and $0.1 million for the three and nine months ended September 30, 2023 and $0.9 million and $2.4 million for the three and nine months ended September 30, 2022. These payments are expected to total $0.2 million in 2023 and $9.0 million for 2024-2027. Disbursements under the executive retirement program, which are funded by PNM and considered to be contributions to the plan, were $0.4 million and $1.0 million in the three and nine months ended September 30, 2023 and $0.4 million and $1.0 million in the three and nine months ended September 30, 2022 and are expected to total $1.3 million during 2023 and $4.5 million for 2024-2027.

TNMP Plans

The following table presents the components of the TNMP Plans’ net periodic benefit cost:

	Three Months Ended September 30,
	Pension Plan				OPEB Plan				Executive Retirement Program
	2023		2022		2023		2022		2023		2022
	(In thousands)
Components of Net Periodic Benefit Cost
Service cost	$	—	$	—	$	5	$	9	$	—	$	—
Interest cost	601		430		106		77		3		2
Expected return on plan assets	(674)		(618)		(120)		(104)		—		—
Amortization of net (gain) loss	110		233		(190)		(130)		—		—
Amortization of prior service cost	—		—		—		—		—		—
Net Periodic Benefit Cost (Income)	$	37	$	45	$	(199)	$	(148)	$	3	$	2
	Nine Months Ended September 30,
	Pension Plan				OPEB Plan				Executive Retirement Program
	2023		2022		2023		2022		2023		2022
	(In thousands)
Components of Net Periodic Benefit Cost
Service cost	$	—	$	—	$	16	$	27	$	—	$	—
Interest cost	1,802		1,290		319		231		9		8
Expected return on plan assets	(2,023)		(1,854)		(361)		(312)		—		—
Amortization of net (gain) loss	329		699		(570)		(390)		—		—
Amortization of prior service cost	—		—		—		—		—		—
Net Periodic Benefit Cost (Income)	$	108	$	135	$	(596)	$	(444)	$	9	$	8

TNMP did not make any contributions to its pension plan trust in the nine months ended September 30, 2023 and 2022 and does not anticipate making any contributions to the pension plan in 2023 through 2027 based on current law, funding requirements, and estimates of portfolio performance. Funding assumptions were developed using a discount rate of 5.8%. Actual amounts to be funded in the future will depend on the actuarial assumptions at that time, including the appropriate discount rate. TNMP may make additional contributions at its discretion. TNMP did not make any contributions to the OPEB trust in the three and nine months ended September 30, 2023 and 2022 and does not expect to make contributions to the OPEB trust during the period 2023-2027. Disbursements under the executive retirement program, which are funded by TNMP and considered to be contributions to the plan, were zero in the three and nine months ended September 30, 2023 and 2022 and are expected to total $0.1 million during 2023 and $0.2 million in 2024-2027.

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2023

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Overview

There are various claims and lawsuits pending against the Company. In addition, the Company is subject to federal, state, and local environmental laws and regulations and periodically participates in the investigation and remediation of various sites. In addition, the Company periodically enters into financial commitments in connection with its business operations. Also, the Company is involved in various legal and regulatory proceedings in the normal course of its business. See Note 12. It is not possible at this time for the Company to determine fully the effect of all litigation and other legal and regulatory proceedings on its financial position, results of operations, or cash flows.

With respect to some of the items listed below, the Company has determined that a loss is not probable or that, to the extent probable, cannot be reasonably estimated. In some cases, the Company is not able to predict with any degree of certainty the range of possible loss that could be incurred. The Company assesses legal and regulatory matters based on current

information and makes judgments concerning their potential outcome, giving due consideration to the nature of the claim, the amount and nature of any damages sought, and the probability of success. Such judgments are made with the understanding that the outcome of any litigation, investigation, or other legal proceeding is inherently uncertain. The Company records liabilities for matters where it is probable a loss has been incurred and the amount of loss is reasonably estimatable. The actual outcomes of the items listed below could ultimately differ from the judgments made and the differences could be material. The Company cannot make any assurances that the amount of reserves or potential insurance coverage will be sufficient to cover the cash obligations that might be incurred as a result of litigation or regulatory proceedings. Except as otherwise disclosed, the Company does not expect that any known lawsuits, environmental costs, or commitments will have a material effect on its financial condition, results of operations, or cash flows.

Additional information concerning commitments and contingencies is contained in Note 16 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

Commitments and Contingencies Related to the Environment

Nuclear Spent Fuel and Waste Disposal

Nuclear power plant operators are required to enter into spent fuel disposal contracts with the DOE that require the DOE to accept and dispose of all spent nuclear fuel and other high-level radioactive wastes generated by domestic power reactors. Although the Nuclear Waste Policy Act required the DOE to develop a permanent repository for the storage and disposal of spent nuclear fuel by 1998, the DOE announced that it would not be able to open the repository by 1998 and sought to excuse its performance of these requirements. In November 1997, the DC Circuit issued a decision preventing the DOE from excusing its own delay but refused to order the DOE to begin accepting spent nuclear fuel. Based on this decision and the DOE’s delay, a number of utilities, including APS (on behalf of itself and the other PVNGS owners, including PNM), filed damages actions against the DOE in the Court of Federal Claims. The lawsuits filed by APS alleged that damages were incurred due to DOE’s continuing failure to remove spent nuclear fuel and high-level waste from PVNGS. In August 2014, APS and the DOE entered into a settlement agreement that established a process for the payment of claims for costs incurred through December 31, 2019. APS has accepted the DOE’s extensions of the settlement agreement for recovery of costs incurred through December 31, 2025. Under the settlement agreement, APS must submit claims annually for payment of allowable costs. PNM records estimated claims on a quarterly basis. The benefit from the claims is passed through to customers under the FPPAC.

PNM estimates that it will incur approximately $59.6 million (in 2019 dollars) for its share of the costs related to the on-site interim storage of spent nuclear fuel at PVNGS during the term of the operating licenses. PNM accrues these costs as a component of fuel expense as the nuclear fuel is consumed. At September 30, 2023 and December 31, 2022, PNM had a liability for interim storage costs of $11.2 million and $12.0 million, which is included in other deferred credits.

PVNGS has sufficient capacity at its on-site Independent Spent Fuel Storage Installation (“ISFSI”) to store all of the nuclear fuel that will be irradiated during the initial operating license period, which ends in December 2027.  Additionally, PVNGS has sufficient capacity at its on-site ISFSI to store a portion of the fuel that will be irradiated during the period of extended operation, which ends in November 2047.  If uncertainties regarding the U.S. government’s obligation to accept and store spent fuel are not favorably resolved, APS will evaluate alternative storage solutions that may obviate the need to expand the ISFSI to accommodate all of the fuel that will be irradiated during the period of extended operation.

The Energy Transition Act

New Mexico state law Senate Bill 489, known as the Energy Transition Act (“ETA”) became effective as of June 14, 2019 and sets a statewide standard that requires investor-owned electric utilities to have specified percentages of their electric-generating portfolios be from renewable and zero-carbon generating resources. The ETA requires utilities operating in New Mexico to have renewable portfolios equal to 40% by 2025, 50% by 2030, 80% by 2040, and 100% zero-carbon energy by 2045. The ETA also allows for the recovery of undepreciated investments and decommissioning costs related to qualifying EGUs that the NMPRC has required be removed from retail jurisdictional rates, provided replacement resources to be included in retail rates have lower or zero-carbon emissions. The ETA requires the NMPRC to review and approve utilities’ annual renewable portfolio plans to ensure compliance with the RPS. The ETA also directs the New Mexico Environmental Improvement Board to adopt standards of performance that limit CO2 emissions to no more than 1,100 lbs. per MWh beginning January 1, 2023 for new or existing coal-fired EGUs with original installed capacities exceeding 300 MW.

The ETA provides for a transition from fossil-fuel generation resources to renewable and other carbon-free resources through certain provisions relating to the abandonment of coal-fired generating facilities. These provisions include the use of energy transition bonds, which are designed to be highly rated bonds that can be issued to finance certain costs of abandoning coal-fired facilities that are retired prior to January 1, 2023 for facilities operated by a “qualifying utility,” or prior to January 1, 2032 for facilities that are not operated by a qualifying utility. The amount of energy transition bonds that can be issued to recover abandonment costs is limited to the lesser of $375.0 million or 150% of the undepreciated investment of the facility as of the abandonment date. Proceeds provided by energy transition bonds must be used only for purposes related to providing utility service to customers and to pay energy transition costs (as defined by the ETA). These costs may include plant decommissioning and coal mine reclamation costs provided those costs have not previously been recovered from customers or disallowed by the NMPRC or by a court order. Proceeds from energy transition bonds may also be used to fund severances for employees of the retired facility and related coal mine and to promote economic development, education and job training in areas impacted by the retirement of the coal-fired facilities. Energy transition bonds must be issued under a NMPRC-approved financing order, are secured by “energy transition property,” are non-recourse to the issuing utility, and are repaid by a non-bypassable charge paid by all customers of the issuing utility. These customer charges are subject to an adjustment mechanism designed to provide for timely and complete payment of principal and interest due under the energy transition bonds.

The ETA also provides that utilities must obtain NMPRC approval of competitively procured replacement resources that shall be evaluated based on their cost, economic development opportunity, ability to provide jobs with comparable pay and benefits to those lost upon retirement of the facility, and that do not exceed emissions thresholds specified in the ETA. In determining whether to approve replacement resources, the NMPRC must give preference to resources with the least environmental impacts, those with higher ratios of capital costs to fuel costs, and those located in the school district of the abandoned facility. The ETA also provides for the procurement of energy storage facilities and gives utilities discretion to maintain, control, and operate these systems to ensure reliable and efficient service.

The ETA has had and will have a significant impact on PNM’s future generation portfolio, including PNM’s retirement of SJGS in 2022 and the potential early exit of Four Corners (subject to regulatory approval). PNM cannot predict the full impact of the ETA or the outcome of its pending and potential future generating resource abandonment and replacement resource filings with the NMPRC. See additional discussion in Note 12 of PNM’s SJGS and Four Corners Abandonment Applications.

The Clean Air Act

Regional Haze

In 1999, EPA developed a regional haze program and regional haze rules under the CAA. The rule directs each of the 50 states to address regional haze. Pursuant to the CAA, states are required to establish goals for improving visibility in national parks and wilderness areas (also known as Class I areas) and to develop long-term strategies for reducing emissions of air pollutants that cause visibility impairment in their own states and for preventing degradation in other states. States must establish a series of interim goals to ensure continued progress by adopting a new SIP every ten years. In the first SIP planning period, states were required to conduct BART determinations for certain covered facilities, including utility boilers, built between 1962 and 1977 that have the potential to emit more than 250 tons per year of visibility impairing pollution. If it was demonstrated that the emissions from these sources caused or contributed to visibility impairment in any Class I area, BART must have been installed by the beginning of 2018. For all future SIP planning periods, states must evaluate whether additional emissions reduction measures may be needed to continue making reasonable progress toward natural visibility conditions.

In 2017, EPA published revisions to the regional haze rule in the Federal Register. The new rule delayed the due date for the next cycle of SIPs from 2019 to 2021, altered the planning process that states must employ in determining whether to impose “reasonable progress” emission reduction measures, and gave new authority to federal land managers to seek additional emission reduction measures outside of the states’ planning process. Finally, the rule made several procedural changes to the regional haze program, including changes to the schedule and process for states to file 5-year progress reports. EPA’s new rule was challenged by numerous parties. On January 19, 2018, EPA filed a motion to hold the case in abeyance in light of several letters issued by EPA on January 17, 2018 to grant various petitions for reconsideration of the 2017 rule revisions. EPA’s decision to revisit the 2017 rule is not a determination on the merits of the issues raised in the petitions.

In 2018, EPA released a new guidance document on tracking visibility progress for the second planning period. EPA is allowing states discretion to develop SIPs that may differ from EPA’s guidance as long as they are consistent with the CAA and other applicable regulations. In 2019, EPA finalized the draft guidance that was previously released as a companion to the regional haze rule revisions, and EPA clarified that guidance in a memorandum issued in 2021. SIPs for the second planning

period were due in July 2021, which deadline NMED was unable to meet. NMED is currently preparing its SIP for the second compliance period and has notified PNM that it will not be required to submit a regional haze four-factor analysis for SJGS since PNM retired its share of SJGS in 2022. On April 7, 2022, EPA announced its intent to make findings by August 31, 2022 of the states that have failed to submit regional haze implementation plans for the second planning period and directed states to file their plans by August 15, 2022 to avoid inclusion in that finding. Despite that announcement, on April 13, 2022, four environmental groups sued EPA in the U.S. District Court for the Northern District of California seeking to compel EPA to issue a finding that 34 states failed to submit regional haze SIPs for the second planning period. On August 30, 2022, EPA published in the Federal Register an official “Finding of Failure to Submit” for states, including New Mexico, that have not yet submitted a round 2 regional haze SIP. This action by EPA starts a 2-year clock for it to issue a Federal Implementation Plan (FIP). NMED’s current timeline indicates the proposed SIP will be submitted to EPA by October 2023.

Carbon Dioxide Emissions

In 2015, EPA established standards to limit CO2 emissions from power plants, including (1) Carbon Pollution Standards for new, modified, and reconstructed power plants; and (2) the Clean Power Plan for existing power plants.

Multiple states, utilities, and trade groups filed petitions for review in the DC Circuit to challenge both the Carbon Pollution Standards for new sources and the Clean Power Plan for existing sources in separate cases. Challengers successfully petitioned the US Supreme Court for a stay of the Clean Power Plan. However, before the DC Circuit could issue an opinion regarding either the Carbon Pollution Standards or the Clean Power Plan, the Trump Administration asked that the case be held in abeyance while the rules were reevaluated, which was granted.

In 2019, EPA repealed the Clean Power Plan, promulgated the ACE Rule, and revised the implementing regulations for all emission guidelines. EPA set the BSER for existing coal-fired power plants as heat rate efficiency improvements based on a range of “candidate technologies” that can be applied inside the fence line of an individual facility. The DC Circuit issued an order that granted motions by various petitioners, including industry groups and EPA, to dismiss the cases challenging the Clean Power Plan as moot due to EPA’s issuance of the ACE Rule.

The ACE Rule was also challenged, and on January 19, 2021, the DC Circuit issued an opinion in American Lung Association and American Public Health Association v. EPA, et al., finding that EPA misinterpreted the CAA when it determined that the language of Section 111 unambiguously barred consideration of emissions reduction options that were not applied at the source. As a result, the court vacated the ACE Rule and remanded the record back to the EPA for further consideration consistent with the court’s opinion. While the DC Circuit rejected the ACE Rule, it did not reinstate the Clean Power Plan. EPA filed a motion seeking a partial stay of the mandate as to the repeal of the Clean Power Plan, to ensure the court’s order will not render effective the now out-of-date Clean Power Plan. On February 22, 2021, the U.S. Court of Appeals for the DC Circuit granted EPA’s motion, indicating that it would withhold issuance of the mandate with respect to the repeal of the Clean Power Plan until EPA responds to the court’s remand in a new rulemaking action.

On October 29, 2021, the US Supreme Court granted four petitions for writs of certiorari of the D.C. Circuit’s decisions, and on June 30, 2022, the US Supreme Court held that the “generation shifting” approach in the Clean Power Plan exceeded the powers granted to EPA by Congress, though the Court did not address the related issue of whether Section 111 of the CAA only authorizes EPA to require measures that can be implemented entirely within the fenceline at an individual source. Of broader significance in administrative law, the Court expressly invoked the major question doctrine as a basis for rejecting EPA’s statutory interpretation. The basic principle of the major question doctrine is that, if an agency seeks to decide an issue of “vast economic or political significance,” its action must be supported by clear statutory authorization. In cases where there is no authority, courts need not defer to the agency’s statutory interpretation. The decision sets legal precedent for future rulemakings by EPA and other federal regulatory agencies whereby the agencies’ authority may be limited based upon similar reasoning.

The litigation over the Carbon Pollution Standards remains held in abeyance but could be reactivated by the parties upon a determination by the court that reconsideration of the rule has concluded.

On May 23, 2023, EPA published in the Federal Register proposed regulatory actions under CAA sections 111(b) and (d) to reduce GHGs from fossil-fueled EGUs. The proposed regulations cover: (1) New natural gas-based EGUs under section 111(b); (2) Existing large and frequently operated natural gas-based EGUs under section 111(d); and (3) Existing coal-based EGUs under section 111(d). Standards of performance for existing coal EGUs will be based on two technologies depending on retirement date: carbon capture and storage/sequestration (“CCS”) or co-firing gas in lieu of coal. For gas-based EGUs, the

standards will be based on CCS or the use of green hydrogen in lieu of natural gas. States will be required to develop SIPs to EPA that provide for the establishment, implementation and enforcement of these standards as they apply to existing sources. States may take into account remaining useful life and other factors when establishing the standards. EPA is proposing that existing coal units must start complying with their gas co-firing or CCS based standards of performance on January 1, 2030, unless they commit to retirement before 2032 (or retirement by 2035 if they also commit to a 20% annual operating limit). Existing combustion turbine units must start complying with their hydrogen or CCS based standards of performance on January 1, 2032, or January 1, 2035, depending on their subcategory, which is based on the control technology selected. The package also includes a proposed repeal of the ACE rule and revisions to the standard for modified and reconstructed units, along with a notice of public rulemaking seeking data and information about setting standards for existing smaller natural gas-based generators. Comments on the rule were due to EPA by August 8, 2023. PNM filed company-specific comments and continues to review the proposed rule and its potential impacts on the company’s fossil generation resources.

On January 27, 2021, President Biden signed an extensive Executive Order aimed at addressing climate change concerns domestically and internationally. The order is intended to build on the initial climate-related actions the Biden Administration took on January 20, 2021. It addresses a wide range of issues, including establishing climate change concerns as an essential element of U.S. foreign and security policy, identifying a process to determine the U.S. INDC under the Paris Agreement, and establishing a Special Presidential Envoy for Climate that will sit on the National Security Council. On April 22, 2021, at the Earth Day Summit, as part of the U.S.’s re-entry into the Paris Agreement, President Biden unveiled the goal to cut U.S. emissions by 50% - 52% from 2005 levels by 2030, nearly double the GHG emissions reduction target set by the Obama Administration. The 2030 goal joins President Biden’s other climate goals which include a carbon pollution-free power sector by 2035 and a net-zero emissions economy by no later than 2050.

PNM’s review of the GHG emission reductions standards that may occur as a result of legislation or regulation under the Biden Administration and in response to the court’s ruling on the ACE Rule is ongoing. PNM cannot predict the impact these standards may have on its operations or a range of the potential costs of compliance, if any.

National Ambient Air Quality Standards (“NAAQS”)

The CAA requires EPA to set NAAQS for pollutants reasonably anticipated to endanger public health or welfare. EPA has set NAAQS for certain pollutants, including NOx, SO2, ozone, and particulate matter.

NOx Standard – In 2018, EPA published the final rule to retain the current primary health-based NOx standards of which NO2 is the constituent of greatest concern and is the indicator for the primary NAAQS. EPA concluded that the current 1-hour and annual primary NO2 standards are requisite to protect public health with an adequate margin of safety. The rule became effective on May 18, 2018. The State of New Mexico has attained the current NOx NAAQS standards.

SO2 Standard – In 2019, EPA announced its final decision to retain, without changes, the primary health-based NAAQS for SO2. Specifically, EPA will retain the current 1-hour standard for SO2, which is 75 parts per billion, based on the 3-year average of the 99th percentile of daily maximum 1-hour SO2 concentrations.

On March 26, 2021, EPA published in the Federal Register the initial air quality designations for all remaining areas not yet designated under the 2010 SO2 Primary NAAQS. This is EPA’s fourth and final set of actions to designate areas of the U.S. for the 2010 SO2 NAAQS. All areas of New Mexico have been designated attainment/unclassifiable through four rounds of designations by EPA.

Ozone Standard – In 2015, EPA finalized the new ozone NAAQS and lowered both the primary and secondary 8-hour standard from 75 to 70 parts per billion. With ozone standards becoming more stringent, fossil-fueled generation units will come under increasing pressure to reduce emissions of NOx and volatile organic compounds since these are the pollutants that form ground-level ozone. On July 13, 2020, EPA proposed to retain the existing ozone NAAQS based on a review of the full body of currently available scientific evidence and exposure/risk information. EPA finalized its decision to retain the ozone NAAQS in a notice published on December 31, 2020, making it immediately effective. The Center for Biological Diversity filed a lawsuit on February 25, 2021, challenging the decision to retain the existing ozone standard. In response to lawsuits brought by states and environmental groups, on October 29, 2021, EPA filed a motion in the DC Circuit indicating it will reconsider the 2020 ozone NAAQS. In April 2022, EPA released an External Review Draft Policy Assessment for the reconsideration of the ozone NAAQS, in which EPA Staff recommended that EPA retain the existing primary and secondary ozone NAAQS. On March 15, 2023, EPA published an updated draft policy assessment and indicated the revised assessment is being developed for consideration by the EPA Administrator in reaching a decision on the reconsideration of the December

2020 decision to retain the existing ozone NAAQS. However, on August 21, 2023, EPA announced an entirely new review of the ozone standard that will incorporate the work to date on the reconsideration, likely indicating a delay in the schedule for a decision on whether the standard should be revised.

In 2015, EPA proposed a rule revising its Exceptional Events Rule, which outlines the requirements for excluding air quality data (including ozone data) from regulatory decisions if the data is affected by events outside an area’s control. The proposed rule is important in light of the more stringent ozone NAAQS final rule since western states like New Mexico and Arizona are subject to elevated background ozone transport from natural local sources, such as wildfires and stratospheric inversions, and transported via winds from distant sources in other regions or countries. EPA finalized the rule on October 3, 2016 and released related guidance in 2018 and 2019 to help implement its new exceptional events policy.

During 2017 and 2018, EPA released rules establishing area designations for ozone. In those rules, San Juan County, New Mexico, where Four Corners is located, is designated as attainment/unclassifiable and only a small area in Doña Ana County, New Mexico is designated as marginal non-attainment. Although Afton Generating Station is located in Doña Ana County, it is not located within the small area designated as non-attainment for the 2015 ozone standard. The rule became effective May 8, 2018.

NMED has responsibility for bringing the small area in Doña Ana County designated as marginal/non-attainment for ozone into compliance and will look at all sources of NOx and volatile organic compounds. NMED has submitted the required elements for the Sunland Park Ozone Non-attainment Area SIP. This includes a transportation conformity demonstration, a 2017 baseline emissions inventory and emissions statement, and an amendment to the state’s Non-attainment Permitting rules at 20.2.79 New Mexico Administrative Code to conform to EPA’s SIP Requirements Rule for 2015 Q3 NAAQS (i.e., “implementation rule”).

The SIP elements had staggered deadlines and were done in three submissions: (1) the transportation conformity demonstration was completed by the El Paso Metropolitan Planning Organization on behalf of New Mexico in 2019, which is responsible for transportation planning in that area, and the submission received concurrence from EPA and the Federal Highway Administration; (2) the emissions inventory and statement SIP was submitted to EPA in September 2020; and (3) the Non-attainment New Source Review SIP was submitted to EPA on August 10, 2021. On October 15, 2021, EPA proposed to approve New Mexico’s SIP to meet the emissions inventory and statement requirements of the CAA for the Sunland Park Ozone Non-Attainment Area.

PNM does not believe there will be material impacts to its facilities because of NMED’s non-attainment designation of the small area within Doña Ana County. Until EPA approves attainment designations for the Navajo Nation and releases a proposal to implement the revised ozone NAAQS, PNM is unable to predict what impact the adoption of these standards may have on Four Corners. With respect to EPA’s reconsideration of the 2020 decision to retain the 2015 ozone standards, it is expected to be completed by the end of 2023. PNM cannot predict the outcome of this matter.

In 2019, EPA issued findings that several states, including New Mexico, had failed to submit interstate transport SIPs for the 2015 8-hour ozone NAAQS. In response, NMED published the Public Review Draft of the New Mexico 2013 NAAQS Good Neighbor SIP that demonstrates that there are no significant contributions from New Mexico to downwind problems in meeting the federal ozone standard. On March 15, 2023, EPA Administrator Regan signed a final action indicating that an updated analysis suggests New Mexico may be significantly contributing to one or more nonattainment or maintenance areas. The action, was published on June 5, 2023, does not make any final determinations with respect to the state but indicates EPA intends to address New Mexico’s interstate transport obligations in a subsequent action.

PM Standard – On January 30, 2020, EPA published in the Federal Register a notice announcing the availability of a final Policy Assessment for the Review of the NAAQS for Particulate Matter (the “PA”). The 2020 final PA was prepared as part of the review of the primary and secondary PM NAAQS. In the 2020 final PA, EPA recommended lowering the primary annual PM 2.5 standard to between 8 µg/m3 and 10 µg/m3. However, on April 30, 2020, EPA published a proposed rule to retain the current standards for PM due to uncertainties in the data relied upon in the 2020 final PA and EPA published a notice of that final action on December 18, 2020, making it immediately effective. On January 14, 2021, several states and New York City filed a petition for review in the DC Circuit, challenging EPA’s final rule retaining the current primary and secondary PM NAAQS and a similar lawsuit was filed by the Center for Biological Diversity in the DC Circuit. On June 10, 2021, EPA announced that it will reconsider the previous administration’s December 2020 decision to retain the current primary and secondary PM NAAQS and on October 8, 2021, EPA announced the release of a new draft PA stating that available scientific evidence and technical information indicate that the current standards may not be adequate to protect public health and welfare,

as required by the CAA. On June 1, 2022, EPA issued a new final PA that likewise indicates current standards may not be adequate and that available scientific evidence could support lowering the standards.

On January 27, 2023, EPA published in the Federal Register a proposal to lower the annual fine PM standard to between 9-10 µg/m3 but retain the rest of its PM standards, including the current daily fine particulate matter standard, the daily coarse particulate matter standard, and the secondary PM standards. Although the proposal focuses on the range of 9-10 µg/m3, EPA requests comment on a range between 8-11 µg/m3, but that range does not include the current annual standard of 12 µg/m3, indicating EPA will not consider retaining the current standard. Comments on the proposal were due March 28, 2023. EPA’s current regulatory agenda indicates EPA plans to finalize the proposal in October 2023. PNM cannot predict the impacts of the outcome of future rulemaking.

Cooling Water Intake Structures

In 2014, EPA issued a rule establishing national standards for certain cooling water intake structures at existing power plants and other facilities under the Clean Water Act to protect fish and other aquatic organisms by minimizing impingement mortality (the capture of aquatic wildlife on intake structures or against screens) and entrainment mortality (the capture of fish or shellfish in water flow entering and passing through intake structures).

To minimize impingement mortality, the rule provides operators of facilities, such as Four Corners, seven options for meeting Best Technology Available (“BTA”) standards for reducing impingement. The permitting authority must establish the BTA for entrainment on a site-specific basis, taking into consideration an array of factors, including endangered species and social costs and benefits. Affected sources must submit source water baseline characterization data to the permitting authority to assist in the determination. Compliance deadlines under the rule are tied to permit renewal and will be subject to a schedule of compliance established by the permitting authority.

EPA has indicated that it is contemplating a December 31, 2023 compliance deadline. With respect to SJGS, no material changes will result given the shutdown of the plant in September of 2022.

In 2018, several environmental groups sued EPA Region IX in the U.S. Court of Appeals for the Ninth Circuit Court over EPA’s failure to timely reissue the Four Corners NPDES permit. The petitioners asked the court to issue a writ of mandamus compelling EPA Region IX to take final action on the pending NPDES permit by a reasonable date. EPA subsequently reissued the NPDES permit. The permit did not contain conditions related to the cooling water intake structure rule, as EPA determined that the facility has achieved BTA for both impingement and entrainment by operating a closed-cycle recirculation system. Several environmental groups filed a petition for review with EPA’s Environmental Appeals Board (“EAB”) concerning the reissued permit. The environmental groups alleged that the permit was reissued in contravention of several requirements under the Clean Water Act and did not contain required provisions concerning certain revised ELG, existing-source regulations governing cooling-water intake structures, and effluent limits for surface seepage and subsurface discharges from coal-ash disposal facilities. EPA withdrew the Four Corners NPDES permit in order to examine issues raised by the environmental groups. Withdrawal of the permit moots the appeal pending before the EAB. EAB thereafter dismissed the environmental groups’ appeal. EPA issued an updated NPDES permit in 2019. The permit was once again appealed to the EAB and was stayed before the effective date. Oral argument was heard on September 3, 2020. The EAB issued an order denying the petition for review on September 30, 2020. The denial was based on the EAB’s determination that the petitioners had failed to demonstrate that review of the permit was warranted on any of the grounds presented in the petition. Thereafter, the Regional Administrator of the EPA signed a notice of final permit decision, and the NPDES permit was issued on November 9, 2020. The permit became effective December 1, 2020 and will expire on November 30, 2025. On January 22, 2021, the environmental groups filed a petition for review of the EAB’s decision with the U.S. Court of Appeals for the Ninth Circuit. The September 2019 permit remains in effect pending this appeal. On March 21, 2022, EPA provided notice in the Federal Register of a proposed settlement agreement with the environmental groups. The parties subsequently executed the settlement agreement as of May 2, 2022. Under the settlement, the associated case was administratively closed through September 6, 2023, during which time a third-party consultant spent 12 months sampling discharges from Four Corners and EPA spent three months completing an analysis. PNM cannot predict whether the analysis under the settlement agreement will result in changes to the NPDES permit but does not anticipate that it will have a material impact on PNM’s financial position, results of operations, or cash flows.

Effluent Limitation Guidelines

In 2013, EPA published proposed revised wastewater ELG establishing technology-based wastewater discharge limitations for fossil fuel-fired electric power plants.  EPA signed the final Steam Electric ELG rule in 2015. The final rule,

which became effective on January 4, 2016, phased in the new, more stringent requirements in the form of effluent limits for arsenic, mercury, selenium, and nitrogen for wastewater discharged from wet scrubber systems and zero discharge of pollutants in ash transport water that must be incorporated into plants’ NPDES permits. The 2015 rule required each plant to comply between 2018 and 2023 depending on when it needs a new or revised NPDES permit.

The Steam Electric ELG rule was challenged in the U.S. Court of Appeals for the Fifth Circuit by numerous parties. In 2017, EPA signed a notice indicating its intent to reconsider portions of the rule, and the Fifth Circuit issued an order severing the issues under reconsideration and holding the case in abeyance as to those issues. However, the court allowed challenges to other portions of the rule to proceed. In 2019, the Fifth Circuit granted those challenges and issued an opinion vacating several portions of the rule, specifically those related to legacy wastewater and leachate, for which the court deemed the standards selected by EPA arbitrary and capricious.

In 2017, EPA published a final rule for postponement of certain compliance dates. The rule postponed the earliest date on which compliance with the ELG for these waste streams would be required from November 1, 2018 until November 1, 2020. In 2019, EPA published a proposed rule revising the original ELG while maintaining the compliance dates. In 2020, EPA published in the Federal Register the final Steam Electric ELG and standards for the Steam Electric Power Generating Point Source Category, revising the final 2015 guidelines for both flue gas desulfurization wastewater and bottom ash transport water. The rule requires compliance with new limits as soon as possible on or after October 13, 2021, but no later than December 31, 2025.

On August 3, 2021, EPA published notice that it will undertake a supplemental rulemaking to revise the ELG after completing its review of the rules reconsidered in 2020. As part of this process, EPA will determine whether more stringent limitations and standards are appropriate. On March 29, 2023, EPA published the proposed ELG Rule in the Federal Register. The proposed rule includes stricter limitations on bottom ash transport water, flue gas desulfurization, and coal combustion residual leachate. Also included are flexibilities for coal-powered facilities that will soon decommission or repower. With this proposed rule EPA has extended the date of decommissioning or repowering from December 31, 2028, to December 31, 2032. Comments on the proposed rule were due May 30, 2023. A final rule is expected in April 2024.

Reeves Station discharges cooling tower blowdown to a publicly owned treatment plant and no longer holds an NPDES permit; therefore, it is expected that no requirements will be imposed.

See “Cooling Water Intake Structures” above for additional discussion of Four Corners’ current NPDES permit. Four Corners may be required to change equipment and operating practices affecting boilers and ash handling systems, as well as change its waste disposal techniques during the next NPDES permit renewal in 2023. PNM is unable to predict the outcome of these matters or a range of the potential costs of compliance.

Santa Fe Generating Station

PNM and NMED are parties to agreements under which PNM has installed a remediation system to treat water from a City of Santa Fe municipal supply well and an extraction well to address gasoline contamination in the groundwater at the site of PNM’s former Santa Fe Generating Station and service center. A 2008 NMED site inspection report states that neither the source nor extent of contamination at the site has been determined and that the source may not be the former Santa Fe Generating Station. During 2013 and 2014, PNM and NMED collected additional samples that showed elevated concentrations of nitrate and volatile organic compounds in some of the monitoring wells at the site. In addition, one monitoring well contained free-phase hydrocarbon products. PNM collected a sample of the product for “fingerprint” analysis. The results of this analysis indicated the product was a mixture of older and newer fuels. The presence of newer fuels in the sample suggests the hydrocarbon product likely originated from off-site sources. In 2015, PNM and NMED entered into a memorandum of understanding to address changing groundwater conditions at the site under which PNM agreed to continue hydrocarbon investigation under the supervision of NMED. Qualified costs are eligible for payment through the New Mexico Corrective Action Fund (“CAF”), which is administered by the NMED Petroleum Storage Tank Bureau. In 2019, PNM received notice from NMED that an abatement plan for the site is required to address concentrations of previously identified compounds, unrelated to those discussed above, found in the groundwater. NMED approved PNM’s abatement plan proposal, which covers field work and reporting.

Field work related to the investigation under both the CAF and abatement plan requirements was completed and activities and findings associated with the field work were presented in two separate reports and released to stakeholders in early 2020. Subsequent field work was completed in July 2020 and two reports were released supporting PNM’s contention

that off-site sources have impacted, and are continuing to impact, the local groundwater in the vicinity of the former Santa Fe Generating Station.

PNM submitted work plans to NMED in January 2021 for review and approval. In December 2021, NMED approved both work plans and work activities were completed by the end of 2022 and a report was submitted to the NMED in the first quarter of 2023.

Groundwater sampling for the abatement plan’s first semiannual work commenced at the beginning of March 2023 and was completed in April 2023. The associated report was completed and submitted to the NMED in July 2023. In addition, the work plan for the 2023 CAF work was completed and submitted to the NMED in July 2023. NMED is expected to approve the work plan in October 2023.

The City of Santa Fe has stopped operating its well at the site, which is needed for PNM’s groundwater remediation system to operate. As a result, PNM has stopped performing remediation activities at the site. However, PNM’s monitoring and other abatement activities at the site are ongoing and will continue until the groundwater meets applicable federal and state standards or until the NMED determines remediation is not required, whichever is earlier. PNM is not able to assess the duration of this project or estimate the impact on its obligations if PNM is required to resume groundwater remediation activities at the site. PNM is unable to predict the outcome of these matters.

Coal Combustion Residuals Waste Disposal

CCRs consisting of fly ash, bottom ash, and gypsum generated from coal combustion and emission control equipment at SJGS are currently disposed of in the surface mine pits adjacent to the plant. SJGS does not operate any CCR impoundments or landfills. The NMMMD currently regulates mine reclamation activities at the San Juan mine, including placement of CCRs in the surface mine pits, with federal oversight by the OSM. APS disposes of CCRs in ponds and dry storage areas at Four Corners.  Ash management at Four Corners is regulated by EPA and the New Mexico State Engineer’s Office.

EPA’s final coal ash rule, which became effective in 2015, included a non-hazardous waste determination for coal ash and sets minimum criteria for existing and new CCR landfills and surface impoundments. In 2016, the Water Infrastructure Improvements for the Nation Act (the “WIIN Act”) was signed into law to address critical water infrastructure needs in the U.S. and contains a number of provisions related to the CCR rules. Among other things, the WIIN Act allows, but does not require, states to develop and submit CCR permit programs for EPA approval, provides flexibility for states to incorporate EPA’s final rule for CCRs or develop other criteria that are at least as protective as EPA’s final rule, and requires EPA to approve state permit programs within 180 days of submission by the state. Because states are not required to implement their own CCR permit programs, EPA will implement the permit program in states that choose not to implement a program, subject to Congressional funding. Until permit programs are in effect, EPA has authority to directly enforce the CCR rule. For facilities located within the boundaries of Native American reservations, such as the Navajo Nation where Four Corners is located, EPA is required to develop a federal permit program regardless of appropriated funds.

In 2018, EPA published a rule that constitutes “Phase One, Part One” of its ongoing reconsideration and revision of the April 17, 2015, CCR rule. The final Phase One, Part One rule includes two types of revisions. The first revision extended the deadline to allow EGUs with unlined impoundments or that fail to meet the uppermost aquifer requirement to continue to receive coal ash until October 31, 2020. This deadline was again extended by subsequent amendments. The rule also authorized a “Participating State Director” or EPA to approve suspension of groundwater monitoring requirements and to issue certifications related to the location restrictions, design criteria, groundwater monitoring, remedy selection and implementation. The rule also modified groundwater protection standards for certain constituents, which include cobalt, molybdenum, lithium, and lead without a maximum contamination level.

In 2019, EPA published a second round of revisions, which are commonly referred to as the “Phase Two” revisions. Phase Two proposed revisions to reporting and accessibility to public information, the “CCR piles” and “beneficial use” definitions and the requirements for management of CCR piles. EPA has reopened and extended the Phase Two comment period several times. EPA has not yet finalized provisions in Phase Two related to beneficial use of CCR and CCR piles. This activity is on EPA’s long-term agenda, which means EPA has no plans to address these issues in the next 12 months.

Since promulgating its Phase Two proposal, EPA has finalized two other rules addressing various CCR rule provisions. In 2019, EPA promulgated its proposed Holistic Approach to Closure Part A (“Part A”), which proposed a new deadline of August 31, 2020, for companies to initiate closure of unlined CCR impoundments. In accordance with the DC Circuit Court of Appeals’ vacatur of portions of the CCR Rule, Part A also proposed changing the classification of compacted soil-lined or clay-

lined surface impoundments from “lined” to “unlined”. In addition, Part A delineated a process for owners/operators to submit requests for alternative closure deadlines based on lack of alternate disposal capacity. EPA issued the final Part A, which became effective on September 28, 2020. This rule finalized the classification of soil-lined and clay-lined surface impoundments as unlined, thus, triggering closure or retrofit requirements for those impoundments. The final Part A also gave operators of unlined impoundments until April 11, 2021 to cease receipt of waste at these units and initiate closure.

In 2020, EPA issued the proposed Holistic Approach to Closure Part B (“Part B”), which delineated the process for owners/operators to submit alternate liner demonstrations for clay-lined surface impoundments that could otherwise meet applicable requirements. Part B also proposed regulations addressing beneficial use for closure of surface impoundments. EPA issued the final Part B rule, which became effective on December 14, 2020. This rule did not include beneficial use of CCR for closure, which EPA explains will be addressed in subsequent rulemaking actions. On May 18, 2023, EPA published a proposed rule on the regulatory requirements for inactive surface impoundments at inactive facilities including groundwater monitoring, corrective action, closure, and post-closure care requirements for all CCR management units (regardless of how or when that CCR was placed), and several technical corrections to the existing regulations. Comments on the proposed rule were due July 17, 2023. A final rule is expected April 2024. EPA intends to issue other rulemakings and finalizing parts of previously proposed rules, including a final rule in October 2024 on remaining Part B issues regarding closure options and annual reporting.

In 2020, EPA published a proposed rule establishing a federal permitting program for the handling of CCR within the boundaries of Native American reservations and in states without their own federally authorized state programs. Permits for units within the boundaries of Native American reservations would be due 18 months after the effective date of the rule. Per the Spring 2023 Regulatory Agenda EPA will issue a final rule in October 2023. EPA is coordinating with the affected permits for the three facilities with CCR disposal units located on Native American lands. PNM cannot predict the outcome of EPA’s rulemaking activity or the outcome of any related litigation, and whether or how such a ruling would affect operations at Four Corners.

The CCR rule does not cover mine placement of coal ash. OSM is expected to publish a proposed rule covering mine placement in the future and will likely be influenced by EPA’s rule and the determination by EPA that CCRs are non-hazardous. PNM cannot predict the outcome of OSM’s proposed rulemaking regarding CCR regulation, including mine placement of CCRs, or whether OSM’s actions will have a material impact on PNM’s operations, financial position, or cash flows. Based upon the requirements of the final Part A CCR rule, PNM conducted a CCR assessment at SJGS and made minor modifications at the plant to ensure that there are no facilities that would be considered impoundments or landfills under the rule. PNM would seek recovery from its retail customers of all CCR costs for jurisdictional assets that are ultimately incurred.

Utilities that own or operate CCR disposal units, such as those at Four Corners, as indicated above, were required to collect sufficient groundwater sampling data to initiate a detection monitoring program.  Four Corners completed the analysis for its CCR disposal units, which identified several units that needed corrective action or needed to cease operations and initiate closure by April 11, 2021. Work is ongoing. Four Corners continues to gather additional groundwater data and perform remedial evaluations and activities. At this time, PNM does not anticipate its share of the cost to complete these corrective actions to close the CCR disposal units, or to gather and perform remedial evaluations on groundwater at Four Corners, will have a significant impact on its operations, financial position, or cash flows.

Other Commitments and Contingencies

Coal Supply

SJGS

The Coal requirements for SJGS were supplied by WSJ LLC. Pricing under the SJGS CSA was primarily fixed, with adjustments to reflect changes in general inflation. Substantially all of SJGS’s coal costs were passed through the FPPAC. See additional discussion of PNM’s SJGS Abandonment Application Note 12. See additional discussion of the SJGS CSA in Note 17 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

Four Corners

APS purchases all of Four Corners’ coal requirements from NTEC, an entity owned by the Navajo Nation, under the Four Corners CSA that expires in 2031. The coal comes from reserves located within the Navajo Nation. The contract provides for pricing adjustments over its term based on economic indices. PNM’s share of the coal costs is being recovered through the FPPAC. In connection with the potential early exit of Four Corners, PNM would make payments to NTEC for

relief from its obligations under the coal supply agreements for Four Corners, which PNM has not proposed to recover from ratepayers. See Note 12 for additional information on PNM’s Four Corners Abandonment Application. See additional discussion of the Four Corners CSA in Note 17 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

Coal Mine Reclamation

As indicated under Coal Combustion Residuals Waste Disposal above, SJGS disposed of CCRs in the surface mine pits adjacent to the plant and Four Corners disposes of CCRs in ponds and dry storage areas.

Under the terms of the SJGS CSA, PNM and the other SJGS owners are obligated to compensate WSJ LLC for all reclamation costs associated with the supply of coal from the San Juan mine. PNM and Westmoreland have entered into an agreement under which mine reclamation services for SJGS would be provided. In 2020, a mine reclamation cost study was completed for the mine that serves SJGS. PNM’s estimate of the costs necessary to reclaim the mine that serves SJGS is subject to many assumptions, including the timing of reclamation, generally accepted practices at the time reclamation activities occur, and current inflation and discount rates. PNM cannot predict the ultimate cost to reclaim the mine that serves SJGS and would seek to recover all costs related to reclaiming the underground mine from its customers but could be exposed to additional loss related to surface mine reclamation.

A coal mine reclamation study for the mine that serves Four Corners was issued in 2019. The study reflected operation of the mine through 2031, the term of the Four Corners CSA. As discussed in Note 12, PNM remains responsible for its share of costs associated with mine reclamation under the Four Corners Purchase and Sale Agreement with NTEC. Under the agreement NTEC and PNM would complete a reclamation study providing the final mine reclamation cost estimate on the date of ownership transfer. PNM would make its final reclamation payment to NTEC based on the reclamation study and would have no further obligations regarding the mine reclamation. In 2020, PNM remeasured its Four Corners reclamation liability, determining that events and circumstances regarding Four Corners, including the Four Corners Purchase and Sale Agreement with NTEC and the Four Corners Abandonment Application indicated that it is more likely than not that PNM’s share of Four Corners coal mine reclamation obligation will be settled in 2024, rather than 2031. The Company is evaluating the facts and circumstances surrounding the potential early exit of Four Corners and will determine next steps.

Based on the most recent estimates, PNM’s remaining payments as of September 30, 2023 for mine reclamation, in future dollars, are estimated to be $56.8 million for the surface mines at both SJGS and Four Corners and $33.3 million for the underground mine at SJGS. At September 30, 2023 and December 31, 2022, liabilities, in current dollars, of $52.9 million and $62.6 million for surface mine reclamation and $28.9 million and $28.2 million for underground mine reclamation were recorded in other deferred credits.

The SJGS owners entered into a reclamation trust funds agreement to provide funding to compensate WSJ LLC for post-term reclamation obligations. The trust funds agreement requires each owner to enter into an individual trust agreement with a financial institution as trustee, create an irrevocable reclamation trust, and periodically deposit funds into the reclamation trust for the owner’s share of the mine reclamation obligation. Deposits, which are based on funding curves, must be made on an annual basis. PNM funded $10.0 million in 2022 and, based on PNM’s reclamation trust fund balance at September 30, 2023, the current funding curves indicate PNM’s required contributions to its reclamation trust fund would be zero in each of the years from 2023 through 2025.

Under the Four Corners CSA, PNM is required to fund its share of estimated final reclamation costs in annual installments into an irrevocable escrow account solely dedicated to the final reclamation cost of the surface mine at Four Corners. PNM contributed $2.4 million in 2022 and $0.2 million in 2023. As discussed above, under the terms of the Four Corners Purchase and Sale Agreement with NTEC, PNM would make additional reclamation payments in 2024 based on the facts and circumstances surrounding the potential early exit of Four Corners.

PNM recovers from retail customers reclamation costs associated with the underground mine. However, the NMPRC capped the amount collected from retail customers for final reclamation of the surface mines at $100.0 million for both SJGS and Four Corners. If future estimates increase the liability for surface mine reclamation, the excess would be expensed at that time. The impacts of changes in New Mexico state law as a result of the enactment of the ETA and regulatory determinations made by the NMPRC may also affect PNM’s financial position, results of operations, and cash flows. See additional discussion regarding PNM’s SJGS and Four Corners Abandonment Applications in Note 12. PNM is currently unable to determine the outcome of these matters or the range of possible impacts.

In connection with certain mining permits relating to the operation of the San Juan mine, Westmoreland was required to post reclamation bonds of $118.7 million with the NMMMD. In order to facilitate the posting of reclamation bonds by sureties on behalf of Westmoreland, PNMR entered into the WFB LOC Facility under which letters of credit aggregating $30.3 million have been issued.

SJGS Decommissioning

On November 9, 2021, the San Juan County Commission approved the Coal-Fired Electricity Generating Facility Demolition and Remediation Ordinance (“Ordinance 121”), requiring the full demolition of SJGS upon its complete and permanent closure. Ordinance 121 required the SJGS owners to submit a proposed demolition and remediation plan no later than three months after SJGS was retired. The SJGS owners submitted the decommissioning and remediation plan on December 28, 2022. In connection with restructuring of the SJGS ownership on December 31, 2017, PNM and the other SJGS owners entered into the San Juan Decommissioning and Trust Funds Agreement, which requires PNM to fund its ownership share of final decommissioning costs into an irrevocable trust. Under the agreement, PNM made an initial funding of $14.7 million in December 2022. The amount and timing of additional trust funding is subject to revised decommissioning cost studies and agreement among the SJGS owners. PNM has posted a surety bond in the amount of $46.0 million in connection with certain environmental decommissioning obligations and must maintain the bond or other financial assurance until those obligations are satisfied. The surety bond only represents a liability if PNM fails to deliver on its contractual liability. For information regarding the impact of Ordinance 121 on PNM’s SJGS decommissioning ARO see Note 15 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

PNM records its share of the SJGS decommissioning obligation as an ARO on its Condensed Consolidated Balance Sheets. Studies on the decommissioning costs of SJGS are performed periodically and revisions to the ARO liability are recorded. In the third quarter of 2022, a new decommissioning cost study was completed, which required PNM to remeasure its SJGS decommissioning ARO. The new study resulted in an estimated decrease to PNM’s share of the decommissioning obligation of $21.1 million, which was recorded in September 2022. Additional information concerning the Company’s SJGS decommissioning ARO is contained in Note 15 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

PVNGS Liability and Insurance Matters

Public liability for incidents at nuclear power plants is governed by the Price-Anderson Nuclear Industries Indemnity Act, which limits the liability of nuclear reactor owners to the amount of insurance available from both commercial sources and an industry-wide retrospective payment plan. The insurance limit is subject to an adjustment every five years based upon the aggregate percentage change in the Consumer Price Index. The most recent adjustment took effect on October 5, 2023. As of that date, in accordance with this act, the PVNGS participants are insured against public liability exposure for a nuclear incident up to $16.5 billion per occurrence. PVNGS maintains the maximum available nuclear liability insurance in the amount of $450 million, which is provided by American Nuclear Insurers. The remaining $16.1 billion is provided through a mandatory industry-wide retrospective assessment program. If losses at any nuclear power plant covered by the program exceed the accumulated funds, PNM could be assessed retrospective premium adjustments. Based on PNM’s current interest in each of the three PVNGS units, PNM’s maximum potential retrospective premium assessment per incident for all three units is $37.7 million, with a maximum annual payment limitation of $5.6 million, to be adjusted periodically for inflation.

The PVNGS participants maintain insurance for damage to, and decontamination of, property at PVNGS in the aggregate amount of $2.8 billion, a substantial portion of which must first be applied to stabilization and decontamination. These coverages are provided by Nuclear Electric Insurance Limited (“NEIL”). The primary policy offered by NEIL contains a sublimit of $2.25 billion for non-nuclear property damage. If NEIL’s losses in any policy year exceed accumulated funds, PNM is subject to retrospective premium adjustments of $5.1 million. The insurance coverages discussed in this and the previous paragraph are subject to certain policy conditions, sublimits, and exclusions.

XML

Regulatory and Rate Matters

9 Months Ended

Sep. 30, 2023

Regulated Operations [Abstract]

Regulatory and Rate Matters

Regulatory and Rate MattersThe Company is involved in various regulatory matters, some of which contain contingencies that are subject to the same uncertainties as those described in Note 11. Additional information concerning regulatory and rate matters is contained in Note 17 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

PNMR

Merger Regulatory Proceedings

On October 20, 2020, PNMR, Avangrid, and Merger Sub entered into the Merger Agreement pursuant to which Merger Sub will merge with and into PNMR, with PNMR surviving the Merger as a wholly-owned subsidiary of Avangrid. Among other conditions, consummation of the Merger is subject to receipt of all required regulatory approvals. In 2021, five federal agencies and the PUCT completed their reviews and approved the Merger, with the NMPRC as the only regulatory agency yet to approve the Merger. The original application before the NMPRC was filed in November 2020. For additional information on the Merger regulatory proceedings, including supplemental regulatory filings that were required due to the Merger Agreement being amended in January 2022, April 2023, and June 2023, see Note 18.

PNM

New Mexico General Rate Case

2024 Rate Change

On December 5, 2022, PNM filed an application with the NMPRC for a general increase in retail electric rates. The requested change primarily reflects investments in transmission and distribution infrastructure, largely offset by cost reductions resulting from PNM’s transition to lower-cost, clean generation resources. Key aspects of PNM’s request are:

•Recovery on total rate base of $2.7 billion, based on a calendar year 2024 FTY.

•An increase of $63.8 million in retail non-fuel revenues

•ROE of 10.25%

•Rate adjustments to resolve revenue deficiencies, including:

◦Needed investments in transmission, distribution, and generation facilities for six years of operations, covering 2019 through 2024. In particular, PNM is focused on expanding and improving its aging infrastructure to provide the underlying infrastructure crucial to a successful energy transition and to support distribution generation.

◦Cost reductions from closing SJGS and the expiration of 114 MW leased PVNGS capacity.

◦Lower-cost replacements for SJGS and PVNGS using renewable energy purchases and battery storage systems. Some of these costs will be reflected in PNM’s requested base rates, while energy purchases will flow through PNM’s FPPAC.

◦Updated depreciation rates, including new terminal dates, for natural gas plants to align with the Company’s 2040 carbon-free portfolio goal.

◦Proposed customer-oriented services, such as fee-free payment options, and increased payment location options to address the needs of customers.

◦Increasing operating costs reflecting six years of inflation, including the impacts of today’s current high inflation and the expenses that come with providing quality electric service to customers. Distribution maintenance increases also are necessary to enhance vegetation management programs to protect lines and support wildfire mitigation efforts. PNM has endeavored to keep operating costs below inflationary levels.

◦Increased energy sales and customer loads since PNM’s last filing help cover the increased cost of doing business as PNM continues the energy transition.

◦Overall cost of capital based on PNM’s actual regulatory capital structure of 52% equity / 48% debt, reflecting the increase in the ROE that shareholders require to fund new investments in PNM’s system, which is partially offset by lower cost of debt.

•Proposed ratemaking treatment of PVNGS Leased Interest and testimony supporting the prudence of PNM’s decisions to renew the five leases and repurchase 64.1 MW of PVNGS Unit 2 capacity regarding PVNGS; see PVNGS Lease Abandonment Application below.

•Proposed return of the unamortized unprotected portion of excess deferred federal income taxes to customers over a five-year period, beginning when rates from the case go into effect.

•Time-of-Day pilot proposal with the objective of incentivizing customers, through price signals, to use energy during the day when renewable generation is abundant.

The NMPRC has suspended PNM’s advice notice in the case for the statutory suspension period, until January 4, 2024 and the hearing examiners set a procedural schedule with a hearing held from September 5, 2023 through September 22, 2023.

Briefings were filed October 18, 2023 and response briefs are due October 31, 2023. PNM is unable to predict the outcome of this matter.

On January 3, 2023, a joint motion and brief for accounting order was filed with the NMPRC. NM AREA, NMPRC Staff, WRA, Bernalillo County, NEE, and CCAE (the “Joint Movants”) jointly filed the motion which asked that the NMPRC issue an accounting order for the purpose of requiring PNM to create a regulatory liability to track the costs associated with the retirement of SJGS which are currently embedded in base rates. The Joint Movants requested that the NMPRC order PNM to track all costs associated with the running and management of SJGS totaling $98.3 million annually and requested that the accounting order require PNM to create a regulatory liability to track the SJGS costs from the time Unit 1 and Unit 4 were abandoned, July 1, 2022, and October 1, 2022, respectively, until the date new rates are put into effect, and for any other relief the NMPRC deems is just and reasonable. On February 3, 2023, the hearing examiners issued an order requiring PNM to create a pure accounting order regulatory liability that tracks cost of SJGS which are currently embedded in base rates. On February 6, 2023, PNM filed a motion to permit interlocutory appeal of the hearing examiners order requiring PNM to create a pure accounting order regulatory liability. On February 10, 2023, the hearing examiners issued an order denying PNM’s interlocutory appeal and clarified that the accounting order only required PNM to track the costs of SJGS. On February 14, 2023, NM AREA, NMPRC Staff, WRA, ABCWUA, and CCAE filed a joint motion for clarification of the hearing examiners accounting order. On September 21, 2023, the NMPRC approved a unanimous settlement agreement reached by PNM and other parties resolving steps involved in the retirement of SJGS under the ETA. Under the terms of the settlement, the parties agree to remove SJGS ratemaking and prudence issues from the 2024 Rate Change. For further discussion on the retirement of SJGS and the NMPRC approved unanimous settlement including the associated accounting impacts see SJGS Abandonment Application discussion below.

Renewable Energy Portfolio Standard

As discussed in Note 11, the ETA amends the REA including removal of diversity requirements and certain customer caps and exemptions relating to the application of the RPS under the REA. The REA provides for streamlined proceedings for approval of utilities’ renewable energy procurement plans, assures that utilities recover costs incurred consistent with approved procurement plans, and requires the NMPRC to establish a Reasonable Cost Threshold (“RCT”) for the procurement of renewable resources to prevent excessive costs being added to rates. The ETA sets a RCT of $60 per MWh, adjusted for inflation, using an average annual levelized resource cost basis. PNM makes renewable procurements consistent with the NMPRC approved plans and recovers certain renewable procurement costs from customers through the renewable energy rider billed on a KWh basis.

Included in PNM’s approved procurement plans are the following renewable energy resources:

•158 MW of PNM-owned solar-PV facilities

•A PPA through 2044 for the output of New Mexico Wind, having a current aggregate capacity of 200 MW, and a PPA through 2035 for the output of Red Mesa Wind, having an aggregate capacity of 102 MW

•A PPA through 2040 for 140 MW of output from La Joya Wind II

•A PPA through 2042 for the output of the Lightning Dock Geothermal facility with a current capacity of 11 MW

•Solar distributed generation, aggregating 273.9 MW at September 30, 2023, owned by customers or third parties from whom PNM purchases any net excess output and RECs

The NMPRC has authorized PNM to recover certain renewable procurement costs through a rate rider billed on a per KWh basis. In its 2023 renewable energy procurement plan, which became effective on January 1, 2023, PNM proposed to collect $61.0 million for the year. PNM recorded revenues from the rider of $13.0 million and $47.0 million in the three and nine months ended September 30, 2023 and $12.7 million and $44.5 million in the three and nine months ended September 30, 2022. On June 1, 2023, PNM filed its renewable energy procurement plan for 2024 which proposes to collect $59.0 million for the year. PNM is not proposing any new resource procurements, and the plan states that existing projects are anticipated to exceed the applicable RPS standards of 2024. On June 30, 2023, the hearing examiners issued a procedural order in this proceeding with a hearing held on September 1, 2023. On October 19, 2023, the hearing examiners issued a recommended decision recommending approval of all PNM’s requests.

Under the renewable rider, if PNM’s earned rate of return on jurisdictional equity in a calendar year, adjusted for items not representative of normal operations, exceeds the NMPRC-approved rate by 0.5%, PNM is required to refund the excess to customers during May through December of the following year. On March 31, 2023, PNM filed an affidavit that provides documentation that PNM’s ROE for 2022 was 10.173%, exceeding a 10.075% return (9.575% allowed ROE plus 0.5%). PNM began refunding the excess to customers effective May 1, 2023.

Energy Efficiency and Load Management

Program Costs and Incentives/Disincentives

The New Mexico Efficient Use of Energy Act (“EUEA”) requires public utilities to achieve specified levels of energy savings and to obtain NMPRC approval to implement energy efficiency and load management programs. The EUEA requires the NMPRC to remove utility disincentives to implementing energy efficiency and load management programs and to provide incentives for such programs. The NMPRC has adopted a rule to implement this act. PNM’s costs to implement approved programs and incentives are recovered through a rate rider. During the 2019 New Mexico legislative session, the EUEA was amended to, among other things, include a decoupling mechanism for disincentives, preclude a reduction to a utility’s ROE based on approval of disincentive or incentive mechanisms, establish energy savings targets for the period 2021 through 2025, and require that annual program funding be 3% to 5% of an electric utility’s annual customer bills excluding gross receipt taxes, franchise and right-of-way access fees, provided that a customer’s annual cost does not exceed seventy-five thousand dollars.

On April 15, 2020, PNM filed an application for energy efficiency and load management programs to be offered in 2021, 2022, and 2023. The proposed program portfolio consists of twelve programs with a total annual budget of $31.4 million in 2021, $31.0 million in 2022, and $29.6 million in 2023. The application also sought approval of an annual base incentive of 7.1% of the portfolio budget if PNM were to achieve energy savings of at least 80 GWh in a year. The proposed incentive would increase if PNM is able to achieve savings greater than 94 GWh in a year. On October 28, 2020, the NMPRC issued an order approving PNM’s proposed efficiency and load management program.

On April 17, 2023, PNM filed an application for energy efficiency and load management programs to be offered in 2024, 2025, and 2026 (the “2024 Plan”). The 2024 Plan proposes to continue ten existing energy efficiency programs with modification and a total annual budget of $34.5 million in 2024, $35.4 million in 2025, and $36.5 million in 2026. The application also sought approval of an annual base incentive of 7.1% of the portfolio budget and a sliding scale that provides additional incentive for additional energy saved as a percentage of program cost, up to the maximum allowed by the energy efficiency rule which for PNM is 8.82%. On April 26, 2023, the NMPRC appointed a hearing examiner. On May 19, 2023, the hearing examiner issued an order setting out a procedural schedule with a hearing held on October 18, 2023. PNM is unable to predict the outcome of this matter.

2020 Decoupling Petition

As discussed above, the legislature amended the EUEA to, among other things, include a decoupling mechanism for disincentives. On May 28, 2020, PNM filed a petition for approval of a rate adjustment mechanism that would decouple the rates of its residential and small power rate classes. Decoupling is a rate design principle that severs the link between the recovery of fixed costs of the utility through volumetric charges. On July 13, 2020, NEE, ABCWUA, the City of Albuquerque, and Bernalillo County filed motions to dismiss the petition on the grounds that approving PNM’s proposed rate adjustment mechanism outside of a general rate case would result in retroactive ratemaking and piecemeal ratemaking. The motions to dismiss also alleged that PNM’s proposed rate adjustment mechanism is inconsistent with the EUEA. On October 2, 2020, PNM requested an order to vacate the public hearing, scheduled to begin October 13, 2020, and staying the proceeding until the NMPRC decides whether to entertain a petition to issue a declaratory order resolving the issues raised in the motions to dismiss. On October 7, 2020, the hearing examiner approved PNM’s request to stay the proceeding and vacate the public hearing and required PNM to file a petition for declaratory order by October 30, 2020. On October 30, 2020, PNM filed a petition for declaratory order asking the NMPRC to issue an order finding that full revenue decoupling is authorized by the EUEA. On November 4, 2020, ABCWUA and Bernalillo County jointly filed a competing petition asking the NMPRC to issue a declaratory order on the EUEA’s requirements related to disincentives. On March 17, 2021, the NMPRC issued an order granting the petitions for declaratory order, commencing a declaratory order proceeding to address the petitions and appointing a hearing examiner to preside over the declaratory order proceeding.

On January 14, 2022, the hearing examiner issued a recommended decision recommending the NMPRC find that the EUEA does not mandate the NMPRC to authorize or approve a full decoupling mechanism, defining full decoupling as limited to energy efficiency and load management measures and programs. The recommended decision also states that a utility may request approval of a rate adjustment mechanism to remove regulatory disincentives to energy efficiency and load management measures and programs through a stand-alone petition, as part of the utility’s triennial energy efficiency application or a general rate case and that PNM is not otherwise precluded from petitioning for a rate adjustment mechanism prior to its next general rate case. Finally, the recommended decision stated that the EUEA does not permit the NMPRC to reduce a utility’s ROE based on approval of a disincentive removal mechanism founded on removing regulatory disincentives to energy efficiency and

load management measures and programs. The recommended decision does not specifically prohibit a downward adjustment to a utility’s capital structure, based on approval of a disincentive removal mechanism. On April 27, 2022, the NMPRC issued an order adopting the recommended decision in its entirety. On May 24, 2022, PNM filed a notice of appeal with the NM Supreme Court. The NM Supreme Court has scheduled oral arguments to be held on November 13, 2023. PNM cannot predict the outcome of this matter.

FPPAC Continuation Application

NMPRC rules require public utilities to file an application to continue using their FPPAC every four years. On June 17, 2022, PNM filed the required continuation application and requested that its FPPAC be continued without modification. On January 27, 2023, the hearing examiner issued a recommended decision recommending that the FPPAC Continuation Application be consolidated into the 2024 Rate Change and on March 1, 2023, the NMPRC issued an order adopting the hearing examiner’s recommended decision. The FPPAC Continuation Application is now consolidated into the 2024 Rate Change and the procedural schedule for this matter was vacated.

Integrated Resource Plans

NMPRC rules require that investor-owned utilities file an IRP every three years. The IRP is required to cover a 20-year planning period and contain an action plan covering the first four years of that period. On September 14, 2022, the NMPRC adopted revisions to the IRP Rule. The new rule revamps and modernizes the planning process to accommodate increased stakeholder involvement. The IRP Rule establishes a collaborative facilitated process for a utility and stakeholders to agree on a statement of need for potential new or additional resources, as well as an action plan to guide procurement or development of resources to meet the stated need. A most-cost-effective portfolio of resources shall be derived from the statement of need analysis. The statement of need and action plan must be accepted before the utility begins the resource solicitation process pursuant to the IRP Rule. Following acceptance of the statement of need and action plan, a utility will provide the NMPRC and intervenors drafts of the request for proposals (“RFP”) and a timeline for issuing, receiving, evaluating, and ranking bids. The NMPRC will then appoint an Independent Monitor (“IM”) to oversee the RFP process, which allows for parties and the IM to comment on the RFP consistency with the IRP, after which the utility issues the RFP. Within 75 days of receiving bids the utility shall provide the IM with results including pricing and non-price evaluation criteria, ranking of bids, chosen portfolio and alternatives that also meet the needs; the IM then rules on the fairness of the RFP execution. Acceptance of the statement of need and action plan will not constitute a finding of prudency or pre-approval of costs associated with the additional resources. Following the RFP and IM processes, the utility may apply approvals, and any costs incurred to implement the action plan will be considered in a general rate case and/or resource acquisition proceeding. On October 14, 2022, PNM and other investor-owned utilities filed motions for rehearing with the NMPRC. On October 26, 2022, the NMPRC issued an order partially granting and partially denying certain aspects of PNM’s and the other investor-owned utilities’ motions for rehearing. On November 2, 2022, the NMPRC adopted an amended IRP Rule. On December 2, 2022, PNM filed an appeal with the NM Supreme Court. Two other investor-owned utilities also separately filed appeals at the NM Supreme Court. On January 3, 2023, PNM and the two other investor-owned utilities filed statements of issues with the NM Supreme Court. Among other things, the investor-owned utilities question whether the IRP Rule exceeds the NMPRC authority by imposing unauthorized requirements on utilities and extending NMPRC jurisdictional through over-broad interpretation of the statutes and state that the IRP Rule is contrary to law in its provisions for NMPRC regulation of a utility’s resource procurement decision-making. On June 5, 2023, PNM and the other two investor-owned utilities filed their Joint Brief in Chief and request for oral arguments at the NM Supreme Court. PNM cannot predict the outcome of this matter.

2023 IRP

On March 1, 2023, the NMPRC issued an order granting PNM’s Motion for Extension of time to file its 2023 IRP until December 15, 2023, and the deadline for commencing the facilitated stakeholder process, which commenced on June 15, 2023.

Abandonment Applications made under the ETA

As discussed in Note 11, the ETA provides for a transition from fossil-fueled generating resources to renewable and carbon-free resources by allowing utilities to issue energy transition bonds related to the retirement of certain coal-fired generating facilities, to qualified investors.

SJGS Abandonment Application

In 2019, PNM filed a Consolidated Application for the Abandonment and Replacement of SJGS and Related Securitized Financing Pursuant to the ETA (the “SJGS Abandonment Application”). The SJGS Abandonment Application sought NMPRC approval to retire PNM’s share of SJGS after the coal supply and participation agreements end in 2022, for approval of replacement resources, and for the issuance of approximately $361 million of energy transition bonds (the “Securitized Bonds”). PNM’s request for the issuance of Securitized Bonds included approximately $283 million of forecasted undepreciated investments in SJGS at June 30, 2022, an estimated $28.6 million for plant decommissioning and coal mine reclamation costs, approximately $9.6 million in upfront financing costs, and approximately $20.0 million for job training and severance costs for affected employees. Proceeds from the Securitized Bonds would also be used to fund approximately $19.8 million for economic development in the Four Corners area. The NMPRC issued an order requiring the SJGS Abandonment Application be considered in two proceedings: one addressing SJGS abandonment and related financing, and the other addressing replacement resources.

In 2020, the NMPRC approved PNM’s proposed abandonment of SJGS, subject to approval of replacement resources, and approved PNM’s proposed financing order to issue Securitized Bonds up to $361 million and establish a rate rider to collect non-bypassable customer charges for repayment of the bonds, subject to bi-annual adjustments (the “Energy Transition Charge”).  The NMPRC authorized an interim rate rider adjustment upon the start date of the Energy Transition Charge to provide immediate credits to customers for the full value of PNM’s revenue requirement related to SJGS until those reductions are reflected in base rates. The NMPRC also granted PNM authority to establish regulatory assets to recover costs that PNM will pay prior to the issuance of the Securitized Bonds, including costs associated with the bond issuances as well as for severances, job training, economic development, and workforce training. In addition, the NMPRC authorized PNM to record regulatory assets for certain other abandonment costs that are not specifically addressed under the provisions of the ETA to preserve its ability to recover the costs in a future general rate case, but the authority only extends to the deferral of the costs and is not approval of any ratemaking treatment. Later that year, the NMPRC issued an order approving replacement resource selection criteria identified in the ETA.

On February 28, 2022, WRA and CCAE filed a joint motion for order to show cause and enforce financing order and supporting brief, which requested that the NMPRC order PNM to show cause why its rates should not be reduced at the time SJGS was abandoned. The NMPRC issued an order appointing hearing examiners to conduct a hearing and to issue a recommended decision to address the issues raised by the motion.

On June 17, 2022, the hearing examiners issued a recommended decision requesting the NMPRC issue an order that would require PNM to:

•Revise its rates to remove all of the costs of SJGS Unit 1 by issuing rate credits of $21.1 million on an annual basis, to customers by July 1, 2022

•Revise its rates again, to remove all costs of SJGS Unit 1, Unit 4, and common facilities by increasing the rate credits to $98.3 million on an annual basis, by October 1, 2022

•Transfer payments due and owing to the Indian Affairs Fund, Economic Development Assistance Fund, and the Displaced Workers Assistance Fund within 30 days of the abandonment of SJGS Unit 1

•Include (in its next rate case application) an explanation and defense of the prudence in the timing of the issuance of Securitized Bonds beyond the abandonment dates and what actions were taken to protect customers from interest rate increases occurring as well as the continued marketability of the Securitized Bonds issued

On June 29, 2022, the NMPRC issued its final order adopting and approving the recommended decision in its entirety with certain additions. The additions to the final order include requirements for PNM file a report, no later than October 15, 2022, that contains a record of all its costs incurred in the show cause proceeding so that the prudence of those costs will be known and be subject to review in PNM’s future rate case and that the prudency review shall include a compliance filing to enable a review of the prudence of PNM’s decision to delay bond issuance beyond the dates of the SJGS abandonment. On June 29, 2022, PNM filed an Emergency Motion and Supporting Brief for Stay with the NMPRC, which was denied. On June 30, 2022, PNM filed a Notice of Appeal and an Emergency Motion for Partial Interim Stay of the NMPRC’s Final Order with the NM Supreme Court. Subsequently, on July 25, 2022, PNM filed another emergency motion seeking an immediate and ongoing stay from the NM Supreme Court for the pendency of the appeal. In the interim, PNM began issuing rate credits effective July 31, 2022, and PNM made payments totaling $19.8 million to the Indian Affairs Fund, Economic Development Assistance Fund, and the Displaced Workers Assistance Fund. On September 2, 2022, the NM Supreme Court issued an order granting PNM’s July 25, 2022 motion for partial stay and as a result PNM suspended issuing rate credits. On October 14, 2022,

PNM made its required compliance filing under the NMPRC’s June 29, 2022 final order. On November 1, 2022, the NM Supreme Court issued an order continuing the partial stay of the rate credits during the pendency of the appeal. On November 15, 2022, PNM filed a supplemental compliance filing to its October 14, 2022 compliance filing. On May 22, 2023, PNM filed its Brief in Chief with the NM Supreme Court requesting the final order be vacated, and remanded back to the NMPRC, to properly apply the ETA and financing order to issue Securitized Bonds.

On August 18, 2023, PNM, along with the intervening parties in the pending appeal of the matter addressing customer bill credits and resolution of the remaining steps involved in the SJGS retirement under the ETA, filed an Unopposed Joint Motion for Abeyance and Remand to Implement Settlement and Request for Expedited Order at the NM Supreme Court. In the motion, the parties asked the NM Supreme Court to hold the appeal in abeyance and remand the matter to the NMPRC to allow the NMPRC to consider and take formal action on a unanimous proposed settlement on remand. Under the terms of the unanimous settlement, PNM would provide $115.0 million in rate credits to customers over a one-year period, resolving all disputes raised in the matter addressing customer bill credits involved in the SJGS retirement before the NMPRC, including removal of SJGS ratemaking and prudence issues in the 2024 Rate Change. Regarding the 2024 Rate Change, PNM agreed to withdraw its request for regulatory assets associated with prefunding of ETA state administered funds and legal costs associated with this matter. In addition, customers will be protected from rising interest rates if the weighted-average rate on the Securitized Bonds exceeds 5.5%. On September 14, 2023, the NM Supreme Court issued an order granting the unopposed motion and remanded the matter to the NMPRC. On September 21, 2023, the NMPRC approved the unanimous settlement agreement. PNM began issuing rate credits on customer bills on October 21, 2023.

As a result of the NMPRC’s September 21, 2023 order approving the unanimous settlement, PNM recorded a $115.0 million reduction to electric operating revenues on PNMR’s and PNM’s Statement of Earnings, for amounts previously recorded under PNM’s current retail rates and a corresponding current regulatory liability on PNMR’s and PNM’s Balance Sheets at September 30, 2023. In addition, PNM recorded a regulatory disallowance of $2.3 million on PNMR’s and PNM’s Statement of Earnings and a corresponding decrease to deferred regulatory assets on PNMR’s and PNM’s Balance Sheets at September 30, 2023 to reflect PNM’s agreement to withdraw its request for regulatory assets associated with prefunding of ETA state administered funds and legal costs associated with this matter.

Additional information concerning the SJGS Abandonment Application is contained in Note 17 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

Four Corners Abandonment Application

On November 1, 2020, PNM entered into the Four Corners Purchase and Sale Agreement with NTEC, pursuant to which PNM agreed to sell its 13% ownership interest (other than certain transmission assets) in Four Corners to NTEC. The sale is contingent upon NMPRC approval. In connection with the sale, PNM would make payments of $75.0 million to NTEC for relief from its obligations under the coal supply agreement for Four Corners after December 31, 2024. Pursuant to the Four Corners Purchase and Sale Agreement, PNM would retain its current plant decommissioning and coal mine reclamation obligations. PNM made an initial payment to NTEC of $15.0 million in November 2020, subject to refund with interest upon termination of the Four Corners Purchase and Sale Agreement prior to closing. Under the terms of the Four Corners Purchase and Sale Agreement, upon receipt of the NMPRC approval, PNM is expected to make a final payment of $60.0 million.

On January 8, 2021, PNM filed the Four Corners Abandonment Application, which sought NMPRC approval to exit PNM’s share of Four Corners as of December 31, 2024, and issuance of approximately $300 million of Securitized Bonds as provided by the ETA. PNM’s request for the issuance of Securitized Bonds included approximately $272 million of forecasted undepreciated investments in Four Corners at December 31, 2024, an estimated $4.6 million for plant decommissioning costs, an estimated $7.3 million in upfront financing costs, and an estimated $16.5 million for economic development in the Four Corners area.

On March 15, 2021, PNM filed an amended application and supplemental testimony for the approval of the abandonment and transfer of Four Corners and issuance of a financing order pursuant to the ETA and a motion to withdraw the January 8, 2021 Four Corners Application. The amended application and supplemental testimony provided additional information to support PNM’s request to abandon its interest in Four Corners and transfer that interest to NTEC, and also provided additional detail explaining how the proposed sale and abandonment provides a net public benefit.

On November 12, 2021, the hearing examiner issued a recommended decision recommending approval of the Four Corners Abandonment Application and the corresponding request for issuance of securitized financing. On December 15,

2021, the NMPRC issued a final order rejecting the hearing examiner’s recommended decision and denying approval of the Four Corners Abandonment Application and the corresponding request for issuance of securitized financing. In its order, the NMPRC concluded that PNM needed to conduct a review of the actual replacement resource portfolio and determined that the record was insufficient to determine the prudence of PNM’s investments in Four Corners. On December 22, 2021, PNM filed a Notice of Appeal with the NM Supreme Court of the NMPRC decision to deny the application. On January 21, 2022, PNM filed its Statement of Issues outlining the arguments for appeal asserting, among other things, that the NMPRC misinterpreted and improperly applied the ETA in concluding that the NMPRC needed to review the actual replacement resource portfolio before authorizing abandonment and that the NMPRC improperly deferred the issue of prudence with respect to certain of PNM’s investments in Four Corners, where other parties were given the opportunity to present evidence and failed to demonstrate PNM was imprudent in its decisions. On March 28, 2023, the NM Supreme Court heard oral arguments on the appeal. On July 6, 2023, the NM Supreme Court issued a decision concluding that the NMPRC reasonably and lawfully denied PNM’s application for abandonment, determining that PNM did not meet its burden in challenging the NMPRC’s final order. The Company is evaluating the facts and circumstances surrounding the potential early exit of Four Corners and will determine next steps.

GAAP requires a loss be recognized when it is probable that a loss has been incurred and the amount of loss can be reasonably estimated. As of September 30, 2023, PNM evaluated the NMPRC order in the Four Corners Abandonment Application and the NM Supreme Court’s decision and determined it was reasonably possible that PNM would be successful in recovery of its undepreciated investment in future rate proceedings. In the nine months ended September 30, 2023, PNM recorded a regulatory disallowance of $3.7 million for costs associated with obtaining an abandonment order, which are no longer expected to be recovered as a result of the NM Supreme Court’s decision to uphold the NMPRC’s decision to deny PNM’s Four Corners Abandonment Application.

The financial impact of an early exit of Four Corners and the NMPRC approval process is influenced by many factors outside of PNM’s control, including the overall political and economic conditions of New Mexico. See additional discussion of the ETA in Note 11. PNM cannot predict the outcome of these matters.

PVNGS Leased Interest Abandonment Application

On April 2, 2021, PNM filed the PVNGS Leased Interest Abandonment Application, an application for the sale and transfer of related assets, and approval to procure new resources. As discussed in Note 13, PNM had Leased Interest under five separate leases that were approved and certificated by the predecessor agency to the NMPRC in the 1980s. Four of the five leases for 104 MW of Leased Interest terminated in January 2023, while the remaining lease for 10 MW of Leased Interest terminates in January 2024. Associated with the Leased Interest are certain PNM-owned assets and nuclear fuel that are necessary for the ongoing operation and maintenance of the Leased Interest and integration of the Leased Interest generation to the transmission network. PNM determined that there will be net benefits to its customers to return the Leased Interest to the lessors in conformity with the leases, sell and transfer the related PNM-owned assets, and to replace the Leased Interest with new resources. In the application, PNM requested NMPRC authorization to decertify and abandon its Leased Interest and to create regulatory assets for the associated remaining undepreciated investments with consideration of cost recovery of the undepreciated investments in a future rate case. PNM also sought NMPRC approval to sell and transfer the PNM-owned assets and nuclear fuel supply associated with the Leased Interest to SRP, which has and will acquire the Leased Interest from the lessors upon termination of the existing leases.

On April 21, 2021, the NMPRC issued an order assigning a hearing examiner and stated that issues reserved to a separate proceeding in the NM 2015 Rate Case regarding the decision to permanently disallow recovery of certain future decommissioning costs related to PVNGS Units 1 and 2 shall be addressed in this case and PNM shall file testimony addressing the issue. On June 28, 2021, NEE and CCAE jointly filed a motion to dismiss a portion of the application claiming that since PNM’s request to abandon the Leased Interest was filed after PNM had already provided irrevocable notice it would not acquire the Leased Interest, abandonment is no longer required. On July 28, 2021, the hearing examiner issued a recommended decision on NEE’s and CCAE’s joint motion to dismiss, recommending dismissal of PNM’s requests for approval to abandon and decertify the Leased Interest; dismissal of PNM’s request for approval to sell and transfer the related assets; and dismissal of PNM’s request to create regulatory assets for the associated remaining undepreciated investments, but did not preclude PNM seeking recovery of the costs in a general rate case in which the test year period includes the time period in which PNM incurs such costs. The hearing examiner’s recommended decision further provided that PNM’s request for replacement resources and the decision to permanently disallow recovery of certain future decommissioning costs related to PVNGS Units 1 and 2 should remain within the scope of this case.

On August 25, 2021, the NMPRC issued an order granting portions of the July 28, 2021 recommended decision that were not contested related to dismissal of PNM’s request for approval to abandon and decertify the Leased Interest and dismissal of PNM’s request for approval to sell and transfer the related assets. In addition, the order bifurcated the issue of approval for replacement resources into a separate docket.

The hearing on replacement resources was held on November 12 and 15, 2021 and December 3, 2021. On February 16, 2022, the NMPRC adopted an order approving the replacement resources. In the second quarter of 2022, PNM made compliance filings notifying the NMPRC that none of the developers had moved forward under the terms of the agreements approved by the NMPRC on February 16, 2022, and none of the replacement resource projects would be operational in 2023. PNM ultimately entered into amendments with one developer for 300 MW solar PPA combined with a 300 MW battery storage agreement, which no party opposed and was deemed approved in September 2022. PNM anticipates these facilities will be in service in 2024.

On November 1, 2022, ABCWUA, Bernalillo County, CCAE, NEE, NM AREA, the NMAG, WRA, and NMPRC Staff filed a joint motion for an accounting order to require PNM to track in a regulatory liability, all costs associated with the PVNGS Leased Interests that will be abandoned in January 2023 and January 2024 that are still being collected in rates, which PNM opposed. On November 18, 2022, the NMPRC issued its order on joint motion for an accounting order requiring PNM to establish a regulatory liability to track and account for, upon termination of the PVNGS leases, all costs currently borne by ratepayers associated with those leases during pendency of the 2024 Rate Change, subject to a determination of ratemaking treatment. In addition, PNM may establish a regulatory asset account to record undepreciated investment for improvements to the Unit 1 and Unit 2 Leased Interests upon termination of the leases, and to record cost differences in the proceeds from SRP for the sale of the PVNGS Leased Assets and the actual book value. Recovery of these items will be determined in the 2024 Rate Change. In the 2024 Rate Change, PNM must also address unresolved issues including whether PNM’s decision to renew the five leases and repurchase 64.1 MW of PVNGS Unit 2 capacity exposed ratepayers to additional financial liability beyond that to which they would otherwise have been exposed, and whether PNM should be denied recovery of future decommissioning expenses as a remedy for imprudence. See 2024 Rate Change discussion above.

PNM evaluated the consequences of the NMPRC’s November 18, 2022 accounting order, as required under GAAP, and whether it should establish a regulatory liability in 2023 to account for revenue collected from ratepayers during the pendency of the 2024 Rate Change. In addition, PNM evaluated whether it should establish a regulatory asset account to record undepreciated investment for improvements to the Unit 1 and Unit 2 Leased Interests upon termination of the leases in January 2023 and 2024. Based on these evaluations PNM concluded that the accounting order was not tied to a specific rate order and does not change PNM’s resources or obligations and those decisions will be determined in the 2024 Rate Change. Therefore, no loss or regulatory liability has been recorded as of September 30, 2023. The amount of any such loss to be recorded would depend on the ultimate outcome of the 2024 Rate Change, however based on amounts currently included in base rates, PNM estimates the potential loss as of September 30, 2023 to be $28.8 million. PNM does not consider a disallowance of all or part of the cost of the undepreciated leasehold improvements to be probable and reasonably estimatable at this time, and in 2023 reclassified $88.2 million of undepreciated leasehold improvements, previously reflected in Net utility plant, to a deferred regulatory asset on PNMR’s and PNM’s Condensed Consolidated Balance Sheet at September 30, 2023.

In addition to approval by the NMPRC, PNM and SRP received NRC approval for the transfer of the associated possessory licenses at the end of the term of each of the respective leases.

Summer Peak Resource Adequacy

Throughout 2021, 2022 and continuing into 2023, PNM provided notices of delays and status updates to the NMPRC for the approved SJGS replacement resource projects as well as delays in replacement resources for the PVNGS leased capacity that expired in January 2023. On January 30, 2023, PNM informed the NMPRC that it had provided written notice to one of the SJGS replacement resource developers for 100 MW solar PPA and a 30 MW battery storage agreement of an event of seller default and of early termination and as a result the project would not proceed. In the second half of 2022 and the first quarter of 2023, PNM entered into agreements totaling 420 MW of firm power purchases for the summer peak in 2023 and the purchase of 40 MW of firm capacity at PVNGS for all twelve months of 2023, providing PNM with a projected system reserve margin necessary to meet customer demand. While PNM experienced a new system peak retail load of 2,139 MW on July 19, 2022, and in 2023 experienced a new system peak retail load of 2,162 MW on July 18, 2023, PNM’s generation resources performed sufficiently with no challenges to resource adequacy during the 2022 and 2023 summer peak seasons. PNM anticipates that a majority of the SJGS and PVNGS leased capacity replacement resources will be available prior to the 2024 summer peak

season and may also secure additional firm energy market purchases necessary to meet customer load during the 2024 summer season. PNM is unable to predict the outcome of this matter.

2026 Resource Application

On October 25, 2023, PNM filed an application with the NMPRC seeking approval of resources to be available for the 2026 summer peak. The application includes approval of a 100 MW solar PPA and three battery storage agreements of 100 MW, 100 MW, and 50 MW. In addition, PNM is seeking approval of a CCN for a 60 MW battery storage system to be owned by PNM. The resources are necessary for PNM to safely and reliably meet its projected system load.

Grid Modernization Application

On October 3, 2022, in compliance with New Mexico Grid Modernization Statute, PNM filed its Grid Modernization Application with the NMPRC. The projects included in the Grid Modernization Application improve customers’ ability to customize their use of energy and ensure that customers, including low-income customers, are a top priority and will benefit consistent with the Grid Modernization Statute. PNM’s proposal to modernize its electricity grid through infrastructure and technology improvements also increases the efficiency, reliability, resilience, and security of PNM’s electric system. PNM’s application seeks approval of grid modernization investments of approximately $344 million for the first six years of a broader 11-year strategy. PNM’s application requested NMPRC approval by July 1, 2023 for PNM’s grid modernization plan in addition to approval of PNM’s proposed Grid Modernization Rider by September 1, 2023. The proposed Grid Modernization Rider would recover capital costs, operating expenses, and taxes associated with the investments included in the Grid Modernization Application. PNM also requested authorization to create related regulatory assets and liabilities, permitting PNM to record costs incurred for the development and implementation of PNM’s plan between the requested approval of the application on July 1, 2023, and the implementation of the Grid Modernization Rider by September 1, 2023; undepreciated investments associated with legacy meters being replaced with AMI meters; and over- or under-collection of costs through the Grid Modernization Rider. In addition, PNM requested approval of the proposed format of an Opt-Out Consent Form and methodology to determine PNM’s proposed cost-based opt-out fees, which includes a one-time fee and a monthly fee. A hearing was held on March 20, 2023 through March 24, 2023. Post-hearing briefs were filed April 20, 2023, and response briefs were filed May 10, 2023. On May 31, 2023, the NMPRC issued an order requiring the hearing examiner to direct PNM to file a cost benefit analysis as a supplement to the application. On June 23, 2023, PNM filed its response to the order from the NMPRC, stating it could file the required cost benefit analysis by November 3, 2023. PNM is unable to predict the outcome of this matter.

COVID-19 Regulatory Matters

In 2020, the NMPRC issued an order authorizing all public utilities regulated by the NMPRC to create a regulatory asset to defer incremental costs related to COVID-19, including increases to bad debt expense incurred during the period beginning March 11, 2020 through the termination of the Governor of New Mexico’s emergency executive order. The NMPRC order requires public utilities creating regulatory assets to pursue all federal, state, or other subsidies available, to record a regulatory liability for all offsetting cost savings resulting from the COVID-19 pandemic, and allows PNM to request recovery in future ratemaking proceedings. As a result, PNM has deferred costs related to COVID-19 of $5.7 million in regulatory assets on the Condensed Consolidated Balance Sheet at both September 30, 2023 and December 31, 2022. Although PNM is seeking recovery for the increase in bad debt expense resulting from COVID-19 through a regulatory asset in the 2024 Rate Change, it no longer intends to seek recovery of other incremental costs related to the pandemic. In addition, PNM has cost savings related to COVID-19 of $0.9 million in regulatory liabilities on the Condensed Consolidated Balance Sheets at both September 30, 2023 and December 31, 2022.

The Community Solar Act

In June 2021, the Community Solar Act established a program that allows for the development of community solar facilities and provides customers of a qualifying utility with the option of accessing solar energy produced by a community solar facility in accordance with the Community Solar Act. The NMPRC is charged with administering the Community Solar Act program, establishing a total maximum capacity of 200 MW community solar (applicable until November 2024) facilities and allocating proportionally to the New Mexico electric investor-owned utilities and participating cooperatives. As required under the Community Solar Act, the NMPRC opened a docket on May 12, 2021 to adopt rules to establish a community solar program no later than April 1, 2022. On June 15, 2021, the NMPRC issued an order which required utilities provide a notice to all future applicants and to any likely applicants that, until the effective date of the NMPRC’s rules in this area the NMPRC’s existing interconnection rules and manual remain in place until amended or replaced by the NMPRC, and further, that a place in

a utility’s applicant queue for interconnection does not and will not provide any advantage for selection as a community solar project. PNM provided the required notices. On October 27, 2021, the NMPRC adopted an order issuing a Notice of Proposed Rulemaking (“NOPR”) starting the formal process for adoption of rules pursuant to the Community Solar Act. On March 30, 2022, the NMPRC issued an order that adopted a rule on the administration of the Community Solar Act program. The rule required utilities to file proposed community solar tariffs with the NMPRC within 60 days from the publication of the rule. A number of motions for rehearing and requests for clarification were filed between April 7 and May 2, 2022. On May 18, 2022, the NMPRC issued an order partially granting motions for rehearing, reconsideration and clarification and staying implementation pending further rulemaking. On June 16, 2022, PNM requested clarification related to the existing interconnection queue, which would not delay implementation of the Community Solar Act program. On July 12, 2022, the NMPRC provided notice of publication of its final rule in the New Mexico Register, starting the 60-day clock for utilities to file their proposed community solar tariffs, forms, and other relevant agreements. On September 14, 2022, PNM filed Community Solar tariffs. On October 12, 2022, the NMPRC issued an order to suspend PNM’s and two other investor-owned utilities tariffs and required the utilities to file information NMPRC Staff has identified as necessary for a complete evaluation of the tariffs but did not appoint a hearing examiner or schedule a public hearing. Another investor-owned utility has filed an appeal with the NM Supreme Court seeking review of the NMPRC’s decisions, to which PNM has intervened.

On November 16, 2022, PNM filed its Community Solar tariff which establishes the Community Solar bill credit to be applied to an eligible retail customer of PNM who is a subscriber to a community solar facility. On December 23, 2022, PNM filed an updated Community Solar tariff under protest and filed a motion for clarification, suspension, and timely hearing on PNM’s Community Solar tariff. On January 18, 2023, the NMPRC suspended PNM’s Community Solar tariff. On March 1, 2023, the NMPRC issued an Order Opening a New Docket for Two-Phase Proceedings. The first phase addressed issues concerning the proposed subscriber organization agreements and the proposed customer data forms. The second phase will address all issues concerning proposed tariffs, agreements and forms that are not addressed in the first phase. On May 31, 2023, the utilities filed a Consolidated Reply Brief to the NMPRC and the Joint Intervenors-Appellee filed Answer Briefs in the NM Supreme Court proceeding. On September 21, 2023, the NMPRC issued an order approving an uncontested stipulation on the first phase. The order directs PNM to file an advice notice conforming to the stipulation with an effective date of October 30, 2023. If NMPRC Staff recommends that the advice notice be allowed to go into effect, then no further order of the NMPRC will be needed and the first phase shall be complete at such time as the advice notice becomes effective. A hearing is scheduled for the second phase to begin on January 17, 2024. PNM cannot predict the outcome of the pending matters.

Battery Energy Storage System Certificate of Public Convenience and Necessity (“CCN”)

On May 3, 2023, PNM filed a CCN application with the NMPRC for two battery energy storage systems, 6 MW each, located on PNM’s distribution system in Valencia and Bernalillo counties. PNM intends to construct, own, and operate these systems that will be interconnected to the distribution system on feeders that currently exceed their existing hosting capacity limits due to the high amount of solar production connected to them. The deployment of battery energy storage systems on these feeders at capacity will bring the power flow on the feeders back within design limits, potentially allowing a number of solar interconnection applications currently on hold to interconnect, which will in turn reduce carbon emissions and the need to curtail solar production in times of oversupply. PNM is requesting approval of the CCN application, with an estimated total cost of $25.8 million, by December 31, 2023 to support the proposed construction schedule and have the battery energy storage systems begin serving customers in June 2024. On May 30, 2023, the hearing examiner issued an order setting out a procedural schedule with a hearing held on October 12, 2023. PNM is unable to predict the outcome of this matter.

Meta Platforms Inc. Data Center

PNM has a special service contract to provide service to Meta, Inc. for a data center in PNM’s service area. Meta’s service requirements include the acquisition by PNM of a sufficient amount of new renewable energy resources and RECs to match the energy and capacity requirements of the data center. The cost of renewable energy procured is passed through to Meta under a rate rider. A special service rate is applied to Meta’s energy consumption in those hours of the month when their consumption exceeds the energy production from the renewable resources. As of September 30, 2023, PNM is procuring energy from 180 MW of solar-PV capacity from NMRD, a 50% equity method investee of PNMR Development. See additional discussion of NMRD in Note 16.

On July 24, 2023, PNM filed an application with the NMPRC for approval to service the data center for an additional 140 MW of solar PPA combined with 50 MW of battery storage expected to be operational in 2025. On August 4, 2023, the hearing examiner issued an order setting out a procedural schedule with a hearing to begin November 7, 2023. PNM is unable to predict the outcome of this matter.

Transportation and Electrification Program (TEP)

On June 1, 2023, PNM filed its 2024-2026 TEP with the NMPRC, requesting approval of a $37.1 million total three-year budget and continuation of the current TEP Rider. Approximately 22% of the budget, $8.0 million, will be dedicated to low-income customers. On July 21, 2023, the hearing examiner issued an order setting out a procedural schedule with a hearing to begin December 13, 2023. PNM is unable to predict the outcome of this matter.

FERC Order 864

In November 2019, FERC issued Order No. 864, which required public utility transmission providers with transmission formula rates to revise those rates to account for changes resulting from the Tax Cuts and Jobs Act of 2017 (the “Tax Act”). PNM had already made revisions to its formula rate to account for Tax Act changes, and, as a result of the Order, PNM proposed additional changes to its formula rate to implement the remaining requirements of the Order. In July 2022, FERC issued an order finding that PNM had predominantly complied with the requirements but set aside certain matters for settlement and hearing procedures. The parties have a settlement agreement in principle and expect to file a settlement letter for the Settlement Judge’s review by November 3, 2023. As a result of adjustments agreed to in settlement discussions, PNM recorded a decrease of $3.1 million to electric operating revenues on PNMR’s and PNM’s Statement of Earnings and a corresponding increase to other current liabilities on PNMR’s and PNM’s Balance Sheets at September 30, 2023. PNM is unable to determine the outcome of this matter.

TNMP

Transmission Cost of Service Rates

TNMP can update its transmission cost of service (“TCOS”) rates twice per year to reflect changes in its invested capital although updates are not allowed while a general rate case is in process. Updated rates reflect the addition and retirement of transmission facilities, including appropriate depreciation, federal income tax and other associated taxes, and the approved rate of return on such facilities. The following sets forth TNMP’s recent interim transmission cost rate increases:

Effective Date	Approved Increase in Rate Base		Annual Increase in Revenue
	(In millions)
September 20, 2021	$	41.2	$	6.3
March 25, 2022	95.6		14.2
September 22, 2022	36.0		5.3
May 12, 2023	150.5		19.4
September 6, 2023	21.4		4.2

Periodic Distribution Rate Adjustment

PUCT rules permit interim rate adjustments to reflect changes in investments in distribution assets. Historically, distribution utilities have been restricted to a single, annual periodic rate adjustment through a distribution cost recovery filing (“DCRF”) submitted between April 1 and April 8 of each year as long as the electric utility was not earning more than its authorized rate of return using weather-normalized data. However, the recent passage of Senate Bill 1015 now permits DCRF proceedings to be filed twice per year with a 60-day administrative deadline that can be extended for 15 days on good cause. Additionally, a DCRF may be filed during a pending rate case proceeding as long as that DCRF request is not filed until the 185th day after the rate case proceeding was initiated. The following sets forth TNMP’s recent interim distribution rate increases:

Effective Date	Approved Increase in Rate Base		Annual Increase in Revenue
	(In millions)
September 1, 2021	$	104.5	$	13.5
September 1, 2022	95.7		6.8
September 1, 2023	157.0		14.5

Energy EfficiencyTNMP recovers the costs of its energy efficiency programs through an energy efficiency cost recovery factor (“EECRF”), which includes projected program costs, under and over collected costs from prior years, rate case expenses, and performance bonuses (if programs exceed mandated savings goals). TNMP’s 2021 EECRF filing requested recovery of $7.2 million, including a performance bonus of $2.3 million, and became effective March 1, 2022. On May 27, 2022, TNMP filed its request to adjust the EECRF to reflect changes in costs for 2023. The total amount requested was $7.4 million, which includes a performance bonus of $1.9 million based on TNMP’s energy efficiency achievements in the 2021 plan year. On August 24, 2022, a unanimous stipulation and settlement was filed with the PUCT to recover $7.3 million in 2023, including the performance bonus of $1.9 million. On October 6, 2022, the PUCT approved the unanimous stipulation. On May 26, 2023, TNMP filed its request to adjust the EECRF to reflect changes in costs for 2024. On September 28, 2023, the PUCT approved a unanimous stipulation, authorizing recovery of $6.6 million, including a performance bonus of $1.2 million based on TNMP’s energy efficiency achievements in the 2022 plan year.

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Lease Commitments

9 Months Ended

Sep. 30, 2023

Leases [Abstract]

Lease Commitments

Lease Commitments

The Company leases office buildings, vehicles, battery storage facilities, and other equipment. In addition, PNM leases interests in PVNGS Unit 2 and certain rights-of-way agreements are classified as leases. All of the Company’s leases with terms in excess of one year are recorded on the balance sheet by recording a present value lease liability and a corresponding right-of-use asset. Operating lease expense is recognized within operating expenses according to the use of the asset on a straight-line basis. Financing lease costs, which are comprised primarily of fleet and office equipment leases commencing after January 1, 2019, are recognized by amortizing the right-of-use asset on a straight-line basis and by recording interest expense on the lease liability. Financing lease right-of-use assets amortization is reflected in depreciation and amortization and interest on financing lease liabilities is reflected as interest charges on the Company’s Condensed Consolidated Statements of Earnings. See additional discussion of the Company’s leasing activities in Note 8 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

PVNGS

In 1985 and 1986, PNM entered into leases for its interest in PVNGS Unit 1 and 2. The leases initially were scheduled to expire in January 2015 for four Unit 1 leases and January 2016 for four Unit 2 leases. Following procedures set forth in the PVNGS leases, PNM notified four of the lessors under the Unit 1 leases and one lessor under the Unit 2 lease that it would elect to renew those leases on the expiration date of the original leases. The four Unit 1 leases expired in January 2023 and the one Unit 2 lease expires in January 2024. The annual lease payments during the renewal periods aggregate $1.6 million on the remaining PVNGS Unit 2 lease.

The terms of each of the extended leases did not provide for additional renewal options beyond their scheduled expiration dates. PNM had the option to purchase the assets underlying each of the extended leases at their fair market value or to return the lease interests to the lessors on the expiration dates. On June 11, 2020, PNM provided notice to the lessors and the NMPRC of its intent to return the assets underlying both the PVNGS Unit 1 and Unit 2 leases upon their expiration in January 2023 and 2024. Although PNM elected to return the assets underlying the extended leases, PNM retains certain obligations related to PVNGS, including costs to decommission the facility. PNM depreciates its capital improvements related to the extended leases using NMPRC approved rates through the end of the NRC license period for each unit, which expire in June 2045 for Unit 1 and in June 2046 for Unit 2. Upon expiration of the leases PNM will cease depreciation and, as authorized by the NMPRC, create a regulatory asset for the associated remaining undepreciated investments.

On April 5, 2021, PNM and SRP entered into an Asset Purchase and Sale Agreement, pursuant to which PNM agreed to sell to SRP certain PNM-owned assets and nuclear fuel necessary to the ongoing operation and maintenance of leased capacity in PVNGS Unit 1 and Unit 2, which SRP has agreed to acquire from the lessors upon termination of the existing leases. The proposed transaction between PNM and SRP received all necessary approvals, including NRC approval for the transfer of the associated possessory licenses to SRP at the end of the term of each of the respective leases. In January 2023, the Unit 1 leases expired, and PNM closed on the associated sale to SRP, receiving payments of $33.7 million, of which $28.4 million was recorded as a reduction to Net utility plant on the Condensed Consolidated Balance Sheets and is presented as cash flows from investing activities on the Condensed Consolidated Statement of Cash Flows. In addition, $5.3 million was recorded as a reduction to Materials, supplies, and fuel stock on the Condensed Consolidated Balance Sheets and is presented as cash flows from operating activities on the Condensed Consolidated Statement of Cash Flows. See Note 12 for information on other PVNGS matters including the PVNGS Leased Interest Abandonment Application which included PNM’s request to create regulatory assets for the associated remaining undepreciated investments.

PNM is exposed to loss under the PVNGS lease arrangements upon the occurrence of certain events that PNM does not consider reasonably likely to occur. Under certain circumstances (for example, the NRC issuing specified violation orders with respect to PVNGS or the occurrence of specified nuclear events), PNM would be required to make specified payments to the lessors and take title to the leased interests. If such an event had occurred as of September 30, 2023, amounts due to the lessors under the circumstances described above would have been up to $13.5 million, payable on January 15, 2024 in addition to the scheduled lease payments due on that date.

Land Easements and Rights-of-Ways

Many of PNM’s electric transmission and distribution facilities are located on lands that require the grant of rights-of-way from governmental entities, Native American tribes, or private parties. PNM has completed several renewals of rights-of-way, the largest of which is a renewal with the Navajo Nation. PNM is obligated to pay the Navajo Nation annual payments of $6.0 million, subject to adjustment each year based on the Consumer Price Index, through 2029. PNM’s April 2023 payment for the amount due under the Navajo Nation right-of-way lease was $8.3 million, which included amounts due under the Consumer Price Index adjustment. Changes in the Consumer Price Index subsequent to January 1, 2019 are considered variable lease payments.

PNM has other prepaid rights-of-way agreements that are not accounted for as leases or recognized as a component of plant in service. PNM reflects the unamortized balance of these prepayments in other deferred charges on the Condensed Consolidated Balance Sheets and recognizes amortization expense associated with these agreements in the Condensed Consolidated Statement of Earnings over their term. As of September 30, 2023 and December 31, 2022, the unamortized balance of these rights-of-ways was $56.7 million and $54.6 million. PNM recognized amortization expense associated with these agreements of $0.8 million and $2.6 million in the three and nine months ended September 30, 2023 and $0.9 million and $2.9 million in the three and nine months ended September 30, 2022.

Fleet Vehicles and Equipment

Fleet vehicle and equipment leases commencing on or after January 1, 2019 are classified as financing leases. Fleet vehicle and equipment leases existing as of December 31, 2018 are classified as operating leases. The Company’s fleet vehicle and equipment lease agreements include non-lease components for insignificant administrative and other costs that are billed over the life of the agreement. At September 30, 2023, residual value guarantees on fleet vehicle and equipment leases are $0.9 million, $1.0 million, and $1.9 million for PNM, TNMP, and PNMR Consolidated.

Battery Storage Agreements

The Company has entered into various battery storage agreements and, in the third quarter of 2023, two battery storage facilities with an aggregate capacity of 170 MW began commercial operation. The agreements are for 20-year terms and have fixed payments over the life of the agreements. The Company has accounted for the agreements as operating leases and has recorded lease liabilities with corresponding right-of-use assets of $138.7 million. In addition, the Company has elected to separate lease components from non-lease components for battery storage agreements and accordingly, does not include non-lease components in the measurement of the lease liability or right-of-use asset.

Information related to the Company’s operating leases recorded on the Condensed Consolidated Balance Sheets is presented below:

	September 30, 2023						December 31, 2022
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Operating leases:
Operating lease assets, net of amortization	$	183,889	$	2,099	$	185,989	$	52,556	$	3,426	$	55,982
Current portion of operating lease liabilities	10,992		991		11,983		17,239		1,543		18,781
Long-term portion of operating lease liabilities	167,891		959		168,849		39,633		1,703		41,336

As discussed above, the Company classifies its fleet vehicle and equipment leases and its office equipment leases commencing on or after January 1, 2019 as financing leases. Information related to the Company’s financing leases recorded on the Condensed Consolidated Balance Sheets is presented below:

	September 30, 2023						December 31, 2022
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Financing leases:
Non-utility property	$	25,144	$	22,931	$	48,143	$	19,324	$	20,084	$	39,738
Accumulated depreciation	(10,905)		(10,898)		(21,851)		(7,726)		(8,202)		(16,189)
Non-utility property, net	14,239		12,033		26,292		11,598		11,882		23,549
Other current liabilities	$	4,339	$	4,459	$	8,813	$	3,441	$	3,867	$	7,363
Other deferred credits	9,888		7,593		17,486		8,079		8,028		16,123

Information concerning the weighted average remaining lease terms and the weighted average discount rates used to determine the Company’s lease liabilities as of September 30, 2023 is presented below:

	PNM		TNMP		PNMR Consolidated
Weighted average remaining lease term (years):
Operating leases	17.08		1.84		16.92
Financing leases	3.91		3.08		3.53
Weighted average discount rate:
Operating leases	5.61	%	4.15	%	5.60	%
Financing leases	4.43	%	4.24	%	4.34	%

Information for the components of lease expense is as follows:

	Three Months Ended September 30, 2023						Nine Months Ended September 30, 2023
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Operating lease cost:	$	4,001	$	345	$	4,346	$	10,377	$	1,175	$	11,552
Amounts capitalized	(71)		(302)		(373)		(334)		(1,031)		(1,365)
Total operating lease expense	3,930		43		3,973		10,043		144		10,187
Financing lease cost:
Amortization of right-of-use assets	1,193		1,183		2,389		3,325		3,345		6,718
Interest on lease liabilities	148		126		274		411		349		760
Amounts capitalized	(844)		(1,071)		(1,915)		(2,313)		(3,076)		(5,389)
Total financing lease expense	497		238		748		1,423		618		2,089
Variable lease expense	360		—		360		982		—		982
Short-term lease expense	174		7		190		438		22		490
Total lease expense for the period	$	4,961	$	288	$	5,271	$	12,886	$	784	$	13,748

	Three Months Ended September 30, 2022						Nine Months Ended September 30, 2022
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Operating lease cost:	$	6,736	$	466	$	7,205	$	20,085	$	1,489	$	21,623
Amounts capitalized	(166)		(410)		(577)		(524)		(1,336)		(1,860)
Total operating lease expense	6,570		56		6,628		19,561		153		19,763
Financing lease cost:
Amortization of right-of-use assets	792		779		1,585		2,293		2,334		4,680
Interest on lease liabilities	84		85		170		231		238		471
Amounts capitalized	(588)		(829)		(1,417)		(1,648)		(2,309)		(3,957)
Total financing lease expense	288		35		338		876		263		1,194
Variable lease expense	262		—		262		629		—		629
Short-term lease expense (1)	568		1		567		2,837		4		2,884
Total lease expense for the period	$	7,688	$	92	$	7,795	$	23,903	$	420	$	24,470

(1) Includes expense of $0.4 million and $2.7 million for the three and nine months ended September 30, 2022 for rental of temporary cooling towers associated with the SJGS Unit 1 outage. These amounts are offset with insurance reimbursements of $0.4 million and $2.7 million for the three and nine months ended September 30, 2022.

Supplemental cash flow information related to the Company’s leases is as follows:

	Nine Months Ended						Nine Months Ended
	September 30, 2023						September 30, 2022
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	18,714	$	113	$	18,827	$	25,503	$	118	$	25,670
Operating cash flows from financing leases	135		47		183		67		32		101
Finance cash flows from financing leases	1,221		565		1,836		810		371		1,249
Non-cash information related to right-of-use assets obtained in exchange for lease obligations:
Operating leases	$	138,878	$	6	$	138,884	$	2,924	$	—	$	2,924
Financing leases	5,977		3,508		9,485		3,032		2,349		5,381

Capitalized lease costs are reflected as investing activities on the Company’s Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2023 and 2022.

Future expected lease payments are shown below:

	As of September 30, 2023
	PNM						TNMP				PNMR Consolidated
			Operating										Operating
	Financing		Battery Storage		Other		Financing		Operating		Financing		Battery Storage		Other
	(In thousands)
Remainder of 2023	$	1,344	$	2,947	$	145	$	1,298	$	264	$	2,646	$	2,947	$	409
2024	4,510		11,786		8,154		4,564		945		9,088		11,786		9,099
2025	3,522		11,786		7,433		3,480		770		7,004		11,786		8,203
2026	3,010		11,786		7,024		2,299		76		5,309		11,786		7,100
2027	1,788		11,786		7,028		1,010		—		2,798		11,786		7,028
Later years	1,386		184,041		17,619		219		—		1,605		184,041		17,619
Total minimum lease payments	15,560		234,132		47,403		12,870		2,055		28,450		234,132		49,458
Less: Imputed interest	1,333		95,916		6,736		818		105		2,151		95,916		6,842
Lease liabilities	$	14,227	$	138,216	$	40,667	$	12,052	$	1,950	$	26,299	$	138,216	$	42,616

The above table includes $13.2 million, $12.7 million, and $25.9 million for PNM, TNMP, and PNMR at September 30, 2023 for expected future payments on fleet vehicle and equipment leases that could be avoided if the leased assets were returned and the lessor is able to recover estimated market value for the equipment from third parties.

At September 30, 2023, the Company has various lease arrangements that have been executed but have not yet commenced, which are primarily related to battery storage agreements. The Company currently expects lease commencement dates in 2024, with lease terms expiring in 2044, and will recognize lease assets and liabilities upon lease commencement. The expected total fixed consideration to be paid for these arrangements, which includes non-lease payments, is approximately $961.0 million over the 20-year terms of the agreements.

Lease Commitments

Lease Commitments

The Company leases office buildings, vehicles, battery storage facilities, and other equipment. In addition, PNM leases interests in PVNGS Unit 2 and certain rights-of-way agreements are classified as leases. All of the Company’s leases with terms in excess of one year are recorded on the balance sheet by recording a present value lease liability and a corresponding right-of-use asset. Operating lease expense is recognized within operating expenses according to the use of the asset on a straight-line basis. Financing lease costs, which are comprised primarily of fleet and office equipment leases commencing after January 1, 2019, are recognized by amortizing the right-of-use asset on a straight-line basis and by recording interest expense on the lease liability. Financing lease right-of-use assets amortization is reflected in depreciation and amortization and interest on financing lease liabilities is reflected as interest charges on the Company’s Condensed Consolidated Statements of Earnings. See additional discussion of the Company’s leasing activities in Note 8 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

PVNGS

In 1985 and 1986, PNM entered into leases for its interest in PVNGS Unit 1 and 2. The leases initially were scheduled to expire in January 2015 for four Unit 1 leases and January 2016 for four Unit 2 leases. Following procedures set forth in the PVNGS leases, PNM notified four of the lessors under the Unit 1 leases and one lessor under the Unit 2 lease that it would elect to renew those leases on the expiration date of the original leases. The four Unit 1 leases expired in January 2023 and the one Unit 2 lease expires in January 2024. The annual lease payments during the renewal periods aggregate $1.6 million on the remaining PVNGS Unit 2 lease.

The terms of each of the extended leases did not provide for additional renewal options beyond their scheduled expiration dates. PNM had the option to purchase the assets underlying each of the extended leases at their fair market value or to return the lease interests to the lessors on the expiration dates. On June 11, 2020, PNM provided notice to the lessors and the NMPRC of its intent to return the assets underlying both the PVNGS Unit 1 and Unit 2 leases upon their expiration in January 2023 and 2024. Although PNM elected to return the assets underlying the extended leases, PNM retains certain obligations related to PVNGS, including costs to decommission the facility. PNM depreciates its capital improvements related to the extended leases using NMPRC approved rates through the end of the NRC license period for each unit, which expire in June 2045 for Unit 1 and in June 2046 for Unit 2. Upon expiration of the leases PNM will cease depreciation and, as authorized by the NMPRC, create a regulatory asset for the associated remaining undepreciated investments.

On April 5, 2021, PNM and SRP entered into an Asset Purchase and Sale Agreement, pursuant to which PNM agreed to sell to SRP certain PNM-owned assets and nuclear fuel necessary to the ongoing operation and maintenance of leased capacity in PVNGS Unit 1 and Unit 2, which SRP has agreed to acquire from the lessors upon termination of the existing leases. The proposed transaction between PNM and SRP received all necessary approvals, including NRC approval for the transfer of the associated possessory licenses to SRP at the end of the term of each of the respective leases. In January 2023, the Unit 1 leases expired, and PNM closed on the associated sale to SRP, receiving payments of $33.7 million, of which $28.4 million was recorded as a reduction to Net utility plant on the Condensed Consolidated Balance Sheets and is presented as cash flows from investing activities on the Condensed Consolidated Statement of Cash Flows. In addition, $5.3 million was recorded as a reduction to Materials, supplies, and fuel stock on the Condensed Consolidated Balance Sheets and is presented as cash flows from operating activities on the Condensed Consolidated Statement of Cash Flows. See Note 12 for information on other PVNGS matters including the PVNGS Leased Interest Abandonment Application which included PNM’s request to create regulatory assets for the associated remaining undepreciated investments.

PNM is exposed to loss under the PVNGS lease arrangements upon the occurrence of certain events that PNM does not consider reasonably likely to occur. Under certain circumstances (for example, the NRC issuing specified violation orders with respect to PVNGS or the occurrence of specified nuclear events), PNM would be required to make specified payments to the lessors and take title to the leased interests. If such an event had occurred as of September 30, 2023, amounts due to the lessors under the circumstances described above would have been up to $13.5 million, payable on January 15, 2024 in addition to the scheduled lease payments due on that date.

Land Easements and Rights-of-Ways

Many of PNM’s electric transmission and distribution facilities are located on lands that require the grant of rights-of-way from governmental entities, Native American tribes, or private parties. PNM has completed several renewals of rights-of-way, the largest of which is a renewal with the Navajo Nation. PNM is obligated to pay the Navajo Nation annual payments of $6.0 million, subject to adjustment each year based on the Consumer Price Index, through 2029. PNM’s April 2023 payment for the amount due under the Navajo Nation right-of-way lease was $8.3 million, which included amounts due under the Consumer Price Index adjustment. Changes in the Consumer Price Index subsequent to January 1, 2019 are considered variable lease payments.

PNM has other prepaid rights-of-way agreements that are not accounted for as leases or recognized as a component of plant in service. PNM reflects the unamortized balance of these prepayments in other deferred charges on the Condensed Consolidated Balance Sheets and recognizes amortization expense associated with these agreements in the Condensed Consolidated Statement of Earnings over their term. As of September 30, 2023 and December 31, 2022, the unamortized balance of these rights-of-ways was $56.7 million and $54.6 million. PNM recognized amortization expense associated with these agreements of $0.8 million and $2.6 million in the three and nine months ended September 30, 2023 and $0.9 million and $2.9 million in the three and nine months ended September 30, 2022.

Fleet Vehicles and Equipment

Fleet vehicle and equipment leases commencing on or after January 1, 2019 are classified as financing leases. Fleet vehicle and equipment leases existing as of December 31, 2018 are classified as operating leases. The Company’s fleet vehicle and equipment lease agreements include non-lease components for insignificant administrative and other costs that are billed over the life of the agreement. At September 30, 2023, residual value guarantees on fleet vehicle and equipment leases are $0.9 million, $1.0 million, and $1.9 million for PNM, TNMP, and PNMR Consolidated.

Battery Storage Agreements

The Company has entered into various battery storage agreements and, in the third quarter of 2023, two battery storage facilities with an aggregate capacity of 170 MW began commercial operation. The agreements are for 20-year terms and have fixed payments over the life of the agreements. The Company has accounted for the agreements as operating leases and has recorded lease liabilities with corresponding right-of-use assets of $138.7 million. In addition, the Company has elected to separate lease components from non-lease components for battery storage agreements and accordingly, does not include non-lease components in the measurement of the lease liability or right-of-use asset.

Information related to the Company’s operating leases recorded on the Condensed Consolidated Balance Sheets is presented below:

	September 30, 2023						December 31, 2022
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Operating leases:
Operating lease assets, net of amortization	$	183,889	$	2,099	$	185,989	$	52,556	$	3,426	$	55,982
Current portion of operating lease liabilities	10,992		991		11,983		17,239		1,543		18,781
Long-term portion of operating lease liabilities	167,891		959		168,849		39,633		1,703		41,336

As discussed above, the Company classifies its fleet vehicle and equipment leases and its office equipment leases commencing on or after January 1, 2019 as financing leases. Information related to the Company’s financing leases recorded on the Condensed Consolidated Balance Sheets is presented below:

	September 30, 2023						December 31, 2022
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Financing leases:
Non-utility property	$	25,144	$	22,931	$	48,143	$	19,324	$	20,084	$	39,738
Accumulated depreciation	(10,905)		(10,898)		(21,851)		(7,726)		(8,202)		(16,189)
Non-utility property, net	14,239		12,033		26,292		11,598		11,882		23,549
Other current liabilities	$	4,339	$	4,459	$	8,813	$	3,441	$	3,867	$	7,363
Other deferred credits	9,888		7,593		17,486		8,079		8,028		16,123

Information concerning the weighted average remaining lease terms and the weighted average discount rates used to determine the Company’s lease liabilities as of September 30, 2023 is presented below:

	PNM		TNMP		PNMR Consolidated
Weighted average remaining lease term (years):
Operating leases	17.08		1.84		16.92
Financing leases	3.91		3.08		3.53
Weighted average discount rate:
Operating leases	5.61	%	4.15	%	5.60	%
Financing leases	4.43	%	4.24	%	4.34	%

Information for the components of lease expense is as follows:

	Three Months Ended September 30, 2023						Nine Months Ended September 30, 2023
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Operating lease cost:	$	4,001	$	345	$	4,346	$	10,377	$	1,175	$	11,552
Amounts capitalized	(71)		(302)		(373)		(334)		(1,031)		(1,365)
Total operating lease expense	3,930		43		3,973		10,043		144		10,187
Financing lease cost:
Amortization of right-of-use assets	1,193		1,183		2,389		3,325		3,345		6,718
Interest on lease liabilities	148		126		274		411		349		760
Amounts capitalized	(844)		(1,071)		(1,915)		(2,313)		(3,076)		(5,389)
Total financing lease expense	497		238		748		1,423		618		2,089
Variable lease expense	360		—		360		982		—		982
Short-term lease expense	174		7		190		438		22		490
Total lease expense for the period	$	4,961	$	288	$	5,271	$	12,886	$	784	$	13,748

	Three Months Ended September 30, 2022						Nine Months Ended September 30, 2022
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Operating lease cost:	$	6,736	$	466	$	7,205	$	20,085	$	1,489	$	21,623
Amounts capitalized	(166)		(410)		(577)		(524)		(1,336)		(1,860)
Total operating lease expense	6,570		56		6,628		19,561		153		19,763
Financing lease cost:
Amortization of right-of-use assets	792		779		1,585		2,293		2,334		4,680
Interest on lease liabilities	84		85		170		231		238		471
Amounts capitalized	(588)		(829)		(1,417)		(1,648)		(2,309)		(3,957)
Total financing lease expense	288		35		338		876		263		1,194
Variable lease expense	262		—		262		629		—		629
Short-term lease expense (1)	568		1		567		2,837		4		2,884
Total lease expense for the period	$	7,688	$	92	$	7,795	$	23,903	$	420	$	24,470

(1) Includes expense of $0.4 million and $2.7 million for the three and nine months ended September 30, 2022 for rental of temporary cooling towers associated with the SJGS Unit 1 outage. These amounts are offset with insurance reimbursements of $0.4 million and $2.7 million for the three and nine months ended September 30, 2022.

Supplemental cash flow information related to the Company’s leases is as follows:

	Nine Months Ended						Nine Months Ended
	September 30, 2023						September 30, 2022
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	18,714	$	113	$	18,827	$	25,503	$	118	$	25,670
Operating cash flows from financing leases	135		47		183		67		32		101
Finance cash flows from financing leases	1,221		565		1,836		810		371		1,249
Non-cash information related to right-of-use assets obtained in exchange for lease obligations:
Operating leases	$	138,878	$	6	$	138,884	$	2,924	$	—	$	2,924
Financing leases	5,977		3,508		9,485		3,032		2,349		5,381

Capitalized lease costs are reflected as investing activities on the Company’s Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2023 and 2022.

Future expected lease payments are shown below:

	As of September 30, 2023
	PNM						TNMP				PNMR Consolidated
			Operating										Operating
	Financing		Battery Storage		Other		Financing		Operating		Financing		Battery Storage		Other
	(In thousands)
Remainder of 2023	$	1,344	$	2,947	$	145	$	1,298	$	264	$	2,646	$	2,947	$	409
2024	4,510		11,786		8,154		4,564		945		9,088		11,786		9,099
2025	3,522		11,786		7,433		3,480		770		7,004		11,786		8,203
2026	3,010		11,786		7,024		2,299		76		5,309		11,786		7,100
2027	1,788		11,786		7,028		1,010		—		2,798		11,786		7,028
Later years	1,386		184,041		17,619		219		—		1,605		184,041		17,619
Total minimum lease payments	15,560		234,132		47,403		12,870		2,055		28,450		234,132		49,458
Less: Imputed interest	1,333		95,916		6,736		818		105		2,151		95,916		6,842
Lease liabilities	$	14,227	$	138,216	$	40,667	$	12,052	$	1,950	$	26,299	$	138,216	$	42,616

The above table includes $13.2 million, $12.7 million, and $25.9 million for PNM, TNMP, and PNMR at September 30, 2023 for expected future payments on fleet vehicle and equipment leases that could be avoided if the leased assets were returned and the lessor is able to recover estimated market value for the equipment from third parties.

At September 30, 2023, the Company has various lease arrangements that have been executed but have not yet commenced, which are primarily related to battery storage agreements. The Company currently expects lease commencement dates in 2024, with lease terms expiring in 2044, and will recognize lease assets and liabilities upon lease commencement. The expected total fixed consideration to be paid for these arrangements, which includes non-lease payments, is approximately $961.0 million over the 20-year terms of the agreements.

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Income Taxes

9 Months Ended

Sep. 30, 2023

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The Company makes an estimate of its anticipated effective tax rate for the year as of the end of each quarterly period within its fiscal year. In interim periods, income tax expense is calculated by applying the anticipated annual effective tax rate to year-to-date earnings before income taxes. Certain unusual or infrequently occurring items are excluded from the estimated annual rate calculation. Such items include the $115.0 million reduction to electric operating revenues for rate credits described in Note 12, regulatory disallowances, excess tax benefits or deficiencies related to stock awards, and Merger-related costs. At September 30, 2023, PNMR, PNM, and TNMP estimated their effective income tax rates for the year ended December 31, 2023 would be 16.05%, 18.90%, and 15.07%. The primary difference between the statutory income tax rates and the effective tax rates is the effect of the reduction in income tax expense resulting from the amortization of excess deferred federal income taxes.

During the nine months ended September 30, 2023, income tax expense calculated by applying the expected annual effective income tax rate to earnings before income taxes was further reduced by excess tax benefits related to stock awards of $0.3 million for PNMR, of which $0.2 million was allocated to PNM and $0.1 million was allocated to TNMP.

Beginning February 2018, PNM’s NM 2016 Rate Case reflects the reduction in the federal corporate income tax rate resulting from enactment of legislation commonly known as the Tax Cuts and Jobs Act (the “Tax Act”), including amortization of excess deferred federal income taxes. In accordance with the order in that case, PNM is returning the protected portion of excess deferred federal income taxes to customers over the average remaining life of plant in service as of December 31, 2017, and the unprotected portion of excess deferred federal income taxes to customers over a period of approximately twenty-three years. The approved settlement in the TNMP 2018 Rate Case includes a reduction in customer rates to reflect the impacts of the Tax Act beginning on January 1, 2019. PNMR, PNM, and TNMP will amortize federal excess deferred income taxes of $22.9 million, $14.3 million, and $8.6 million in 2023. See additional discussion of PNM’s NM 2016 Rate Case and TNMP’s 2018 Rate Case in Note 17 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K. See

additional discussion of the impacts of the Tax Act in Note 18 of the Notes to Consolidated Financial Statements in the 2022 Annual Reports on Form 10-K.

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Related Party Transactions

9 Months Ended

Sep. 30, 2023

Related Party Transactions [Abstract]

Related Party Transactions

Related Party Transactions

PNMR, PNM, TNMP, and NMRD are considered related parties, as is PNMR Services Company, a wholly-owned subsidiary of PNMR that provides corporate services to PNMR and its subsidiaries in accordance with shared services agreements. These services are billed at cost on a monthly basis to the business units. In addition, PNMR provides construction and operations and maintenance services to NMRD, a 50% owned subsidiary of PNMR Development. PNM purchases renewable energy from certain NMRD-owned facilities at a fixed price per MWh of energy produced. PNM also provides interconnection services to PNMR Development and NMRD. See Note 16 for additional discussion of NMRD. The table below summarizes the nature and amount of related party transactions of PNMR, PNM, TNMP, and NMRD:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2023		2022		2023		2022
	(In thousands)
Services billings:
PNMR to PNM	$	29,509	$	26,281	$	90,151	$	82,352
PNMR to TNMP	10,976		9,554		34,703		30,110
PNM to TNMP	100		107		269		322
TNMP to PNMR	35		35		106		106
PNMR to NMRD	71		81		235		226
Renewable energy purchases:
PNM from NMRD	3,652		3,221		9,761		9,642
Interconnection and facility study billings:
PNM to NMRD	—		—		—		—
PNM to PNMR	—		—		—		—
NMRD to PNM	—		—		—		—
Interest billings:
PNMR to PNM	8		4		18		13
PNM to PNMR	153		73		426		143
PNMR to TNMP	117		50		128		166
Income tax sharing payments:
PNMR to PNM	—		—		—		—
TNMP to PNMR	—		—		—		—

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Equity Method Investment

9 Months Ended

Sep. 30, 2023

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investment

Equity Method Investment

As discussed in Note 21 of the Company’s 2022 Annual Reports on Form 10-K, PNMR Development and AEP OnSite Partners created NMRD in September 2017 to pursue the acquisition, development, and ownership of renewable energy generation projects, primarily in the state of New Mexico. As of September 30, 2023, NMRD’s renewable energy capacity in operation was 185 MW. PNMR Development and AEP OnSite Partners each have a 50% ownership interest in NMRD. The investment in NMRD is accounted for using the equity method of accounting because PNMR’s ownership interest results in significant influence, but not control, over NMRD and its operations. PNMR Development, together with AEP OnSite Partners, has selected an adviser for the sale of NMRD.

In the nine months ended September 30, 2023, PNMR Development and AEP OnSite Partners each made cash contributions to NMRD of $25.8 million for its construction activities. In the nine months ended September 30, 2022, neither PNMR Development nor AEP OnSite Partners made any cash contributions to NMRD for its construction activities.

PNMR presents its share of net earnings from NMRD in other income on the Condensed Consolidated Statements of Earnings. Summarized financial information for NMRD is as follows:

	Results of Operations
	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(In thousands)
Operating revenues	$	4,020	$	3,407	$	10,525	$	10,224
Operating expenses	1,743		2,381		6,127		7,172
Net earnings	$	2,277	$	1,026	$	4,398	$	3,052

	Financial Position
	September 30,		December 31,
	2023		2022
	(In thousands)
Current assets	$	9,529	$	8,357
Net property, plant, and equipment	229,659		169,440
Non-current assets	2,480		9,631
Total assets	241,668		187,428
Current liabilities	4,176		5,822
Non-current liabilities	355		366
Owners’ equity	$	237,137	$	181,240

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Goodwill

9 Months Ended

Sep. 30, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

Goodwill

The excess purchase price over the fair value of the assets acquired and the liabilities assumed by PNMR for its 2005 acquisition of TNP Enterprises, Inc. and Subsidiaries (“TNP”) was recorded as goodwill and was pushed down to the businesses acquired. In 2007, the TNMP assets that were included in its New Mexico operations, including goodwill, were transferred to PNM. PNMR’s reporting units that currently have goodwill are PNM and TNMP.

The Company evaluates its goodwill for impairment annually at the reporting unit level or more frequently if circumstances indicate that the goodwill may be impaired. Application of the impairment test requires judgment, including the identification of reporting units, assignment of assets and liabilities to reporting units, and determination of the fair value of each reporting unit.

In certain circumstances an entity may perform a qualitative analysis to conclude that the goodwill of a reporting unit is not impaired. Under a qualitative assessment an entity considers macroeconomic conditions, industry and market considerations, cost factors, overall financial performance, other relevant entity-specific events affecting a reporting unit, as well as whether a sustained decrease (both absolute and relative to its peers) in share price has occurred. An entity considers the extent to which each of the adverse events and circumstances identified could affect the comparison of a reporting unit’s fair value with its carrying amount. An entity places more weight on the events and circumstances that most affect a reporting unit’s fair value or the carrying amount of its net assets. An entity also considers positive and mitigating events and circumstances that may affect its determination of whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. An entity evaluates, on the basis of the weight of evidence, the significance of all identified events and circumstances in the context of determining whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. A quantitative analysis is not required if, after assessing events and circumstances, an entity determines that it is not more likely than not that the fair value of a reporting unit is less than its carrying amount.

In other circumstances, an entity may perform a quantitative analysis to reach the conclusion regarding impairment with respect to a reporting unit. An entity may choose to perform a quantitative analysis without performing a qualitative analysis and may perform a qualitative analysis for certain reporting units, but a quantitative analysis for others. The first step of the quantitative impairment test requires an entity to compare the fair value of the reporting unit with its carrying value, including goodwill. If, as a result of this analysis, the entity concludes there is an indication of impairment in a reporting unit having goodwill, the entity is required to perform the second step of the impairment analysis, determining the amount of goodwill impairment to be recorded. The amount is calculated by comparing the implied fair value of the goodwill to its carrying amount. This exercise would require the entity to allocate the fair value determined in step one to the individual assets and

liabilities of the reporting unit. Any remaining fair value would be the implied fair value of goodwill on the testing date. To the extent the recorded amount of goodwill of a reporting unit exceeds the implied fair value determined in step two, an impairment loss would be reflected in results of operations.

PNMR periodically updates its quantitative analysis for both PNM and TNMP. The use of a quantitative approach in a given period is not necessarily an indication that a potential impairment has been identified under a qualitative approach.

When PNMR performs a quantitative analysis for PNM or TNMP, a discounted cash flow methodology is primarily used to estimate the fair value of the reporting unit. This analysis requires significant judgments, including estimations of future cash flows, which is dependent on internal forecasts, estimations of long-term growth rates for the business, and determination of appropriate weighted average cost of capital for the reporting unit. Changes in these estimates and assumptions could materially affect the determination of fair value and the conclusion of impairment.

When PNMR performs a qualitative or quantitative analysis for PNM or TNMP, PNMR considers market and macroeconomic factors including changes in growth rates, changes in the Weighted Average Cost of Capital (“WACC”), and changes in discount rates. PNMR also evaluates its stock price relative to historical performance, industry peers, and to major market indices, including an evaluation of PNMR’s market capitalization relative to the carrying value of its reporting units.

For its annual evaluations performed as of April 1, 2023, PNMR performed a qualitative analysis for both the PNM and TNMP reporting units. In addition to the typical considerations discussed above, the qualitative analysis considered changes in the Company’s expectations of future financial performance since the April 1, 2018 quantitative analysis and the previous qualitative analyses through April 1, 2022 performed for PNM, as well as the April 1, 2020 quantitative analysis and the previous qualitative analyses through April 1, 2022 performed for TNMP. This analysis considered Company specific events such as the Merger, potential impacts of legal and regulatory matters discussed in Note 11 and Note 12, including potential outcomes in PNM’s San Juan Abandonment Application, PNM’s Four Corners Abandonment Application, and PNM’s PVNGS Leased Interest Abandonment Application. Based on an evaluation of these and other factors, the Company determined it was not more likely than not that the April 1, 2023 carrying values of PNM and TNMP exceeded their fair value. Since the April 1, 2023 annual evaluation, there have been no events or indications that the fair values of the reporting units with recorded goodwill have decreased below their carrying values.

For its annual evaluations performed as of April 1, 2022, PNMR performed a qualitative analysis for both the PNM and TNMP reporting units. In addition to the typical considerations discussed above, the qualitative analysis considered changes in the Company’s expectations of future financial performance since the April 1, 2018 quantitative analysis and the previous qualitative analyses through April 1, 2021 performed for PNM, as well as the April 1, 2020 quantitative analysis and the previous qualitative analyses through April 1, 2021 performed for TNMP. The April 1, 2018 quantitative evaluations indicated the fair value of the PNM reporting unit, which has goodwill of $51.6 million, exceeded its carrying value by approximately 19%. Based on an evaluation of these and other factors, the Company determined it was not more likely than not that the April 1, 2022 carrying value of PNM exceeded its fair value. The April 1, 2020 quantitative evaluations indicated the fair value of the TNMP reporting unit, which has goodwill of $226.7 million, exceeded its carrying value by approximately 38%. Based on an evaluation of these and other factors, the Company determined it was not more likely than not that the April 1, 2022 carrying value of TNMP exceeded its fair value.

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Merger

9 Months Ended

Sep. 30, 2023

Business Combinations [Abstract]

Merger

Merger

On October 20, 2020, PNMR, Avangrid and Merger Sub entered into the Merger Agreement pursuant to which Merger Sub will merge with and into PNMR, with PNMR surviving the Merger as a wholly-owned subsidiary of Avangrid. Pursuant to the Merger Agreement, each issued and outstanding share of PNMR common stock at the Effective Time will be converted into the right to receive $50.30 in cash.

The proposed Merger has been unanimously approved by the Boards of Directors of PNMR, Avangrid and Merger Sub and approved by PNMR shareholders at the Special Meeting of Shareholders held on February 12, 2021.

The Merger Agreement provided that it may be terminated by each of PNMR and Avangrid under certain circumstances, including if the Effective Time shall not have occurred by the January 20, 2022 End Date; however, either PNMR or Avangrid could extend the End Date to April 20, 2022 if all conditions to closing have been satisfied other than the obtaining of all required regulatory approvals. As discussed below, in December 2021, the NMPRC issued an order rejecting the stipulation agreement relating to the Merger. In January 2022, PNMR, Avangrid and Merger Sub entered into an Amendment to the Merger Agreement pursuant to which PNMR and Avangrid agreed to extend the End Date to April 20, 2023. On April 12, 2023, PNMR, Avangrid, and Merger Sub entered into Amendment No. 2 to the Merger Agreement whereby all of the parties agreed to extend the End Date to July 20, 2023. On June 19, 2023, PNMR, Avangrid, and Merger Sub entered into

Amendment No. 3 to the Merger Agreement whereby all of the parties agreed to extend the End Date to December 31, 2023, subject to a three-month extension by PNMR and Avangrid by mutual consent if all of the conditions to closing, other than the conditions relating to regulatory approval, have been satisfied as of December 31, 2023.

The Merger is subject to certain regulatory approvals, including from the NMPRC. The Joint Applicants to the NMPRC application and a number of intervening parties had entered into an amended stipulation and agreement in the Joint Application for approval of Merger pending before the NMPRC. An evidentiary hearing was held in August 2021. On November 1, 2021, a Certification of Stipulation was issued by the hearing examiner, which recommended against approval of the amended stipulation. On December 8, 2021, the NMPRC issued an order adopting the Certification of Stipulation, rejecting the amended stipulation reached by the parties. On January 3, 2022, PNMR and Avangrid filed a notice of appeal with the NM Supreme Court. On February 2, 2022, PNMR and Avangrid filed a statement of issues outlining the argument for appeal. On April 7, 2022, PNMR and Avangrid filed their Brief in Chief with the NM Supreme Court. Answer briefs from the NMPRC were filed on June 14, 2022, and response briefs were filed on August 5, 2022. On March 8, 2023, PNM, Avangrid, and the NMPRC filed a motion with the NM Supreme Court to dismiss the appeal and remand the proceeding back to the NMPRC for further proceedings. On May 15, 2023, the NM Supreme Court issued an order denying the joint motion to dismiss the appeal, retaining jurisdiction over the case. Oral arguments were held on September 15, 2023.

With respect to other regulatory proceedings related to the Merger, in 2021 PNMR received clearances for the Merger from the Federal Trade Commission (“FTC”) under the HSR Act, CFIUS, the FCC, FERC, the PUCT, and the NRC. As a result of the delay in closing of the Merger due to the need to obtain NMPRC approval, PNMR and Avangrid were required to make a new filing under the HSR Act and request extensions of approvals previously received from the FCC and NRC. PNM has received approval from the FCC that runs through March 3, 2024, approval from the NRC that runs through May 25, 2024 and clearance under the HSR Act through March 10, 2024. No additional approvals are required from CFIUS, FERC or the PUCT.

Consummation of the Merger remains subject to the satisfaction or waiver of certain customary closing conditions, including, without limitation, the absence of any material adverse effect on PNMR, the receipt of required regulatory approval from the NMPRC, and the agreements relating to the divestiture of Four Corners being in full force and effect and all applicable regulatory filings associated therewith being made. The agreement relating to the divestiture of Four Corners has been entered into and is in full effect and related filings have been made with the NMPRC.

The Merger Agreement provides for certain customary termination rights. The Merger Agreement further provides that, upon termination of the Merger Agreement under certain specified circumstances (including if Avangrid terminates the Merger Agreement due to a change in recommendation of the Board or if PNMR terminates the Merger Agreement to accept a superior proposal (as defined in the Merger Agreement) and in either case prior to PNMR’s shareholder having approved the Merger), PNMR will be required to pay Avangrid a termination fee of $130.0 million. In addition, the Merger Agreement provides that (i) if the Merger Agreement is terminated by either party due to a failure of a regulatory closing condition and such failure is the result of Avangrid’s breach of its regulatory covenants or (ii) Avangrid fails to effect the closing when all closing conditions have been satisfied and it is otherwise obligated to do so under the Merger Agreement, then, in either such case, upon termination of the Merger Agreement, Avangrid will be required to pay PNMR a termination fee of $184.0 million as the sole and exclusive remedy. Upon the termination of the Merger Agreement under certain specified circumstances involving a breach of the Merger Agreement, either PNMR or Avangrid will be required to reimburse the other party’s reasonable and documented out-of-pocket fees and expenses up to $10.0 million (which amount will be credited toward, and offset against, the payment of any applicable termination fee).

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Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

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Significant Accounting Policies and Responsibility for Financial Statements (Policies)

9 Months Ended

Sep. 30, 2023

Accounting Policies [Abstract]

Principles of Consolidation

Principles of Consolidation

The Condensed Consolidated Financial Statements of each of PNMR, PNM, and TNMP include their accounts and those of subsidiaries in which that entity owns a majority voting interest. PNM also consolidates Valencia. See Note 6. PNM owns undivided interests in several jointly-owned power plants and records its pro-rata share of the assets, liabilities, and expenses for those plants. The agreements for the jointly-owned plants provide that if an owner were to default on its payment obligations, the non-defaulting owners would be responsible for their proportionate share of the obligations of the defaulting owner. In exchange, the non-defaulting owners would be entitled to their proportionate share of the generating capacity of the defaulting owner. There have been no such payment defaults under any of the agreements for the jointly-owned plants.

PNMR Services Company expenses, which represent costs that are primarily driven by corporate level activities, are charged to the business segments. These services are billed at cost and are reflected as general and administrative expenses in the business segments. Other significant intercompany transactions between PNMR, PNM, and TNMP include interest and income tax sharing payments, as well as equity transactions, and interconnection billings. See Note 15. All intercompany transactions and balances have been eliminated.

New Accounting Pronouncements

New Accounting Pronouncements

Information concerning a recently issued accounting pronouncement that has not yet been adopted by the Company is presented below. The Company does not expect difficulty in adopting this standard by its required effective date.

Accounting Standards Update 2022-03 - Fair Value Measurement (Topic 820): Fair Value Measurements of Equity Securities Subject to Contractual Sale Restrictions

In June 2022, the FASB issued ASU 2022-03 clarifying that a contractual restriction on the sale of an equity security is not considered part of the unit of account of the security and, therefore, is not considered in measuring fair value. The amendment also clarifies that an entity cannot, as a separate unit of account, recognize and measure a contractual sale restriction. Disclosure requirements from the amendment include disclosure of the fair value of equity securities subject to contractual sale restrictions that are reflected in the balance sheet; the nature and remaining duration of the restriction(s); and the circumstances that could cause a lapse in the restriction(s). ASU 2022-03 is effective for the Company beginning January 1, 2024 with early adoption for both interim and annual periods being permitted. ASU 2022-03 is to be applied prospectively with any adjustments recognized in earnings and disclosed on the date of adoption.

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Segment Information (Tables)

9 Months Ended

Sep. 30, 2023

Segment Reporting [Abstract]

Summary of Financial Information by Segment

The following tables present summarized financial information for PNMR by segment. PNM and TNMP each operate in only one segment. Therefore, tabular segment information is not presented for PNM and TNMP.

PNMR SEGMENT INFORMATION

	PNM		TNMP		Corporate and Other		PNMR Consolidated
	(In thousands)
Three Months Ended September 30, 2023
Electric operating revenues	$	350,334	$	155,517	$	—	$	505,851
Cost of energy	174,362		35,951		—		210,313
Utility margin	175,972		119,566		—		295,538
Other operating expenses	100,739		35,055		(7,100)		128,694
Depreciation and amortization	44,537		28,357		7,298		80,192
Operating income (loss)	30,696		56,154		(198)		86,652
Interest income (expense)	5,323		178		(135)		5,366
Other income (deductions)	(7,598)		2,448		619		(4,531)
Interest charges	(22,354)		(12,095)		(15,389)		(49,838)
Segment earnings (loss) before income taxes	6,067		46,685		(15,103)		37,649
Income taxes (benefit)	(7,199)		7,181		(5,249)		(5,267)
Segment earnings (loss)	13,266		39,504		(9,854)		42,916
Valencia non-controlling interest	(5,058)		—		—		(5,058)
Subsidiary preferred stock dividends	(132)		—		—		(132)
Segment earnings (loss) attributable to PNMR	$	8,076	$	39,504	$	(9,854)	$	37,726
Nine Months Ended September 30, 2023
Electric operating revenues	$	1,118,741	$	408,343	$	—	$	1,527,084
Cost of energy	517,824		106,627		—		624,451
Utility margin	600,917		301,716		—		902,633
Other operating expenses	305,615		101,302		(19,762)		387,155
Depreciation and amortization	132,287		83,746		21,372		237,405
Operating income (loss)	163,015		116,668		(1,610)		278,073
Interest income (expense)	15,542		413		(387)		15,568
Other income	3,130		4,096		1,148		8,374
Interest charges	(61,242)		(33,932)		(41,486)		(136,660)
Segment earnings (loss) before income taxes	120,445		87,245		(42,335)		165,355
Income taxes (benefit)	12,041		13,076		(12,375)		12,742
Segment earnings (loss)	108,404		74,169		(29,960)		152,613
Valencia non-controlling interest	(14,172)		—		—		(14,172)
Subsidiary preferred stock dividends	(396)		—		—		(396)
Segment earnings (loss) attributable to PNMR	$	93,836	$	74,169	$	(29,960)	$	138,045
At September 30, 2023:
Total Assets	$	6,731,852	$	3,039,357	$	279,632	$	10,050,841
Goodwill	$	51,632	$	226,665	$	—	$	278,297

	PNM		TNMP		Corporate and Other		PNMR Consolidated
	(In thousands)
Three Months Ended September 30, 2022
Electric operating revenues	$	597,337	$	132,551	$	—	$	729,888
Cost of energy	303,351		30,988		—		334,339
Utility margin	293,986		101,563		—		395,549
Other operating expenses	108,710		32,766		(5,260)		136,216
Depreciation and amortization	45,361		24,960		6,249		76,570
Operating income (loss)	139,915		43,837		(989)		182,763
Interest income (expense)	3,888		148		(67)		3,969
Other income (deductions)	(14,443)		2,243		181		(12,019)
Interest charges	(15,467)		(9,851)		(9,208)		(34,526)
Segment earnings (loss) before income taxes	113,893		36,377		(10,083)		140,187
Income taxes (benefit)	12,121		4,946		(3,617)		13,450
Segment earnings (loss)	101,772		31,431		(6,466)		126,737
Valencia non-controlling interest	(4,172)		—		—		(4,172)
Subsidiary preferred stock dividends	(132)		—		—		(132)
Segment earnings (loss) attributable to PNMR	$	97,468	$	31,431	$	(6,466)	$	122,433
Nine Months Ended September 30, 2022
Electric operating revenues	$	1,312,800	$	360,936	$	—	$	1,673,736
Cost of energy	606,129		92,220		—		698,349
Utility margin	706,671		268,716		—		975,387
Other operating expenses	335,173		89,723		(15,835)		409,061
Depreciation and amortization	137,132		72,914		19,057		229,103
Operating income (loss)	234,366		106,079		(3,222)		337,223
Interest income (expense)	10,288		1,435		(135)		11,588
Other income (deductions)	(81,475)		4,303		384		(76,788)
Interest charges	(44,562)		(28,017)		(17,384)		(89,963)
Segment earnings (loss) before income taxes	118,617		83,800		(20,357)		182,060
Income taxes (benefit)	11,762		11,258		(6,038)		16,982
Segment earnings (loss)	106,855		72,542		(14,319)		165,078
Valencia non-controlling interest	(10,897)		—		—		(10,897)
Subsidiary preferred stock dividends	(396)		—		—		(396)
Segment earnings (loss) attributable to PNMR	$	95,562	$	72,542	$	(14,319)	$	153,785
At September 30, 2022:
Total Assets	$	6,113,416	$	2,673,546	$	241,928	$	9,028,890
Goodwill	$	51,632	$	226,665	$	—	$	278,297

Public Utilities General Disclosures

PNM and TNMP do not intend for utility margin to represent any financial measure as defined by GAAP however, the calculation of utility margin, as presented, most closely compares to gross margin as defined by GAAP. Reconciliations between utility margin and gross margin are presented below.

	PNM		TNMP		Corporate and Other		PNMR Consolidated
	(In thousands)
Three Months Ended September 30, 2023
Gross margin	$	95,721	$	81,457	$	—	$	177,178
Energy production costs	20,388		—		—		20,388
Transmission and distribution costs	15,326		9,752		—		25,078
Depreciation and amortization	44,537		28,357		—		72,894		1
Utility margin	$	175,972	$	119,566	$	—	$	295,538
Nine Months Ended September 30, 2023
Gross margin	$	356,317	$	189,199	$	—	$	545,516
Energy production costs	68,345		—		—		68,345
Transmission and distribution costs	43,968		28,771		—		72,739
Depreciation and amortization	132,287		83,746		—		216,033		1
Utility margin	$	600,917	$	301,716	$	—	$	902,633

	PNM		TNMP		Corporate and Other		PNMR Consolidated
	(In thousands)
Three Months Ended September 30, 2022
Gross margin	$	201,607	$	67,614	$	—	$	269,221
Energy production costs	34,469		—		—		34,469
Transmission and distribution costs	12,549		8,989		—		21,538
Depreciation and amortization	45,361		24,960		—		70,321		1
Utility margin	$	293,986	$	101,563	$	—	$	395,549
Nine Months Ended September 30, 2022
Gross margin	$	421,327	$	172,320	$	—	$	593,647
Energy production costs	110,534		—		—		110,534
Transmission and distribution costs	37,678		23,482		—		61,160
Depreciation and amortization	137,132		72,914		—		210,046		1
Utility margin	$	706,671	$	268,716	$	—	$	975,387

1 Corporate and Other depreciation and amortization represents corporate level activities that are billed at cost and reflected as general and administrative expenses at PNM and TNMP and therefore are not a component of gross margin or utility margin. See Note 1.

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Accumulated Other Comprehensive Income (Loss) (Tables)

9 Months Ended

Sep. 30, 2023

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

Information regarding accumulated other comprehensive income (loss) for the nine months ended September 30, 2023 and 2022 is as follows:

	Accumulated Other Comprehensive Income (Loss)
	PNM						Corporate and Other		PNMR Consolidated
	Unrealized Gains on Available-for-Sale Debt Securities		Pension Liability Adjustment				Fair Value Adjustment for Cash Flow Hedges
					Total				Total
	(In thousands)
Balance at December 31, 2022	$	7,422	$	(81,757)	$	(74,335)	$	8,287	$	(66,048)
Amounts reclassified from AOCI (pre-tax)	(4,111)		3,582		(529)		5,286		4,757
Income tax impact of amounts reclassified	1,044		(909)		135		(1,343)		(1,208)
Other OCI changes (pre-tax)	2,491		—		2,491		(2,386)		105
Income tax impact of other OCI changes	(632)		—		(632)		606		(26)
Net after-tax change	(1,208)		2,673		1,465		2,163		3,628
Balance at September 30, 2023	$	6,214	$	(79,084)	$	(72,870)	$	10,450	$	(62,420)

Balance at December 31, 2021	$	11,715	$	(83,651)	$	(71,936)	$	—	$	(71,936)
Amounts reclassified from AOCI (pre-tax)	(3,426)		5,328		1,902		(1,767)		135
Income tax impact of amounts reclassified	870		(1,353)		(483)		449		(34)
Other OCI changes (pre-tax)	(8,170)		—		(8,170)		10,391		2,221
Income tax impact of other OCI changes	2,075		—		2,075		(2,640)		(565)
Net after-tax change	(8,651)		3,975		(4,676)		6,433		1,757
Balance at September 30, 2022	$	3,064	$	(79,676)	$	(76,612)	$	6,433	$	(70,179)

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Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

Computation of Earnings Per Share

Information regarding the computation of earnings per share is as follows:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2023		2022		2023		2022
	(In thousands, except per share amounts)
Net Earnings Attributable to PNMR	$	37,726	$	122,433	$	138,045	$	153,785
Average Number of Common Shares:
Outstanding during period	85,835		85,835		85,835		85,835
Vested awards of restricted stock	254		266		257		291
Average Shares – Basic	86,089		86,101		86,092		86,126
Dilutive Effect of Common Stock Equivalents:
Restricted stock	32		35		36		52
2023 Forward Sale Agreements	8		—		23		—
Average Shares – Diluted	86,129		86,136		86,151		86,178
Net Earnings Per Share of Common Stock:
Basic	$	0.44	$	1.42	$	1.60	$	1.79
Diluted	$	0.44	$	1.42	$	1.60	$	1.78

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Electric Operating Revenues (Tables)

9 Months Ended

Sep. 30, 2023

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

A disaggregation of revenues from contracts with customers by the type of customer is presented in the table below.

	PNM		TNMP		PNMR Consolidated
Three Months Ended September 30, 2023	(In thousands)
Electric Operating Revenues:
Contracts with customers:
Retail electric revenue
Residential	$	111,406	$	69,556	$	180,962
Commercial	106,237		41,662		147,899
Industrial	19,891		10,665		30,556
Public authority	6,099		1,708		7,807
Economy energy service	4,958		—		4,958
Transmission	37,466		34,980		72,446
Wholesale energy service	62,804		—		62,804
Miscellaneous	1,507		984		2,491
Total revenues from contracts with customers	350,368		159,555		509,923
Alternative revenue programs	(939)		(4,038)		(4,977)
Other electric operating revenues	905		—		905
Total Electric Operating Revenues	$	350,334	$	155,517	$	505,851
Nine Months Ended September 30, 2023
Electric Operating Revenues:
Contracts with customers:
Retail electric revenue
Residential	$	339,307	$	147,413	$	486,720
Commercial	309,560		114,357		423,917
Industrial	65,524		36,359		101,883
Public authority	15,822		4,996		20,818
Economy energy service	24,999		—		24,999
Transmission	124,396		100,100		224,496
Wholesale energy sales	213,098		—		213,098
Miscellaneous	4,293		2,832		7,125
Total revenues from contracts with customers	1,096,999		406,057		1,503,056
Alternative revenue programs	9,963		2,286		12,249
Other electric operating revenues	11,779		—		11,779
Total Electric Operating Revenues	$	1,118,741	$	408,343	$	1,527,084

	PNM		TNMP		PNMR Consolidated
Three Months Ended September 30, 2022	(In thousands)
Electric Operating Revenues:
Contracts with customers:
Retail electric revenue
Residential	$	150,683	$	60,878	$	211,561
Commercial	136,314		41,705		178,019
Industrial	25,609		9,450		35,059
Public authority	6,893		1,720		8,613
Economy energy service	11,784		—		11,784
Transmission	44,513		28,881		73,394
Wholesale energy sales	220,219		—		220,219
Miscellaneous	1,368		961		2,329
Total revenues from contracts with customers	597,383		143,595		740,978
Alternative revenue programs	(599)		(11,044)		(11,643)
Other electric operating revenues	553		—		553
Total Electric Operating Revenues	$	597,337	$	132,551	$	729,888
Nine Months Ended September 30, 2022
Electric Operating Revenues:
Contracts with customers:
Retail electric revenue
Residential	$	368,159	$	146,367	$	514,526
Commercial	325,492		111,365		436,857
Industrial	68,351		27,388		95,739
Public authority	16,063		4,806		20,869
Economy energy service	31,726		—		31,726
Transmission	114,699		83,731		198,430
Wholesale energy sales	365,554		—		365,554
Miscellaneous	4,043		2,887		6,930
Total revenues from contracts with customers	1,294,087		376,544		1,670,631
Alternative revenue programs	1,039		(15,608)		(14,569)
Other electric operating revenues	17,674		—		17,674
Total Electric Operating Revenues	$	1,312,800	$	360,936	$	1,673,736

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Variable Interest Entities (Tables)

9 Months Ended

Sep. 30, 2023

Variable Interest Entities [Abstract]

Summarized Financial Information

Summarized financial information for Valencia is as follows:

	Results of Operations
	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(In thousands)
Operating revenues	$	6,679	$	5,640	$	19,427	$	15,670
Operating expenses	1,621		1,468		5,255		4,773
Earnings attributable to non-controlling interest	$	5,058	$	4,172	$	14,172	$	10,897

	Financial Position
	September 30,		December 31,
	2023		2022
	(In thousands)
Current assets	$	4,162	$	3,429
Net property, plant, and equipment	47,963		50,094
Total assets	52,125		53,523
Current liabilities	952		529
Owners’ equity – non-controlling interest	$	51,173	$	52,994

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Fair Value of Derivative and Other Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2023

Fair Value of Derivative and Other Financial Instruments [Abstract]

Summary of Derivatives

PNM’s commodity derivative instruments that are recorded at fair value, all of which are accounted for as economic hedges and considered Level 2 fair value measurements, are presented in the following line items on the Condensed Consolidated Balance Sheets:

	Economic Hedges
	September 30, 2023		December 31, 2022
	(In thousands)
Other current assets	$	603	$	9,780
Other current liabilities	(3,514)		(19,209)
Net	$	(2,911)	$	(9,429)

Schedule of Commodity Contract Volume Positions

Commodity contract volume positions are presented in MMBTU for gas related contracts and in MWh for power related contracts. The table below presents PNM’s net buy (sell) volume positions:

	Economic Hedges
	MMBTU	MWh
September 30, 2023	—	290,295
December 31, 2022	—	432,200

Schedule of Gross Realized Gains and Losses

Gains and losses recognized on the Condensed Consolidated Statements of Earnings related to investment securities in the NDT, SJGS decommissioning, and coal mine reclamation trusts are presented in the following table:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2023		2022		2023		2022
	(In thousands)
Equity securities:
Net gains (losses) from equity securities sold	$	(189)	$	(2,210)	$	1,758	$	1,735
Net gains (losses) from equity securities still held	(4,946)		(4,061)		3,673		(52,320)
Total net gains (losses) on equity securities	(5,135)		(6,271)		5,431		(50,585)
Available-for-sale debt securities:
Net (losses) on debt securities	(3,269)		(9,465)		(3,616)		(33,519)
Net gains (losses) on investment securities	$	(8,404)	$	(15,736)	$	1,815	$	(84,104)

Gross realized losses shown below exclude the (increase)/decrease in realized impairment losses of $(0.6) million and $2.8 million for the three and nine months ended September 30, 2023 and $(7.1) million and $(28.7) million for the three and nine months ended September 30, 2022.

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2023		2022		2023		2022
	(In thousands)
Proceeds from sales	$	137,797	$	92,371	$	412,574	$	323,251
Gross realized gains	4,022		2,366		14,464		20,089
Gross realized (losses)	(6,876)		(6,908)		(19,088)		(23,109)

Investments Classified by Contractual Maturity Date

At September 30, 2023, the available-for-sale debt securities held by PNM, had the following final maturities:

	Fair Value
	(In thousands)
Within 1 year	$	34,601
After 1 year through 5 years	67,254
After 5 years through 10 years	67,273
After 10 years through 15 years	18,916
After 15 years through 20 years	13,634
After 20 years	43,825
	$	245,503

Schedule of Investments

Items recorded at fair value by PNM on the Condensed Consolidated Balance Sheets are presented below by level of the fair value hierarchy along with gross unrealized gains on investments in available-for-sale debt securities:

			GAAP Fair Value Hierarchy
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Unrealized Gains
	(In thousands)
September 30, 2023
Cash and cash equivalents	$	37,930	$	37,930	$	—
Equity securities:
Corporate stocks, common	71,359		71,359		—
Corporate stocks, preferred	4,523		509		4,014
Mutual funds and other	62,062		62,062		—
Available-for-sale debt securities:
U.S. government	40,256		37,987		2,269		$	1,637
International government	10,498		—		10,498		738
Municipals	48,364		—		48,364		139
Corporate and other	146,385				146,385		5,853
	$	421,377	$	209,847	$	211,530	$	8,367
December 31, 2022
Cash and cash equivalents	$	66,843	$	66,843	$	—
Equity securities:
Corporate stocks, common	40,103		40,103		—
Corporate stocks, preferred	5,191		790		4,401
Mutual funds and other	66,359		66,359		—
Available-for-sale debt securities:
U.S. government	45,905		45,645		260		$	1,334
International government	9,762		—		9,762		1,117
Municipals	43,136		—		43,136		1,062
Corporate and other	140,177		—		140,177		6,473
	$	417,476	$	219,740	$	197,736	$	9,986

Schedule of Carrying Amount and Fair Value of Items Not Recorded at Fair Value

The carrying amounts and fair values of long-term debt, all of which are considered Level 2 fair value measurements and are not recorded at fair value on the Condensed Consolidated Balance Sheets, are presented below:

	Carrying Amount		Fair Value
September 30, 2023	(In thousands)
PNMR	$	4,405,121	$	3,933,137
PNM	2,145,200		1,868,133
TNMP	1,260,864		1,065,003
December 31, 2022
PNMR	$	4,077,387	$	3,726,195
PNM	2,000,900		1,789,186
TNMP	1,076,875		937,009

Schedule Of Commodity Contract Contingent Consideration

The table below presents information about PNM’s contingent requirement to provide collateral under certain commodity contracts having an objectively determinable collateral provision, that are in net liability positions, and that are not fully collateralized with cash. Contractual liability represents those commodity derivative contracts recorded at fair value on the balance sheet, determined on an individual contract basis without offsetting amounts for individual contracts that are in an asset position and could be offset under master netting agreements with the same counterparty. Cash collateral posted under these contracts does not reflect letters of credit under the Company’s revolving credit facilities that may have been issued as collateral. Net exposure is the net contractual liability for all contracts, including those designated as normal purchase and normal sale, offset by existing collateral and by any offsets available under master netting agreements, including both assets and liability positions.

Contingent Feature - Credit Rating Downgrade	Contractual Liability		Existing Cash Collateral		Net Exposure
	(In thousands)
September 30, 2023	$	3,514	$	—	$	3,514
December 31, 2022	$	15,288	$	—	$	13,087

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Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Summary of Activity

The following table summarizes the weighted-average assumptions used to determine the awards grant date fair value:

	Nine Months Ended September 30,
Restricted Shares and Performance Based Shares	2023			2022
Expected quarterly dividends per share	$	0.3675		$	0.3475
Risk-free interest rate	4.46		%	1.46		%

The following table summarizes activity in restricted stock awards, including performance-based and market-based shares for the nine months ended September 30, 2023:

	Restricted Stock
	Shares	Weighted- Average Grant Date Fair Value
Outstanding at December 31, 2022	182,446	$	42.09
Granted	194,453	45.00
Released	(197,424)	43.99
Forfeited	(1,222)	42.57
Outstanding at September 30, 2023	178,253	$	43.31

The following table provides additional information concerning restricted stock activity, including performance-based and market-based shares:

	Nine Months Ended September 30,
Restricted Stock	2023		2022
Weighted-average grant date fair value	$	45.00	$	41.04
Total fair value of restricted shares that vested (in thousands)	$	9,635	$	7,804

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Financing (Tables)

9 Months Ended

Sep. 30, 2023

Debt Disclosure [Abstract]

Schedule of Derivative Liabilities at Fair Value

PNMR has entered into hedging agreements that establish a fixed rate for the indicated amount of variable rate debt, above which a customary spread is applied, which is subject to change if there is a change in PNMR’s credit rating. As of September 30, 2023, PNMR’s hedging agreements are as follows:

		Variable Rate		Established
Effective Date	Maturity Date	Debt Hedged		Fixed Rate
		(In millions)		(Percent)
March 17, 2023	September 30, 2023	$	150.0	4.57	%
October 31, 2022	December 31, 2023	100.0		4.65
October 31, 2022	December 31, 2023	100.0		4.66
September 30, 2022	December 31, 2023	100.0		4.17
September 30, 2022	December 31, 2023	100.0		4.18
May 20, 2022	December 31, 2023	100.0		2.52
May 2, 2022	December 31, 2023	150.0		2.65
May 2, 2022	December 31, 2023	200.0		2.65
January 1, 2024	December 31, 2024	100.0		3.32
January 1, 2024	December 31, 2024	100.0		3.32
January 1, 2024	December 31, 2024	100.0		3.38
January 1, 2024	December 31, 2024	150.0		3.62
January 1, 2024	December 31, 2024	150.0		3.57

Schedule of Short-term Debt

Short-term debt outstanding consists of:

	September 30, 2023			December 31, 2022
	Balance Outstanding		Weighted Average Interest Rate	Balance Outstanding		Weighted Average Interest Rate
	(In thousands)			(In thousands)
PNM:
PNM Revolving Credit Facility	$	126,900	6.68%	$	145,900	5.67%
PNM New Mexico Credit Facility	40,000		6.67	40,000		5.68
	166,900			185,900
TNMP Revolving Credit Facility	39,800		6.29	36,700		5.29
PNMR Revolving Credit Facility	198,800		6.92	9,400		5.90
	$	405,500		$	232,000

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Pension and Other Postretirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2023

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The following table presents the components of the PNM Plans’ net periodic benefit cost:

	Three Months Ended September 30,
	Pension Plan				OPEB Plan				Executive Retirement Program
	2023		2022		2023		2022		2023		2022
	(In thousands)
Components of Net Periodic Benefit Cost
Service cost	$	—	$	—	$	—	$	2	$	—	$	—
Interest cost	5,913		4,215		675		479		135		90
Expected return on plan assets	(7,299)		(7,140)		(1,242)		(1,088)		—		—
Amortization of net loss	2,646		3,948		—		—		38		81
Amortization of prior service cost	—		—		—		—		—		—
Net Periodic Benefit Cost (Income)	$	1,260	$	1,023	$	(567)	$	(607)	$	173	$	171
	Nine Months Ended September 30,
	Pension Plan				OPEB Plan				Executive Retirement Program
	2023		2022		2023		2022		2023		2022
	(In thousands)
Components of Net Periodic Benefit Cost
Service cost	$	—	$	—	$	—	$	6	$	—	$	—
Interest cost	17,740		12,643		2,027		1,437		405		270
Expected return on plan assets	(21,897)		(21,422)		(3,727)		(3,264)		—		—
Amortization of net loss	7,937		11,846		—		—		114		245
Amortization of prior service cost	—		—		—		—		—		—
Net Periodic Benefit Cost (Income)	$	3,780	$	3,067	$	(1,700)	$	(1,821)	$	519	$	515

The following table presents the components of the TNMP Plans’ net periodic benefit cost:

	Three Months Ended September 30,
	Pension Plan				OPEB Plan				Executive Retirement Program
	2023		2022		2023		2022		2023		2022
	(In thousands)
Components of Net Periodic Benefit Cost
Service cost	$	—	$	—	$	5	$	9	$	—	$	—
Interest cost	601		430		106		77		3		2
Expected return on plan assets	(674)		(618)		(120)		(104)		—		—
Amortization of net (gain) loss	110		233		(190)		(130)		—		—
Amortization of prior service cost	—		—		—		—		—		—
Net Periodic Benefit Cost (Income)	$	37	$	45	$	(199)	$	(148)	$	3	$	2
	Nine Months Ended September 30,
	Pension Plan				OPEB Plan				Executive Retirement Program
	2023		2022		2023		2022		2023		2022
	(In thousands)
Components of Net Periodic Benefit Cost
Service cost	$	—	$	—	$	16	$	27	$	—	$	—
Interest cost	1,802		1,290		319		231		9		8
Expected return on plan assets	(2,023)		(1,854)		(361)		(312)		—		—
Amortization of net (gain) loss	329		699		(570)		(390)		—		—
Amortization of prior service cost	—		—		—		—		—		—
Net Periodic Benefit Cost (Income)	$	108	$	135	$	(596)	$	(444)	$	9	$	8

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Regulatory and Rate Matters (Tables)

9 Months Ended

Sep. 30, 2023

Regulated Operations [Abstract]

Schedule of Rate Increases for Transmission Costs

The following sets forth TNMP’s recent interim transmission cost rate increases:

Effective Date	Approved Increase in Rate Base		Annual Increase in Revenue
	(In millions)
September 20, 2021	$	41.2	$	6.3
March 25, 2022	95.6		14.2
September 22, 2022	36.0		5.3
May 12, 2023	150.5		19.4
September 6, 2023	21.4		4.2

Schedule Of Interim Distribution Rate Increases

The following sets forth TNMP’s recent interim distribution rate increases:

Effective Date	Approved Increase in Rate Base		Annual Increase in Revenue
	(In millions)
September 1, 2021	$	104.5	$	13.5
September 1, 2022	95.7		6.8
September 1, 2023	157.0		14.5

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Lease Commitments (Tables)

9 Months Ended

Sep. 30, 2023

Leases [Abstract]

Assets and Liabilities, Lessee

Information related to the Company’s operating leases recorded on the Condensed Consolidated Balance Sheets is presented below:

	September 30, 2023						December 31, 2022
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Operating leases:
Operating lease assets, net of amortization	$	183,889	$	2,099	$	185,989	$	52,556	$	3,426	$	55,982
Current portion of operating lease liabilities	10,992		991		11,983		17,239		1,543		18,781
Long-term portion of operating lease liabilities	167,891		959		168,849		39,633		1,703		41,336

Information related to the Company’s financing leases recorded on the Condensed Consolidated Balance Sheets is presented below:

	September 30, 2023						December 31, 2022
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Financing leases:
Non-utility property	$	25,144	$	22,931	$	48,143	$	19,324	$	20,084	$	39,738
Accumulated depreciation	(10,905)		(10,898)		(21,851)		(7,726)		(8,202)		(16,189)
Non-utility property, net	14,239		12,033		26,292		11,598		11,882		23,549
Other current liabilities	$	4,339	$	4,459	$	8,813	$	3,441	$	3,867	$	7,363
Other deferred credits	9,888		7,593		17,486		8,079		8,028		16,123

Information concerning the weighted average remaining lease terms and the weighted average discount rates used to determine the Company’s lease liabilities as of September 30, 2023 is presented below:

	PNM		TNMP		PNMR Consolidated
Weighted average remaining lease term (years):
Operating leases	17.08		1.84		16.92
Financing leases	3.91		3.08		3.53
Weighted average discount rate:
Operating leases	5.61	%	4.15	%	5.60	%
Financing leases	4.43	%	4.24	%	4.34	%

Lease, Cost

Information for the components of lease expense is as follows:

	Three Months Ended September 30, 2023						Nine Months Ended September 30, 2023
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Operating lease cost:	$	4,001	$	345	$	4,346	$	10,377	$	1,175	$	11,552
Amounts capitalized	(71)		(302)		(373)		(334)		(1,031)		(1,365)
Total operating lease expense	3,930		43		3,973		10,043		144		10,187
Financing lease cost:
Amortization of right-of-use assets	1,193		1,183		2,389		3,325		3,345		6,718
Interest on lease liabilities	148		126		274		411		349		760
Amounts capitalized	(844)		(1,071)		(1,915)		(2,313)		(3,076)		(5,389)
Total financing lease expense	497		238		748		1,423		618		2,089
Variable lease expense	360		—		360		982		—		982
Short-term lease expense	174		7		190		438		22		490
Total lease expense for the period	$	4,961	$	288	$	5,271	$	12,886	$	784	$	13,748

	Three Months Ended September 30, 2022						Nine Months Ended September 30, 2022
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Operating lease cost:	$	6,736	$	466	$	7,205	$	20,085	$	1,489	$	21,623
Amounts capitalized	(166)		(410)		(577)		(524)		(1,336)		(1,860)
Total operating lease expense	6,570		56		6,628		19,561		153		19,763
Financing lease cost:
Amortization of right-of-use assets	792		779		1,585		2,293		2,334		4,680
Interest on lease liabilities	84		85		170		231		238		471
Amounts capitalized	(588)		(829)		(1,417)		(1,648)		(2,309)		(3,957)
Total financing lease expense	288		35		338		876		263		1,194
Variable lease expense	262		—		262		629		—		629
Short-term lease expense (1)	568		1		567		2,837		4		2,884
Total lease expense for the period	$	7,688	$	92	$	7,795	$	23,903	$	420	$	24,470

(1) Includes expense of $0.4 million and $2.7 million for the three and nine months ended September 30, 2022 for rental of temporary cooling towers associated with the SJGS Unit 1 outage. These amounts are offset with insurance reimbursements of $0.4 million and $2.7 million for the three and nine months ended September 30, 2022.

Schedule of Leases, Supplemental Cash Flows

Supplemental cash flow information related to the Company’s leases is as follows:

	Nine Months Ended						Nine Months Ended
	September 30, 2023						September 30, 2022
	PNM		TNMP		PNMR Consolidated		PNM		TNMP		PNMR Consolidated
	(In thousands)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	18,714	$	113	$	18,827	$	25,503	$	118	$	25,670
Operating cash flows from financing leases	135		47		183		67		32		101
Finance cash flows from financing leases	1,221		565		1,836		810		371		1,249
Non-cash information related to right-of-use assets obtained in exchange for lease obligations:
Operating leases	$	138,878	$	6	$	138,884	$	2,924	$	—	$	2,924
Financing leases	5,977		3,508		9,485		3,032		2,349		5,381

Lessee, Operating Lease, Liability, Maturity

Future expected lease payments are shown below:

	As of September 30, 2023
	PNM						TNMP				PNMR Consolidated
			Operating										Operating
	Financing		Battery Storage		Other		Financing		Operating		Financing		Battery Storage		Other
	(In thousands)
Remainder of 2023	$	1,344	$	2,947	$	145	$	1,298	$	264	$	2,646	$	2,947	$	409
2024	4,510		11,786		8,154		4,564		945		9,088		11,786		9,099
2025	3,522		11,786		7,433		3,480		770		7,004		11,786		8,203
2026	3,010		11,786		7,024		2,299		76		5,309		11,786		7,100
2027	1,788		11,786		7,028		1,010		—		2,798		11,786		7,028
Later years	1,386		184,041		17,619		219		—		1,605		184,041		17,619
Total minimum lease payments	15,560		234,132		47,403		12,870		2,055		28,450		234,132		49,458
Less: Imputed interest	1,333		95,916		6,736		818		105		2,151		95,916		6,842
Lease liabilities	$	14,227	$	138,216	$	40,667	$	12,052	$	1,950	$	26,299	$	138,216	$	42,616

Finance Lease, Liability, Maturity

Future expected lease payments are shown below:

	As of September 30, 2023
	PNM						TNMP				PNMR Consolidated
			Operating										Operating
	Financing		Battery Storage		Other		Financing		Operating		Financing		Battery Storage		Other
	(In thousands)
Remainder of 2023	$	1,344	$	2,947	$	145	$	1,298	$	264	$	2,646	$	2,947	$	409
2024	4,510		11,786		8,154		4,564		945		9,088		11,786		9,099
2025	3,522		11,786		7,433		3,480		770		7,004		11,786		8,203
2026	3,010		11,786		7,024		2,299		76		5,309		11,786		7,100
2027	1,788		11,786		7,028		1,010		—		2,798		11,786		7,028
Later years	1,386		184,041		17,619		219		—		1,605		184,041		17,619
Total minimum lease payments	15,560		234,132		47,403		12,870		2,055		28,450		234,132		49,458
Less: Imputed interest	1,333		95,916		6,736		818		105		2,151		95,916		6,842
Lease liabilities	$	14,227	$	138,216	$	40,667	$	12,052	$	1,950	$	26,299	$	138,216	$	42,616

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Related Party Transactions (Tables)

9 Months Ended

Sep. 30, 2023

Related Party Transactions [Abstract]

Schedule of Related Party Transactions

The table below summarizes the nature and amount of related party transactions of PNMR, PNM, TNMP, and NMRD:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2023		2022		2023		2022
	(In thousands)
Services billings:
PNMR to PNM	$	29,509	$	26,281	$	90,151	$	82,352
PNMR to TNMP	10,976		9,554		34,703		30,110
PNM to TNMP	100		107		269		322
TNMP to PNMR	35		35		106		106
PNMR to NMRD	71		81		235		226
Renewable energy purchases:
PNM from NMRD	3,652		3,221		9,761		9,642
Interconnection and facility study billings:
PNM to NMRD	—		—		—		—
PNM to PNMR	—		—		—		—
NMRD to PNM	—		—		—		—
Interest billings:
PNMR to PNM	8		4		18		13
PNM to PNMR	153		73		426		143
PNMR to TNMP	117		50		128		166
Income tax sharing payments:
PNMR to PNM	—		—		—		—
TNMP to PNMR	—		—		—		—

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Equity Method Investment (Tables)

9 Months Ended

Sep. 30, 2023

Equity Method Investments and Joint Ventures [Abstract]

Marketable Securities

Summarized financial information for NMRD is as follows:

	Results of Operations
	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(In thousands)
Operating revenues	$	4,020	$	3,407	$	10,525	$	10,224
Operating expenses	1,743		2,381		6,127		7,172
Net earnings	$	2,277	$	1,026	$	4,398	$	3,052

	Financial Position
	September 30,		December 31,
	2023		2022
	(In thousands)
Current assets	$	9,529	$	8,357
Net property, plant, and equipment	229,659		169,440
Non-current assets	2,480		9,631
Total assets	241,668		187,428
Current liabilities	4,176		5,822
Non-current liabilities	355		366
Owners’ equity	$	237,137	$	181,240

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Significant Accounting Policies and Responsibility for Financial Statements (Details) - USD ($)		1 Months Ended			3 Months Ended		9 Months Ended
	Aug. 01, 2023	Sep. 30, 2023	Sep. 30, 2022	Aug. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Subsequent Event [Line Items]
Payment defaults under agreements		$ 0			$ 0		$ 0
Dividends declared per common share (dollars per share)	$ 0.3675	$ 0.3675	$ 0.3475	$ 0.3475	$ 0.3675	$ 0.3475	$ 1.1025	$ 1.0425
Dividends declared on common stock					$ 63,088,000	$ 59,655,000	$ 94,634,000	$ 119,311,000
PNMR
Subsequent Event [Line Items]
Equity contribution from parent					0	68,000,000	0	68,000,000
Public Service Company of New Mexico
Subsequent Event [Line Items]
Dividends declared on common stock					0	85,000,000	0	85,000,000
Texas-New Mexico Power Company
Subsequent Event [Line Items]
Equity contribution from parent							0	68,000,000
Dividends declared on common stock					$ 0	$ 0	$ 0	$ 0

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Segment Information - Summarized Financial Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) segment	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Apr. 01, 2020 USD ($)	Apr. 01, 2018 USD ($)
Segment Reporting Information, Profit (Loss) [Abstract]
Electric operating revenues	$ 505,851	$ 729,888	$ 1,527,084	$ 1,673,736
Utility margin	177,178	269,221	545,516	593,647
Other operating expenses	128,694	136,216	387,155	409,061
Depreciation and amortization	80,192	76,570	237,405	229,103
Operating income	86,652	182,763	278,073	337,223
Interest income (expense)	5,366	3,969	15,568	11,588
Other income	(4,531)	(12,019)	8,374	(76,788)
Interest Charges	(49,838)	(34,526)	(136,660)	(89,963)
Earnings before Income Taxes	37,649	140,187	165,355	182,060
Income taxes (benefit)	(5,267)	13,450	12,742	16,982
Net Earnings	42,916	126,737	152,613	165,078
Valencia non-controlling interest	(5,058)	(4,172)	(14,172)	(10,897)
Subsidiary preferred stock dividends	(132)	(132)	(396)	(396)
Net Earnings Available for PNM Common Stock	37,726	122,433	138,045	153,785
Total Assets	10,050,841	9,028,890	10,050,841	9,028,890	$ 9,257,377
Goodwill	278,297	278,297	$ 278,297	278,297	278,297
PNM
Segment Reporting Information [Line Items]
Number of operating segments | segment			1
Segment Reporting Information, Profit (Loss) [Abstract]
Electric operating revenues	350,334	597,337	$ 1,118,741	1,312,800
Depreciation and amortization	44,537	45,361	132,287	137,132
Operating income	30,696	139,915	163,015	234,366
Interest Charges	(22,354)	(15,467)	(61,242)	(44,562)
Earnings before Income Taxes	6,067	113,893	120,445	118,617
Income taxes (benefit)	(7,199)	12,121	12,041	11,762
Net Earnings	13,266	101,772	108,404	106,855
Valencia non-controlling interest	(5,058)	(4,172)	(14,172)	(10,897)
Subsidiary preferred stock dividends	(132)	(132)	(396)	(396)
Net Earnings Available for PNM Common Stock	8,076	97,468	93,836	95,562
Total Assets	6,731,852		6,731,852		6,272,166
Goodwill	51,632		$ 51,632		51,632		$ 51,600
TNMP
Segment Reporting Information [Line Items]
Number of operating segments | segment			1
Segment Reporting Information, Profit (Loss) [Abstract]
Electric operating revenues	155,517	132,551	$ 408,343	360,936
Cost of energy	35,951	30,988	106,627	92,220
Depreciation and amortization	28,357	24,960	83,746	72,914
Operating income	56,154	43,837	116,668	106,079
Interest Charges	(12,095)	(9,851)	(33,932)	(28,017)
Earnings before Income Taxes	46,685	36,377	87,245	83,800
Income taxes (benefit)	7,181	4,946	13,076	11,258
Net Earnings			74,169	72,542
Total Assets	3,039,357		3,039,357		2,746,601
Goodwill	226,665		226,665		$ 226,665	$ 226,700
PNM
Segment Reporting Information, Profit (Loss) [Abstract]
Utility margin	95,721	201,607	356,317	421,327
Other operating expenses	100,739	108,710	305,615	335,173
Depreciation and amortization	44,537	45,361	132,287	137,132
Operating income	30,696	139,915	163,015	234,366
Interest income (expense)	5,323	3,888	15,542	10,288
Other income	(7,598)	(14,443)	3,130	(81,475)
Interest Charges	(22,354)	(15,467)	(61,242)	(44,562)
Earnings before Income Taxes	6,067	113,893	120,445	118,617
Income taxes (benefit)	(7,199)	12,121	12,041	11,762
Net Earnings	13,266	101,772	108,404	106,855
Valencia non-controlling interest	(5,058)	(4,172)	(14,172)	(10,897)
Subsidiary preferred stock dividends	(132)	(132)	(396)	(396)
Net Earnings Available for PNM Common Stock	8,076	97,468	93,836	95,562
Total Assets	6,731,852	6,113,416	6,731,852	6,113,416
Goodwill	51,632	51,632	51,632	51,632
TNMP
Segment Reporting Information, Profit (Loss) [Abstract]
Utility margin	81,457	67,614	189,199	172,320
Other operating expenses	35,055	32,766	101,302	89,723
Depreciation and amortization	28,357	24,960	83,746	72,914
Operating income	56,154	43,837	116,668	106,079
Interest income (expense)	178	148	413	1,435
Other income	2,448	2,243	4,096	4,303
Interest Charges	(12,095)	(9,851)	(33,932)	(28,017)
Earnings before Income Taxes	46,685	36,377	87,245	83,800
Income taxes (benefit)	7,181	4,946	13,076	11,258
Net Earnings	39,504	31,431	74,169	72,542
Valencia non-controlling interest	0	0	0	0
Subsidiary preferred stock dividends	0	0	0	0
Net Earnings Available for PNM Common Stock	39,504	31,431	74,169	72,542
Total Assets	3,039,357	2,673,546	3,039,357	2,673,546
Goodwill	226,665	226,665	226,665	226,665
Corporate and Other
Segment Reporting Information, Profit (Loss) [Abstract]
Utility margin	0	0	0	0
Other operating expenses	(7,100)	(5,260)	(19,762)	(15,835)
Depreciation and amortization	7,298	6,249	21,372	19,057
Operating income	(198)	(989)	(1,610)	(3,222)
Interest income (expense)	(135)	(67)	(387)	(135)
Other income	619	181	1,148	384
Interest Charges	(15,389)	(9,208)	(41,486)	(17,384)
Earnings before Income Taxes	(15,103)	(10,083)	(42,335)	(20,357)
Income taxes (benefit)	(5,249)	(3,617)	(12,375)	(6,038)
Net Earnings	(9,854)	(6,466)	(29,960)	(14,319)
Valencia non-controlling interest	0	0	0	0
Subsidiary preferred stock dividends	0	0	0	0
Net Earnings Available for PNM Common Stock	(9,854)	(6,466)	(29,960)	(14,319)
Total Assets	279,632	241,928	279,632	241,928
Goodwill	0	0	0	0
Energy
Segment Reporting Information, Profit (Loss) [Abstract]
Electric operating revenues	505,851	729,888	1,527,084	1,673,736
Cost of energy	210,313	334,339	624,451	698,349
Utility margin	295,538	395,549	902,633	975,387
Energy | PNM
Segment Reporting Information, Profit (Loss) [Abstract]
Cost of energy	174,362	303,351	517,824	606,129
Energy | PNM
Segment Reporting Information, Profit (Loss) [Abstract]
Electric operating revenues	350,334	597,337	1,118,741	1,312,800
Cost of energy	174,362	303,351	517,824	606,129
Utility margin	175,972	293,986	600,917	706,671
Energy | TNMP
Segment Reporting Information, Profit (Loss) [Abstract]
Electric operating revenues	155,517	132,551	408,343	360,936
Cost of energy	35,951	30,988	106,627	92,220
Utility margin	119,566	101,563	301,716	268,716
Energy | Corporate and Other
Segment Reporting Information, Profit (Loss) [Abstract]
Electric operating revenues	0	0	0	0
Cost of energy	0	0	0	0
Utility margin	$ 0	$ 0	$ 0	$ 0

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Segment Information - Schedule of Gross Margin (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Gross margin	$ 177,178	$ 269,221	$ 545,516	$ 593,647
Transmission and distribution costs	25,078	21,538	72,739	61,160
Depreciation and amortization	72,894	70,321	216,033	210,046
Utility margin	295,538	395,549	902,633	975,387
Energy Production
Segment Reporting Information [Line Items]
Energy production costs	20,388	34,469	68,345	110,534
Public Service Company of New Mexico
Segment Reporting Information [Line Items]
Gross margin	95,721	201,607	356,317	421,327
Transmission and distribution costs	15,326	12,549	43,968	37,678
Depreciation and amortization	44,537	45,361	132,287	137,132
Utility margin	175,972	293,986	600,917	706,671
Public Service Company of New Mexico | Energy Production
Segment Reporting Information [Line Items]
Energy production costs	20,388	34,469	68,345	110,534
Texas-New Mexico Power Company
Segment Reporting Information [Line Items]
Gross margin	81,457	67,614	189,199	172,320
Transmission and distribution costs	9,752	8,989	28,771	23,482
Depreciation and amortization	28,357	24,960	83,746	72,914
Utility margin	119,566	101,563	301,716	268,716
Texas-New Mexico Power Company | Energy Production
Segment Reporting Information [Line Items]
Energy production costs	0	0	0	0
Corporate and Other
Segment Reporting Information [Line Items]
Gross margin	0	0	0	0
Transmission and distribution costs	0	0	0	0
Depreciation and amortization	0	0	0	0
Utility margin	0	0	0	0
Corporate and Other | Energy Production
Segment Reporting Information [Line Items]
Energy production costs	$ 0	$ 0	$ 0	$ 0

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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 2,313,596	$ 2,185,687	$ 2,244,926	$ 2,222,929
Total Other Comprehensive Income (Loss)	(3,185)	6,646	3,628	1,757
Ending balance	2,286,384	2,255,728	2,286,384	2,255,728
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(59,235)	(76,825)	(66,048)	(71,936)
Amounts reclassified from AOCI (pre-tax)			4,757	135
Income tax impact of amounts reclassified			(1,208)	(34)
Other OCI changes (pre-tax)			105	2,221
Income tax impact of other OCI changes			(26)	(565)
Total Other Comprehensive Income (Loss)	(3,185)	6,646	3,628	1,757
Ending balance	(62,420)	(70,179)	(62,420)	(70,179)
Fair Value Adjustment for Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			8,287	0
Amounts reclassified from AOCI (pre-tax)			5,286	(1,767)
Income tax impact of amounts reclassified			(1,343)	449
Other OCI changes (pre-tax)			(2,386)	10,391
Income tax impact of other OCI changes			606	(2,640)
Total Other Comprehensive Income (Loss)			2,163	6,433
Ending balance	10,450	6,433	10,450	6,433
PNM
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	2,047,702	2,005,541	1,960,324	2,015,264
Total Other Comprehensive Income (Loss)	(1,794)	1,901	1,465	(4,676)
Ending balance	2,053,804	2,019,592	2,053,804	2,019,592
PNM | Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(71,076)	(78,513)	(74,335)	(71,936)
Amounts reclassified from AOCI (pre-tax)			(529)	1,902
Income tax impact of amounts reclassified			135	(483)
Other OCI changes (pre-tax)			2,491	(8,170)
Income tax impact of other OCI changes			(632)	2,075
Total Other Comprehensive Income (Loss)	(1,794)	1,901	1,465	(4,676)
Ending balance	(72,870)	(76,612)	(72,870)	(76,612)
PNM | Unrealized Gains on Available-for-Sale Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			7,422	11,715
Amounts reclassified from AOCI (pre-tax)			(4,111)	(3,426)
Income tax impact of amounts reclassified			1,044	870
Other OCI changes (pre-tax)			2,491	(8,170)
Income tax impact of other OCI changes			(632)	2,075
Total Other Comprehensive Income (Loss)			(1,208)	(8,651)
Ending balance	6,214	3,064	6,214	3,064
PNM | Pension Liability Adjustment
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			(81,757)	(83,651)
Amounts reclassified from AOCI (pre-tax)			3,582	5,328
Income tax impact of amounts reclassified			(909)	(1,353)
Other OCI changes (pre-tax)			0	0
Income tax impact of other OCI changes			0	0
Total Other Comprehensive Income (Loss)			2,673	3,975
Ending balance	$ (79,084)	$ (79,676)	$ (79,084)	$ (79,676)

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Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net Earnings Attributable to PNMR	$ 37,726	$ 122,433	$ 138,045	$ 153,785
Average Number of Common Shares:
Outstanding during period (in shares)	85,835	85,835	85,835	85,835
Vested awards of restricted stock (in shares)	254	266	257	291
Average Shares – Basic (in shares)	86,089	86,101	86,092	86,126
Dilutive Effect of Common Stock Equivalents:
Restricted stock (in shares)	32	35	36	52
PNMR 2020 Forward Equity Sale Agreements (in shares)	8	0	23	0
Average Shares – Diluted (in shares)	86,129	86,136	86,151	86,178
Net Earnings Per Share of Common Stock:
Basic (in dollars per share)	$ 0.44	$ 1.42	$ 1.60	$ 1.79
Diluted (in dollars per share)	$ 0.44	$ 1.42	$ 1.60	$ 1.78

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Electric Operating Revenues - Narrative (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2023 USD ($) utility	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Disaggregation of Revenue [Line Items]
Number of regulated utilities | utility	2
Other receivables, allowance for credit loss, period increase	$ 0	$ 0
Contract assets	19,500,000		$ 11,900,000
PNM
Disaggregation of Revenue [Line Items]
Accounts receivable	$ 131,000,000		$ 151,400,000

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Electric Operating Revenues - Disaggregation of revenues (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	$ 509,923	$ 740,978	$ 1,503,056	$ 1,670,631
Alternative revenue programs	(4,977)	(11,643)	12,249	(14,569)
Other electric operating revenue	905	553	11,779	17,674
Electric Operating Revenues	505,851	729,888	1,527,084	1,673,736
PNM
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	350,368	597,383	1,096,999	1,294,087
Alternative revenue programs	(939)	(599)	9,963	1,039
Other electric operating revenue	905	553	11,779	17,674
Electric Operating Revenues	350,334	597,337	1,118,741	1,312,800
TNMP
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	159,555	143,595	406,057	376,544
Alternative revenue programs	(4,038)	(11,044)	2,286	(15,608)
Other electric operating revenue	0	0	0	0
Electric Operating Revenues	155,517	132,551	408,343	360,936
Energy
Disaggregation of Revenue [Line Items]
Electric Operating Revenues	505,851	729,888	1,527,084	1,673,736
Energy | Residential
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	180,962	211,561	486,720	514,526
Energy | Commercial
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	147,899	178,019	423,917	436,857
Energy | Industrial
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	30,556	35,059	101,883	95,739
Energy | Public authority
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	7,807	8,613	20,818	20,869
Energy | Economy energy service
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	4,958	11,784	24,999	31,726
Energy | PNM | Residential
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	111,406	150,683	339,307	368,159
Energy | PNM | Commercial
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	106,237	136,314	309,560	325,492
Energy | PNM | Industrial
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	19,891	25,609	65,524	68,351
Energy | PNM | Public authority
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	6,099	6,893	15,822	16,063
Energy | PNM | Economy energy service
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	4,958	11,784	24,999	31,726
Energy | TNMP | Residential
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	69,556	60,878	147,413	146,367
Energy | TNMP | Commercial
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	41,662	41,705	114,357	111,365
Energy | TNMP | Industrial
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	10,665	9,450	36,359	27,388
Energy | TNMP | Public authority
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	1,708	1,720	4,996	4,806
Energy | TNMP | Economy energy service
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	0	0	0
Transmission
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	72,446	73,394	224,496	198,430
Transmission | PNM
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	37,466	44,513	124,396	114,699
Transmission | TNMP
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	34,980	28,881	100,100	83,731
Wholesale energy sales
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	62,804	220,219	213,098	365,554
Wholesale energy sales | PNM
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	62,804	220,219	213,098	365,554
Wholesale energy sales | TNMP
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	0	0	0
Miscellaneous
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	2,491	2,329	7,125	6,930
Miscellaneous | PNM
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	1,507	1,368	4,293	4,043
Miscellaneous | TNMP
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	$ 984	$ 961	$ 2,832	$ 2,887

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Variable Interest Entities (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($) MW	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) MW	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Jan. 31, 2016 USD ($)
Results of Operations
Operating revenues	$ 505,851	$ 729,888	$ 1,527,084	$ 1,673,736
Operating expenses	419,199	547,125	1,249,011	1,336,513
Earnings attributable to non-controlling interest	5,058	4,172	14,172	10,897
Financial Position
Current assets	489,227		489,227		$ 410,978
Assets	10,050,841	9,028,890	10,050,841	9,028,890	9,257,377
Current liabilities	1,478,573		1,478,573		890,370
Owners’ equity – non-controlling interest	$ 51,173		$ 51,173		52,994
San Juan Generating Station | Coal supply
Variable Interest Entity [Line Items]
Cash used to support bank letter or credit arrangement						$ 30,300
PNM
Variable Interest Entity [Line Items]
Number of megawatts purchased (in megawatts) | MW	64.1		64.1
Results of Operations
Operating revenues	$ 350,334	597,337	$ 1,118,741	1,312,800
Operating expenses	319,638	457,422	955,726	1,078,434
Earnings attributable to non-controlling interest	5,058	4,172	14,172	10,897
Financial Position
Current assets	414,625		414,625		345,645
Assets	6,731,852		6,731,852		6,272,166
Current liabilities	1,028,881		1,028,881		692,155
Owners’ equity – non-controlling interest	51,173		51,173		52,994
PNM | Valencia
Variable Interest Entity [Line Items]
Payment for fixed costs	5,100	5,000	15,200	14,600
Payment for variable costs	1,400	700	$ 4,100	1,100
Long-term contract option to purchase, ownership percentage (up to)			50.00%
Long-term contract option to purchase, purchase price - percentage of adjusted NBV			50.00%
Long-term contract option to purchase, purchase price - percentage of FMV			50.00%
Results of Operations
Operating revenues	6,679	5,640	$ 19,427	15,670
Operating expenses	1,621	1,468	5,255	4,773
Earnings attributable to non-controlling interest	5,058	$ 4,172	14,172	$ 10,897
Financial Position
Current assets	4,162		4,162		3,429
Net property, plant, and equipment	47,963		47,963		50,094
Assets	52,125		52,125		53,523
Current liabilities	952		952		529
Owners’ equity – non-controlling interest	$ 51,173		$ 51,173		$ 52,994
PNM | Purchased through May 2028 | Valencia
Variable Interest Entity [Line Items]
Number of megawatts purchased (in megawatts) | MW	155		155

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Fair Value of Derivative and Other Financial Instruments - Narrative (Details)	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2023 USD ($) MW	Sep. 30, 2022 USD ($)	Jun. 30, 2022 MW power_purchase_agreement	Sep. 30, 2023 USD ($) MW	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	May 31, 2022 MW	Jan. 01, 2018 MW
Debt Securities, Available-for-sale [Line Items]
Number of purchase power agreements, non derivatives | power_purchase_agreement			2
Obligations to return cash						$ 200,000
PNM
Debt Securities, Available-for-sale [Line Items]
Number of purchase power agreements | power_purchase_agreement			3
Expected exposure to market risk (in megawatts) | MW	36			36			50	65
Amounts recognized for right to reclaim cash	$ 0			$ 0		0
Cash collateral under margin arrangements	1,000,000			1,000,000		10,500,000
(Increase)/decrease in other than temporary losses of available-for-sale securities, net portion recognized in earnings	(600,000)	$ (7,100,000)		2,800,000	$ (28,700,000)
PNM | Commodity derivatives | Designated as Hedging Instrument
Debt Securities, Available-for-sale [Line Items]
Other current assets	603,000			603,000		9,780,000
Current derivative liability	$ 3,514,000			$ 3,514,000		19,209,000
PNM | Portfolio One
Debt Securities, Available-for-sale [Line Items]
Number of megawatts available in purchase power agreement (in megawatts) | MW	85		85
PNM | Portfolio Two
Debt Securities, Available-for-sale [Line Items]
Number of megawatts available in purchase power agreement (in megawatts) | MW			40	375
PNM | Portfolio Three
Debt Securities, Available-for-sale [Line Items]
Number of megawatts available in purchase power agreement (in megawatts) | MW			150
PNM | Fuel and purchased power costs | Commodity derivatives | Designated as Hedging Instrument
Debt Securities, Available-for-sale [Line Items]
Other current assets						9,800,000
Current derivative liability						19,200,000
PNM | Tri-State
Debt Securities, Available-for-sale [Line Items]
Power to be sold to third party (in megawatts) | MW							100
PNM | Recurring
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities	$ 421,377,000			$ 421,377,000		417,476,000
Nuclear Decommissioning Trust | PNM | Recurring
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities	334,000,000			334,000,000		325,300,000
SJGS Decommissioning Trust | PNM | Recurring
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities	15,300,000			15,300,000		14,700,000
Mine Reclamation Trust | PNM | Recurring
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities	$ 72,100,000			$ 72,100,000		$ 77,500,000

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Fair Value of Derivative and Other Financial Instruments - Overview and Commodity Derivatives (Details) - PNM - Designated as Hedging Instrument - Commodity derivatives - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Other current assets	$ 603	$ 9,780
Other current liabilities	(3,514)	(19,209)
Net	$ (2,911)	$ (9,429)

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Fair Value of Derivative and Other Financial Instruments - Schedule of Commodity Contract Volume Positions (Details)	6 Months Ended		9 Months Ended
	Jun. 30, 2023 MMBTU	Jun. 30, 2023 MWh	Sep. 30, 2023 MMBTU	Sep. 30, 2023 MWh
Commodity derivatives | Designated as Hedging Instrument | Public Service Company of New Mexico
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Economic Hedges (in mmbtu and mwh)	0	432,200	0	290,295

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Fair Value of Derivative and Other Financial Instruments - Schedule of Commodity Contract Contingent Consideration (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Contractual Liability	$ 3,514	$ 15,288
Existing Cash Collateral	0	0
Net Exposure	$ 3,514	$ 13,087

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Fair Value of Derivative and Other Financial Instruments - Investments in NDT and Gross Realized Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Equity securities:
Net gains (losses) from equity securities sold	$ (189)	$ (2,210)	$ 1,758	$ 1,735
Net gains (losses) from equity securities still held	(4,946)	(4,061)	3,673	(52,320)
Total net gains (losses) on equity securities	(5,135)	(6,271)	5,431	(50,585)
Available-for-sale debt securities:
Net (losses) on debt securities	(3,269)	(9,465)	(3,616)	(33,519)
Net gains (losses) on investment securities	$ (8,404)	$ (15,736)	$ 1,815	$ (84,104)

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Fair Value Measures and Disclosures - Gross Realized (Losses) (Details) - PNM - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Debt Securities, Available-for-sale [Line Items]
Proceeds from sales	$ 137,797	$ 92,371	$ 412,574	$ 323,251
Gross realized gains	4,022	2,366	14,464	20,089
Gross realized (losses)	$ (6,876)	$ (6,908)	$ (19,088)	$ (23,109)

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Fair Value of Derivative and Other Financial Instruments - Maturities of Debt Securities (Details) - PNMR and PNM $ in Thousands	Sep. 30, 2023 USD ($)
Available-for-Sale
Within 1 year	$ 34,601
After 1 year through 5 years	67,254
After 5 years through 10 years	67,273
After 10 years through 15 years	18,916
After 15 years through 20 years	13,634
After 20 years	43,825
Available-for-sale debt securities	$ 245,503

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Fair Value of Derivative and Other Financial Instruments - Items Recorded and Presented by Level of Hierarchy (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-term debt	$ 3,933,137	$ 3,726,195
Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-term debt	4,405,121	4,077,387
PNM
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-term debt	1,868,133	1,789,186
PNM | Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-term debt	2,145,200	2,000,900
TNMP
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-term debt	1,065,003	937,009
TNMP | Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-term debt	1,260,864	1,076,875
Recurring | PNM
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	421,377	417,476
Investments, unrealized gain	8,367	9,986
Recurring | PNM | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	209,847	219,740
Recurring | PNM | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	211,530	197,736
Recurring | PNM | Cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	37,930	66,843
Recurring | PNM | Cash and cash equivalents | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	37,930	66,843
Recurring | PNM | Cash and cash equivalents | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Recurring | PNM | Corporate stocks, common
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	71,359	40,103
Recurring | PNM | Corporate stocks, common | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	71,359	40,103
Recurring | PNM | Corporate stocks, common | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Recurring | PNM | Corporate stocks, preferred
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	4,523	5,191
Recurring | PNM | Corporate stocks, preferred | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	509	790
Recurring | PNM | Corporate stocks, preferred | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	4,014	4,401
Recurring | PNM | Mutual funds and other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	62,062	66,359
Recurring | PNM | Mutual funds and other | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	62,062	66,359
Recurring | PNM | Mutual funds and other | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Recurring | PNM | U.S. government
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	40,256	45,905
Investments, unrealized gain	1,637	1,334
Recurring | PNM | U.S. government | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	37,987	45,645
Recurring | PNM | U.S. government | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	2,269	260
Recurring | PNM | International government
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	10,498	9,762
Investments, unrealized gain	738	1,117
Recurring | PNM | International government | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	0	0
Recurring | PNM | International government | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	10,498	9,762
Recurring | PNM | Municipals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	48,364	43,136
Investments, unrealized gain	139	1,062
Recurring | PNM | Municipals | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	0	0
Recurring | PNM | Municipals | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	48,364	43,136
Recurring | PNM | Corporate and other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	146,385	140,177
Investments, unrealized gain	5,853	6,473
Recurring | PNM | Corporate and other | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities		0
Recurring | PNM | Corporate and other | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	$ 146,385	$ 140,177

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Stock-Based Compensation - Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($) shares
Restricted Shares and Performance Based Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized expense related to stock awards | $	$ 5.5
Period of time stock expense is expected to be recognized	2 years 2 months 12 days
Executive | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares awarded in year two (in shares)	143,837
Maximum number of shares awarded in year three (in shares)	149,898
Maximum number of shares awarded in year four (in shares)	141,885
Performance period	3 years
Executive | Performance Shares | Achieved Performance Target For 2019 Through 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares awarded in year one (in shares)	100,991
Performance Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Vesting rate	100.00%
Performance Equity Plan | Non-employee Members of the Board of Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year

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Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Restricted Shares and Performance Based Shares
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected quarterly dividends per share (in dollars per share)	$ 0.3675	$ 0.3475
Risk-free interest rate	4.46%	1.46%
Restricted Stock
Restricted Stock, Shares
Outstanding at beginning of period (in shares)	182,446
Granted (in shares)	194,453
Exercised (in shares)	(197,424)
Forfeited (in shares)	(1,222)
Outstanding at end of period (in shares)	178,253
Restricted Stock, Weighted- Average Grant Date Fair Value
Outstanding at beginning of period (in dollars per share)	$ 42.09
Granted (in dollars per share)	45.00	$ 41.04
Exercised (in dollars per share)	43.99
Forfeited (in dollars per share)	42.57
Outstanding at end of period (in dollars per share)	43.31
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted-average grant date fair value (in dollars per share)	$ 45.00	$ 41.04
Total fair value of restricted shares that vested	$ 9,635	$ 7,804

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Financing - Financing Activities (Details)					3 Months Ended			9 Months Ended
	May 15, 2023 USD ($)	Nov. 10, 2022 USD ($)	Sep. 30, 2022 USD ($)	Aug. 05, 2022 USD ($)	Sep. 30, 2023 USD ($) $ / shares shares	Jun. 30, 2023 USD ($) $ / shares shares	Mar. 31, 2023 $ / shares shares	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2023 USD ($)	Jun. 01, 2023 USD ($)	May 16, 2023 USD ($)	Apr. 28, 2023 USD ($) bond debtInstrument	Dec. 31, 2022 USD ($)	Jun. 01, 2022 USD ($) bond	Apr. 27, 2022 USD ($) bond	Dec. 31, 2021 USD ($)	Jun. 18, 2021 USD ($)
Debt Instrument [Line Items]
Repayments of long-term debt								$ 685,000,000	$ 179,500,000
Fair value of hedge agreements					$ 14,000,000			14,000,000
Bank Of America, N.A.
Debt Instrument [Line Items]
Forward sale agreement (in shares) | shares					2,283,860		504,452
Forward sale agreement (in dollars per share) | $ / shares					$ 44.03		$ 48.49
Wells Fargo Bank, N.A.
Debt Instrument [Line Items]
Forward sale agreement (in shares) | shares							528,082
Forward sale agreement (in dollars per share) | $ / shares							$ 48.30
MUFG Securities EMEA plc
Debt Instrument [Line Items]
Forward sale agreement (in shares) | shares						1,049,116
Forward sale agreement (in dollars per share) | $ / shares						$ 45.49
Other Current Assets
Debt Instrument [Line Items]
Fair value of hedge agreements					$ 4,000,000			4,000,000
Other Deferred Costs Net Including Deferred Finance Costs
Debt Instrument [Line Items]
Fair value of hedge agreements					10,000,000			10,000,000
At-The-Market
Debt Instrument [Line Items]
Distribution agreement		$ 200,000,000
Sale of stock, authorized								$ 200,000,000
PNM
Debt Instrument [Line Items]
Maturity term over which financings require regulator approval (more than)								18 months
Repayments of long-term debt								$ 185,000,000	$ 179,500,000
Number of debt issuances | bond															2
Line of credit
Debt Instrument [Line Items]
Ratio of debt to capital (less than or equal to)								70.00%
Line of credit | PNM 2022 Delayed-Draw Term Loan | Revolving credit facility
Debt Instrument [Line Items]
Financing capacity				$ 225,000,000	$ 225,000,000			$ 225,000,000
Proceeds from long-term lines of credit			$ 45,000,000	$ 180,000,000
Line of credit | PNM and TNMP
Debt Instrument [Line Items]
Ratio of debt to capital (less than or equal to)								65.00%
Unsecured Debt | PNM, Due May 2026
Debt Instrument [Line Items]
Aggregate principal amount												$ 650,000,000
Unsecured Debt | PNM 3.15% Senior Unsecured Notes, Due May 2023
Debt Instrument [Line Items]
Stated interest rate														3.15%
Repayments of long-term debt	$ 55,000,000
Unsecured Debt | PNM | PNM 3.15% Senior Unsecured Notes, Due May 2023
Debt Instrument [Line Items]
Aggregate principal amount														$ 55,000,000
Stated interest rate														3.15%
Unsecured Debt | PNM | PNM 2023 Note Purchase Agreement
Debt Instrument [Line Items]
Aggregate principal amount													$ 200,000,000
Number of debt issuances | debtInstrument													2
Unsecured Debt | PNM | PNM 2023 SUNs At 5.1%, Due April 28, 2035
Debt Instrument [Line Items]
Aggregate principal amount													$ 150,000,000
Stated interest rate													5.51%
Unsecured Debt | PNM | PNM 2023 SUNs At 5.92%, Due April 28, 2053
Debt Instrument [Line Items]
Aggregate principal amount													$ 50,000,000
Stated interest rate													5.92%
Secured Debt | PNM 2023 Term Loan
Debt Instrument [Line Items]
Aggregate principal amount						$ 500,000,000
Variable rate							6.77%
Secured Debt | PNM | TNMP 2023 Bond Purchase Agreement
Debt Instrument [Line Items]
Debt instrument, series of bond issuance | bond													2
Secured Debt | Texas-New Mexico Power Company | TNMP 2023 Bond Purchase Agreement
Debt Instrument [Line Items]
Aggregate principal amount													$ 185,000,000
Secured Debt | Texas-New Mexico Power Company | TNMP 2023 Bond Purchase Agreement At 5.01%, Due April 28, 2033
Debt Instrument [Line Items]
Aggregate principal amount													$ 130,000,000.0
Stated interest rate													5.01%
Secured Debt | Texas-New Mexico Power Company | TNMP 2023 Bond Purchase Agreement At 5.47%, Due July 28, 2053
Debt Instrument [Line Items]
Aggregate principal amount													$ 55,000,000.0
Stated interest rate													5.47%
Bonds | PCRB 1.10%, Due June 2040
Debt Instrument [Line Items]
Aggregate principal amount														$ 130,000,000
Stated interest rate														1.10%
Bonds | PCRB 3.90%, Due June 2028
Debt Instrument [Line Items]
Aggregate principal amount											$ 130,000,000
Stated interest rate											3.90%
Bonds | PNMR 2021 Delayed-Draw Term Loan
Debt Instrument [Line Items]
Variable interest rate					6.37%			6.37%
Bonds | PNMR 2023 Delayed-Draw Term Loan
Debt Instrument [Line Items]
Variable interest rate					6.77%			6.77%
Bonds | PNM | PCRB's
Debt Instrument [Line Items]
Long-term debt															$ 31,500,000		$ 104,500,000
Bonds | PNM | PCRB, 1.05%, Due January 2038
Debt Instrument [Line Items]
Stated interest rate																	1.05%
Long-term debt																	$ 36,000,000
Bonds | PNM | PCRB, 2.125% Due June 2040
Debt Instrument [Line Items]
Stated interest rate																	2.125%
Long-term debt																	$ 37,000,000
Bonds | PNM | PCRB, 1.20% Due June 2040
Debt Instrument [Line Items]
Stated interest rate																	1.20%
Long-term debt																	$ 11,500,000
Bonds | PNM | PCRB, 2.45% Due September 2042
Debt Instrument [Line Items]
Stated interest rate																	2.45%
Long-term debt																	$ 20,000,000
Bonds | PNM | PCRB, 3.00% Due June 2024 (1)
Debt Instrument [Line Items]
Aggregate principal amount															$ 36,000,000
Stated interest rate															3.00%
Bonds | PNM | PCRB, 3.00% Due June 2024 (2)
Debt Instrument [Line Items]
Aggregate principal amount															$ 37,000,000
Stated interest rate															3.00%
Bonds | PNM | PNM 2021 75 Million Term Loan
Debt Instrument [Line Items]
Variable interest rate					6.18%			6.18%
Bonds | Texas-New Mexico Power Company | TNMP 2022 Bond Purchase Agreement
Debt Instrument [Line Items]
Aggregate principal amount																$ 160,000,000
Debt instrument, series of bond issuance | bond																2
Bonds | Texas-New Mexico Power Company | TNMP 2022 Bond Purchase Agreement at 4.13% Due May 12, 2022
Debt Instrument [Line Items]
Aggregate principal amount																$ 65,000,000
Stated interest rate																4.13%
Bonds | Texas-New Mexico Power Company | TNMP 2022 Bond Purchase Agreement at 3.81% Due July 28, 2032
Debt Instrument [Line Items]
Aggregate principal amount																$ 95,000,000
Stated interest rate																3.81%
Term loan agreement with banks | PNM | PNM 2021 75 Million Term Loan
Debt Instrument [Line Items]
Aggregate principal amount																		$ 75,000,000
Bonds | ETBC I | Securitized Bonds | Forecast
Debt Instrument [Line Items]
Aggregate principal amount										$ 343,200,000

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Financing - Short-term Debt and Liquidity (Details)	Jan. 26, 2023 USD ($) extension_option	May 20, 2022 USD ($) extension_option	Mar. 11, 2022 USD ($) extension_option	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)	Aug. 05, 2022 USD ($)	May 13, 2022 USD ($)	Mar. 10, 2022 USD ($)
Short-term Debt [Line Items]
Letters of credit outstanding				$ 3,100,000
PNMR Development
Short-term Debt [Line Items]
Notes payable				0	$ 5,300,000
Revolving credit facility | PNM 2022 Delayed-Draw Term Loan | Line of credit
Short-term Debt [Line Items]
Financing capacity				225,000,000		$ 225,000,000
PNMR Revolving Credit Facility
Short-term Debt [Line Items]
Financing capacity	$ 285,000,000
PNMR Revolving Credit Facility | WEB LOC Facility
Short-term Debt [Line Items]
Letters of credit outstanding				30,300,000
PNM
Short-term Debt [Line Items]
Letters of credit outstanding				0
PNM | PNMR
Short-term Debt [Line Items]
Notes payable				$ 0
PNM | Lines of credit
Short-term Debt [Line Items]
NMPRC approved credit facility		$ 40,000,000
PNM | PNM Revolving Credit Facility
Short-term Debt [Line Items]
Financing capacity	$ 380,000,000
Line of credit facility, interest rate at period end				6.68%	5.67%
PNM | PNM New Mexico Credit Facility
Short-term Debt [Line Items]
Line of credit facility, interest rate at period end				6.67%	5.68%
TNMP
Short-term Debt [Line Items]
Letters of credit outstanding				$ 0
TNMP | PNMR
Short-term Debt [Line Items]
Notes payable				$ 0
TNMP | TNMP Revolving Credit Facility
Short-term Debt [Line Items]
Line of credit facility, interest rate at period end				6.29%	5.29%
PNMR Development | PNMR
Short-term Debt [Line Items]
Notes payable				$ 100,000
PNMR Development | PNMR Revolving Credit Facility
Short-term Debt [Line Items]
Line of credit facility, interest rate at period end				6.92%	5.90%
Revolving credit facility
Short-term Debt [Line Items]
Financing capacity				$ 300,000,000
Number of extensions | extension_option		2
Extension period		1 year
Revolving credit facility | PNM
Short-term Debt [Line Items]
Financing capacity				400,000,000
Number of extensions exercised | extension_option	1
Extension period exercised	1 year
Revolving credit facility | TNMP
Short-term Debt [Line Items]
Financing capacity			$ 100,000,000				$ 100,000,000	$ 75,000,000
Number of extensions | extension_option			2
Extension period	1 year		1 year
Number of extensions exercised | extension_option	1
Extension period exercised	1 year
Revolving credit facility | TNMP | First mortgage bonds
Short-term Debt [Line Items]
Collateral amount							$ 100,000,000
TNMP Revolving Credit Facility | TNMP
Short-term Debt [Line Items]
Financing capacity			$ 75,000,000
TNMP Revolving Credit Facility | TNMP | First mortgage bonds
Short-term Debt [Line Items]
Collateral amount			$ 75,000,000
Senior Unsecured Noted, Pollution Control Revenue Bonds | PNM | Pollution Control Rvenue Bonds, Due June Twenty Twenty Four
Short-term Debt [Line Items]
Financing capacity				198,000,000
Senior Unsecured Noted, Pollution Control Revenue Bonds | TNMP | FMB Notes Due July 2024
Short-term Debt [Line Items]
Financing capacity				$ 80,000,000

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Financing - Schedule of Hedging Arrangements (Details) - Designated as Hedging Instrument - Interest rate contract $ in Thousands	Sep. 30, 2023 USD ($)
Variable Rate Debt, 4.57%, Due September 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative asset, notional amount	$ 150,000
Fixed interest rate	4.57%
Variable Rate Debt, 4.65%, Due December 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative asset, notional amount	$ 100,000
Fixed interest rate	4.65%
Variable Rate Debt, 4.66%, Due December 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative asset, notional amount	$ 100,000
Fixed interest rate	4.66%
Variable Rate Debt, 4.17% Due December 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative asset, notional amount	$ 100,000
Fixed interest rate	4.17%
Variable Rate Debt, 4.18%, Due December 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative asset, notional amount	$ 100,000
Fixed interest rate	4.18%
Variable Rate Debt, 2.52%, Due December 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative asset, notional amount	$ 100,000
Fixed interest rate	2.52%
Variable Rate Debt, 2.65% Due December 2023 (1)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative asset, notional amount	$ 150,000
Fixed interest rate	2.65%
Variable Rate Debt, 2.65%, Due December 2023 (2)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative asset, notional amount	$ 200,000
Fixed interest rate	2.65%
Variable Rate Debt, 3.32%, Due December 2024 (1)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative asset, notional amount	$ 100,000
Fixed interest rate	3.32%
Variable Rate Debt, 3.32%, Due December 2024 (2)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative asset, notional amount	$ 100,000
Fixed interest rate	3.32%
Variable Rate Debt, 3.38%, Due December 2024
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative asset, notional amount	$ 100,000
Fixed interest rate	3.38%
Variable Rate Debt, 3.62%, Due December 2024
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative asset, notional amount	$ 150,000
Fixed interest rate	3.62%
Variable Rate Debt, 3.57%, Due December 2024
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative asset, notional amount	$ 150,000
Fixed interest rate	3.57%

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Financing - Schedule of Short-Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Short-term Debt [Line Items]
Short-term debt	$ 405,500	$ 232,000
PNM
Short-term Debt [Line Items]
Short-term debt	166,900	185,900
Texas-New Mexico Power Company
Short-term Debt [Line Items]
Short-term debt	39,800	36,700
PNM Revolving Credit Facility | PNM
Short-term Debt [Line Items]
Short-term debt	$ 126,900	$ 145,900
Line of credit facility, interest rate at period end	6.68%	5.67%
PNM New Mexico Credit Facility | PNM
Short-term Debt [Line Items]
Short-term debt	$ 40,000	$ 40,000
Line of credit facility, interest rate at period end	6.67%	5.68%
TNMP Revolving Credit Facility | Texas-New Mexico Power Company
Short-term Debt [Line Items]
Short-term debt	$ 39,800	$ 36,700
Line of credit facility, interest rate at period end	6.29%	5.29%
PNMR Revolving Credit Facility | PNMR Development
Short-term Debt [Line Items]
Short-term debt	$ 198,800	$ 9,400
Line of credit facility, interest rate at period end	6.92%	5.90%

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Pension and Other Postretirement Benefit Plans - Schedule of Net Periodic Benefit Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
PNM | Pension Plan
Components of Net Periodic Benefit Cost
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	5,913	4,215	17,740	12,643
Expected return on plan assets	(7,299)	(7,140)	(21,897)	(21,422)
Amortization of net loss	2,646	3,948	7,937	11,846
Amortization of prior service cost	0	0	0	0
Net Periodic Benefit Cost (Income)	1,260	1,023	3,780	3,067
PNM | OPEB Plan
Components of Net Periodic Benefit Cost
Service cost	0	2	0	6
Interest cost	675	479	2,027	1,437
Expected return on plan assets	(1,242)	(1,088)	(3,727)	(3,264)
Amortization of net loss	0	0	0	0
Amortization of prior service cost	0	0	0	0
Net Periodic Benefit Cost (Income)	(567)	(607)	(1,700)	(1,821)
PNM | Executive Retirement Program
Components of Net Periodic Benefit Cost
Service cost	0	0	0	0
Interest cost	135	90	405	270
Expected return on plan assets	0	0	0	0
Amortization of net loss	38	81	114	245
Amortization of prior service cost	0	0	0	0
Net Periodic Benefit Cost (Income)	173	171	519	515
Texas-New Mexico Power Company | Pension Plan
Components of Net Periodic Benefit Cost
Service cost	0	0	0	0
Interest cost	601	430	1,802	1,290
Expected return on plan assets	(674)	(618)	(2,023)	(1,854)
Amortization of net loss	110	233	329	699
Amortization of prior service cost	0	0	0	0
Net Periodic Benefit Cost (Income)	37	45	108	135
Texas-New Mexico Power Company | OPEB Plan
Components of Net Periodic Benefit Cost
Service cost	5	9	16	27
Interest cost	106	77	319	231
Expected return on plan assets	(120)	(104)	(361)	(312)
Amortization of net loss	(190)	(130)	(570)	(390)
Amortization of prior service cost	0	0	0	0
Net Periodic Benefit Cost (Income)	(199)	(148)	(596)	(444)
Texas-New Mexico Power Company | Executive Retirement Program
Components of Net Periodic Benefit Cost
Service cost	0	0	0	0
Interest cost	3	2	9	8
Expected return on plan assets	0	0	0	0
Amortization of net loss	0	0	0	0
Amortization of prior service cost	0	0	0	0
Net Periodic Benefit Cost (Income)	$ 3	$ 2	$ 9	$ 8

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Pension and Other Postretirement Benefit Plans - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pension Plan | PNM
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer			$ 0	$ 0
Estimated employer contributions for remainder of fiscal year through year four	$ 0		0
Estimated future contributions, year five	400,000		$ 400,000
Pension Plan | PNM | Maximum
Defined Benefit Plan Disclosure [Line Items]
Assumptions used calculating net periodic benefit cost, discount rate			5.70%
Pension Plan | Texas-New Mexico Power Company
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer			$ 0	0
Estimated employer contributions for remainder of fiscal year through year four	0		$ 0
Pension Plan | Texas-New Mexico Power Company | Maximum
Defined Benefit Plan Disclosure [Line Items]
Assumptions used calculating net periodic benefit cost, discount rate			5.80%
OPEB Plan | PNM
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer			$ 0	0
Disbursements by employer	100,000	$ 900,000	100,000	2,400,000
Disbursements by employer, year one through four			9,000,000
Estimated disbursement by employer, current year			200,000
OPEB Plan | Texas-New Mexico Power Company
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer	0	0	0	0
Disbursements by employer, year one through four			0
Executive Retirement Program | PNM
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer	400,000	400,000	1,000,000	1,000,000
Disbursements by employer, year one through four			4,500,000
Estimated disbursement by employer, current year			1,300,000
Executive Retirement Program | Texas-New Mexico Power Company
Defined Benefit Plan Disclosure [Line Items]
Disbursements by employer, year one through four			200,000
Estimated disbursement by employer, current year			100,000
Executive Retirement Program | Texas-New Mexico Power Company | Maximum
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer	$ 0	$ 0	$ 0	$ 0

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Commitments and Contingencies - Nuclear Spent Fuel and Waste Disposal (Details) - PNM - Nuclear spent fuel and waste disposal - Palo Verde Nuclear Generating Station - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Public Utilities, Commitments And Contingencies [Line Items]
Estimate of possible loss	$ 59.6
Other deferred credits
Public Utilities, Commitments And Contingencies [Line Items]
Loss contingency accrual	$ 11.2	$ 12.0

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Commitments and Contingencies - Santa Fe Generating Station (Details)		1 Months Ended	24 Months Ended
	Jan. 01, 2020 numberOfAMIMeter	Jul. 31, 2020 numberOfAMIMeter	Dec. 31, 2014 monitoringWell
Commitments and Contingencies Disclosure [Abstract]
Number of field work reports | numberOfAMIMeter	2	2
Number of monitoring wells containing free-phase hydrocarbon products | monitoringWell			1

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Commitments and Contingencies - Coal Supply (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022	Jan. 31, 2016
PNM | Loss on long-term purchase commitment | Surface
Public Utilities, Commitments And Contingencies [Line Items]
Loss contingency accrual	$ 52,900,000	$ 62,600,000
PNM | Loss on long-term purchase commitment | Underground
Public Utilities, Commitments And Contingencies [Line Items]
Loss contingency accrual	28,900,000	28,200,000
PNM | Loss on long-term purchase commitment | San Juan Generating Station | Surface
Public Utilities, Commitments And Contingencies [Line Items]
Estimate of possible loss	56,800,000
PNM | Loss on long-term purchase commitment | San Juan Generating Station | Underground
Public Utilities, Commitments And Contingencies [Line Items]
Estimate of possible loss	33,300,000
Coal supply | San Juan Generating Station
Public Utilities, Commitments And Contingencies [Line Items]
Cash used to support bank letter or credit arrangement			$ 30,300,000
Coal supply | NM Capital | San Juan Generating Station
Public Utilities, Commitments And Contingencies [Line Items]
Requirement to post reclamation bonds	118,700,000
Cash used to support bank letter or credit arrangement	30,300,000
Four Corners CSA | PNM
Public Utilities, Commitments And Contingencies [Line Items]
Funds contributed, mine reclamation trust		2,400,000
Reclamation trust funding, remainder of year	200,000
San Juan Generating Station | Loss on long-term purchase commitment | PNM
Public Utilities, Commitments And Contingencies [Line Items]
Annual funding post-term reclamation trust		$ 10,000,000
Annual funding post-term reclamation trust, remainder of year	0
Annual funding post-term reclamation trust, year one	0
Annual funding post-term reclamation trust, year two	0
San Juan Generating Station and Four Corners | Mine Reclamation Trust | PNM
Public Utilities, Commitments And Contingencies [Line Items]
Customer reclamation funding cost	$ 100,000,000

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Commitments and Contingencies - San Juan County Decommissioning Ordinance (Details) - San Juan Generating Station - Coal-Fired Electricity Generating Facility Demolition And Remediation Ordinance - Public Service Company of New Mexico - USD ($) $ in Millions	1 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Nov. 09, 2021
Public Utilities, Commitments And Contingencies [Line Items]
Initial funding requirement	$ 14.7
Surety bond			$ 46.0
Decrease in decommissioning obligation		$ 21.1

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Commitments and Contingencies - PVNGS Liability and Insurance Matters (Details) - PNM - Palo Verde Nuclear Generating Station - Nuclear plant	9 Months Ended
	Sep. 30, 2023 USD ($) generatingUnit
Public Utilities, Commitments And Contingencies [Line Items]
Number of units | generatingUnit	3
Maximum potential assessment per incident	$ 37,700,000
Annual payment limitation related to incident	5,600,000
Aggregate amount of all risk insurance	2,800,000,000
Maximum amount under nuclear electric insurance limited	5,100,000
Maximum
Public Utilities, Commitments And Contingencies [Line Items]
Liability insurance coverage	16,500,000,000
Liability insurance coverage sublimit	2,250,000,000
Commercial providers
Public Utilities, Commitments And Contingencies [Line Items]
Liability insurance coverage	450,000,000
Industry Wide Retrospective Assessment Program
Public Utilities, Commitments And Contingencies [Line Items]
Liability insurance coverage	$ 16,100,000,000

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Regulatory and Rate Matters - PNM (Details) $ in Millions							3 Months Ended		9 Months Ended
	Jun. 01, 2023 USD ($)	Apr. 17, 2023 USD ($) program	Jan. 03, 2023 USD ($)	Jan. 01, 2023 USD ($)	Dec. 05, 2022 USD ($) MW	Apr. 15, 2020 USD ($) MMBTU program	Sep. 30, 2023 USD ($) $ / MWh MW	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) lease $ / MWh MW	Sep. 30, 2022 USD ($)
Public Utilities, Commitments And Contingencies [Line Items]
Excess return on jurisdictional equity that would require refund							0.50%		0.50%
Return on equity									10.173%
Approved return on equity									10.075%
Allowed return on equity									9.575%
Allowed return on equity, additional									0.50%
PNM
Public Utilities, Commitments And Contingencies [Line Items]
Approved equity capital structure									52.00%
Approved debt capital structure									48.00%
Number of leases renewed | lease									5
Number of megawatts purchased (in megawatts) | MW							64.1		64.1
Non-recurring costs			$ 98.3
Renewable Portfolio Standard | PNM
Public Utilities, Commitments And Contingencies [Line Items]
Number of megawatts of Solar PV facilities | MW							158		158
Current output in the geothermal facility (in megawatts) | MW							11		11
Solar generation capacity (in megawatts) | MW							273.9		273.9
Energy Efficiency and Load Management Program | PNM
Public Utilities, Commitments And Contingencies [Line Items]
Program costs related to energy efficiency, number of programs | program						12
Program costs related to energy efficiency, in year one						$ 31.4
Program costs related to energy efficiency, in year two						31.0
Program costs related to energy efficiency, in year three						$ 29.6
Energy efficiency and load management programs targeted energy savings (in Gigawatts) | MMBTU						94
2024 Plan | PNM
Public Utilities, Commitments And Contingencies [Line Items]
Program costs related to energy efficiency, number of programs | program		10
Program costs related to energy efficiency, in year one		$ 34.5
Program costs related to energy efficiency, in year two		35.4
Program costs related to energy efficiency, in year three		$ 36.5
Integrated Resource Plan, 2011 | PNM
Public Utilities, Commitments And Contingencies [Line Items]
Frequency of IRP filings									3 years
Planning period covered of IRP									20 years
NM 2022 Rate Case | PNM
Public Utilities, Commitments And Contingencies [Line Items]
Recovery of base rate					$ 2,700.0
Revenue deficiency driver, years of operation					6 years
Leased PVNGS capacity, expiration | MW					114
NM 2022 Rate Case | PNM | Non-Fuel Energy
Public Utilities, Commitments And Contingencies [Line Items]
Requested rate increase (decrease)					$ 63.8
NMPRC
Public Utilities, Commitments And Contingencies [Line Items]
Requested return on equity					10.25%
Action plan, covered period									4 years
NMPRC | PNM
Public Utilities, Commitments And Contingencies [Line Items]
Proposed revision to rider that will allow for recovery	$ 59.0			$ 61.0
NMPRC | Renewable Energy Rider | PNM
Public Utilities, Commitments And Contingencies [Line Items]
Recorded revenues from renewable rider							$ 13.0	$ 12.7	$ 47.0	$ 44.5
Minimum | Renewable Portfolio Standard | PNM
Public Utilities, Commitments And Contingencies [Line Items]
Energy efficiency and load management programs targeted energy savings (in Gigawatts) | MMBTU						80
Minimum | Energy Efficiency and Load Management Program | PNM
Public Utilities, Commitments And Contingencies [Line Items]
Profit incentive sliding scale multiplier		0.071				0.071
Maximum | Renewable Portfolio Standard | PNM
Public Utilities, Commitments And Contingencies [Line Items]
Reasonable cost threshold in megawatts per hour | $ / MWh							60		60
Maximum | Energy Efficiency and Load Management Program | PNM
Public Utilities, Commitments And Contingencies [Line Items]
Profit incentive sliding scale multiplier		0.0882
New Mexico Wind | Renewable Portfolio Standard 2014 | PNM
Public Utilities, Commitments And Contingencies [Line Items]
Number of megawatts for wind energy | MW									200
Red Mesa Wind | Renewable Portfolio Standard 2014 | PNM
Public Utilities, Commitments And Contingencies [Line Items]
Number of megawatts for wind energy | MW									102
La Joya Wind | Renewable Portfolio Standard | PNM
Public Utilities, Commitments And Contingencies [Line Items]
Number of megawatts for wind energy | MW									140

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Regulatory and Rate Matters - SJGS Abandonment Application, Fours Corners, PVNGS Leased Interest Abandonment Application, Summer Peak Resource Adequacy, COVID and Transportation Electrification Program (Details) $ in Thousands													1 Months Ended	3 Months Ended		9 Months Ended			12 Months Ended
	Oct. 25, 2023 MW batteryStorageAgreement	Sep. 21, 2023 USD ($)	Aug. 18, 2023 USD ($)	Jul. 18, 2023 MW	Jan. 30, 2023 MW	Nov. 18, 2022 lease MW	Oct. 03, 2022 USD ($)	Jul. 29, 2022 USD ($)	Jul. 19, 2022 MW	Jun. 17, 2022 USD ($)	Jan. 08, 2021 USD ($)	Nov. 01, 2020 USD ($)	Nov. 30, 2020 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($) MW	Sep. 30, 2023 USD ($)	Mar. 31, 2023 MW	Sep. 30, 2022 USD ($) MW	Dec. 31, 2019 USD ($) proceeding	Dec. 31, 2022 USD ($)	Apr. 02, 2021 lease MW	Dec. 31, 2020 USD ($)
Public Utilities, General Disclosures [Line Items]
Electric operating revenues														$ 505,851	$ 729,888	$ 1,527,084		$ 1,673,736
Regulatory disallowance														3,700
Decrease in undepreciated leasehold improvements														88,200		88,200
Increase in deferred regulatory assets														88,200		88,200
Regulatory assets														924,487		924,487				$ 846,686
Regulatory liabilities														764,360		764,360				755,202
Subsequent event
Public Utilities, General Disclosures [Line Items]
Number of battery storage agreements | batteryStorageAgreement	3
PNM
Public Utilities, General Disclosures [Line Items]
Payments for legal settlements								$ 19,800
Proposed rate credits			$ 115,000													115,000
Proposed rate credit payout period			1 year
Securitization bonds, weighted-average maximum rate			5.50%
Electric operating revenues														350,334	$ 597,337	1,118,741		$ 1,312,800
Regulatory disallowance																3,700
Number of leases under which lease term was extended | lease						5															5
Potential loss on rate change																28,800
Number of megawatts, peak during period (in megawatts) | MW				2,162					2,139
Grid modernization investment							$ 344,000
Grid modernization, initial term							6 years
Grid modernization term							11 years
Regulatory assets														846,107		846,107				763,941
Regulatory liabilities														551,747		551,747				556,989
PNM | Four Corners
Public Utilities, General Disclosures [Line Items]
Request issuance of energy transition bonds											$ 300,000
Forecasted undepreciated investment											272,000
Plant decommissioning and coal mine reclamation costs											4,600
Upfront financing costs											7,300
Proceeds from securitization bonds											$ 16,500
Payments for relief from obligations												$ 75,000	$ 15,000
Final payment for relief from obligations													$ 60,000
PNM | Four Corners | PNM
Public Utilities, General Disclosures [Line Items]
Noncontrolling interest, ownership percentage by noncontrolling owners												13.00%
PNM | Deferred COVID-19 Costs | COVID-19
Public Utilities, General Disclosures [Line Items]
Regulatory assets														5,700		5,700				5,700
Regulatory liabilities														900		900				$ 900
PNM | Leased Interest Termination on January 15, 2023
Public Utilities, General Disclosures [Line Items]
Number of leases under which lease term was extended | lease																					4
PNM | Leased Interest Termination on January 15, 2023 | NMPRC
Public Utilities, General Disclosures [Line Items]
Solar generation capacity (in megawatts) | MW																					104
PNM | Leased Interest Termination on January 15, 2024 | NMPRC
Public Utilities, General Disclosures [Line Items]
Solar generation capacity (in megawatts) | MW																					10
PNM | Solar Agreement
Public Utilities, General Disclosures [Line Items]
Solar generation capacity (in megawatts) | MW															300			300
Number of megawatts available in purchase power agreement (in megawatts) | MW					100
PNM | Battery Storage Agreement
Public Utilities, General Disclosures [Line Items]
Solar generation capacity (in megawatts) | MW															300			300
Number of megawatts available in purchase power agreement (in megawatts) | MW					30
PNM | NM 2022 Rate Case
Public Utilities, General Disclosures [Line Items]
Megawatt repurchase | MW						64.1
PNM | Firm Power Purchases
Public Utilities, General Disclosures [Line Items]
Number of megawatts available in purchase power agreement (in megawatts) | MW																	420
PNM | Firm Capacity
Public Utilities, General Disclosures [Line Items]
Number of megawatts available in purchase power agreement (in megawatts) | MW																	40
PNM | Solar Agreement One | Subsequent event
Public Utilities, General Disclosures [Line Items]
Number of megawatts available in purchase power agreement (in megawatts) | MW	100
PNM | Solar Agreement Two | Subsequent event
Public Utilities, General Disclosures [Line Items]
Number of megawatts available in purchase power agreement (in megawatts) | MW	60
PNM | Battery Storage Agreement One | Subsequent event
Public Utilities, General Disclosures [Line Items]
Number of megawatts available in purchase power agreement (in megawatts) | MW	100
PNM | Battery Storage Agreement Two | Subsequent event
Public Utilities, General Disclosures [Line Items]
Number of megawatts available in purchase power agreement (in megawatts) | MW	100
PNM | Battery Storage Agreement Three | Subsequent event
Public Utilities, General Disclosures [Line Items]
Number of megawatts available in purchase power agreement (in megawatts) | MW	50
PNMR and PNM | New Mexico Public Regulation Commission+
Public Utilities, General Disclosures [Line Items]
Electric operating revenues		$ (115,000)
Regulatory liability														115,000		115,000
Regulatory asset, reversal														(2,300)		$ (2,300)
Regulatory disallowance														$ 2,300
San Juan Generating Station | PNM
Public Utilities, General Disclosures [Line Items]
Request issuance of energy transition bonds																			$ 361,000
Forecasted undepreciated investment																			283,000			$ 361,000
Plant decommissioning and coal mine reclamation costs																			28,600
Upfront financing costs																			9,600
Severance costs																			20,000
Proceeds from securitization bonds																			$ 19,800
Number of proceedings | proceeding																			2
Number of recommendations | proceeding																			1
San Juan Generation Station, Unit 1 | PNM
Public Utilities, General Disclosures [Line Items]
Annual rate credits										$ 21,100
San Juan Generating Station, Unit 4 | PNM
Public Utilities, General Disclosures [Line Items]
Annual rate credits										$ 98,300
Number of days to transfer payment										30 days

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Regulatory and Rate Matters - Battery Energy Storage System Certificate of Public Convenience and Necessity ("CCN") (Details) - Public Service Company of New Mexico $ in Millions	May 03, 2023 USD ($) storageSystem MW
Public Utilities, General Disclosures [Line Items]
Number of battery storage systems | storageSystem	2
Battery energy storage systems (in megawatts) | MW	6
Battery energy storage system, costs | $	$ 25.8

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Regulatory and Rate Matters - Meta Platforms Inc. Data Center (Details) - MW		9 Months Ended
	Jul. 24, 2023	Sep. 30, 2023
PNMR Development
Public Utilities, General Disclosures [Line Items]
Ownership		50.00%
Public Service Company of New Mexico
Public Utilities, General Disclosures [Line Items]
Megawatts procured (in megawatts)		180
Public Service Company of New Mexico | Solar Power
Public Utilities, General Disclosures [Line Items]
Megawatts procured (in megawatts)	140
Public Service Company of New Mexico | Battery Storage
Public Utilities, General Disclosures [Line Items]
Megawatts procured (in megawatts)	50

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Regulatory and Rate Matters - Transportation and Electrification Program (TEP) (Details) - Public Service Company of New Mexico $ in Millions	Jun. 01, 2023 USD ($)
Public Utilities, General Disclosures [Line Items]
Expected budgeted expenditures	$ 37.1
Budget period	3 years
Budge dedication to low-income customers	22.00%
Budget eedication to low-income customers	$ 8.0

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Regulatory and Rate Matters - FERC Order 864 (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Public Utilities, General Disclosures [Line Items]
Electric operating revenues	$ 505,851	$ 729,888	$ 1,527,084	$ 1,673,736
Other current liabilities	89,727		89,727		$ 87,037
FERC Order 864
Public Utilities, General Disclosures [Line Items]
Electric operating revenues	(3,100)
Other current liabilities	3,100		3,100
Public Service Company of New Mexico
Public Utilities, General Disclosures [Line Items]
Electric operating revenues	350,334	$ 597,337	1,118,741	$ 1,312,800
Other current liabilities	54,491		54,491		$ 55,350
Public Service Company of New Mexico | FERC Order 864
Public Utilities, General Disclosures [Line Items]
Electric operating revenues	(3,100)
Other current liabilities	$ 3,100		$ 3,100

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Regulatory and Rate Matters - Schedule of Transmission Cost of Service Rates (Details) - PUCT - TNMP - USD ($) $ in Millions	Sep. 06, 2023	May 12, 2023	Sep. 22, 2022	Mar. 25, 2022	Sep. 20, 2021
Public Utilities, General Disclosures [Line Items]
Approved Increase in Rate Base	$ 21.4	$ 150.5	$ 36.0	$ 95.6	$ 41.2
Annual Increase in Revenue	$ 4.2	$ 19.4	$ 5.3	$ 14.2	$ 6.3

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Regulatory and Rate Matters - TNMP Narrative (Details) - TNMP - USD ($) $ in Millions	Sep. 28, 2023	Aug. 24, 2022	May 27, 2022	Mar. 01, 2022
Public Utilities, Commitments And Contingencies [Line Items]
Energy efficiency cost recovery, requested change amount			$ 1.9	$ 7.2
Energy efficiency cost recovery, requested bonus			$ 7.4	$ 2.3
Energy efficiency cost recovery factor, approved settlement amount		$ 7.3
Energy efficiency cost recovery factor, approved performance bonus	$ 1.2	$ 1.9
Energy efficiency cost recovery factor, recovery	$ 6.6

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Regulatory and Rate Matters - Schedule of Interim Distribution Rate Increases (Details) - Texas-New Mexico Power Company - Periodic Distribution Rate Adjustment - USD ($) $ in Millions	Sep. 01, 2023	Sep. 01, 2022	Sep. 01, 2021
Public Utilities, General Disclosures [Line Items]
Approved Increase in Rate Base	$ 157.0	$ 95.7	$ 104.5
Annual Increase in Revenue	$ 14.5	$ 6.8	$ 13.5

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Lease Commitments - Narrative (Details) $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Apr. 30, 2023 USD ($)	Jan. 31, 2023 USD ($)	Sep. 30, 2023 USD ($) batteryStorageAgreement MW	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) MW	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Nov. 18, 2022 lease	Apr. 02, 2021 lease	Jan. 15, 2016 lease	Jan. 15, 2015 lease
Operating Leased Assets [Line Items]
Proceeds from sale of productive assets					$ 32,654	$ 0
Reduction to inventories					16,657	6,630
Operating lease, payments to lessor upon occurrence of certain events			$ 13,500		13,500
Unamortized cost, right-of-way lease payments			56,700		56,700		$ 54,600
Operating lease, right-of-use asset, amortization expense			800	$ 900	2,600	2,900
Operating lease, right-of-use asset			185,989		185,989		55,982
Lessee, operating lease, unguaranteed residual value			25,900		25,900
Lease to be executed, fixed consideration			$ 961,000		$ 961,000
Lease to be executed, term of contract			20 years		20 years
Materials, Supplies, and Fuel Stock
Operating Leased Assets [Line Items]
Reduction to inventories					$ (5,300)
PNM
Operating Leased Assets [Line Items]
Number of leases under which lease term was extended | lease								5	5
Proceeds from sale of productive assets					32,654	0
Reduction to inventories					12,300	3,809
Operating lease, right-of-use asset			$ 183,889		183,889		52,556
Lessee, operating lease, unguaranteed residual value			13,200		13,200
PNM | Palo Verde Nuclear Generating Station, Unit 1 and 4 Leases
Operating Leased Assets [Line Items]
Number of leases, expiring | lease											4
Number of leases under which lease term was extended | lease											4
PNM | Palo Verde Nuclear Generating Station, Unit 2 Leases
Operating Leased Assets [Line Items]
Number of leases, expiring | lease										4
Number of leases under which lease term was extended | lease										1
Annual lease payments during renewal period					1,600
PNM | Navajo Nation
Operating Leased Assets [Line Items]
Annual lease payments					6,000
Right-of-way lease payments	$ 8,300
TNMP
Operating Leased Assets [Line Items]
Reduction to inventories					4,357	$ 2,821
Operating lease, right-of-use asset			2,099		2,099		$ 3,426
Lessee, operating lease, unguaranteed residual value			12,700		12,700
Equipment
Operating Leased Assets [Line Items]
Operating lease, residual value of leased asset			1,900		1,900
Equipment | PNM
Operating Leased Assets [Line Items]
Operating lease, residual value of leased asset			900		900
Equipment | TNMP
Operating Leased Assets [Line Items]
Operating lease, residual value of leased asset			$ 1,000		1,000
PNM Owned Assets
Operating Leased Assets [Line Items]
Proceeds from sale of productive assets		$ 33,700
Net Utility Plant
Operating Leased Assets [Line Items]
Proceeds from sale of productive assets					$ 28,400
Other
Operating Leased Assets [Line Items]
Number of battery storage agreements | batteryStorageAgreement			2
Operating lease, term of contract			20 years		20 years
Operating lease, right-of-use asset			$ 138,700		$ 138,700
Other | PNM
Operating Leased Assets [Line Items]
Number of megawatts in battery storage facilities (in megawatts) | MW			170		170

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Lease Commitments - Operating Lease Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Operating leases:
Operating lease assets, net of amortization	$ 185,989	$ 55,982
Current portion of operating lease liabilities	11,983	18,781
Long-term portion of operating lease liabilities	168,849	41,336
PNM
Operating leases:
Operating lease assets, net of amortization	183,889	52,556
Current portion of operating lease liabilities	10,992	17,239
Long-term portion of operating lease liabilities	167,891	39,633
TNMP
Operating leases:
Operating lease assets, net of amortization	2,099	3,426
Current portion of operating lease liabilities	991	1,543
Long-term portion of operating lease liabilities	$ 959	$ 1,703

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Lease Commitments - Finance Lease Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing leases:
Non-utility property	$ 48,143	$ 39,738
Accumulated depreciation	(21,851)	(16,189)
Non-utility property, net	26,292	23,549
Other current liabilities	8,813	7,363
Other deferred credits	17,486	16,123
PNM
Financing leases:
Non-utility property	25,144	19,324
Accumulated depreciation	(10,905)	(7,726)
Non-utility property, net	14,239	11,598
Other current liabilities	4,339	3,441
Other deferred credits	9,888	8,079
TNMP
Financing leases:
Non-utility property	22,931	20,084
Accumulated depreciation	(10,898)	(8,202)
Non-utility property, net	12,033	11,882
Other current liabilities	4,459	3,867
Other deferred credits	$ 7,593	$ 8,028

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Lease Commitments - Schedule of Weighted Average Remaining Lease Terms and Discount Rates (Details)	Sep. 30, 2023
Weighted average remaining lease term (years):
Operating leases	16 years 11 months 1 day
Financing leases	3 years 6 months 10 days
Weighted average discount rate:
Operating leases	5.60%
Financing leases	4.34%
PNM
Weighted average remaining lease term (years):
Operating leases	17 years 29 days
Financing leases	3 years 10 months 28 days
Weighted average discount rate:
Operating leases	5.61%
Financing leases	4.43%
TNMP
Weighted average remaining lease term (years):
Operating leases	1 year 10 months 2 days
Financing leases	3 years 29 days
Weighted average discount rate:
Operating leases	4.15%
Financing leases	4.24%

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Lease Commitments - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Lease, Cost [Line Items]
Operating lease cost:	$ 4,346	$ 7,205	$ 11,552	$ 21,623
Amounts capitalized	(373)	(577)	(1,365)	(1,860)
Total operating lease expense	3,973	6,628	10,187	19,763
Financing lease cost:
Amortization of right-of-use assets	2,389	1,585	6,718	4,680
Interest on lease liabilities	274	170	760	471
Amounts capitalized	(1,915)	(1,417)	(5,389)	(3,957)
Total financing lease expense	748	338	2,089	1,194
Variable lease expense	360	262	982	629
Short-term lease expense	190	567	490	2,884
Total lease expense for the period	5,271	7,795	13,748	24,470
Cooling Towers
Financing lease cost:
Short-term lease expense		400		2,700
Increase reimbursements		400		2,700
PNM
Lease, Cost [Line Items]
Operating lease cost:	4,001	6,736	10,377	20,085
Amounts capitalized	(71)	(166)	(334)	(524)
Total operating lease expense	3,930	6,570	10,043	19,561
Financing lease cost:
Amortization of right-of-use assets	1,193	792	3,325	2,293
Interest on lease liabilities	148	84	411	231
Amounts capitalized	(844)	(588)	(2,313)	(1,648)
Total financing lease expense	497	288	1,423	876
Variable lease expense	360	262	982	629
Short-term lease expense	174	568	438	2,837
Total lease expense for the period	4,961	7,688	12,886	23,903
TNMP
Lease, Cost [Line Items]
Operating lease cost:	345	466	1,175	1,489
Amounts capitalized	(302)	(410)	(1,031)	(1,336)
Total operating lease expense	43	56	144	153
Financing lease cost:
Amortization of right-of-use assets	1,183	779	3,345	2,334
Interest on lease liabilities	126	85	349	238
Amounts capitalized	(1,071)	(829)	(3,076)	(2,309)
Total financing lease expense	238	35	618	263
Variable lease expense	0	0	0	0
Short-term lease expense	7	1	22	4
Total lease expense for the period	$ 288	$ 92	$ 784	$ 420

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Lease Commitments - Schedule of Supplemental Cash Flows Related to Leases (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 18,827	$ 25,670
Operating cash flows from financing leases	183	101
Finance cash flows from financing leases	1,836	1,249
Non-cash information related to right-of-use assets obtained in exchange for lease obligations:
Operating leases	138,884	2,924
Financing leases	9,485	5,381
PNM
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	18,714	25,503
Operating cash flows from financing leases	135	67
Finance cash flows from financing leases	1,221	810
Non-cash information related to right-of-use assets obtained in exchange for lease obligations:
Operating leases	138,878	2,924
Financing leases	5,977	3,032
TNMP
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	113	118
Operating cash flows from financing leases	47	32
Finance cash flows from financing leases	565	371
Non-cash information related to right-of-use assets obtained in exchange for lease obligations:
Operating leases	6	0
Financing leases	$ 3,508	$ 2,349

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Lease Commitments - Schedule of Future Expected Lease Payments (Details) $ in Thousands	Sep. 30, 2023 USD ($)
Financing
Remainder of 2023	$ 2,646
2024	9,088
2025	7,004
2026	5,309
2027	2,798
Later years	1,605
Total minimum lease payments	28,450
Less: Imputed interest	2,151
Lease liabilities	26,299
Battery Storage
Battery Storage
Remainder of 2023	409
2024	9,099
2025	8,203
2026	7,100
2027	7,028
Later years	17,619
Total minimum lease payments	49,458
Less: Imputed interest	6,842
Lease liabilities	42,616
Other
Battery Storage
Remainder of 2023	2,947
2024	11,786
2025	11,786
2026	11,786
2027	11,786
Later years	184,041
Total minimum lease payments	234,132
Less: Imputed interest	95,916
Lease liabilities	138,216
PNM
Financing
Remainder of 2023	1,344
2024	4,510
2025	3,522
2026	3,010
2027	1,788
Later years	1,386
Total minimum lease payments	15,560
Less: Imputed interest	1,333
Lease liabilities	14,227
PNM | Battery Storage
Battery Storage
Remainder of 2023	145
2024	8,154
2025	7,433
2026	7,024
2027	7,028
Later years	17,619
Total minimum lease payments	47,403
Less: Imputed interest	6,736
Lease liabilities	40,667
PNM | Other
Battery Storage
Remainder of 2023	2,947
2024	11,786
2025	11,786
2026	11,786
2027	11,786
Later years	184,041
Total minimum lease payments	234,132
Less: Imputed interest	95,916
Lease liabilities	138,216
TNMP
Financing
Remainder of 2023	1,298
2024	4,564
2025	3,480
2026	2,299
2027	1,010
Later years	219
Total minimum lease payments	12,870
Less: Imputed interest	818
Lease liabilities	12,052
Battery Storage
Remainder of 2023	264
2024	945
2025	770
2026	76
2027	0
Later years	0
Total minimum lease payments	2,055
Less: Imputed interest	105
Lease liabilities	$ 1,950

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Income Taxes (Details) - USD ($) $ in Millions		9 Months Ended	12 Months Ended
	Aug. 18, 2023	Sep. 30, 2023	Dec. 31, 2017
Income Tax Contingency [Line Items]
Effective tax rate		16.05%
Income tax assessment		$ 0.3
Deferred federal, state and local, income taxes		22.9
PNM
Income Tax Contingency [Line Items]
Proposed rate credits	$ 115.0	$ 115.0
Effective tax rate		18.90%
Income tax assessment		$ 0.2
Deferred federal, state and local, income taxes		$ 14.3
TNMP
Income Tax Contingency [Line Items]
Effective tax rate		15.07%
Income tax assessment		$ 0.1
Deferred federal, state and local, income taxes		$ 8.6
NMPRC
Income Tax Contingency [Line Items]
Period of time for proposed return to customers the benefit of the reduction in federal corporate income tax rate			23 years

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Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
PNMR Development
Related Party Transaction [Line Items]
Ownership	50.00%		50.00%
Services billings: | PNMR to PNM
Related Party Transaction [Line Items]
Amount of related party transaction	$ 29,509	$ 26,281	$ 90,151	$ 82,352
Services billings: | PNMR to TNMP
Related Party Transaction [Line Items]
Amount of related party transaction	10,976	9,554	34,703	30,110
Services billings: | PNM to TNMP
Related Party Transaction [Line Items]
Amount of related party transaction	100	107	269	322
Services billings: | TNMP to PNMR
Related Party Transaction [Line Items]
Amount of related party transaction	35	35	106	106
Services billings: | PNMR to NMRD
Related Party Transaction [Line Items]
Amount of related party transaction	71	81	235	226
Renewable energy purchases: | PNM from NMRD
Related Party Transaction [Line Items]
Amount of related party transaction	3,652	3,221	9,761	9,642
Interconnection and facility study billings: | PNM from NMRD
Related Party Transaction [Line Items]
Amount of related party transaction	0	0	0	0
Interconnection and facility study billings: | PNM to PNMR
Related Party Transaction [Line Items]
Amount of related party transaction	0	0	0	0
Interconnection and facility study billings: | NMRD to PNM
Related Party Transaction [Line Items]
Amount of related party transaction	0	0	0	0
Interest billings: | PNMR to PNM
Related Party Transaction [Line Items]
Amount of related party transaction	8	4	18	13
Interest billings: | PNMR to TNMP
Related Party Transaction [Line Items]
Amount of related party transaction	117	50	128	166
Interest billings: | PNM to PNMR
Related Party Transaction [Line Items]
Amount of related party transaction	153	73	426	143
Income tax sharing payments: | PNMR to PNM
Related Party Transaction [Line Items]
Amount of related party transaction	0	0	0	0
Income tax sharing payments: | TNMP to PNMR
Related Party Transaction [Line Items]
Amount of related party transaction	$ 0	$ 0	$ 0	$ 0

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Equity Method Investment - Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($) MW
NMRD
Business Acquisition [Line Items]
Renewable energy capacity in operating (in mw) | MW	185
PNMR Development | NMRD
Business Acquisition [Line Items]
Contribution to construction activities | $	$ 25.8
PNMR Development | NMRD
Business Acquisition [Line Items]
Ownership	50.00%
AEP OnSite Partners | NMRD
Business Acquisition [Line Items]
Ownership	50.00%

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Equity Method Investment - Summarized Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Results of Operations
Operating revenues	$ 505,851	$ 729,888	$ 1,527,084	$ 1,673,736
Financial Position
Net property, plant, and equipment	717,353		717,353		$ 372,988
Assets	10,050,841	9,028,890	10,050,841	9,028,890	9,257,377
Total PNM common stockholder’s equity	2,235,211		2,235,211		2,191,932
NMRD
Results of Operations
Operating revenues	4,020	3,407	10,525	10,224
Operating expenses	1,743	2,381	6,127	7,172
Net Earnings Attributable to PNM	2,277	$ 1,026	4,398	$ 3,052
Financial Position
Current assets	9,529		9,529		8,357
Net property, plant, and equipment	229,659		229,659		169,440
Non-current assets	2,480		2,480		9,631
Assets	241,668		241,668		187,428
Current liabilities	4,176		4,176		5,822
Non-current liabilities	355		355		366
Total PNM common stockholder’s equity	$ 237,137		$ 237,137		$ 181,240

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Goodwill (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Apr. 01, 2020	Apr. 01, 2018
Goodwill [Line Items]
Goodwill	$ 278,297	$ 278,297	$ 278,297
Goodwill fair value exceeded by its carrying value					19.00%
PNM
Goodwill [Line Items]
Goodwill	51,632	51,632			$ 51,600
TNMP
Goodwill [Line Items]
Goodwill	$ 226,665	$ 226,665		$ 226,700
Goodwill fair value exceeded by its carrying value				38.00%

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Merger (Details) - USD ($) $ / shares in Units, $ in Millions	Jun. 19, 2023	Apr. 20, 2023	Dec. 31, 2023
Business Acquisition [Line Items]
Merger agreement period extension	3 months
Merger Agreement
Business Acquisition [Line Items]
Termination fees		$ 130.0
Out-of-pocket fees and expenses reimbursement		10.0
Merger Agreement | Forecast
Business Acquisition [Line Items]
Business combination, cash right per common share (in dollars per share)			$ 50.30
Merger Agreement | Avangrid
Business Acquisition [Line Items]
Termination fees		$ 184.0