10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

_________________________________ 

Form 10-Q

(Mark One)

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

For the quarterly period ended March 31, 2017

OR

o	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the transition period from _______ to _______

Commission file number: 001-14206

El Paso Electric Company

(Exact name of registrant as specified in its charter)

Texas	74-0607870
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
Stanton Tower, 100 North Stanton, El Paso, Texas	79901
(Address of principal executive offices)	(Zip Code)

(915) 543-5711

(Registrant’s telephone number, including area code)

Indicate by check mark whether the 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.    YES  x    NO  o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    YES  x    NO  o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a 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	x	Accelerated filer	o
Non-accelerated filer	o	Smaller reporting company	o
		Emerging growth company	o

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. o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    YES  o    NO  x

As of April 30, 2017, there were 40,557,782 shares of the Company’s no par value common stock outstanding.

EL PASO ELECTRIC COMPANY

INDEX TO FORM 10-Q

		Page No.
PART I. FINANCIAL INFORMATION
Item 1.	Financial Statements
	Balance Sheets – March 31, 2017 and December 31, 2016	1
	Statements of Operations – Three Months and Twelve Months Ended March 31, 2017 and 2016	3
	Statements of Comprehensive Operations – Three Months and Twelve Months Ended March 31, 2017 and 2016	4
	Statements of Cash Flows – Three Months Ended March 31, 2017 and 2016	5
	Notes to Financial Statements	6
	Report of Independent Registered Public Accounting Firm	24
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	25
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	38
Item 4.	Controls and Procedures	38
PART II. OTHER INFORMATION
Item 1.	Legal Proceedings	39
Item 1A.	Risk Factors	39
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	39
Item 5.	Other Information	39
Item 6.	Exhibits	39

( i)

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

EL PASO ELECTRIC COMPANY

BALANCE SHEETS

	March 31, 2017			December 31, 2016
	(Unaudited)
ASSETS (In thousands)
Utility plant:
Electric plant in service	$	3,838,875		$	3,791,566
Less accumulated depreciation and amortization	(1,267,633		)	(1,244,332		)
Net plant in service	2,571,242			2,547,234
Construction work in progress	159,326			154,738
Nuclear fuel; includes fuel in process of $68,908 and $57,315, respectively	206,391			194,842
Less accumulated amortization	(86,081		)	(75,602		)
Net nuclear fuel	120,310			119,240
Net utility plant	2,850,878			2,821,212
Current assets:
Cash and cash equivalents	5,166			8,420
Accounts receivable, principally trade, net of allowance for doubtful accounts of $1,716 and $2,156, respectively	84,845			88,452
Inventories, at cost	48,934			47,216
Under-collection of fuel revenues	2,519			11,123
Prepayments and other	10,445			8,988
Total current assets	151,909			164,199
Deferred charges and other assets:
Decommissioning trust funds	265,857			255,708
Regulatory assets	115,557			118,861
Other	16,463			16,298
Total deferred charges and other assets	397,877			390,867
Total assets	$	3,400,664		$	3,376,278

See accompanying notes to financial statements.

1

EL PASO ELECTRIC COMPANY

BALANCE SHEETS (Continued)

	March 31, 2017			December 31, 2016
	(Unaudited)
CAPITALIZATION AND LIABILITIES (In thousands except for share data)
Capitalization:
Common stock, stated value $1 per share, 100,000,000 shares authorized, 65,660,750 and 65,685,615 shares issued, and 169,430 and 137,017 restricted shares, respectively	$	65,830		$	65,823
Capital in excess of stated value	323,188			322,643
Retained earnings	1,098,189			1,114,561
Accumulated other comprehensive loss, net of tax	(3,184		)	(7,116		)
	1,484,023			1,495,911
Treasury stock, 25,271,652 and 25,304,914 shares, respectively, at cost	(420,961		)	(421,515		)
Common stock equity	1,063,062			1,074,396
Long-term debt, net of current portion	1,195,630			1,195,513
Total capitalization	2,258,692			2,269,909
Current liabilities:
Current maturities of long-term debt	83,206			83,143
Short-term borrowings under the revolving credit facility	134,178			81,574
Accounts payable, principally trade	45,812			62,953
Taxes accrued	26,944			32,488
Interest accrued	19,384			13,287
Over-collection of fuel revenues	181			255
Other	30,357			29,709
Total current liabilities	340,062			303,409
Deferred credits and other liabilities:
Accumulated deferred income taxes	548,491			555,066
Accrued pension liability	90,469			92,768
Accrued post-retirement benefit liability	35,083			34,400
Asset retirement obligation	86,882			81,800
Regulatory liabilities	20,113			18,435
Other	20,872			20,491
Total deferred credits and other liabilities	801,910			802,960
Commitments and contingencies
Total capitalization and liabilities	$	3,400,664		$	3,376,278

See accompanying notes to financial statements.

2

EL PASO ELECTRIC COMPANY

STATEMENTS OF OPERATIONS

(Unaudited)

(In thousands except for share data)

	Three Months Ended						Twelve Months Ended
	March 31,						March 31,
	2017			2016			2017			2016
Operating revenues	$	171,335		$	157,809		$	900,462		$	843,932
Energy expenses:
Fuel	36,606			34,319			176,025			184,990
Purchased and interchanged power	13,673			9,646			63,754			52,016
	50,279			43,965			239,779			237,006
Operating revenues net of energy expenses	121,056			113,844			660,683			606,926
Other operating expenses:
Other operations	56,123			58,387			239,750			245,738
Maintenance	20,990			17,515			70,221			67,178
Depreciation and amortization	21,934			23,293			82,958			91,552
Taxes other than income taxes	15,730			14,812			66,451			64,390
	114,777			114,007			459,380			468,858
Operating income (loss)	6,279			(163		)	201,303			138,068
Other income (deductions):
Allowance for equity funds used during construction	815			2,336			5,502			8,700
Investment and interest income, net	3,986			2,929			15,140			15,183
Miscellaneous non-operating income	85			656			721			2,538
Miscellaneous non-operating deductions	(740		)	(466		)	(3,973		)	(4,303		)
	4,146			5,455			17,390			22,118
Interest charges (credits):
Interest on long-term debt and revolving credit facility	18,367			16,599			73,312			65,967
Other interest	420			562			1,161			1,712
Capitalized interest	(1,294		)	(1,242		)	(5,042		)	(4,921		)
Allowance for borrowed funds used during construction	(791		)	(1,658		)	(4,116		)	(5,974		)
	16,702			14,261			65,315			56,784
Income (loss) before income taxes	(6,277		)	(8,969		)	153,378			103,402
Income tax expense (benefit)	(2,288		)	(3,161		)	54,791			30,750
Net income (loss)	$	(3,989	)	$	(5,808	)	$	98,587		$	72,652
Basic earnings (loss) per share	$	(0.10	)	$	(0.14	)	$	2.43		$	1.80
Diluted earnings (loss) per share	$	(0.10	)	$	(0.14	)	$	2.43		$	1.80
Dividends declared per share of common stock	$	0.31		$	0.295		$	1.24		$	1.18
Weighted average number of shares outstanding	40,387,235			40,325,324			40,366,024			40,295,316
Weighted average number of shares and dilutive potential shares outstanding	40,387,235			40,325,324			40,435,689			40,332,140

See accompanying notes to financial statements.

3

EL PASO ELECTRIC COMPANY

STATEMENTS OF COMPREHENSIVE OPERATIONS

(Unaudited)

(In thousands)

	Three Months Ended						Twelve Months Ended
	March 31,						March 31,
	2017			2016			2017			2016
Net income (loss)	$	(3,989	)	$	(5,808	)	$	98,587		$	72,652
Other comprehensive income (loss):
Unrecognized pension and post-retirement benefit costs:
Net gain (loss) arising during period	—			—			(20,053		)	5,429
Prior service benefit	—			—			32,697			824
Reclassification adjustments included in net income for amortization of:
Prior service benefit	(2,416		)	(1,666		)	(8,157		)	(6,577		)
Net loss	1,694			1,223			5,436			7,595
Net unrealized gains/losses on marketable securities:
Net holding gains (losses) arising during period	7,721			2,190			13,975			(1,730		)
Reclassification adjustments for net gains included in net income	(2,191		)	(1,388		)	(8,443		)	(8,757		)
Net losses on cash flow hedges:
Reclassification adjustment for interest expense included in net income	130			122			506			475
Total other comprehensive income (loss) before income taxes	4,938			481			15,961			(2,741		)
Income tax benefit (expense) related to items of other comprehensive income (loss):
Unrecognized pension and post-retirement benefit costs	193			56			(4,124		)	(2,899		)
Net unrealized (gains) losses on marketable securities	(1,121		)	(173		)	(1,054		)	2,099
Losses on cash flow hedges	(78		)	(82		)	(335		)	(213		)
Total income tax expense	(1,006		)	(199		)	(5,513		)	(1,013		)
Other comprehensive income (loss), net of tax	3,932			282			10,448			(3,754		)
Comprehensive income (loss)	$	(57	)	$	(5,526	)	$	109,035		$	68,898

See accompanying notes to financial statements.

4

EL PASO ELECTRIC COMPANY

STATEMENTS OF CASH FLOWS

(Unaudited)

(In thousands)

	Three Months Ended
	March 31,
	2017			2016
Cash flows from operating activities:
Net loss	$	(3,989	)	$	(5,808	)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization of electric plant in service	21,934			23,293
Amortization of nuclear fuel	11,278			11,800
Deferred income taxes, net	(3,209		)	(3,632		)
Allowance for equity funds used during construction	(815		)	(2,336		)
Other amortization and accretion	4,988			4,250
Gain on sale of property, plant and equipment	—			(545		)
Net gains on sale of decommissioning trust funds	(2,191		)	(1,388		)
Other operating activities	(165		)	124
Change in:
Accounts receivable	8,663			8,296
Inventories	(1,638		)	1,302
Net under/over-collection of fuel revenues	8,530			4,104
Prepayments and other	(2,494		)	(2,975		)
Accounts payable	(13,766		)	(21,827		)
Taxes accrued	(4,843		)	(5,127		)
Interest accrued	6,097			6,703
Other current liabilities	648			835
Deferred charges and credits	(2,896		)	(3,134		)
Net cash provided by operating activities	26,132			13,935
Cash flows from investing activities:
Cash additions to utility property, plant and equipment	(53,867		)	(52,675		)
Cash additions to nuclear fuel	(10,873		)	(11,220		)
Capitalized interest and AFUDC:
Utility property, plant and equipment	(1,606		)	(3,994		)
Nuclear fuel	(1,294		)	(1,242		)
Allowance for equity funds used during construction	815			2,336
Decommissioning trust funds:
Purchases, including funding of $1.1 million	(28,482		)	(26,544		)
Sales and maturities	26,055			24,078
Proceeds from sale of property, plant and equipment	—			596
Other investing activities	506			(750		)
Net cash used for investing activities	(68,746		)	(69,415		)
Cash flows from financing activities:
Dividends paid	(12,565		)	(11,928		)
Borrowings under the revolving credit facility:
Proceeds	128,339			97,655
Payments	(75,735		)	(152,343		)
Proceeds from issuance of senior notes	—			157,052
Other financing activities	(679		)	(1,793		)
Net cash provided by financing activities	39,360			88,643
Net increase (decrease) in cash and cash equivalents	(3,254		)	33,163
Cash and cash equivalents at beginning of period	8,420			8,149
Cash and cash equivalents at end of period	$	5,166		$	41,312

See accompanying notes to financial statements.

5

EL PASO ELECTRIC COMPANY

NOTES TO FINANCIAL STATEMENTS

(Unaudited)

A. Principles of Preparation

These condensed financial statements should be read in conjunction with the financial statements and notes thereto in the Annual Report of El Paso Electric Company on Form 10-K for the fiscal year ended December 31, 2016 (the "2016 Form 10-K"). Capitalized terms used in this report and not defined herein have the meaning ascribed to such terms in the 2016 Form 10-K. In the opinion of the Company’s management, the accompanying financial statements contain all adjustments necessary to present fairly the financial position of the Company at March 31, 2017 and December 31, 2016; the results of its operations and comprehensive operations for the three and twelve months endedMarch 31, 2017 and 2016; and its cash flows for the three months endedMarch 31, 2017 and 2016. The results of operations and comprehensive operations for the three months ended March 31, 2017 and the cash flows for the three months endedMarch 31, 2017 are not necessarily indicative of the results to be expected for the full calendar year.

Pursuant to the rules and regulations of the Securities and Exchange Commission (the "SEC"), certain financial information has been condensed and certain footnote disclosures have been omitted. Such information and disclosures are normally included in financial statements prepared in accordance with generally accepted accounting principles.

Use of Estimates. The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and 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. The Company evaluates its estimates on an on-going basis, including those related to depreciation, unbilled revenue, income taxes, fuel costs, pension and other post-retirement obligations and asset retirement obligations ("ARO"). Actual results could differ from those estimates.

Revenues. Revenues related to the sale of electricity are generally recorded when service is provided or electricity is delivered to customers. The billing of electricity sales to retail customers is based on the reading of their meters, which occurs on a systematic basis throughout the month. Unbilled revenues are recorded for estimated amounts of energy delivered in the period following the customer's billing cycle to the end of the month. Unbilled revenues are estimated based on monthly generation volumes and by applying an average revenue/kWh to the number of estimated kWhs delivered but not billed. Accounts receivable included accrued unbilled revenues of $17.4 million at March 31, 2017 and $21.0 million at December 31, 2016. The Company presents revenues net of sales taxes in its statements of operations.

Depreciation. The Company routinely evaluates the depreciable service lives, cost of removal and salvage values of its property, plant and equipment. Depreciation is provided on a straight-line basis over the estimated remaining lives of the assets (ranging in average from 5 to 48 years). When property subject to composite depreciation is retired or otherwise disposed of in the normal course of business, its cost, together with the cost of removal, less salvage, is charged to accumulated depreciation. For other property dispositions, the applicable cost and accumulated depreciation is removed from the balance sheet accounts and a gain or loss is recognized. During 2016, depreciation and amortization decreased due to changes in depreciation rates approved in the most recent final orders from the Public Utility Commission of Texas ("PUCT") and the New Mexico Public Regulation Commission ("NMPRC") and changes in the estimated life of certain intangible software assets.

New Accounting Standards

In March 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-09, Compensation - Stock Compensation (Topic 718) Improvements to Employee Share-Based Payment Accounting to simplify the accounting for share-based payment transactions, including the income tax consequences, classification of awards either as equity or liabilities, and classification on the statements of cash flows. The Company adopted the new standard effective January 1, 2017. The adoption of the new standard did not have a material impact on the Company’s financial condition, results of operations or cash flows. The cumulative effect of the adoption of the new standard was to increase net operating loss carryforward deferred tax assets and retained earnings by $0.2 million on January 1, 2017.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) to provide a framework that replaces the existing revenue recognition guidance, and has since modified the standard with several ASUs.The standard provides that an entity should recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. More specifically, the standard requires entities to recognize revenue through the application of a five-step model, which includes the: (i) identification of the contract; (ii) identification of the performance obligations; (iii) determination

6

EL PASO ELECTRIC COMPANY

NOTES TO FINANCIAL STATEMENTS

(Unaudited)

of the transaction price; (iv) allocation of the transaction price to the performance obligations; and (v) the recognition of revenue as the entity satisfies the performance obligations. The Company plans to adopt the new standard for reporting periods beginning after December 15, 2017. The Company has not concluded which transition method it will elect but it currently anticipates using the modified retrospective approach.

The Company is currently in the process of evaluating the impact of the new standard on its various revenue and cash flow streams, including the evaluation of the impact, if any, on changes to business processes, systems and controls to support recognition and disclosure under the new guidance. Tariff sales to customers are determined to be in the scope of the new standard and represent a significant portion of the Company’s total operating revenues. The Company has not completed its final evaluation of tariff sales under the new guidance. Further, the Company is still considering the impact of guidance on several industry-related accounting issues, including the accounting for contributions in aid of construction ("CIAC"), assessing the collectability criterion and the presentation of revenues associated with alternative revenue programs. The Company's initial assessments may change as it executes its implementation plan and new guidance is provided by the American Institute of Certified Public Accountants Power and Utilities Industry Task Force.

In January 2016, the FASB issued ASU 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Liabilities to enhance the reporting model for financial instruments by addressing certain aspects of recognition, measurement, presentation, and disclosure. ASU 2016-01 generally requires entities to measure equity investments that do not result in consolidation and are not accounted for under the equity method at fair value and recognize any changes in fair value in net income. The guidance for classifying and measuring investments in debt securities and loans is not changed by this ASU, but requires entities to record changes in other comprehensive income. Financial assets and financial liabilities must be separately presented by measurement category on the balance sheet or in the accompanying notes to the financial statements. ASU 2016-01 clarifies the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity's other deferred tax assets. The provisions of this ASU become effective for reporting periods beginning after December 15, 2017. Upon adoption of the new standard, the Company expects to record the cumulative effects as of January 1, 2018 which will result in an adjustment to accumulated other comprehensive income (losses) and retained earnings for unrealized gains (losses) related to equity securities owned by the Company. The Company is continuing to assess the future impact of this ASU.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and requiring qualitative and quantitative disclosures on leasing agreements. ASU 2016-02 maintains a distinction between finance leases and operating leases similar to the distinction under previous leases guidance for capital leases and operating leases. The impact of leases reported in the Company's operating results and statement of cash flows are expected to be similar to previous Generally Accepted Accounting Principles ("GAAP"). ASU 2016-02 requires the recognition in the statement of financial position, by the lessee, of a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. How leases are recorded in regard to financial position represents a significant change from previous GAAP guidance. The lessee is permitted to make an accounting policy election to not recognize lease assets and lease liabilities for short-term leases. Implementation of the standard will be required for reporting periods beginning after December 15, 2018. Adoption of the new lease accounting standard will require the Company to apply the new standard to the earliest period using a modified retrospective approach. The Company is currently in the process of evaluating the impact of the new standard, including the evaluation of the impact, if any, on changes to business processes, systems and controls to support recognition and disclosure under the new guidance, however, at this time is unable to determine the impact this standard will have on the financial statements and related disclosures.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326) ("ASU 2016-13"). ASU 2016-13 changes how companies measure and recognize credit impairment for many financial assets. The new current expected credit loss model will require companies to immediately recognize an estimate of credit losses expected to occur over the remaining life of the financial assets that are in the scope of the standard. The ASU also makes targeted amendments to the current impairment model for available-for-sale debt securities. The provisions of ASU 2016-13 will be required for reporting periods beginning after December 15, 2019. ASU 2016-13 will be applied in a modified-retrospective approach through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is implemented. The Company is currently assessing the future impact of ASU 2016-13.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230) Classification of Certain Cash Receipts and Cash Payments to reduce diversity in practice in how certain cash receipts and cash payments are classified in the statement of cash flows. The provisions of ASU 2016-15 will be required for reporting periods beginning after December 15, 2017. ASU 2016-15 will be applied using a retrospective transition method to each period presented. If it is impracticable to apply ASU

7

EL PASO ELECTRIC COMPANY

NOTES TO FINANCIAL STATEMENTS

(Unaudited)

2016-15 retrospectively for some of the issues, the amendments for those issues may be applied prospectively as of the earliest date practicable. The Company is currently assessing the future impact of this ASU.

In March 2017, the FASB issued ASU 2017-07, Compensation-Retirement Benefits (Topic 715) Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. ASU 2017-07 amends ASC 715, Compensation - Retirement Benefits, to require companies to present the service cost component of net benefit cost in the income statement line items where compensation cost is reported. Companies will present all other components of net benefit cost separately from the line item(s) that includes the service cost and outside of any subtotal of operating income. In addition, only the service cost component will be eligible for capitalization in assets. The amendments of ASU 2017-07 will be required for reporting periods beginning after December 15, 2017. The amendments in ASU 2017-07 should be applied retrospectively for the income statement presentation of the service cost component and the other components of net benefit costs and prospectively, on and after the effective date, for the capitalization of the service cost component. The Company is currently assessing the future impact of this ASU.

In March 2017, the FASB issued ASU 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20), Premium Amortization on Purchased Callable Debt Securities. ASU 2017-08 requires the premium on callable debt securities to be amortized to the earliest call date, contrary to current GAAP, which requires entities to amortize the premium over the contractual life of the instrument. The amendments of ASU 2017-08 do not require an accounting change for securities purchased at a discount; the discount continues to be amortized to maturity. The amendments of ASU 2017-08 will be required for reporting periods beginning after December 15, 2018. ASU 2017-08 will be applied on a modified-retrospective approach through a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. The Company is currently assessing the future impact of ASU 2017-08.

Supplemental Cash Flow Disclosures (in thousands)
		Three Months Ended
		March 31,
		2017			2016
Cash paid (received) for:
	Interest on long-term debt and borrowings under the revolving credit facility	$	11,721		$	10,666
	Income tax paid (refunded), net	(697		)	66
Non-cash investing and financing activities:
	Plant additions insurance reimbursement	5,056			—
	Changes in accrued plant additions	(3,335		)	(5,882		)
	Grants of restricted shares of common stock	540			653

8

EL PASO ELECTRIC COMPANY

NOTES TO FINANCIAL STATEMENTS

(Unaudited)

B. Accumulated Other Comprehensive Income (Loss)

Changes in Accumulated Other Comprehensive Income (Loss) (net of tax) by component are presented below (in thousands):
		Three Months Ended March 31, 2017												Three Months Ended March 31, 2016
		Unrecognized Pension and Post-retirement Benefit Costs			Net Unrealized Gains (Losses) on Marketable Securities			Net Losses on Cash Flow Hedges			Accumulated Other Comprehensive Income (Loss)			Unrecognized Pension and Post-retirement Benefit Costs			Net Unrealized Gains (Losses) on Marketable Securities			Net Losses on Cash Flow Hedges			Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period		$	(23,928	)	$	28,463		$	(11,651	)	$	(7,116	)	$	(29,869	)	$	27,765		$	(11,810	)	$	(13,914	)
	Other comprehensive income before reclassifications	—			6,165			—			6,165			—			1,742			—			1,742
	Amounts reclassified from accumulated other comprehensive income (loss)	(529		)	(1,756		)	52			(2,233		)	(387		)	(1,113		)	40			(1,460		)
Balance at end of period		$	(24,457	)	$	32,872		$	(11,599	)	$	(3,184	)	$	(30,256	)	$	28,394		$	(11,770	)	$	(13,632	)
		Twelve Months Ended March 31, 2017												Twelve Months Ended March 31, 2016
		Unrecognized Pension and Post-retirement Benefit Costs			Net Unrealized Gains (Losses) on Marketable Securities			Net Losses on Cash Flow Hedges			Accumulated Other Comprehensive Income (Loss)			Unrecognized Pension and Post-retirement Benefit Costs			Net Unrealized Gains (Losses) on Marketable Securities			Net Losses on Cash Flow Hedges			Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period		$	(30,256	)	$	28,394		$	(11,770	)	$	(13,632	)	$	(34,628	)	$	36,782		$	(12,032	)	$	(9,878	)
	Other comprehensive income (loss) before reclassifications	7,363			11,327			—			18,690			3,777			(1,335		)	—			2,442
	Amounts reclassified from accumulated other comprehensive income (loss)	(1,564		)	(6,849		)	171			(8,242		)	595			(7,053		)	262			(6,196		)
Balance at end of period		$	(24,457	)	$	32,872		$	(11,599	)	$	(3,184	)	$	(30,256	)	$	28,394		$	(11,770	)	$	(13,632	)

9

EL PASO ELECTRIC COMPANY

NOTES TO FINANCIAL STATEMENTS

(Unaudited)

Amounts reclassified from Accumulated Other Comprehensive Income (Loss) for the three and twelve months ended March 31, 2017 and 2016 are as follows (in thousands):

Details about Accumulated Other Comprehensive Income (Loss) Components		Three Months Ended March 31,						Twelve Months Ended March 31,						Affected Line Item in the Statement of Operations
		2017			2016			2017			2016
Amortization of pension and post-retirement benefit costs:
	Prior service benefit	$	2,416		$	1,666		$	8,157		$	6,577		(a)
	Net loss	(1,694		)	(1,223		)	(5,436		)	(7,595		)	(a)
		722			443			2,721			(1,018		)	(a)
	Income tax effect	(193		)	(56		)	(1,157		)	423			Income tax expense (benefit)
		529			387			1,564			(595		)	Net income (loss)
Marketable securities:
	Net realized gain on sale of securities	2,191			1,388			8,443			8,757			Investment and interest income, net
		2,191			1,388			8,443			8,757			Income before income taxes
	Income tax effect	(435		)	(275		)	(1,594		)	(1,704		)	Income tax expense (benefit)
		1,756			1,113			6,849			7,053			Net income
Loss on cash flow hedge:
	Amortization of loss	(130		)	(122		)	(506		)	(475		)	Interest on long-term debt and revolving credit facility
		(130		)	(122		)	(506		)	(475		)	Income (loss) before income taxes
	Income tax effect	78			82			335			213			Income tax expense
		(52		)	(40		)	(171		)	(262		)	Net income (loss)
	Total reclassifications	$	2,233		$	1,460		$	8,242		$	6,196

(a) These items are included in the computation of net periodic benefit cost. See Note I, Employee Benefits, for additional information.

10

EL PASO ELECTRIC COMPANY

NOTES TO FINANCIAL STATEMENTS

(Unaudited)

C. Regulation

General

The rates and services of the Company are regulated by incorporated municipalities in Texas, the PUCT, the NMPRC, and the Federal Energy Regulatory Commission ("FERC"). Municipal orders, ordinances and other agreements regarding rates and services adopted by Texas municipalities are subject to review and approval by the PUCT. The FERC has jurisdiction over the Company's wholesale (sales for resale) transactions, transmission service and compliance with federally-mandated reliability standards. The decisions of the PUCT, the NMPRC and the FERC are subject to judicial review.

Texas Regulatory Matters

2015 Texas Retail Rate Case Filing. On August 10, 2015, the Company filed with the City of El Paso, other municipalities incorporated in its Texas service territory, and the PUCT in Docket No. 44941, a request for an annual increase in non-fuel base revenues (the "2015 Texas Retail Rate Case").

On July 21, 2016, the parties to PUCT Docket No. 44941 filed the Joint Motion to Implement Uncontested Amended and Restated Stipulation and Agreement which was unopposed by the parties (the "Unopposed Settlement"). On August 25, 2016, the PUCT approved the Unopposed Settlement and issued its final order in Docket No. 44941 (the "PUCT Final Order"), as proposed. The PUCT Final Order provided for: (i) an annual non-fuel base rate increase, lower annual depreciation expense, a revised return on equity for allowance for funds used during construction ("AFUDC") purposes, and the inclusion of substantially all new plant in service in rate base; (ii) an additional annual non-fuel base rate increase of $3.7 million related to Four Corners Generating Station ("Four Corners") costs, which will be collected through a surcharge terminating on July 12, 2017; (iii) removing the separate rate treatment for residential customers with solar systems that the Company had proposed in its August 10, 2015 filing; (iv) allowing the Company to recover $3.1 million in rate case expenses through a separate surcharge and (v) allowing the Company to recover revenues associated with the relate back of rates to consumption on and after January 12, 2016 through March 31, 2016 through a separate surcharge.

Interim rates associated with the annual non-fuel base rate increase, became effective on April 1, 2016. The additional surcharges associated with the incremental Four Corners costs, rate case expenses and the relate back of rates to consumption on and after January 12, 2016 through March 31, 2016 were implemented on October 1, 2016.

For financial reporting purposes, the Company deferred any recognition of the Company's request in its 2015 Texas Retail Rate Case until it received the PUCT Final Order on August 25, 2016. Accordingly, it reported in the third quarter of 2016 the cumulative effect of the PUCT Final Order which related back to January 12, 2016.

2017 Texas Retail Rate Case Filing.On February 13, 2017, the Company filed with the City of El Paso, other municipalities incorporated in the Company's Texas service territory and the PUCT in Docket No. 46831, a request for an increase in non-fuel base revenues of approximately $42.5 million. The Company invoked its statutory right to have its new rates relate back for consumption on and after July 18, 2017, which is the 155th day after the filing. The difference in rates that would have been billed will be surcharged or refunded to customers after the PUCT's final order in Docket No. 46831. The PUCT has the authority to require the Company to surcharge or refund such difference over a period not to exceed 18 months. A procedural schedule has been adopted with a hearing scheduled in late August or early September 2017. The Company cannot predict the outcome or the timing of this rate case at this time.

Energy Efficiency Cost Recovery Factor. On May 1, 2017, the Company filed its annual application to establish its energy efficiency cost recovery factor for 2018. In addition to projected energy efficiency costs for 2018 and a true-up to prior year actual costs, the Company requested approval of a $1.0 million bonus for the 2016 energy efficiency program results in accordance with PUCT rules. The Company cannot predict the outcome or the timing of this matter at this time.

Fuel and Purchased Power Costs. On November 30, 2016, the Company filed a request, which was assigned PUCT Docket No. 46610, to increase its fixed fuel factor by approximately 28.8% to reflect increased fuel expenses primarily related to an increase in the price of natural gas used to generate power. The increase in the fixed fuel factor was effective on an interim basis January 1, 2017 and approved by the PUCT on January 10, 2017. As of March 31, 2017, the Company had under-recovered fuel costs in the amount of $2.5 million for the Texas jurisdiction.

Fuel Reconciliation Proceeding. On September 27, 2016, the Company filed an application with the PUCT, designated as PUCT Docket No. 46308, to reconcile $436.6 million of Texas fuel and purchased power expenses incurred during the period of

11

EL PASO ELECTRIC COMPANY

NOTES TO FINANCIAL STATEMENTS

(Unaudited)

April 1, 2013 through March 31, 2016. On March 31, 2017, the Company requested that the hearing set for April 5, 2017 be postponed until sometime after April 26, 2017 to allow for settlement discussions. The Company and parties to the proceeding have discussed terms of a settlement in principle to resolve the issues in the case, and the Company is currently drafting a stipulation and proposed order for filing with the State Office of Administrative Hearings. The Company expects the PUCT to consider the proposed settlement in the second quarter of 2017. The Company cannot predict the outcome or the timing of this matter. As of March 31, 2017, Texas jurisdictional fuel and purchased power costs subject to a future Texas fuel reconciliation are approximately $140.4 million.

Community Solar. On June 8, 2015, the Company filed a petition with the PUCT to initiate a community solar program that includes the construction and ownership of a 3 MW solar photovoltaic system located at Montana Power Station. Participation will be on a voluntary basis, and customers will contract for a set capacity (kW) amount and receive all energy produced. This case was assigned PUCT Docket No. 44800. The Company filed a settlement agreement among all parties on July 1, 2016 approving the program, and the PUCT approved the settlement agreement and program on September 1, 2016. The Community Solar facility is currently under construction and the Company expects completion of the solar facility and commencement of the program in the second quarter of 2017. On April 19, 2017, the Company announced that the entire 3 MW program was fully subscribed by approximately 1,500 Texas customers.

Four Corners Generating Station. On February 17, 2015, the Company and Arizona Public Service Company ("APS") entered into an asset purchase agreement (the "Purchase and Sale Agreement") providing for the sale of the Company's interest in Four Corners to APS. The sale of the Company's interest in Four Corners closed on July 6, 2016.

On June 10, 2015, the Company filed an application in Texas requesting reasonableness and public interest findings and certain rate and accounting findings related to the Purchase and Sale Agreement. This case was assigned PUCT Docket No. 44805. Subsequent to the filing of the application, the case has been subject to numerous procedural matters, including a March 23, 2016 order in which the PUCT determined not to dismiss the reasonableness and public interest issues in this docket but to consider the requested rate and accounting findings, including coal mine reclamation costs, in a rate case proceeding. On September 1, 2016, a motion by parties in the proceeding to suspend the procedural schedule in order to pursue settlement was approved. On March 3, 2017, the Company filed a Joint Motion to Implement Stipulation and Agreement, and commission Staff filed its recommendation that the Company’s disposition of its interest in Four Corners was reasonable and consistent with the public interest. A final order approving the Stipulation and Agreement was adopted by the PUCT on March 30, 2017.

At March 31, 2017, the regulatory asset associated with the Four Corners coal mine reclamation costs for the Company's Texas jurisdiction was approximately $7.1 million. Until otherwise determined, the Company will continue to recover its coal mine reclamation costs in Texas under previous orders and decisions of the PUCT. The Stipulation and Agreement also acknowledged an agreement among the parties related to the rate and accounting treatment of certain costs of Four Corners, including coal mine reclamation costs. Pursuant to the PUCT's order in PUCT Docket No. 44805, recovery of these costs will be addressed in future base rate and fuel-related proceedings. If the PUCT makes a determination that results in changes to how existing regulatory assets or previously incurred costs for Four Corners are recovered in rates, any such changes will be recognized for financial reporting purposes only when it becomes probable future cash flows will change as a result of such regulatory actions.

Other Required Approvals. The Company has obtained other required approvals for tariffs and approvals required by the Public Utility Regulatory Act (the "PURA") and the PUCT.

New Mexico Regulatory Matters

2015 New Mexico Rate Case Filing. On May 11, 2015, the Company filed a request with the NMPRC, in Case No. 15-00127-UT, for an annual increase in non-fuel base rates. On June 8, 2016, the NMPRC issued its final order in Case No. 15-00127-UT (the "NMPRC Final Order"), which approved an annual increase in non-fuel base rates of approximately $0.6 million, an increase of approximately $0.5 million in other service fees and a decrease in the Company's allowed return on equity to 9.48%. The NMPRC Final Order concluded that all of the Company's new plant in service was reasonable and necessary and therefore would be recoverable in rates. The Company's rates were approved by the NMPRC effective July 1, 2016 and implemented at such time.

2017 New Mexico Rate Case Filing. NMPRC Case No. 15-00109-UT required the Company to make a rate filing in New Mexico in the second quarter of 2017 using a historical test year ended December 31, 2016. On March 24, 2017, the Company, NMPRC Utility Division Staff and the New Mexico Attorney General filed a Joint Motion to Modify Filing Date Stated in Final Order requesting that the rate filing date be changed to no later than July 31, 2019, using the appropriate historical test year period. The joint request was approved by the NMPRC on April 12, 2017.

12

EL PASO ELECTRIC COMPANY

NOTES TO FINANCIAL STATEMENTS

(Unaudited)

Fuel and Purchased Power Costs. Historically, fuel and purchased power costs were recovered through base rates and a Fuel and Purchased Power Cost Adjustment Clause ("FPPCAC") that accounts for changes in the costs of fuel relative to the amount included in base rates. Effective July 1, 2016, with the implementation of the final order in Case No. 15-00127-UT, fuel and purchased power costs are no longer recovered through base rates but are recovered through the FPPCAC. The Company's request to reconcile its fuel and purchased power costs for the period January 1, 2013 through December 31, 2014 was approved in Case No. 15-00127-UT. New Mexico jurisdictional costs subject to prudence review are costs from January 1, 2015 through March 31, 2017 that total approximately $127.5 million. At March 31, 2017, the Company had a net fuel over-recovery balance of approximately $0.2 million in New Mexico.

5 MW Holloman Air Force Base ("HAFB") Facility CCN. On October 7, 2015, in NMPRC Case No. 15-00185-UT, the NMPRC issued a final order approving a CCN for a 5 MW solar power generation facility located on HAFB in the Company's service territory in New Mexico. The Company and HAFB negotiated a special retail contract, which includes power sales agreement for the facility, to replace the existing load retention agreement which was approved by final order issued October 5, 2016 in NMPRC Case No. 16-00224-UT. Construction of the solar generation facility is expected to be completed in the fourth quarter of 2017 or early 2018.

New Mexico Efficient Use of Energy Recovery Factor. On July 1, 2016, the Company filed its annual application requesting approval of its 2017 Energy Efficiency and Load Management Plan and to establish energy efficiency cost recovery factors for 2017. In addition to projected energy efficiency costs for 2017, the Company requested approval of a $0.4 million incentive for 2017 energy efficiency programs in accordance with NMPRC rules. This case was assigned Case No. 16-00185-UT. On February 22, 2017, the NMPRC issued a Final Order approving the Company’s 2017 Energy Efficiency and Load Management Plan and authorizing recovery in 2017 of a base incentive of $0.4 million. The Company’s energy efficiency cost recovery factors were approved and effective in customer bills beginning on March 1, 2017. In addition, on July 1, 2016, the Company filed its 2015 Annual Report for Energy Efficiency Programs, which included an incentive for verified 2015 program performance of $0.3 million, which was approved in Case No. 13-00176-UT. The Company recorded the $0.3 million approved incentive in operating revenues in the first quarter of 2017.

Other Required Approvals. The Company has obtained other required approvals for other tariffs, securities transactions, recovery of energy efficiency costs through a base rate rider and other approvals as required by the NMPRC.

Federal Regulatory Matters

The Company has obtained required approvals for rates and tariffs, securities transactions and other approvals as required by the FERC.

D. Palo Verde

Decommissioning. Pursuant to the ANPP Participation Agreement and federal law, the Company funds its share of the estimated costs to decommission Palo Verde Nuclear Generating Station ("Palo Verde") Units 1, 2 and 3, including the Common Facilities, through the term of their respective operating licenses and is required to maintain a minimum accumulation and funding level in its decommissioning account at the end of each annual reporting period during the life of the plant. The Company has established external trusts with an independent trustee, which enables the Company to record a current deduction for federal income tax purposes for most of the amounts funded. At March 31, 2017, the Company’s decommissioning trust fund had a balance of $265.9 million, which is above its minimum funding level. The Company monitors the status of its decommissioning funds and adjusts its deposits, if necessary.

Decommissioning costs are estimated every three years based upon engineering cost studies performed by outside engineers retained by APS. In April 2017, the Palo Verde Participants approved the 2016 Palo Verde decommissioning study (the “2016 Study”). The 2016 Study estimated that the Company must fund approximately $432.8 million (stated in 2016 dollars) to cover its share of decommissioning costs which was an increase in decommissioning costs of $52.1 million (stated in 2016 dollars) from the 2013 Palo Verde decommissioning study. The effect of this change increased the ARO by $3.1 million, which was recorded in the first quarter of 2017, and will increase annual expenses starting in April 2017. Although the 2016 Study was based on the latest available information, there can be no assurance that decommissioning cost estimates will not increase in the future or that regulatory requirements will not change. In addition, until a new low-level radioactive waste repository opens and operates for a number of years, estimates of the cost to dispose of low-level radioactive waste are subject to uncertainty. As provided in the ANPP Participation Agreement, the participants are required to conduct a new decommissioning study every three years. While the

13

EL PASO ELECTRIC COMPANY

NOTES TO FINANCIAL STATEMENTS

(Unaudited)

Company attempts to seek amounts in rates to meet its decommissioning obligations, it is not able to conclude given the evidence available to it now that it is probable these costs will continue to be collected over the period until decommissioning begins in 2044. The Company is ultimately responsible for these costs and its future actions combined with future decisions from regulators will determine how successful the Company is in this effort.

Spent Nuclear Fuel and Waste Disposal. Pursuant to the Nuclear Waste Policy Act of 1982, as amended in 1987 (the "NWPA"), the U.S. Department of Energy (the "DOE") is legally obligated to accept and dispose of all spent nuclear fuel and other high-level radioactive waste generated by all domestic power reactors by 1998. The DOE's obligations are reflected in a contract for Disposal of Spent Nuclear Fuel and/or High-Level Radioactive Waste (the "Standard Contract") with each nuclear power plant. The DOE failed to begin accepting spent nuclear fuel by 1998.

On October 31, 2014, APS, acting on behalf of itself and the Palo Verde Participants, submitted to the government a request for reimbursement of spent nuclear fuel storage costs for the period July 1, 2011 through June 30, 2014. The accepted claim amount was $42.0 million. On June 1, 2015, the Company received approximately $6.6 million, representing its share of the award, of which $5.8 million was credited to customers through the applicable fuel adjustment clauses in March 2015. After June 2015, APS will file annual claims for the period July 1 of the then-previous year to June 30 of the then-current year.

On November 2, 2015, APS filed a $12.0 million claim for the period July 1, 2014 through June 30, 2015. In February 2016, the DOE notified APS of the approval of the claim. In March 2016, the Company received its share of this claim of approximately $1.9 million, of which $1.6 million was credited to customers through the applicable fuel adjustment clauses.

On October 31, 2016, APS filed an $11.3 million claim for the period July 1, 2015 through June 30, 2016. On February 1, 2017, the DOE notified APS of the approval of the claim. On March 10, 2017, the Company received approximately $1.8 million, representing its share of the award, of which $1.4 million was credited to customers through the applicable fuel adjustment clauses.

Palo Verde Operations and Maintenance Expense. Included in other operations and maintenance expenses are expenses associated with Palo Verde as follows (in thousands):

	2017		2016
Three months ended March 31,	$	21,608	$	22,343
Twelve months ended March 31,	96,179		98,134

14

EL PASO ELECTRIC COMPANY

NOTES TO FINANCIAL STATEMENTS

(Unaudited)

E. Common Stock

Dividends. The Company paid $12.6 million and $11.9 million in quarterly cash dividends during the three months ended March 31, 2017 and 2016, respectively. The Company paid a total of $50.3 million and $47.7 million in quarterly cash dividends during the twelve months ended March 31, 2017 and 2016, respectively.

Basic and Diluted Earnings Per Share. The basic and diluted earnings per share are presented below (in thousands except for share data):
	Three Months Ended March 31,						Twelve Months Ended March 31,
	2017			2016			2017			2016
Weighted average number of common shares outstanding:
Basic number of common shares outstanding	40,387,235			40,325,324			40,366,024			40,295,316
Dilutive effect of unvested performance awards	—			—			69,665			36,824
Diluted number of common shares outstanding	40,387,235			40,325,324			40,435,689			40,332,140
Basic net income (loss) per common share:
Net income (loss)	$	(3,989	)	$	(5,808	)	$	98,587		$	72,652
Income allocated to participating restricted stock	(45		)	(32		)	(349		)	(209		)
Net income (loss) available to common shareholders	$	(4,034	)	$	(5,840	)	$	98,238		$	72,443
Diluted net income (loss) per common share:
Net income (loss)	$	(3,989	)	$	(5,808	)	$	98,587		$	72,652
Income reallocated to participating restricted stock	(45		)	(32		)	(349		)	(209		)
Net income (loss) available to common shareholders	$	(4,034	)	$	(5,840	)	$	98,238		$	72,443
Basic net income (loss) per common share:
Distributed earnings	$	0.31		$	0.295		$	1.24		$	1.18
Undistributed earnings (losses)	(0.41		)	(0.435		)	1.19			0.62
Basic net income (loss) per common share	$	(0.10	)	$	(0.140	)	$	2.43		$	1.80
Diluted net income (loss) per common share:
Distributed earnings	$	0.31		$	0.295		$	1.24		$	1.18
Undistributed earnings (losses)	(0.41		)	(0.435		)	1.19			0.62
Diluted net income (loss) per common share	$	(0.10	)	$	(0.140	)	$	2.43		$	1.80

The amount of restricted stock awards and performance shares at 100% performance level excluded from the calculation of the diluted number of common shares outstanding because their effect was antidilutive is presented below:
	Three Months Ended		Twelve Months Ended
	March 31,		March 31,
	2017	2016	2017	2016
Restricted stock awards	78,025	59,462	58,344	54,192
Performance shares (a)	—	62,995	47,246	49,183

(a) Certain performance shares were excluded from the computation of diluted earnings per share as no payouts would have been required based upon performance at the end of each corresponding period.

15

EL PASO ELECTRIC COMPANY

NOTES TO FINANCIAL STATEMENTS

(Unaudited)

F. Income Taxes

The Company files income tax returns in the United States ("U.S.") federal jurisdiction and in the states of Texas, New Mexico and Arizona. The Company is no longer subject to tax examination by the taxing authorities in the federal, Arizona and New Mexico jurisdictions for years prior to 2012. The Company is currently under audit in Texas for tax years 2007 through 2011.

For the three months ended March 31, 2017 and 2016, the Company’s effective tax rate was 36.5% and 35.2%, respectively. For the twelve months ended March 31, 2017 and 2016, the Company's effective tax rate was 35.7% and 29.7%, respectively. The Company's effective tax rate for all periods differs from the federal statutory tax rate of 35.0% primarily due to capital gains in the decommissioning trusts which are taxed at the federal rate of 20.0%, the allowance for equity funds used during construction ("AEFUDC"), state taxes and the issue discussed in the following paragraph.

In the third quarter of 2016, the Company changed its accounting for state income taxes from the flow-through method to the normalization method in accordance with the PUCT's and NMPRC's most recent final orders. Under the flow-through method, the Company previously recorded deferred state income taxes and regulatory liabilities and assets offsetting such deferred state income taxes at the expected cash flow to be reflected in future rates. Upon implementation of normalization, the Company began amortizing the net regulatory asset for deferred state income taxes to deferred income tax expense over a 15 year period as allowed by the regulators. In the third quarter of 2016, the Company began recording deferred state income tax expense as required by normalization, retroactive to January 2016 as provided in the final orders. The impact of the change was additional deferred income tax expense of $1.0 million and $5.1 million for the three and twelve months endedMarch 31, 2017, respectively.

16

EL PASO ELECTRIC COMPANY

NOTES TO FINANCIAL STATEMENTS

(Unaudited)

G. Commitments, Contingencies and Uncertainties

For a full discussion of commitments and contingencies, see Note K of the Notes to Financial Statements in the 2016 Form 10-K. In addition, see Notes C and D above and Notes C and E of the Notes to Financial Statements in the 2016 Form 10-K regarding matters related to wholesale power sales contracts and transmission contracts subject to regulation and Palo Verde, including decommissioning, spent nuclear fuel and waste disposal, and liability and insurance matters.

Power Purchase and Sale Contracts

To supplement its own generation and operating reserve requirements, and to meet required renewable portfolio standards, the Company engages in power purchase arrangements which may vary in duration and amount based on an evaluation of the Company's resource needs, the economics of the transactions, and specific renewable portfolio requirements. For a full discussion of power purchase and sale contracts that the Company has entered into with various counterparties, see Note K of the Notes to Financial Statements in the 2016 Form 10-K.

Environmental Matters

General. The Company is subject to extensive laws, regulations and permit requirements with respect to air and greenhouse gas ("GHG") emissions, water discharges, soil and water quality, waste management and disposal, natural resources and other environmental matters by federal, state, regional, tribal and local authorities. Failure to comply with such laws, regulations and requirements can result in actions by authorities or other third parties that might seek to impose on the Company administrative, civil and/or criminal penalties or other sanctions. In addition, releases of pollutants or contaminants into the environment can result in costly cleanup liabilities. These laws, regulations and requirements are subject to change through modification or reinterpretation, or the introduction of new laws and regulations and, as a result, the Company may face additional capital and operating costs to comply.

On March 28, 2017 the Company entered into a Compliance Agreement (the “Compliance Agreement”) with the Texas Commission on Environmental Quality under the Texas Environmental, Health and Safety Audit Privilege Act to address certain water and waste compliance issues associated with the integrity of the synthetic liner of the evaporation pond at the Company’s Newman Generating Station. The Company's action plan will be implemented over the three year period of the Compliance Agreement starting in the second quarter of 2017. The Company is currently evaluating the cost of performing its obligations under the Compliance Agreement.

H. Litigation

The Company is involved in various legal, environmental, tax and regulatory proceedings before various courts, regulatory commissions and governmental agencies regarding matters arising in the ordinary course of business. In many of these matters, the Company has excess casualty liability insurance that covers the various claims, actions and complaints. The Company regularly analyzes current information and, as necessary, makes provisions in its financial statements for probable liabilities for the eventual disposition of these matters. While the outcome of these matters cannot be predicted with certainty, based upon a review of the matters and applicable insurance coverage, the Company believes that none of these matters will have a material adverse effect on the financial position, results of operations or cash flows of the Company. The Company expenses legal costs, including expenses related to loss contingencies, as they are incurred.

See Notes C and G above and Notes C and K of the Notes to Financial Statements in the 2016 Form 10-K for discussion of the effects of government legislation and regulation on the Company.

17

EL PASO ELECTRIC COMPANY

NOTES TO FINANCIAL STATEMENTS

(Unaudited)

I. Employee Benefits

Retirement Plans

The net periodic benefit cost recognized for the three and twelve months endedMarch 31, 2017 and 2016 is made up of the components listed below as determined using the projected unit credit actuarial cost method (in thousands):

	Three Months Ended						Twelve Months Ended
	March 31,						March 31,
	2017			2016			2017			2016
Components of net periodic benefit cost:
Service cost	$	2,270		$	1,905		$	8,366		$	8,597
Interest cost	3,248			3,265			13,022			14,135
Expected return on plan assets	(4,808		)	(4,712		)	(18,975		)	(19,560		)
Amortization of:
Net loss	2,089			1,888			7,540			9,785
Prior service benefit	(878		)	(878		)	(3,506		)	(3,496		)
Net periodic benefit cost	$	1,921		$	1,468		$	6,447		$	9,461

During the three months endedMarch 31, 2017, the Company contributed $3.0 million of its projected $10.0 million2017 annual contribution to its retirement plans.

Other Postretirement Benefits

The net periodic benefit recognized for the three and twelve months endedMarch 31, 2017 and 2016 is made up of the components listed below (in thousands):

	Three Months Ended						Twelve Months Ended
	March 31,						March 31,
	2017			2016			2017			2016
Components of net periodic benefit:
Service cost	$	588		$	715		$	2,642		$	3,294
Interest cost	678			873			2,972			3,883
Expected return on plan assets	(470		)	(460		)	(1,845		)	(2,005		)
Amortization of:
Prior service benefit	(1,538		)	(788		)	(4,651		)	(3,081		)
Net gain	(395		)	(665		)	(2,104		)	(2,190		)
Net periodic benefit	$	(1,137	)	$	(325	)	$	(2,986	)	$	(99	)

During the three months endedMarch 31, 2017, the Company contributed $0.1 million of its projected $1.5 million2017 annual contribution to its other postretirement benefits plan.

4J. Financial Instruments and Investments

The FASB guidance requires the Company to disclose estimated fair values for its financial instruments. The Company has determined that cash and temporary investments, investment in debt securities, accounts receivable, decommissioning trust funds, long-term debt, short-term borrowings under the Revolving Credit Facility ("RCF"), accounts payable and customer deposits meet the definition of financial instruments. The carrying amounts of cash and temporary investments, accounts receivable, accounts payable and customer deposits approximate fair value because of the short maturity of these items. Investments in debt securities and decommissioning trust funds are carried at estimated fair value.

18

EL PASO ELECTRIC COMPANY

NOTES TO FINANCIAL STATEMENTS

(Unaudited)

Long-Term Debt and Short-Term Borrowings Under the RCF. The fair values of the Company's long-term debt and short-term borrowings under the RCF are based on estimated market prices for similar issues and are presented below (in thousands):

	March 31, 2017				December 31, 2016
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Pollution Control Bonds	$	190,844	$	204,599	$	190,775	$	206,818
Senior Notes	993,170		1,126,625		993,086		1,112,285
RGRT Senior Notes (1)	94,822		98,555		94,795		98,855
RCF (1)	134,178		134,178		81,574		81,574
Total	$	1,413,014	$	1,563,957	$	1,360,230	$	1,499,532

_______________

(1) Nuclear fuel financing, as of March 31, 2017 and December 31, 2016, is funded through the $95 million Rio Grande Resources Trust ("RGRT") Senior Notes and $40.2 million and $37.6 million, respectively under the RCF. As of March 31, 2017, $94.0 million was outstanding under the RCF for working capital or general corporate purposes. As of December 31, 2016, $44.0 million was outstanding under the RCF for working capital or general corporate purposes. The interest rate on the Company's borrowings under the RCF is reset throughout the quarter reflecting current market rates. Consequently, the carrying value approximates fair value.

Marketable Securities.The Company's marketable securities, included in decommissioning trust funds in the Balance Sheets, are reported at fair value which was $265.9 million and $255.7 million at March 31, 2017 and December 31, 2016, respectively. These securities are classified as available for sale and recorded at their estimated fair value using the FASB guidance for certain investments in debt and equity securities. The reported fair values include gross unrealized losses on marketable securities whose impairment the Company has deemed to be temporary. The tables below present the gross unrealized losses and the fair value of these securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (in thousands):

	March 31, 2017
	Less than 12 Months					12 Months or Longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Description of Securities (1):
Federal Agency Mortgage Backed Securities	$	11,142	$	(249	)	$	424	$	(23	)	$	11,566	$	(272	)
U.S. Government Bonds	32,621		(739		)	9,876		(570		)	42,497		(1,309		)
Municipal Obligations	9,152		(298		)	4,413		(385		)	13,565		(683		)
Corporate Obligations	9,665		(131		)	2,491		(208		)	12,156		(339		)
Total Debt Securities	62,580		(1,417		)	17,204		(1,186		)	79,784		(2,603		)
Common Stock	541		(53		)	—		—			541		(53		)
Total Temporarily Impaired Securities	$	63,121	$	(1,470	)	$	17,204	$	(1,186	)	$	80,325	$	(2,656	)

_________________

(1) Includes 139 securities.

19

EL PASO ELECTRIC COMPANY

NOTES TO FINANCIAL STATEMENTS

(Unaudited)

	December 31, 2016
	Less than 12 Months					12 Months or Longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Description of Securities (2):
Federal Agency Mortgage Backed Securities	$	11,582	$	(239	)	$	436	$	(22	)	$	12,018	$	(261	)
U.S. Government Bonds	31,655		(762		)	17,976		(835		)	49,631		(1,597		)
Municipal Obligations	9,596		(394		)	4,067		(372		)	13,663		(766		)
Corporate Obligations	7,971		(172		)	2,092		(172		)	10,063		(344		)
Total Debt Securities	60,804		(1,567		)	24,571		(1,401		)	85,375		(2,968		)
Common Stock	2,760		(167		)	—		—			2,760		(167		)
Institutional Equity Funds-International Equity	22,945		(110		)	—		—			22,945		(110		)
Total Temporarily Impaired Securities	$	86,509	$	(1,844	)	$	24,571	$	(1,401	)	$	111,080	$	(3,245	)

_________________

(2) Includes 152 securities.

The Company monitors the length of time specific securities trade below their cost basis along with the amount and percentage of the unrealized loss in determining if a decline in fair value of marketable securities below recorded cost is considered to be other than temporary. The Company recognizes impairment losses on certain of its securities deemed to be other than temporary. In accordance with the FASB guidance, these impairment losses are recognized in net income, and a lower cost basis is established for these securities. In addition, the Company will research the future prospects of individual securities as necessary. The Company does not anticipate expending monies held in trust before 2044 or a later period when decommissioning of Palo Verde begins.

For the three and twelve months ended March 31, 2017 and 2016, the Company recognized other than temporary impairment losses on its available-for-sale securities as follow (in thousands):

	Three Months Ended					Twelve Months Ended
	March 31,					March 31,
	2017		2016			2017			2016
Unrealized holding losses included in pre-tax income	$	—	$	(156	)	$	(196	)	$	(494	)

The reported securities also include gross unrealized gains on marketable securities which have not been recognized in the Company's net income. The table below presents the unrecognized gross unrealized gains and the fair value of these securities, aggregated by investment category (in thousands): 

	March 31, 2017				December 31, 2016
	Fair Value		Unrealized Gains		Fair Value		Unrealized Gains
Description of Securities:
Federal Agency Mortgage Backed Securities	$	6,991	$	276	$	7,430	$	319
U.S. Government Bonds	15,811		198		12,237		138
Municipal Obligations	4,086		144		2,481		144
Corporate Obligations	14,393		710		12,350		655
Total Debt Securities	41,281		1,328		34,498		1,256
Common Stock	62,487		34,868		61,884		34,066
Equity Mutual Funds	50,225		5,690		42,244		3,345
Institutional Funds - International Equity	24,737		1,722		—		—
Cash and Cash Equivalents	6,802		—		6,002		—
Total	$	185,532	$	43,608	$	144,628	$	38,667

20

EL PASO ELECTRIC COMPANY

NOTES TO FINANCIAL STATEMENTS

(Unaudited)

The Company's marketable securities include investments in mortgage backed securities, municipal, corporate and federal debt obligations. The contractual year for maturity of these available-for-sale securities as of March 31, 2017 is as follows (in thousands):

	Total		2017		2018 through 2021		2022 through 2026		2027 and Beyond
Municipal Debt Obligations	$	17,651	$	804	$	6,366	$	9,203	$	1,278
Corporate Debt Obligations	26,549		—		10,110		7,511		8,928
U.S. Government Bonds	58,308		5,928		27,123		14,834		10,423
Federal Agency Mortgage Backed Securities	18,557		—		6		356		18,195

The Company's marketable securities in its decommissioning trust funds are sold from time to time and the Company uses the specific identification basis to determine the amount to reclassify from accumulated other comprehensive income into net income. The proceeds from the sale of these securities during the three and twelve months ended March 31, 2017 and 2016 and the related effects on pre-tax income are as follows (in thousands):

	Three Months Ended						Twelve Months Ended
	March 31,						March 31,
	2017			2016			2017			2016
Proceeds from sales or maturities of available-for-sale securities	$	26,055		$	24,078		$	93,245		$	102,003
Gross realized gains included in pre-tax income	$	2,587		$	1,832		$	9,968		$	10,429
Gross realized losses included in pre-tax income	(396		)	(288		)	(1,329		)	(1,178		)
Gross unrealized losses included in pre-tax income	—			(156		)	(196		)	(494		)
Net gains included in pre-tax income	$	2,191		$	1,388		$	8,443		$	8,757
Net unrealized holding gains (losses) included in accumulated other comprehensive income	$	7,721		$	2,190		$	13,975		$	(1,730	)
Net gains reclassified from accumulated other comprehensive income	(2,191		)	(1,388		)	(8,443		)	(8,757		)
Net gains (losses) in other comprehensive income	$	5,530		$	802		$	5,532		$	(10,487	)

Fair Value Measurements. The FASB guidance requires the Company to provide expanded quantitative disclosures for financial assets and liabilities recorded on the balance sheet at fair value. Financial assets carried at fair value include the Company's decommissioning trust investments and investments in debt securities which are included in deferred charges and other assets on the Balance Sheets. The Company has no liabilities that are measured at fair value on a recurring basis. The FASB guidance establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three levels as follows:

• Level 1 – Observable inputs that reflect quoted market prices for identical assets and liabilities in active markets. Financial assets utilizing Level 1 inputs include the nuclear decommissioning trust investments in active exchange-traded equity securities, mutual funds and U.S. Treasury securities that are in a highly liquid and active market. The Institutional Funds are valued using the Net Asset Value ("NAV") provided by the administrator of the fund. The NAV price is quoted on a restrictive market although the underlying investments are traded on active markets. During the third quarter of 2016, the Company concluded that the NAV used for determining the fair value of the Institutional Funds- International Equity investments have readily determinable fair values. Accordingly, such fund values have been re-categorized from Level 2 to Level 1 hierarchy.

• Level 2 – Inputs other than quoted market prices included in Level 1 that are observable for the asset or liability either directly or indirectly. Financial assets utilizing Level 2 inputs include the nuclear decommissioning trust investments in

21

EL PASO ELECTRIC COMPANY

NOTES TO FINANCIAL STATEMENTS

(Unaudited)

fixed income securities. The fair value of these financial instruments is based on evaluated prices that reflect observable market information, such as actual trade information of similar securities, adjusted for observable differences.

• Level 3 – Unobservable inputs using data that is not corroborated by market data and primarily based on internal Company analysis using models and various other analysis. Financial assets utilizing Level 3 inputs are the Company's investment in debt securities.

The securities in the Company's decommissioning trust funds are valued using prices and other relevant information generated by market transactions involving identical or comparable securities. The FASB guidance identifies this valuation technique as the "market approach" with observable inputs. The Company analyzes available-for-sale securities to determine if losses are other than temporary.

The fair value of the Company's decommissioning trust funds and investments in debt securities at March 31, 2017 and December 31, 2016, and the level within the three levels of the fair value hierarchy defined by the FASB guidance are presented in the table below (in thousands):

Description of Securities	Fair Value as of March 31, 2017		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Trading Securities:
Investments in Debt Securities	$	1,628	$	—	$	—	$	1,628
Available for sale:
U.S. Government Bonds	$	58,308	$	58,308	$	—	$	—
Federal Agency Mortgage Backed Securities	18,557		—		18,557		—
Municipal Obligations	17,651		—		17,651		—
Corporate Obligations	26,549		—		26,549		—
Subtotal, Debt Securities	121,065		58,308		62,757		—
Common Stock	63,028		63,028		—		—
Equity Mutual Funds	50,225		50,225		—		—
Institutional Funds-International Equity	24,737		24,737		—		—
Cash and Cash Equivalents	6,802		6,802		—		—
Total Available for Sale	$	265,857	$	203,100	$	62,757	$	—

22

EL PASO ELECTRIC COMPANY

NOTES TO FINANCIAL STATEMENTS

(Unaudited)

Description of Securities	Fair Value as of December 31, 2016		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Trading Securities:
Investments in Debt Securities	$	1,421	$	—	$	—	$	1,421
Available for sale:
U.S. Government Bonds	$	61,868	$	61,868	$	—	$	—
Federal Agency Mortgage Backed Securities	19,448		—		19,448		—
Municipal Obligations	16,144		—		16,144		—
Corporate Obligations	22,413		—		22,413		—
Subtotal, Debt Securities	119,873		61,868		58,005		—
Common Stock	64,644		64,644		—		—
Equity Mutual Funds	42,244		42,244		—		—
Institutional Funds-International Equity	22,945		22,945		—		—
Cash and Cash Equivalents	6,002		6,002		—		—
Total Available for Sale	$	255,708	$	197,703	$	58,005	$	—

There were no transfers in or out of Level 1 and Level 2 fair value measurements categories due to changes in observable inputs during the three and twelve month periods ended March 31, 2017 and 2016. There were no purchases, sales, issuances, and settlements related to the assets in the Level 3 fair value measurement category during the three and twelve months endedMarch 31, 2017 and 2016.

23

Report of Independent Registered Public Accounting Firm

The Board of Directors and Shareholders

El Paso Electric Company:

We have reviewed the condensed balance sheet of El Paso Electric Company as of March 31, 2017, the related condensed statements of operations and comprehensive operations for the three-month and twelve-month periods endedMarch 31, 2017 and 2016, and the related condensed statements of cash flows for the three-month periods ended March 31, 2017 and 2016. These condensed financial statements are the responsibility of the Company's management.

We conducted our reviews in accordance with the standards of the Public Company Accounting Oversight Board (United States). A review of interim financial information consists principally of applying analytical procedures and making inquiries of persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with the standards of the Public Company Accounting Oversight Board (United States), the objective of which is the expression of an opinion regarding the financial statements taken as a whole. Accordingly, we do not express such an opinion.

Based on our reviews, we are not aware of any material modifications that should be made to the condensed financial statements referred to above for them to be in conformity with U.S. generally accepted accounting principles.

We have previously audited, in accordance with standards of the Public Company Accounting Oversight Board (United States), the balance sheet of El Paso Electric Company as of December 31, 2016, and the related statements of operations, comprehensive operations, changes in common stock equity, and cash flows for the year then ended (not presented herein); and in our report dated February 24, 2017, we expressed an unqualified opinion on those financial statements. In our opinion, the information set forth in the accompanying condensed balance sheet as of December 31, 2016, is fairly stated, in all material respects, in relation to the balance sheet from which it has been derived.

/s/ KPMG LLP

Houston, Texas

May 5, 2017

24

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The information contained in this Item 2 updates, and should be read in conjunction with, the information set forth in Part II, Item 7 of our 2016 Form 10-K.

FORWARD-LOOKING STATEMENTS

Certain matters discussed in this Quarterly Report on Form 10-Q, other than statements of historical fact, are “forward-looking statements.” within the meaning of Section 27A of the Securities Act of 1933, as amended (the "Securities Act"), and Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Forward-looking statements often include words like we "believe", "anticipate", "target", "project", "expect", "predict", "pro forma", "estimate", "intend", "will", "is designed to", "plan", and words of similar meaning, or are indicated by the Company's discussion of strategies or trends. Forward-looking statements describe the Company's future plans, objectives, expectations or goals. Although the Company believes that the expectations reflected in such forward-looking statements are reasonable, no assurances can be given that these expectations will prove to be correct. Such statements address future events and conditions and include, but are not limited to:

• capital expenditures,

• earnings,

• liquidity and capital resources,

• ratemaking/regulatory matters,

• litigation,

• accounting matters,

• possible corporate restructurings, acquisitions and dispositions,

• compliance with debt and other restrictive covenants,

• interest rates and dividends,

• environmental matters,

• nuclear operations, and

• the overall economy of our service area.

These forward-looking statements are based on assumptions and analyses in light of the Company's experience and perception of historical trends, current conditions, expected future developments, and other factors the Company believes were appropriate in the circumstances when the statements were made. Forward-looking statements by their nature involve substantial risks and uncertainties that could significantly impact expected results, and actual future results could differ materially from those described in such statements. While it is not possible to identify all factors, the Company continues to face many risks and uncertainties. Factors that would cause or contribute to such differences include, but are not limited to:

• actions of the Company's regulators,

• the Company's ability to fully and timely recover its costs and earn a reasonable rate of return on its invested capital through the rates that it is permitted to charge,

• rates, cost recovery mechanisms and other regulatory matters including the ability to recover fuel costs on a timely basis,

• the ability of the Company's operating partners to maintain plant operations and manage operation and maintenance ("O&M") costs at Palo Verde Nuclear Generating Station ("Palo Verde"), including costs to comply with any new or expanded regulatory or environmental requirements,

• reductions in output at generation plants operated by the Company,

• the size of the Company's construction program and its ability to complete construction on budget and on time,

• the Company's reliance on significant customers,

• the credit worthiness of the Company's customers,

• unscheduled outages of generating units including outages at Palo Verde,

• changes in customers' demand for electricity as a result of energy efficiency initiatives and emerging competing services and technologies, including distributed generation,

• individual customer groups, including distributed generation customers, may not pay their full cost of service, and other customers may or may not be required to pay the difference,

• changes in, and the assumptions used for, pension and other post-retirement and post-employment benefit liability calculations, as well as actual and assumed investment returns on pension plan and other post-retirement plan assets,

• the impact of changing cost escalation and other assumptions on the Company's nuclear decommissioning liability for Palo Verde, as well as actual and assumed investment returns on decommissioning trust fund assets,

25

• disruptions in the Company's transmission system, and in particular the lines that deliver power from its remote generating facilities,

• electric utility deregulation or re-regulation,

• regulated and competitive markets,

• ongoing municipal, state and federal activities,

• cuts in military spending or shutdowns of the federal government that reduce demand for the Company's services from military and governmental customers,

• political, legislative, judicial and regulatory developments,

• homeland security considerations, including those associated with the U.S./Mexico border region and the energy industry,

• changes in environmental laws and regulations and the enforcement or interpretation thereof, including those related to air, water or greenhouse gas emissions or other environmental matters,

• economic and capital market conditions,

• changes in accounting requirements and other accounting matters,

• changing weather trends and the impact of severe weather conditions,

• possible physical or cyber attacks, intrusions or other catastrophic events,

• the impact of lawsuits filed against the Company,

• the impact of changes in interest rates,

• Texas, New Mexico and electric industry utility service reliability standards,

• coal, uranium, natural gas, oil and wholesale electricity prices and availability,

• possible income tax and interest payments as a result of audit adjustments proposed by the Internal Revenue Service or state taxing authorities,

• the impact of U.S. health care reform legislation,

• loss of key personnel, the Company's ability to recruit and retain qualified employees and the Company's ability to successfully implement succession planning, and

• other circumstances affecting anticipated operations, sales and costs.

These lists are not all-inclusive because it is not possible to predict all factors. A discussion of some of these factors is included in the 2016 Form 10-K under the headings “Risk Factors” and “Management's Discussion and Analysis” “-Summary of Critical Accounting Policies and Estimates” and “-Liquidity and Capital Resources.” This Quarterly Report on Form 10-Q should be read in its entirety. Management cautions against putting undue reliance on forward-looking statements or projecting any future results based on such statements or present or prior earnings levels. Any forward-looking statement speaks only as of the date such statement was made, and the Company is not obligated to update any forward-looking statement to reflect events or circumstances after the date on which such statement was made, except as required by applicable laws or regulations.

Summary of Critical Accounting Policies and Estimates

The preparation of our financial statements requires management to make estimates and assumptions that affect the amounts reported in the financial statements and related notes for the periods presented and actual results could differ in future periods from those estimates. Critical accounting policies and estimates are both important to the portrayal of our financial condition and results of operations and require complex, subjective judgments and are more fully described in the "Management's Discussion and Analysis of Financial Condition and Results of Operations" in our 2016 Form 10-K.

Summary

The following is an overview of our results of operations for the three and twelve month periods ended March 31, 2017 and 2016. Net income (loss) and basic earnings (loss) per share for the three and twelve month periods ended March 31, 2017 and 2016 are shown below:

	Three Months Ended						Twelve Months Ended
	March 31,						March 31,
	2017			2016			2017		2016
Net income (loss) (in thousands)	$	(3,989	)	$	(5,808	)	$	98,587	$	72,652
Basic earnings (loss) per share	(0.10		)	(0.14		)	2.43		1.80

26

Financial Effect of the PUCT Final Order

On August 25, 2016, the Public Utility Commission of Texas ("PUCT") issued its final order in the Company's rate case in Docket No. 44941 (the "PUCT Final Order"). The PUCT Final Order had a significant effect on the Company's first quarter 2017 financial results, the impacts of which are reflected in the table below. For financial reporting purposes, the Company deferred any recognition of the Company's request in its 2015 Texas Retail Rate Case until it received the PUCT Final Order in August 2016. Accordingly, it recorded in the third quarter of 2016 the cumulative effect of the PUCT Final Order that related back to January 12, 2016. The impact of the PUCT Final Order recorded in August 2016 relating to the first quarter of 2016 would have increased net income by approximately $4.6 million.

The following table shows the primary factors affecting the after-tax change in net income (loss) between the 2017 and 2016 periods presented (in thousands):

	Three Months Ended			Twelve Months Ended
March 31, 2016 net income (loss)	$	(5,808	)	$	72,652
Change in (net of tax):
Decreased allowance for funds used during construction (a)	(2,085		)	(4,408		)
(Increased) decreased operation and maintenance at fossil-fuel generating plants (b)	(1,625		)	107
Increased interest on long-term debt (c)	(1,149		)	(4,774		)
Increased retail non-fuel base revenues (d)	3,360			31,538
Decreased depreciation and amortization (e)	884			5,586
Increased other revenues (f)	674			2,484
Decreased Palo Verde operation and maintenance expenses (g)	478			1,270
Effective tax rate (h)	476			(5,408		)
Other	806			(460		)
March 31, 2017 net income (loss)	$	(3,989	)	$	98,587

______________

All information presented below is expressed in pre-tax amounts except when stated otherwise.

(a) Allowance for funds used during construction ("AFUDC") decreased for the three and twelve months ended March 31, 2017 compared to the three and twelve months ended March 31, 2016 due to (i) lower balances of construction work in progress ("CWIP"), primarily due to Montana Power Station ("MPS") Units 3 and 4 being placed in service in May and September 2016, respectively, and (ii) reductions in the AFUDC rate.

(b) O&M expenses at our fossil fuel generating plants increased for the three months ended March 31, 2017 compared to the three months ended March 31, 2017, primarily due to (i) increased maintenance expense for outages at Newman Generating Station ("Newman") Units 1, 3, & 4 and (ii) increased routine maintenance at MPS and Rio Grande Generating Station ("Rio Grande"). These increases were partially offset by the sale of the Company's interest in Units 4 and 5 of Four Corners Generating Station ("Four Corners") in July 2016 and a maintenance outage at Rio Grande Unit 7 in 2016 with no comparable activity in 2017.

O&M expenses at our fossil fuel generating plants decreased for the twelve months ended March 31, 2017 compared to the twelve months ended March 31, 2017, primarily due to (i) the sale of the Company's interest in Units 4 and 5 of Four Corners in July 2016, and (ii) decreased maintenance expense for outages at Newman Unit 5 and Rio Grande Unit 7. These increases were partially offset by (i) increased maintenance expense for outages at Newman Units 1, 3, & 4 and (ii) an overall increase in routine maintenance at MPS and Rio Grande.

(c) Interest on long-term debt increased for the three and twelve months ended March 31, 2017 compared to the three and twelve months ended March 31, 2016 primarily due to the $150.0 million principal amount of senior notes issued in March 2016.

(d) Retail non-fuel base revenues increased for the three months ended March 31, 2017 compared to the three months ended March 31, 2016 primarily due to the non-fuel base rate increase approved in the PUCT Final Order. The first quarter of 2016

27

did not include approximately $5.9 million of retail non-fuel base revenues for the period from January 12, 2016 through March 31, 2016, which revenues were not recognized until the PUCT Final Order was approved in August 2016. The 1.7% growth in the average number of retail customers served also contributed to the increase in retail non-fuel base revenues. This increase was partially offset by a decrease in kWh sales from residential customers primarily due to mild weather in the first quarter of 2017 as compared to the first quarter of 2016.

Retail non-fuel base revenues increased for the twelve months ended March 31, 2017 compared to the twelve months ended March 31, 2016 primarily due to the non-fuel base rate increase approved in the PUCT Final Order. Excluding the impact of the PUCT Final Order, the 1.5% growth in the average number of retail customers served contributed to the remaining increase in retail non-fuel base revenues, see page 29 for a complete discussion.

(e) Depreciation and amortization decreased for the three and twelve months ended March 31, 2017 compared to the three and twelve months ended March 31, 2016 primarily due to (i) reductions in depreciation rates as approved by the PUCT and the New Mexico Public Regulation Commission ("NMPRC") in the PUCT Final Order and the final order of the NMPRC in Case No. 15-00127-UT issued on June 8, 2016 (the "NMPRC Final Order"), respectively, and (ii) the sale of the Company's interest in Units 4 and 5 of Four Corners. These decreases were partially offset by increases in plant, including MPS Units 3 and 4, which were placed in service in May and September 2016, respectively.

(f) Other revenues increased for the three months ended March 31, 2017 compared to the three months ended March 31, 2016 primarily due to (i) additional miscellaneous service revenues as a result of rate increases approved in the PUCT Final Order and in the NMPRC Final Order and (ii) the New Mexico energy efficiency bonus.

Other revenues increased for the twelve months ended March 31, 2017 compared to the twelve months ended March 31, 2016 primarily due to (i) additional miscellaneous service revenues as a result of rate increases approved in the PUCT Final Order and in the NMPRC Final Order and (ii) increased transmission wheeling revenues.

(g) Palo Verde O&M expenses decreased for the three months ended March 31, 2017 compared to the three months ended March 31, 2016 primarily due to decreased maintenance expense at Unit 1, partially offset by increased maintenance expense at Unit 2.

Palo Verde O&M expenses decreased for the twelve months ended March 31, 2017 compared to the twelve months ended March 31, 2016 primarily due to decreased maintenance at Unit 2 and lower operation expenses at all three Palo Verde units, partially offset by increased maintenance expense at Unit 1.

(h) The effective tax rate increased for the three months ended March 31, 2017 compared to the three months ended March 31, 2016 primarily due to the change to normalize state income taxes, which created an increased income tax benefit due to the net losses in both periods.

The effective tax rate increased for the twelve months ended March 31, 2017 compared to the twelve months ended March 31, 2016 primarily due to the change to normalize state income taxes, which created an increased income tax expense due to the net income in both periods.

28

Historical Results of Operations

The following discussion includes detailed descriptions of factors affecting individual line items in the results of operations. The amounts presented below are presented on a pre-tax basis.

Operating revenues

We realize revenue from the sale of electricity to retail customers at regulated rates and the sale of energy in the wholesale power market generally at market-based prices. Sales for resale (which are Federal Energy Regulatory Commission ("FERC")-regulated cost-based wholesale sales within our service territory) accounted for less than 1% of revenues.

Revenues from the sale of electricity include fuel costs that are recovered from our customers through fuel adjustment mechanisms. Historically, a significant portion of fuel costs have been recovered through base rates in New Mexico. Effective July 1, 2016, with the implementation of the NMPRC Final Order, fuel costs are no longer recovered through base rates. Beginning July 1, 2016, all fuel costs are recovered through a fuel adjustment mechanism. We record deferred fuel revenues for the difference between actual fuel costs and recoverable fuel revenues until such amounts are collected from or refunded to customers. “Non-fuel base revenues” refers to our revenues from the sale of electricity excluding such fuel costs.    

No retail customer accounted for more than 4% of our non-fuel base revenues. Residential and small commercial customers comprise 75% or more of our non-fuel base revenues. While this customer base is more stable, it is also more sensitive to changes in weather conditions. The current rate structures in Texas and New Mexico reflect higher base rates during the peak summer season of May through October and lower base rates during November through April for our residential and small commercial and industrial customers. As a result, our business is seasonal, with higher kWh sales and revenues during the summer cooling season.

Weather significantly impacts our residential, small commercial and industrial customers, and to a lesser extent, our sales to public authorities. Heating and cooling degree days can be used to evaluate the effect of weather on energy use. For each degree the average outdoor temperature varies from a standard of 65 degrees Fahrenheit, a degree day is recorded. For the three and twelve months ended March 31, 2017, retail non-fuel base revenues were negatively impacted by mild weather when compared to the three and twelve months ended March 31, 2016. Heating degree days for the first quarter of 2017 decreased 23.1% when compared to the first quarter of 2016, and were 28.6% below the 10-year average. For the quarter ended March 31, 2017, the number of heating degree days recorded was the lowest total recorded in more than 70 years. For the twelve months ended March 31, 2017, heating degree days decreased 19.5% when compared to the twelve months ended March 31, 2016, and were 25.5% below the 10-year average. For the twelve months ended March 31, 2017, cooling degree days increased 1.1% when compared to the twelve months ended March 31, 2016, and were 4.7% above the 10-year average. The table below shows heating and cooling degree days compared to a 10-year average.

	Three Months Ended			Twelve Months Ended
	March 31,			March 31,
			10-Year			10-Year
	2017	2016	Average	2017	2016	Average*
Heating degree days	810	1,054	1,135	1,607	1,996	2,157
Cooling degree days	72	23	34	2,860	2,828	2,732

______________

* Calendar year basis.

Customer growth is a key driver of the growth of retail sales. The average number of retail customers grew 1.7% and 1.5% for the three and twelve months ended March 31, 2017, respectively, when compared to the three and twelve months ended March 31, 2016. See the tables presented on pages 31 and 32, which provide detail on the average number of retail customers and the related revenues and kWh sales.

Retail non-fuel base revenues. Retail non-fuel revenues increased in the first quarter of 2017 primarily due to the non-fuel base rate increase approved in the PUCT Final Order. The first quarter of 2016 did not include approximately $5.9 million of retail non-fuel base revenues for the period from January 12, 2016 through March 31, 2016, which revenues were not recognized until the PUCT Final Order was approved in August 2016. The 1.7% growth in the average number of retail customers served also contributed to the increase in retail non-fuel base revenues. This increase was partially offset by a decrease in kWh sales from residential customers primarily due to mild weather in the first quarter of 2017 as compared to the first quarter of 2016.

Excluding the $5.9 million PUCT Final Order impact, for the first quarter of 2017, retail non-fuel base revenues decreased $0.8 million pre-tax, or 0.7%, compared to the first quarter of 2016. This decrease in sales was primarily due to mild weather. Heating degree days for the first quarter of 2017 were 28.6% below the 10-year average. For the quarter ended March 31, 2017,

29

the number of heating degree days recorded was the lowest total recorded in more than 70 years. Continued growth of 1.5% in the average number of residential customers served partially offset some of the weather impact. The decrease in retail non-fuel base revenues was partially offset by a $1.0 million increase in revenues from small commercial and industrial customers, largely due to a 3.8% increase in the average number of customers served.

The increase in reported retail non-fuel base revenues for the twelve months ended March, 31, 2017 compared to the twelve months ended March 31, 2016 was $48.5 million. Included in this increase is $46.8 million related to the effects of the PUCT Final Order received in August 2016. The annual impact of the PUCT Final Order was $40.9 million all of which was recorded in the twelve months ended March 31, 2017. Included in the PUCT Final Order annual impact was $5.9 million related to the period from January 12, 2016 through March 31, 2016 which was recognized in August 2016.

Excluding the PUCT Final Order impact, for the twelve months ended March 31, 2017, retail non-fuel base revenues increased by $1.7 million or 0.3% compared to the twelve months ended March 31, 2016. This increase included a $3.4 million increase in sales to small commercial and industrial customers and a $1.9 million increase in sales to residential customers reflecting an increase in the average number of retail customers served of 2.5% and 1.4%, respectively. Revenues from large commercial and industrial customers decreased by $2.3 million due to reduced demand by the steel manufacturing industry and a decrease in surcharges billed to a large customer. Revenues from public authority customers decreased $1.3 million reflecting a 1.7% decrease in kWh sales.

Fuel revenues. Fuel revenues consist of (i) revenues collected from customers under fuel recovery mechanisms approved by the state commissions and the FERC, (ii) deferred fuel revenues which are comprised of the difference between fuel costs and fuel revenues collected from customers, and (iii) prior to July 1, 2016, fuel costs recovered in base rates in New Mexico. In New Mexico, effective July 1, 2016, with the implementation of the NMPRC Final Order, fuel and purchased power costs will no longer be recovered through base rates, as it was historically, but will be completely recovered through the FPPCAC. Fuel and purchased power costs are reconciled to actual costs on a monthly basis and recovered or refunded to customers the second succeeding month. In Texas, fuel costs are recovered through a fixed fuel factor. We can seek to revise our fixed fuel factor based upon an approved formula at least four months after our last revision except in the month of December. In addition, if we materially over-recover fuel costs, we must seek to refund the over-recovery, and if we materially under-recover fuel costs, we may seek a surcharge to recover those costs. Fuel over- and under-recoveries are defined as material when they exceed 4% of the previous twelve months' fuel costs.

In the three and twelve months ended March 31, 2017, we over-recovered our fuel costs by $8.5 million and under-recovered our fuel costs by $10.5 million, respectively. On April 15, 2015, we filed a request, which was assigned PUCT Docket No. 44633, to reduce our fixed fuel factor by approximately 24% to reflect an expected reduction in fuel expense. The reduction in the fixed fuel factor was effective on an interim basis on May 1, 2015, and was approved by the PUCT on May 20, 2015. In March 2016 and March 2017, $1.6 million and $1.4 million, respectively, were credited to customers through the applicable fuel adjustment clauses as the result of a reimbursement from the U.S. Department of Energy ("DOE") related to spent nuclear fuel storage. At March 31, 2017, we had a net fuel under-recovery balance of $2.3 million, including an under-recovery of $2.5 million in Texas, offset by an over-recovery of $0.2 million in New Mexico. On November 30, 2016, we filed a request to increase our Texas fixed fuel factor by approximately 28.8% to reflect increased fuel expenses primarily related to an increase in the price of natural gas used to generate power. The increase in the fixed fuel factor was effective on an interim basis on January 1, 2017 and was approved by the PUCT on January 10, 2017.

Off-system sales. Off-system sales are wholesale sales into markets outside our service territory. Off-system sales are primarily made in off-peak periods when we have competitive generation capacity available after meeting our regulated service obligations. We have shared 100% of margins on non-arbitrage sales (as defined by the settlement in PUCT Docket No. 41852) and 50% of margins on arbitrage sales with our Texas customers since April 1, 2014. We are currently sharing 90% of off-system sales margins with our New Mexico customers, and 25% of our off-system sales margins with our sales for resale customer under the terms of their contract. Palo Verde's availability is an important factor in realizing these off-system sales margins.

Off-system sales revenues increased $2.8 million, or 24.5%, for the three months ended March 31, 2017, when compared to the three months ended March 31, 2016, as a result of a 3.1% increase in kWh sales, partially offset by lower average market prices for power. Retained margins from off-system sales increased 27.5% for the three months ended March 31, 2017, when compared to the three months ended March 31, 2016. Off-system sales revenues decreased $10.6 million, or 17.9%, for the twelve months ended March 31, 2017, when compared to the twelve months ended March 31, 2016, as a result of lower average market prices for power and a 18.8% decrease in kWh sales.

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Comparisons of kWh sales and operating revenues are shown below (in thousands):
							Increase (Decrease)
Quarter Ended March 31:	2017			2016			Amount			Percent
kWh sales:
Retail:
Residential	545,128			569,085			(23,957		)	(4.2	)%
Commercial and industrial, small	500,590			500,226			364			0.1
Commercial and industrial, large	252,998			244,926			8,072			3.3
Sales to public authorities	335,563			346,235			(10,672		)	(3.1	)
Total retail sales	1,634,279			1,660,472			(26,193		)	(1.6	)
Wholesale:
Sales for resale	10,921			11,841			(920		)	(7.8	)
Off-system sales	596,762			578,673			18,089			3.1
Total wholesale sales	607,683			590,514			17,169			2.9
Total kWh sales	2,241,962			2,250,986			(9,024		)	(0.4	)
Operating revenues:
Non-fuel base revenues:
Retail:
Residential	$	51,310		$	47,743		$	3,567		7.5	%
Commercial and industrial, small	33,785			32,140			1,645			5.1
Commercial and industrial, large	7,900			8,093			(193		)	(2.4	)
Sales to public authorities	17,550			17,400			150			0.9
Total retail non-fuel base revenues (1)	110,545			105,376			5,169			4.9
Wholesale:
Sales for resale	463			369			94			25.5
Total non-fuel base revenues	111,008			105,745			5,263			5.0
Fuel revenues:
Recovered from customers during the period	47,620			22,534			25,086			—
Over collection of fuel (2)	(8,530		)	(4,103		)	(4,427		)	—
New Mexico fuel in base rates (3)	—			16,226			(16,226		)	—
Total fuel revenues (4)	39,090			34,657			4,433			12.8
Off-system sales:
Fuel cost	11,528			8,492			3,036			35.8
Shared margins	2,213			2,555			(342		)	(13.4	)
Retained margins	459			360			99			27.5
Total off-system sales	14,200			11,407			2,793			24.5
Other (5)	7,037			6,000			1,037			17.3
Total operating revenues	$	171,335		$	157,809		$	13,526		8.6
Average number of retail customers (6):
Residential	365,311			360,048			5,263			1.5	%
Commercial and industrial, small	42,076			40,537			1,539			3.8
Commercial and industrial, large	49			49			—			—
Sales to public authorities	5,433			5,372			61			1.1
Total	412,869			406,006			6,863			1.7

________________________________________

(1) 2016 excludes $5.9 million of relate back revenues in Texas from January 12, 2016 through March 31, 2016 which were recorded in August 2016.

(2) Includes the portion of DOE refunds related to spent fuel storage of $1.4 million and $1.6 million in 2017 and 2016, respectively, that were credited to customers through the applicable fuel adjustment clauses.

(3) Historically, fuel and purchased power costs were recorded through base rates and a FPPCAC that accounts for the changes in the costs of fuel relative to the amount included in base rates. Effective July 1, 2016, with the implementation of the NMPRC Final Order, these costs are no longer recovered through base rates but are recovered through the FPPCAC.

(4) Includes deregulated Palo Verde Unit 3 revenues for the New Mexico jurisdiction of $2.8 million and $2.2 million in 2017 and 2016, respectively.

(5) Represents revenues with no related kWh sales.

(6) The number of retail customers is based on the number of service locations.

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Comparisons of kWh sales and operating revenues are shown below (in thousands):
						Increase (Decrease)
Twelve Months Ended March 31:	2017		2016			Amount			Percent
kWh sales:
Retail:
Residential	2,781,832		2,778,570			3,262			0.1	%
Commercial and industrial, small	2,403,811		2,394,674			9,137			0.4
Commercial and industrial, large	1,038,817		1,054,468			(15,651		)	(1.5	)
Sales to public authorities	1,561,838		1,588,710			(26,872		)	(1.7	)
Total retail sales	7,786,298		7,816,422			(30,124		)	(0.4	)
Wholesale:
Sales for resale	61,166		63,243			(2,077		)	(3.3	)
Off-system sales	1,945,597		2,396,091			(450,494		)	(18.8	)
Total wholesale sales	2,006,763		2,459,334			(452,571		)	(18.4	)
Total kWh sales	9,793,061		10,275,756			(482,695		)	(4.7	)
Operating revenues:
Non-fuel base revenues:
Retail:
Residential	$	282,341	$	247,068		$	35,273		14.3	%
Commercial and industrial, small	196,587		187,606			8,981			4.8
Commercial and industrial, large	38,877		40,255			(1,378		)	(3.4	)
Sales to public authorities	97,031		91,386			5,645			6.2
Total retail non-fuel base revenues (1) (2)	614,836		566,315			48,521			8.6
Wholesale:
Sales for resale	2,501		2,384			117			4.9
Total non-fuel base revenues	617,337		568,699			48,638			8.6
Fuel revenues:
Recovered from customers during the period	173,483		115,877			57,606			49.7
Under (over) collection of fuel (3)	10,466		(1,758		)	12,224			—
New Mexico fuel in base rates (4)	17,053		72,242			(55,189		)	(76.4	)
Total fuel revenues (5)	201,002		186,361			14,641			7.9
Off-system sales:
Fuel cost	41,969		48,033			(6,064		)	(12.6	)
Shared margins	5,290		9,667			(4,377		)	(45.3	)
Retained margins	1,236		1,366			(130		)	(9.5	)
Total off-system sales	48,495		59,066			(10,571		)	(17.9	)
Other (6) (7)	33,628		29,806			3,822			12.8
Total operating revenues	$	900,462	$	843,932		$	56,530		6.7
Average number of retail customers (8):
Residential	363,454		358,290			5,164			1.4	%
Commercial and industrial, small	41,398		40,375			1,023			2.5
Commercial and industrial, large	49		49			—			—
Sales to public authorities	5,319		5,290			29			0.5
Total	410,220		404,004			6,216			1.5

(1) 2017 includes a $40.9 million increase resulting from the PUCT Final Order in 2016, which includes $5.9 million of relate back revenues in Texas from January 12, 2016 through March 31, 2016 which were recorded in August 2016.

(2) 2016 excludes $5.9 million of relate back revenues in Texas from January 12, 2016 through March 31, 2016 which were recorded in August 2016.

(3) Includes the portion of DOE refunds related to spent fuel storage of $1.4 million and $1.6 million in 2017 and 2016, respectively, that were credited to customers through the applicable fuel adjustment clauses.

(4) Historically, fuel and purchased power costs were recorded through base rates and a FPPCAC that accounts for the changes in the costs of fuel relative to the amount included in base rates. Effective July 1, 2016, with the implementation of the NMPRC Final Order, these costs are no longer recovered through base rates but are recovered through the FPPCAC.

(5) Includes deregulated Palo Verde Unit 3 revenues for the New Mexico jurisdiction of $9.3 million and $8.8 million in 2017 and 2016, respectively.

(6) Represents revenues with no related kWh sales.

(7) Includes an Energy Efficiency Bonus of $0.8 million and $1.3 million in 2017 and 2016, respectively.

(8) The number of retail customers presented is based on the number of service locations.

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Energy expenses

Our sources of energy include electricity generated from our nuclear and natural gas generating plants and purchased power. After adding the new natural gas generating units MPS Units 1 and 2 in March 2015 and MPS Units 3 and 4 in May 2016 and September 2016, respectively, into the Company's system generation resources, Palo Verde represents approximately 30% of our net dependable generating capacity and approximately 70% and 59% of our Company-generated energy for the three and twelve months endedMarch 31, 2017, respectively. Fluctuations in the price of natural gas, which also is the primary factor influencing the price of purchased power, have had a significant impact on our cost of energy.

Energy expenses increased $6.3 million, or 14.4%, for the three months ended March 31, 2017, when compared to the three months ended March 31, 2016, primarily due to (i) increased natural gas costs of $5.0 million due to a 37.9% increase in the average price of natural gas and (ii) increased total purchased power costs of $4.0 million due to a 56.9% increase in the MWhs purchased. These increases in energy expenses were partially offset by decreased coal costs of $2.4 million as a result of the sale of our interest in Four Corners, a coal-fired generation station, on July 6, 2016.

	Three Months Ended March 31,
	2017						2016
Fuel Type	Cost			MWh	Cost per MWh		Cost			MWh	Cost per MWh
	(in thousands)						(in thousands)
Natural gas	$	26,106		570,825	$	45.73	$	21,136		637,430	$	33.16
Coal	208		(a)	—	—		2,635			81,006	32.53
Nuclear	10,292		(b)	1,363,527	8.70		10,548		(b)	1,380,497	8.94
Total	36,606			1,934,352	19.73		34,319			2,098,933	17.20
Purchased power:
Photovoltaic	5,298			64,735	81.84		5,508			67,764	81.28
Other	8,375			363,375	23.05		4,138			205,157	20.17
Total purchased power	13,673			428,110	31.94		9,646			272,921	35.34
Total energy	$	50,279		2,362,462	21.95		$	43,965		2,371,854	19.30

_______________

(a) The sale of our interest in Four Corners, a coal-fired generation station, closed on July 6, 2016. The cost reported in 2017 represents the

amortization of deferred coal mine reclamation obligations.

(b) Cost includes a DOE refund related to spent fuel storage of $1.6 million and $1.8 million recorded in March 2017 and 2016, respectively. Cost per MWh excludes these refunds.

Energy expenses increased $2.8 million, or 1.2%, for the twelve months ended March 31, 2017, when compared to the twelve months ended March 31, 2016, primarily due to (i) increased total purchased power costs of $11.7 million due to a 25.3% increase in MWhs purchased and (ii) increased natural gas costs of $2.1 million due to a 9.6% increase in the average price of natural gas. These increases in energy expenses were partially offset by (i) decreased coal costs of $9.7 million as a result of the sale of our interest in Four Corners, a coal-fired generation station, on July 6, 2016 and (ii) decreased nuclear costs of $1.3 million due to a 1.5% decrease in MWhs generated.

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	Twelve Months Ended March 31,
	2017						2016
Fuel Type	Cost			MWh	Cost per MWh		Cost			MWh	Cost per MWh
	(in thousands)						(in thousands)
Natural gas	$	128,776		3,484,299	$	36.96	$	126,749		3,759,514	$	33.71
Coal	3,727		(a)	94,252	39.54		13,432			601,532	22.33
Nuclear	43,522		(b)	5,076,874	8.88		44,809		(b)	5,154,989	9.04
Total	176,025			8,655,425	20.52		184,990			9,516,035	19.63
Purchased power:
Photovoltaic	23,203			286,771	80.91		23,200			285,946	81.13
Other	40,551			1,420,669	28.54		28,816			1,077,149	26.75
Total purchased power	63,754			1,707,440	37.34		52,016			1,363,095	38.16
Total energy	$	239,779		10,362,865	23.29		$	237,006		10,879,130	21.95

_____________

(a) The sale of our interest in Four Corners, coal-fired generation station, closed on July 6, 2016. The cost reported in 2017 represents the

amortization of deferred coal mine reclamation obligations.

(b) Cost includes a DOE refund related to spent fuel storage of $1.6 million and $1.8 million recorded in March 2017 and 2016, respectively. Cost per MWh excludes these refunds.

Other operations expense

Other operations expense decreased $2.3 million, or 3.9%, for the three months ended March 31, 2017, compared to the three months ended March 31, 2016 primarily due to a $2.8 million decrease due to the sale of the Company's interest in Units 4 and 5 of Four Corners in July 2016.

Other operations expense decreased $6.0 million, or 2.4%, for the twelve months ended March 31, 2017, compared to the twelve months ended March 31, 2016 primarily due to (i) a $4.5 million decrease due to the sale of the Company's interest in Units 4 and 5 of Four Corners in July 2016, (ii) a $2.7 million decrease in pension and benefit costs due to an amendment to the other post-retirement benefit plan and changes in actuarial assumptions used to calculate expenses for the post-retirement benefits plans, partially offset by higher medical and other employee benefit costs, and (iii) a $1.7 million decrease in operating expenses at Palo Verde. These decreases were offset by (i) increased regulatory expense of $2.0 million primarily related to certain of the 2015 New Mexico and Texas rate case costs being expensed, and (ii) increased operating expenses of $0.8 million at MPS, Newman, and Rio Grande.

Maintenance expense

Maintenance expense increased $3.5 million, or 19.8%, for the three months ended March 31, 2017, compared to the three months ended March 31, 2016 primarily due to (i) increased maintenance expense of $5.5 million for outages at Newman Units 1, 3, & 4 and (ii) increased routine maintenance of $1.5 million at MPS and Rio Grande. These increases were partially offset by $3.4 million due to the sale of the Company's interest in Units 4 and 5 of Four Corners in July 2016 and by $1.0 million for a maintenance outage at Rio Grande Unit 7 in 2016 with no comparable activity in 2017.

Maintenance expense increased $3.0 million, or 4.5%, for the twelve months ended March 31, 2017 compared to the twelve months ended March 31, 2017 primarily due to (i) increased maintenance expense of $5.5 million for outages at Newman Units 1, 3, & 4, (ii) increased routine maintenance of $2.3 million at MPS and Rio Grande, and (iii) a $0.8 million increase in transmission and distribution contractor costs. These increases were partially offset by $4.6 million due to the sale of the Company's interest in Units 4 and 5 of Four Corners in July 2016.

Depreciation and amortization expense

Depreciation and amortization expense decreased $1.4 million and $8.6 million, or 5.8% and 9.4%, for the three and twelve months ended March 31, 2017, respectively, compared to the three and twelve months ended March 31, 2016, primarily due to reductions of approximately $2.9 million and $11.3 million, respectively, resulting from changes in depreciation rates approved in the PUCT Final Order and the NMPRC Final Order, and the sale of the Company's interest in Four Corners in July 2016. The decrease was partially offset by an increase in depreciation due to an increase in plant, including MPS Units 3 and 4 which were placed in service in May and September 2016, respectively.

34

Taxes other than income taxes

Taxes other than income taxes increased $0.9 million, or 6.2%, for the three months ended March 31, 2017 and $2.1 million, or 3.2%, for the twelve months ended March 31, 2017 compared to the same periods in the prior year primarily due to increased property tax rates and valuations in Texas as a result of MPS Units 3 and 4 being placed in service in 2016 and increased billed revenues in Texas.

Other income (deductions)

Other income (deductions) decreased $1.3 million, or 24.0%, for the three months ended March 31, 2017 compared to the three months ended March 31, 2016, primarily due to (i) decreased allowance for equity funds used during construction ("AEFUDC") resulting from lower average balances of CWIP and a reduction in the AEFUDC rate, (ii) gain on the sale of land in 2016 with no comparable activity in 2017, and (iii) increased miscellaneous deductions due to timing of charitable donations. These decreases were partially offset by increased investment and interest income due to higher realized gains in our decommissioning trust funds in 2017.

Other income (deductions) decreased $4.7 million, or 21.4%, for the twelve months ended March 31, 2017 compared to the twelve months ended March 31, 2016, primarily due to (i) decreased AEFUDC resulting from lower averages balances of CWIP and a reduction in the AEFUDC rate and (ii) decreased miscellaneous other income due to net gains recognized on sale of assets in 2016 with no comparable activity in 2017.

Interest charges (credits)

Interest charges (credits) increased by $2.4 million and $8.5 million, or 17.1% and 15.0% , for the three and twelve months ended March 31, 2017, respectively, compared to the three and twelve months ended March 31, 2016, primarily due to (i) increased interest expense on the $150 million of 5.00% Senior Notes due 2044 issued in March 2016 and (ii) decreased allowance for ABFUDC as a result of lower average balances of CWIP and a reduction in the ABFUDC accrual rate. These increases were partially offset by a decrease in interest on short-term borrowing for working capital purposes.

Income tax expense (benefit)

Income tax benefit decreased $0.9 million, or 27.6%, for the three months ended March 31, 2017 and income tax expense increased $24.0 million, or 78.2%, for the twelve months ended March 31, 2017 compared to the three and twelve months ended March 31, 2016, primarily due to increases in pre-tax income and increases in state income taxes due to normalization as discussed in Note F of the Notes to Financial Statements.

New Accounting Standards

See Notes to Financial Statements Note A for a discussion of new accounting standards.

Inflation

For the last several years, inflation has been relatively low and, therefore, has had minimal impact on our results of operations and financial condition.

35

Liquidity and Capital Resources

In March 2016, we issued $150.0 million aggregate principal amount of 5.00% Senior Notes due December 1, 2044 to repay outstanding short-term borrowings under our Revolving Credit Facility ("RCF") used for working capital and general corporate purposes, which may include funding capital expenditures. Despite such issuances of senior notes, we continue to maintain a strong balance of common stock equity in our capital structure which supports our bond ratings, allowing us to obtain financing from the capital markets at a reasonable cost. At March 31, 2017, our capital structure, including common stock, long-term debt, current maturities of long-term debt, and short-term borrowings under the RCF, consisted of 42.9% common stock equity and 57.1% debt. As of March 31, 2017, we had a balance of $5.2 million of cash and cash equivalents. Based on current projections, we believe that we will have adequate liquidity through our current cash balances, cash from operations, and available borrowings under our RCF to meet all of our anticipated cash requirements for the next twelve months including the upcoming maturities of long term debt.

Our principal liquidity requirements in the near-term are expected to consist of capital expenditures to expand and support electric service obligations, expenditures for nuclear fuel inventory, interest payments on our indebtedness, cash dividend payments, operating expenses including fuel costs, maintenance costs and taxes, payment of our $50.0 million Series B 4.47% Senior Notes which mature in August 2017 and payment or remarketing of $33.3 million 2012 Series A 1.875% Pollution Control Bonds which are subject to mandatory tender for purchase in September 2017.

Capital Requirements. During the three months ended March 31, 2017, our capital requirements primarily consisted of expenditures for the construction and purchase of electric utility plant, cash dividend payments, and purchases of nuclear fuel. Projected utility construction expenditures are to add new generation, expand and update our transmission and distribution systems, and make capital improvements and replacements at Palo Verde and other generating facilities. On May 3, 2016 and September 15, 2016, we placed into commercial operation MPS Units 3 and 4, respectively, and the related common facilities and transmission systems. Estimated cash construction expenditures for all capital projects for 2017 are expected to be approximately $215.0 million. See Part I, Item 1, "Business - Construction Program" in our 2016 Form 10-K. Cash capital expenditures for new electric plant were $53.9 million in the three months ended March 31, 2017 compared to $52.7 million in the three months ended March 31, 2016. Capital requirements for purchases of nuclear fuel were $10.9 million for the three months ended March 31, 2017 compared to $11.2 million for the three months ended March 31, 2016.

On March 31, 2017, we paid a quarterly cash dividend of $0.31 per share, or $12.6 million, to shareholders of record as of the close of business on March 17, 2017. We expect to continue paying quarterly cash dividends. We expect our board of directors to review the dividend policy in the second quarter of 2017. In addition, while we do not currently anticipate repurchasing shares of our common stock in 2017, we may repurchase shares of our common stock in the future. Under our repurchase program, purchases can be made at open market prices or in private transactions, and repurchased shares are available for issuance under employee benefit and stock incentive plans, or may be retired. No shares of common stock were repurchased during the three months ended March 31, 2017. As of March 31, 2017, a total of 393,816 shares remain eligible for repurchase under the repurchase program.

We expect to continue to maintain a prudent level of liquidity and monitor market conditions for debt and equity securities. We primarily utilize the distribution of dividends to maintain a balanced capital structure and supplement this effort with share repurchases when appropriate. Our liquidity needs can fluctuate quickly based on fuel prices and other factors and we are continuing to make investments in new electric plant and other assets in order to reliably serve our customers.

Our cash requirements for federal and state income taxes vary from year to year based on taxable income, which is influenced by the timing of revenues and expenses recognized for income tax purposes. Income tax payments are expected to be minimal in 2017 due to accelerated tax deductions, including bonus depreciation, available in 2017.

We continually evaluate our funding requirements related to our retirement plans, other post-retirement benefit plans, and decommissioning trust funds. During the three months ended March 31, 2017, we contributed $3.0 million and $0.1 million to our retirement plans and other post-retirement benefits plan, respectively, and $1.1 million to our decommissioning trust funds. We are in compliance with the funding requirements of the federal government for our benefit plans. In addition, with respect to our nuclear plant decommissioning trust, we are in compliance with the funding requirements of the federal law and the ANPP Participation Agreement. We will continue to review our funding for these plans in order to meet our future obligations.

In 2010, we and Rio Grande Resources Trust (“RGRT”), a Texas grantor trust through which we finance our portion of fuel for Palo Verde, entered into a note purchase agreement with various institutional purchasers. Under the terms of the agreement, RGRT sold to the purchasers $110.0 million aggregate principal amount of senior notes. In August 2015, $15.0 million of these senior notes matured and were paid with borrowings under the RCF. In August 2016, $50.0 million of these senior notes were reclassified to current maturities of long-term debt on our Balance Sheet, as they will mature in August 2017.

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Capital Resources. Cash provided by operations, $26.1 million for the three months ended March 31, 2017 and $13.9 million for the three months ended March 31, 2016, is a significant source for funding capital requirements. The primary factors contributing to the increase in cash flows from operations were changes in accounts payable and net under/over-collection of fuel revenues. Cash from operations has been impacted by the timing of the recovery of fuel costs through fuel recovery mechanisms in Texas and New Mexico, and our sales for resale customer. We recover actual fuel costs from customers through fuel adjustment mechanisms in Texas and New Mexico, and from our sales for resale customer. We record deferred fuel revenues for the under-recovery or over-recovery of fuel costs until they can be recovered from or refunded to customers. In Texas, fuel costs are recovered through a fixed fuel factor. We can seek to revise our fixed fuel factor at least four months after our last revision except in the month of December based upon our approved formula which allows us to adjust fuel rates to reflect changes in costs of natural gas. We are required to request to refund fuel costs in any month when the over-recovery balance exceeds a threshold material amount and we expect fuel costs to continue to be materially over-recovered. We are permitted to seek to surcharge fuel under-recoveries in any month the balance exceeds a threshold material amount that we expect fuel cost recovery to continue to be materially under-recovered. Fuel over and under-recoveries are considered material when they exceed 4% of the previous twelve months' fuel costs. On November 30, 2016, we filed a request to increase our Texas fixed fuel factor by approximately 28.8% to reflect increasing natural gas costs. This increase was effective on an interim basis on January 1, 2017 and was approved by the PUCT on January 10, 2017. During the three months ended March 31, 2017, we had over-recoveries of fuel costs of $8.5 million compared to over-recoveries of fuel costs of $4.1 million during the three months ended March 31, 2016. At March 31, 2017, we had a net fuel under-recovery balance of $2.3 million, including an under-recovery of $2.5 million in the Texas jurisdiction, offset by an over-recovery of $0.2 million in the New Mexico jurisdiction.

We maintain the RCF for working capital and general corporate purposes and financing nuclear fuel through RGRT. RGRT, the trust through which we finance our portion of nuclear fuel for Palo Verde, is consolidated in our financial statements. On January 9, 2017, we exercised our option to extend the maturity of the RCF by one year to January 14, 2020 and to increase the size of the facility by $50.0 million to $350.0 million. We still have the option to extend the facility by one additional year to January 2021 and to increase the RCF by up to an additional $50.0 million (up to a total of $400.0 million) upon the satisfaction of certain conditions, more fully set forth in the agreement, including obtaining commitments from lenders or third party financial institutions. Additionally, we agreed to reduce the letters of credit commitment under the RCF to $50.0 million from a total commitment of $350.0 million. The total amount borrowed for nuclear fuel by RGRT, excluding debt issuance costs, was $135.2 million at March 31, 2017, of which $40.2 million had been borrowed under the RCF, and $95.0 million was borrowed through senior notes. At March 31, 2016, the total amounts borrowed for nuclear fuel by RGRT, excluding debt issuance costs, were $132.1 million of which $37.1 million had been borrowed under the RCF and $95.0 million was borrowed through senior notes. Interest costs on borrowings to finance nuclear fuel are accumulated by RGRT and charged to us as fuel is consumed and recovered from customers through fuel recovery charges. The outstanding balance for working capital and general corporate purposes was $94.0 million and $50.0 million at March 31, 2017 and 2016, respectively. Total aggregate borrowings under the RCF as of March 31, 2017 were $134.2 million, with available borrowing capacity of $215.3 million thereunder, after giving consideration to the $50.0 million increase on January 9, 2017.

We received approval from the NMPRC on October 7, 2015 and from the FERC on October 19, 2015 to issue up to $310.0 million in new long-term debt and to guarantee the issuance of up to $65.0 million of new debt by RGRT to finance future purchases of nuclear fuel and to refinance existing nuclear fuel debt obligations. We also requested approval from the FERC to continue to utilize our existing RCF without change from the FERC’s previously approved authorization. The FERC authorization is effective from November 15, 2015 through November 15, 2017. The approvals granted in these cases supersede prior approvals. Under this authorization, on March 24, 2016, we issued $150.0 million aggregate principal amount of 5.00% Senior Notes due December 1, 2044. The proceeds from the issuance of these senior notes, after deducting the underwriters' commission, were $158.1 million. These proceeds included accrued interest of $2.4 million and a $7.1 million premium before expenses. The effective interest rate for these senior notes is approximately 4.77%. The net proceeds from the sale of these senior notes were used to repay outstanding short-term borrowings under the RCF. These senior notes constitute an additional issuance of our 5.00% Senior Notes due 2044, of which $150.0 million aggregate principal amount was previously issued on December 1, 2014, for a total principal amount currently outstanding of $300.0 million.

Off-Balance Sheet Arrangements

We have no off-balance sheet arrangements that have or are reasonably likely to have a current or future effect on our financial condition, changes in financial condition, revenues or expenses, results of operations, liquidity, capital expenditures or capital resources.

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Item 3. Quantitative and Qualitative Disclosures About Market Risk

We are exposed to market risk due to changes in interest rates, equity prices and commodity prices. See our 2016 Form 10-K, Item 7A, "Quantitative and Qualitative Disclosures About Market Risk," for a complete discussion of the market risks we face and our market risk sensitive assets and liabilities. As of March 31, 2017, there have been no material changes in the market risks we face or the fair values of assets and liabilities disclosed in Item 7A, "Quantitative and Qualitative Disclosures About Market Risk," in our 2016 Form 10-K Annual Report.

Item 4. Controls and Procedures

Evaluation of disclosure controls and procedures. Under the supervision and with the participation of our management, including our chief executive officer and our chief financial officer, we conducted an evaluation pursuant to Rule 13a-15(b) under the Exchange Act of our disclosure controls and procedures as defined in Rule 13a-15(e) under the Exchange Act. Based on that evaluation, our chief executive officer and our chief financial officer concluded that, as of March 31, 2017, our disclosure controls and procedures are effective.

Changes in internal control over financial reporting. There were no changes in our internal control over financial reporting in connection with the evaluation required by paragraph (d) of the Exchange Act Rules 13a-15 or 15d-15, that occurred during the quarter ended March 31, 2017, that materially affected, or that were reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1. Legal Proceedings

We hereby incorporate by reference the information set forth in Part I of this report under Notes C and H of the Notes to Financial Statements.

Item 1A. Risk Factors

Our 2016 Form 10-K includes a detailed discussion of our risk factors.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

(c) Issuer Purchases of Equity Securities.

Period	Total Number of Shares Purchased (a)	Average Price Paid per Share (Including Commissions)		Total Number of Shares Purchased as Part of a Publicly Announced Program	Maximum Number of Shares that May Yet Be Purchased Under the Plans or Programs
January 1 to January 31, 2017	3,766	$	45.25	—	393,816
February 1 to February 28, 2017	—	—		—	393,816
March 1 to March 31, 2017	—	—		—	393,816

_____________________

(a) Represents shares of common stock delivered to us as payment of withholding taxes due upon the vesting of

restricted stock held by our employees, not considered part of the 2011 Plan.

Item 5. Other Information

Investors should note that we announce material financial information in Securities and Exchange Commission ("SEC") filings, press releases and public conference calls. Based on new guidance from the SEC, we may also use the Investor Relations section of our website (www.epelectric.com) to communicate with investors about our company. It is possible that the financial and other information we post there could be deemed to be material information. The information on our website is not part of this document.

Item 6. Exhibits

See Index to Exhibits incorporated herein by reference.

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SIGNATURES

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.

	EL PASO ELECTRIC COMPANY
By:	/s/ NATHAN T. HIRSCHI
	Nathan T. Hirschi
	Senior Vice President - Chief Financial Officer
	(Duly Authorized Officer and Principal Financial Officer)

Dated: May 5, 2017

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EL PASO ELECTRIC COMPANY

INDEX TO EXHIBITS

Exhibit Number	Exhibit
10.01	Form of Directors' Restricted Stock Award Agreement between the Company and certain directors of the Company
10.02	Form of Officers' Restricted Stock Award Agreement between the Company and certain officers of the Company
15	Letter re Unaudited Interim Financial Information
31.01	Certifications pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.01	Certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Linkbase Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

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EX-10.01

EL PASO ELECTRIC COMPANY

LONG-TERM INCENTIVE AWARD AGREEMENT

(FOR NON-EMPLOYEE DIRECTORS)

El Paso Electric Company, a Texas corporation (the "Company"), has granted to the _____________ (“Holder”), under the El Paso Electric Company Amended and Restated 2007 Long-Term Incentive Plan (the “Plan”), a restricted stock award (the "Award") of a number of shares of the Company's Common Stock, no par value ("Stock"), upon and subject to the restrictions, terms and conditions set forth below. Capitalized terms not defined herein shall have the meanings specified in the Plan.

1. Award Details; Acceptance of Agreement.

The Award shall be null and void unless the Holder shall (a) accept this Agreement by executing it in the space provided below and returning it to the Company and (b) execute and return one or more irrevocable stock powers, if required by the Company. As soon as practicable after the Holder has executed this Agreement and any such stock power or powers and returned the same to the Company; the Company shall cause to be issued in the Holder's name a stock certificate or certificates representing the total number of shares of Stock subject to the Award. In lieu of issuing a certificate, at the discretion of the Company, shares may be allocated to the Holder's account in book‑entry form in a manner that effectively prevents transfers during the Restriction Period (as defined below).

2. Rights as a Stockholder. The Holder shall have the right to vote the shares of Stock subject to the Award and to receive dividends and other distributions thereon; provided, however, that a dividend or other distribution with respect to shares of Stock (including, without limitation, a stock dividend or stock split), other than a regular cash dividend, shall be subject to the same restrictions as the shares of Stock with respect to which such dividend or other distribution was made.

3. Custody and Delivery of Certificates Representing Shares. Unless the Company has allocated shares to the Holder's account pursuant to Section 1 hereof, the Company shall hold the certificate or certificates representing the shares of Stock subject to the Award until the restrictions on such Award shall have lapsed, in whole or in part, pursuant to Section 4 hereof. The Company shall as soon thereafter as practicable, subject to Section 5.3, deliver the certificate or certificates for such shares to the Holder and destroy any stock power or powers relating to such shares, if applicable. If such stock power or powers also relates to shares as to which restrictions remain in effect, the Company may require, as a condition precedent to delivery of any certificate pursuant to this Section 3, the execution and delivery to the Company of one or more stock powers relating to such shares. If the shares were allocated to the Holder's account in book‑entry form pursuant to Section 1 hereof, at the termination of the Restriction Period, the Company shall cause any restriction of transfer to be removed and shall cause to be issued in the Holder's name, a certificate representing the shares of stock for which restrictions have lapsed pursuant to Section 4 hereof and subject to Section 5.3 and deliver such certificate to the Holder.

4. “Restriction Period” and Vesting. The restrictions on the applicable portion of the Award shall lapse on _____________ the “Vest Date” specified in the Award Details if Holder continues service on the Board until such Vest Date.

5.Additional Terms and Conditions of Award.

5.1. Non-transferability of Award. During the Restriction Period, the shares of Stock subject to the Award as to which restrictions remain in effect may not be transferred by the Holder other than by will, the laws of descent and distribution or pursuant to beneficiary designation procedures approved by the Company. Except to the extent permitted by the foregoing, during the Restriction Period, the shares of Stock subject to the Award as to which restrictions remain in effect may not be sold, transferred, assigned, pledged, hypothecated, encumbered or otherwise disposed of (whether by operation of law or otherwise) or be subject to execution, attachment or similar process. Upon any attempt to so sell, transfer, assign, pledge, hypothecate or encumber, or otherwise dispose of such shares, the Award shall immediately become null and void.

5.2. Investment Representation. The Holder hereby represents and covenants that (a) any share of Stock acquired upon the lapse of restrictions will be acquired for investment and not with a view to the distribution thereof within the meaning of the Securities Act of 1933, as amended (the "Securities Act"), unless such acquisition has been registered under the Securities Act and any applicable state securities law; (b) any subsequent sale of any such shares shall be made either pursuant to an effective registration statement under the Securities Act and any applicable state securities laws, or pursuant to an exemption from registration under the Securities Act and such state securities laws; and (c) if requested by the Company, the Holder shall submit a written statement, in form satisfactory to the Company, to the effect that such representation (x) is true and correct as of the date of acquisition of any shares hereunder or (y) is true and correct as of the date of any sale of any such shares, as applicable. As a further condition precedent to the delivery to the Holder of any shares subject to the Award, the Holder shall comply with all regulations and requirements of any regulatory authority having control of or supervision over the issuance of the shares and, in connection therewith, shall execute any documents which the Board or any committee authorized by the Board shall in its sole discretion deem necessary or advisable.

5.3. Withholding Taxes. Not applicable.

5.4. Adjustment. In the event of any stock split, stock dividend, recapitalization, reorganization, merger, consolidation, combination, exchange of shares, liquidation, spin‑off or other similar change in capitalization or event, or any distribution to holders of Stock other than a regular cash dividend, the number and class of securities subject to the Award shall be appropriately adjusted by the Committee. If any adjustment would result in a fractional security being subject to the Award, the Company shall pay the Holder in connection with the vesting, if any, of such fractional security, an amount in cash determined by multiplying (i) such fraction (rounded to the nearest hundredth) by (ii) the Fair Market Value on the vesting date.

The decision of the Committee regarding any such adjustment shall be final, binding and conclusive.

5.5. Compliance with Applicable Law. The Award is subject to the condition that if the listing, registration or qualification of the shares subject to the Award upon any securities exchange or under any law, or the consent or approval of any governmental body, or the taking of any other action is necessary or desirable as a condition of, or in connection with, the vesting or delivery of shares hereunder, the shares of Stock subject to the Award may not be delivered, in whole or in part, unless such listing, registration, qualification, consent or approval shall have been effected or obtained, free of any conditions not acceptable to the Company. The Company agrees

to use reasonable efforts to effect or obtain any such listing, registration, qualification, consent or approval.

5.6. Decisions of Board or Committee. The Board or the Committee shall have the right to resolve all questions, which may arise in connection with the Award. Any interpretation, determination or other action made or taken by the Board or the Committee regarding the Plan or this Agreement shall be final, binding and conclusive.

5.7. Agreement Subject to the Plan. This Agreement is subject to the provisions of the Plan and shall be interpreted in accordance therewith. The Holder hereby acknowledges receipt of a copy of the Plan.

6.Miscellaneous Provisions.

6.1. Successors. This Agreement shall be binding upon and inure to the benefit of any successor or successors of the Company and any person or persons who shall, upon the death of the Holder, acquire any rights hereunder in accordance with this Agreement or the Plan.

6.2. Notices. All notices, requests or other communications provided for in this Agreement shall be made, if to the Company, to El Paso Electric Company, Stanton Tower, 100 N. Stanton, El Paso, Texas 79901, Attention: Corporate Secretary, and if to the Holder, to Holder’s Name at the last address provided to the Company. All notices, requests or other communications provided for in this Agreement shall be made in writing either (a) by personal delivery to the party entitled thereto, (b) by facsimile with confirmation of receipt, (c) by mailing in the United States mails to the last known address of the party entitled thereto or (d) by express courier service. The notice, request or other communication shall be deemed to be received upon personal delivery, upon confirmation of receipt of facsimile transmission, or upon receipt by the party entitled thereto if by United States mail or express courier service; provided, however, that if a notice, request or other communication is not received during regular business hours, it shall be deemed to be received on the next succeeding business day of the Company.

6.3. Governing Law. This Agreement, the Award and all determinations made and actions taken pursuant hereto and thereto, to the extent not otherwise governed by the laws of the United States, shall be governed by the laws of the State of Texas and construed in accordance therewith without giving effect to conflicts of laws principles.

6.4. Counterparts. This Agreement may be executed in two counterparts, each of which shall be deemed an original and both of which shall constitute one and the same instrument together, shall constitute one and the same instrument.

EL PASO ELECTRIC COMPANY

By:

Name:

Title: Chief Executive Officer

Accepted this ______ day of ____________, 20__.

EX-10.02

EL PASO ELECTRIC COMPANY

LONG-TERM INCENTIVE AWARD AGREEMENT

(FOR EMPLOYEES)

El Paso Electric Company, a Texas corporation (the "Company"), has granted to the Holder, under the El Paso Electric Company Amended and Restated 2007 Long-Term Incentive Plan (the “Plan”), a restricted stock award (the "Award") of a number of shares of the Company's Common Stock, no par value ("Stock"), upon and subject to the restrictions, terms and conditions set forth below. Capitalized terms not defined herein shall have the meanings specified in the Plan.

1. Award Details; Acceptance of Agreement.

The Award shall be null and void unless the Holder shall (a) accept this Agreement by executing it in the space provided below and returning it to the Company and (b) execute and return one or more irrevocable stock powers, if required by the Company. As soon as practicable after the Holder has executed this Agreement and any such stock power or powers and returned the same to the Company; the Company shall cause to be issued in the Holder's name a stock certificate or certificates representing the total number of shares of Stock subject to the Award. In lieu of issuing a certificate, at the discretion of the Company, shares may be allocated to the Holder's account in book‑entry form in a manner that effectively prevents transfers during the Restriction Period (as defined below).

2. Rights as a Stockholder. The Holder shall have the right to vote the shares of Stock subject to the Award and to receive dividends and other distributions thereon; provided, however, that a dividend or other distribution with respect to shares of Stock (including, without limitation, a stock dividend or stock split), other than a regular cash dividend, shall be subject to the same restrictions as the shares of Stock with respect to which such dividend or other distribution was made.

3. Custody and Delivery of Certificates Representing Shares. Unless the Company has allocated shares to the Holder's account pursuant to Section 1 hereof, the Company shall hold the certificate or certificates representing the shares of Stock subject to the Award until the restrictions on such Award shall have lapsed, in whole or in part, pursuant to Section 4 hereof. The Company shall as soon thereafter as practicable, subject to Section 5.3, deliver the certificate or certificates for such shares to the Holder and destroy any stock power or powers relating to such shares, if applicable. If such stock power or powers also relates to shares as to which restrictions remain in effect, the Company may require, as a condition precedent to delivery of any certificate pursuant to this Section 3, the execution and delivery to the Company of one or more stock powers relating to such shares. If the shares were allocated to the Holder's account in book‑entry form pursuant to Section 1 hereof, at the termination of the Restriction Period, the Company shall cause any restriction of transfer to be removed and shall cause to be issued in the Holder's name, a certificate representing the shares of stock for which restrictions have lapsed pursuant to Section 4 hereof and subject to Section 5.3 and deliver such certificate to the Holder.

4. “Restriction Period” and Vesting. The restrictions on the applicable portion of the Award shall lapse on the “Vest Date” specified in the Award Details if Holder remains employed by the Company on such Vest Date.

5.     Additional Terms and Conditions of Award.

5.1. Non-transferability of Award. During the Restriction Period, the shares of Stock subject to the Award as to which restrictions remain in effect may not be transferred by the Holder other than by will, the laws of descent and distribution or pursuant to beneficiary designation procedures approved by the Company. Except to the extent permitted by the foregoing, during the Restriction Period, the shares of Stock subject to the Award as to which restrictions remain in effect may not be sold, transferred, assigned, pledged, hypothecated, encumbered or otherwise disposed of (whether by operation of law or otherwise) or be subject to execution, attachment or similar process. Upon any attempt to so sell, transfer, assign, pledge, hypothecate or encumber, or otherwise dispose of such shares, the Award shall immediately become null and void.

5.2. Investment Representation. The Holder hereby represents and covenants that (a) any share of Stock acquired upon the lapse of restrictions will be acquired for investment and not with a view to the distribution thereof within the meaning of the Securities Act of 1933, as amended (the "Securities Act"), unless such acquisition has been registered under the Securities Act and any applicable state securities law; (b) any subsequent sale of any such shares shall be made either pursuant to an effective registration statement under the Securities Act and any applicable state securities laws, or pursuant to an exemption from registration under the Securities Act and such state securities laws; and (c) if requested by the Company, the Holder shall submit a written statement, in form satisfactory to the Company, to the effect that such representation (x) is true and correct as of the date of acquisition of any shares hereunder or (y) is true and correct as of the date of any sale of any such shares, as applicable. As a further condition precedent to the delivery to the Holder of any shares subject to the Award, the Holder shall comply with all regulations and requirements of any regulatory authority having control of or supervision over the issuance of the shares and, in connection therewith, shall execute any documents which the Board or any committee authorized by the Board shall in its sole discretion deem necessary or advisable.

5.3. Withholding Taxes. (a) As a condition precedent to the delivery to the Holder of any shares of Stock subject to the Award, the Holder may, upon request by the Company, pay to the Company such amount of cash as the Company may be required, under all applicable federal, state, local or other laws or regulations, to withhold and pay over as income or other withholding taxes (the "Required Tax Payments") with respect to the Award. If the Holder shall fail to advance the Required Tax Payments after request by the Company, the Company may, in its discretion, deduct any Required Tax Payments from any amount then or thereafter payable by the Company to the Holder.

(b)The Holder may elect to satisfy his or her obligation to advance the Required Tax Payments by any of the following means: (1) a cash payment to the Company pursuant to Section 5.3(a), (2) delivery to the Company of previously owned whole shares of Stock (which the Holder has held for at least six months prior to the delivery of such shares or which the Holder purchased on the open market and for which the Holder has good tide, free and clear of all liens and encumbrances) having a Fair Market Value, determined as of the date the obligation to withhold or pay taxes first arises in connection with the Award (the "Tax Date"), equal to the Required Tax Payments, (3) authorizing the Company to withhold from the shares of Stock otherwise to be delivered to the Holder pursuant to the Award, a number of whole shares of Stock having a Fair Market Value, determined as of the Tax Date, equal to the Required Tax Payments, (4) a cash payment by a broker‑dealer acceptable to the Company through whom the Holder has sold the shares with respect to which the Required Tax Payments have arisen or (5) any combination of

(1), (2) and (3). The Committee may disapprove an election pursuant to any of clauses (2)-(5) if the Committee determines, based on the opinion of recognized securities counsel, that the method so elected would result in liability to the Company under Section 16(b) of the Securities Exchange Act of 1934, as amended, or the regulations promulgated thereunder. Any fraction of a share of Stock which would be required to satisfy such an obligation shall be disregarded and the remaining amount due shall be paid in cash by the Holder. No certificate representing a share of Stock shall be delivered until the Required Tax Payments have been satisfied in full.

5.4. Adjustment. In the event of any stock split, stock dividend, recapitalization, reorganization, merger, consolidation, combination, exchange of shares, liquidation, spin‑off or other similar change in capitalization or event, or any distribution to holders of Stock other than a regular cash dividend, the number and class of securities subject to the Award shall be appropriately adjusted by the Committee. If any adjustment would result in a fractional security being subject to the Award, the Company shall pay the Holder in connection with the vesting, if any, of such fractional security, an amount in cash determined by multiplying (i) such fraction (rounded to the nearest hundredth) by (ii) the Fair Market Value on the vesting date.

The decision of the Committee regarding any such adjustment shall be final, binding and conclusive.

5.5. Compliance with Applicable Law. The Award is subject to the condition that if the listing, registration or qualification of the shares subject to the Award upon any securities exchange or under any law, or the consent or approval of any governmental body, or the taking of any other action is necessary or desirable as a condition of, or in connection with, the vesting or delivery of shares hereunder, the shares of Stock subject to the Award may not be delivered, in whole or in part, unless such listing, registration, qualification, consent or approval shall have been effected or obtained, free of any conditions not acceptable to the Company. The Company agrees to use reasonable efforts to effect or obtain any such listing, registration, qualification, consent or approval.

5.6. Decisions of Board or Committee. The Board or the Committee shall have the right to resolve all questions, which may arise in connection with the Award. Any interpretation, determination or other action made or taken by the Board or the Committee regarding the Plan or this Agreement shall be final, binding and conclusive.

5.7. Agreement Subject to the Plan. This Agreement is subject to the provisions of the Plan and shall be interpreted in accordance therewith. The Holder hereby acknowledges receipt of a copy of the Plan.

6.     Miscellaneous Provisions.

6.1. Successors. This Agreement shall be binding upon and inure to the benefit of any successor or successors of the Company and any person or persons who shall, upon the death of the Holder, acquire any rights hereunder in accordance with this Agreement or the Plan.

6.2. Notices. All notices, requests or other communications provided for in this Agreement shall be made, if to the Company, to El Paso Electric Company, Stanton Tower, 100 N. Stanton, El Paso, Texas 79901, Attention: Corporate Secretary, and if to the Holder, to Holder’s Name at the last address provided to the Company. All notices, requests or other communications provided for in this Agreement shall be made in writing either (a) by personal delivery to the party

entitled thereto, (b) by facsimile with confirmation of receipt, (c) by mailing in the United States mails to the last known address of the party entitled thereto or (d) by express courier service. The notice, request or other communication shall be deemed to be received upon personal delivery, upon confirmation of receipt of facsimile transmission, or upon receipt by the party entitled thereto if by United States mail or express courier service; provided, however, that if a notice, request or other communication is not received during regular business hours, it shall be deemed to be received on the next succeeding business day of the Company.

6.3. Governing Law. This Agreement, the Award and all determinations made and actions taken pursuant hereto and thereto, to the extent not otherwise governed by the laws of the United States, shall be governed by the laws of the State of Texas and construed in accordance therewith without giving effect to conflicts of laws principles.

6.4. Counterparts. This Agreement may be executed in two counterparts, each of which shall be deemed an original and both of which shall constitute one and the same instrument together, shall constitute one and the same instrument.

EL PASO ELECTRIC COMPANY

By:

Name:

Title: Chief Executive Officer

Accepted this ____ day of ______________, 20__.

EX-15

Exhibit 15

May 5, 2017

El Paso Electric Company

El Paso, Texas

Re: Registration Statement Nos. 333‑142557, 333-196628, and 333‑198989

With respect to the subject registration statements, we acknowledge our awareness of the use therein of our report dated May 5, 2017 related to our review of interim financial information.

Pursuant to Rule 436 under the Securities Act of 1933 (the Act), such report is not considered part of a registration statement prepared or certified by an independent registered public accounting firm, or a report prepared or certified by an independent registered public accounting firm within the meaning of Sections 7 and 11 of the Act.

Very truly yours,

/s/ KPMG LLP

Houston, Texas

EX-31.01

EXHIBIT 31.01

CERTIFICATIONS

I, Mary E. Kipp, certify that:

1. I have reviewed this quarterly report on Form 10-Q of El Paso Electric Company (the "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 Company as of, and for, the periods presented in this report;

4. The Company's other certifying officer(s) 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 Company 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 Company, 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 Company'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 Company's internal control over financial reporting that occurred during the Company's most recent fiscal quarter (the Company's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Company's internal control over financial reporting; and

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

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Company'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 Company's internal control over financial reporting.

Dated: May 5, 2017

EL PASO ELECTRIC COMPANY
By:	/s/ Mary E. Kipp
	Mary E. Kipp
	Chief Executive Officer
	(Principal Executive Officer)

I, Nathan T. Hirschi, certify that:

1. I have reviewed this annual report on Form 10-Q of El Paso Electric Company (the "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 Company as of, and for, the periods presented in this report;

4. The Company's other certifying officer(s) 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 Company 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 Company, 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 Company'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 Company's internal control over financial reporting that occurred during the Company's most recent fiscal quarter (the Company's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Company's internal control over financial reporting; and

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

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Company'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 Company's internal control over financial reporting.

Dated: May 5, 2017

EL PASO ELECTRIC COMPANY
By:	/s/ Nathan T. Hirschi
	Nathan T. Hirschi
	Senior Vice President -
	Chief Financial Officer
	(Principal Financial Officer)

EX-32.01

EXHIBIT 32.01

May 5, 2017

The certification set forth below is being submitted in connection with the Quarterly Report on Form 10-Q for the fiscal year ended March 31, 2017 (the "Report") of El Paso Electric Company (the "Company") for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934 (the "Exchange Act") and Section 1350 of Chapter 63 of Title 18 of the United States Code.

Mary E. Kipp and Nathan T. Hirschi, each certifies that, to the best of their knowledge:

1.the Report fully complies with the requirements of Section 13(a) or 15(d) of the Exchange Act; and

2. the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

 /s/ Mary E. Kipp

Mary E. Kipp

Chief Executive Officer

/s/ Nathan T. Hirschi

Nathan T. Hirschi

Senior Vice President -

Chief Financial Officer

XML

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2017	Apr. 30, 2017
Document and Entity Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q1
Trading Symbol	ee
Entity Registrant Name	EL PASO ELECTRIC CO /TX/
Entity Central Index Key	0000031978
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		40,557,782

XML

Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Utility plant:
Electric plant in service	$ 3,838,875	$ 3,791,566
Less accumulated depreciation and amortization	(1,267,633)	(1,244,332)
Net plant in service	2,571,242	2,547,234
Construction work in progress	159,326	154,738
Nuclear fuel; includes fuel in process of $68,908 and $57,315, respectively	206,391	194,842
Less accumulated amortization	(86,081)	(75,602)
Net nuclear fuel	120,310	119,240
Net utility plant	2,850,878	2,821,212
Current assets:
Cash and cash equivalents	5,166	8,420
Accounts receivable, principally trade, net of allowance for doubtful accounts of $1,716 and $2,156, respectively	84,845	88,452
Inventories, at cost	48,934	47,216
Under-collection of fuel revenues	2,519	11,123
Prepayments and other	10,445	8,988
Total current assets	151,909	164,199
Deferred charges and other assets:
Decommissioning trust funds	265,857	255,708
Regulatory assets	115,557	118,861
Other	16,463	16,298
Total deferred charges and other assets	397,877	390,867
Total assets	3,400,664	3,376,278
Capitalization:
Common stock, stated value $1 per share, 100,000,000 shares authorized, 65,660,750 and 65,685,615 shares issued, and 169,430 and 137,017 restricted shares, respectively	65,830	65,823
Capital in excess of stated value	323,188	322,643
Retained earnings	1,098,189	1,114,561
Accumulated other comprehensive loss, net of tax	(3,184)	(7,116)
Total stockholders' equity subtotal before treasury stock	1,484,023	1,495,911
Treasury stock, 25,271,652 and 25,304,914 shares, respectively, at cost	(420,961)	(421,515)
Common stock equity	1,063,062	1,074,396
Long-term debt, net of current portion	1,195,630	1,195,513
Total capitalization	2,258,692	2,269,909
Current liabilities:
Current maturities of long-term debt	83,206	83,143
Short-term borrowings under the revolving credit facility	134,178	81,574
Accounts payable, principally trade	45,812	62,953
Taxes accrued	26,944	32,488
Interest accrued	19,384	13,287
Over-collection of fuel revenues	181	255
Other	30,357	29,709
Total current liabilities	340,062	303,409
Deferred credits and other liabilities:
Accumulated deferred income taxes	548,491	555,066
Accrued pension liability	90,469	92,768
Accrued post-retirement benefit liability	35,083	34,400
Asset retirement obligation	86,882	81,800
Regulatory liabilities	20,113	18,435
Other	20,872	20,491
Total deferred credits and other liabilities	801,910	802,960
Commitments and contingencies
Total capitalization and liabilities	$ 3,400,664	$ 3,376,278

XML

Balance Sheets Parenthetical - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Nuclear fuel; fuel in process	$ 68,908	$ 57,315
Allowance for Doubtful Accounts Receivable, Current	$ 1,716	$ 2,156
Common Stock, Par or Stated Value Per Share	$ 1	$ 1
Common Stock, Shares Authorized	100,000,000	100,000,000
Common Stock, Shares, Issued	65,660,750	65,685,615
Common stock, restricted shares	169,430	137,017
Treasury Stock, Shares	25,271,652	25,304,914

XML

Statements Of Operations - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Operating revenues	$ 171,335	$ 157,809	$ 900,462	$ 843,932
Energy expenses:
Fuel	36,606	34,319	176,025	184,990
Purchased and interchanged power	13,673	9,646	63,754	52,016
Cost of services, energy services	50,279	43,965	239,779	237,006
Operating revenues net of energy expenses	121,056	113,844	660,683	606,926
Other operating expenses:
Other operations	56,123	58,387	239,750	245,738
Maintenance	20,990	17,515	70,221	67,178
Depreciation and amortization	21,934	23,293	82,958	91,552
Taxes other than income taxes	15,730	14,812	66,451	64,390
Utilities operating expense	114,777	114,007	459,380	468,858
Operating income (loss)	6,279	(163)	201,303	138,068
Other income (deductions):
Allowance for equity funds used during construction	815	2,336	5,502	8,700
Investment and interest income, net	3,986	2,929	15,140	15,183
Miscellaneous non-operating income	85	656	721	2,538
Miscellaneous non-operating deductions	(740)	(466)	(3,973)	(4,303)
Nonoperating income	4,146	5,455	17,390	22,118
Interest charges (credits):
Interest on long-term debt and revolving credit facility	18,367	16,599	73,312	65,967
Other interest	420	562	1,161	1,712
Capitalized interest	(1,294)	(1,242)	(5,042)	(4,921)
Allowance for borrowed funds used during construction	(791)	(1,658)	(4,116)	(5,974)
Interest expense	16,702	14,261	65,315	56,784
Income (loss) before income taxes	(6,277)	(8,969)	153,378	103,402
Income tax expense (benefit)	(2,288)	(3,161)	54,791	30,750
Net income (loss)	$ (3,989)	$ (5,808)	$ 98,587	$ 72,652
Basic earnings (loss) per share	$ (0.10)	$ (0.140)	$ 2.43	$ 1.80
Diluted earnings (loss) per share	(0.10)	(0.140)	2.43	1.80
Dividends declared per share of common stock	$ 0.31	$ 0.295	$ 1.24	$ 1.18
Weighted average number of shares outstanding	40,387,235	40,325,324	40,366,024	40,295,316
Weighted average number of shares and dilutive potential shares outstanding	40,387,235	40,325,324	40,435,689	40,332,140

XML

Statements Of Comprehensive Operations - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Net income (loss)	$ (3,989)	$ (5,808)	$ 98,587	$ 72,652
Unrecognized pension and post-retirement benefit costs:
Net gain (loss) arising during period	0	0	(20,053)	5,429
Prior service benefit	0	0	32,697	824
Reclassification adjustments included in net income for amortization of:
Prior service benefit	(2,416)	(1,666)	(8,157)	(6,577)
Net loss	1,694	1,223	5,436	7,595
Net unrealized gains/losses on marketable securities:
Net holding gains (losses) arising during period	7,721	2,190	13,975	(1,730)
Reclassification adjustments for net gains included in net income	(2,191)	(1,388)	(8,443)	(8,757)
Net losses on cash flow hedges:
Reclassification adjustment for interest expense included in net income	130	122	506	475
Total other comprehensive income (loss) before income taxes	4,938	481	15,961	(2,741)
Income tax benefit (expense) related to items of other comprehensive income (loss):
Unrecognized pension and post-retirement benefit costs	193	56	(4,124)	(2,899)
Net unrealized (gains) losses on marketable securities	(1,121)	(173)	(1,054)	2,099
Losses on cash flow hedges	(78)	(82)	(335)	(213)
Total income tax expense	(1,006)	(199)	(5,513)	(1,013)
Other comprehensive income (loss), net of tax	3,932	282	10,448	(3,754)
Comprehensive income (loss)	$ (57)	$ (5,526)	$ 109,035	$ 68,898

XML

Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income (loss)	$ (3,989)	$ (5,808)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of electric plant in service	21,934	23,293
Amortization of nuclear fuel	11,278	11,800
Deferred income taxes, net	(3,209)	(3,632)
Allowance for equity funds used during construction	(815)	(2,336)
Other amortization and accretion	4,988	4,250
Gain on sale of property, plant and equipment	0	(545)
Net gains on sale of decommissioning trust funds	(2,191)	(1,388)
Other operating activities	(165)	124
Change in:
Accounts receivable	8,663	8,296
Inventories	(1,638)	1,302
Net under/over-collection of fuel revenues	8,530	4,104
Prepayments and other	(2,494)	(2,975)
Accounts payable	(13,766)	(21,827)
Taxes accrued	(4,843)	(5,127)
Interest accrued	6,097	6,703
Other current liabilities	648	835
Deferred charges and credits	(2,896)	(3,134)
Net cash provided by operating activities	26,132	13,935
Cash flows from investing activities:
Cash additions to utility property, plant and equipment	(53,867)	(52,675)
Cash additions to nuclear fuel	(10,873)	(11,220)
Capitalized interest and AFUDC:
Utility property, plant and equipment	(1,606)	(3,994)
Nuclear fuel	(1,294)	(1,242)
Allowance for equity funds used during construction	815	2,336
Decommissioning trust funds:
Purchases, including funding of $1.1 million	(28,482)	(26,544)
Sales and maturities	26,055	24,078
Proceeds from sale of property, plant, and equipment	0	596
Other investing activities	506	(750)
Net cash used for investing activities	(68,746)	(69,415)
Cash flows from financing activities:
Dividends paid	(12,565)	(11,928)
Borrowings under the revolving credit facility:
Proceeds	128,339	97,655
Payments	(75,735)	(152,343)
Proceeds from issuance of senior notes	0	157,052
Other financing activities	(679)	(1,793)
Net cash provided by financing activities	39,360	88,643
Net increase (decrease) in cash and cash equivalents	(3,254)	33,163
Cash and cash equivalents at beginning of period	8,420	8,149
Cash and cash equivalents at end of period	$ 5,166	$ 41,312

XML

Statements Of Cash Flows Parenthetical - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Payments To Fund Decommissioning Fund	$ 1.1	$ 1.1

XML

Principles Of Preparation

3 Months Ended

Mar. 31, 2017

Accounting Policies [Abstract]

Principles Of Preparation

Principles of Preparation

These condensed financial statements should be read in conjunction with the financial statements and notes thereto in the Annual Report of El Paso Electric Company on Form 10-K for the fiscal year ended December 31, 2016 (the "2016 Form 10-K"). Capitalized terms used in this report and not defined herein have the meaning ascribed to such terms in the 2016 Form 10-K. In the opinion of the Company’s management, the accompanying financial statements contain all adjustments necessary to present fairly the financial position of the Company at March 31, 2017 and December 31, 2016; the results of its operations and comprehensive operations for the three and twelve months endedMarch 31, 2017 and 2016; and its cash flows for the three months endedMarch 31, 2017 and 2016. The results of operations and comprehensive operations for the three months ended March 31, 2017 and the cash flows for the three months endedMarch 31, 2017 are not necessarily indicative of the results to be expected for the full calendar year.

Pursuant to the rules and regulations of the Securities and Exchange Commission (the "SEC"), certain financial information has been condensed and certain footnote disclosures have been omitted. Such information and disclosures are normally included in financial statements prepared in accordance with generally accepted accounting principles.

Use of Estimates. The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and 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. The Company evaluates its estimates on an on-going basis, including those related to depreciation, unbilled revenue, income taxes, fuel costs, pension and other post-retirement obligations and asset retirement obligations ("ARO"). Actual results could differ from those estimates.

Revenues. Revenues related to the sale of electricity are generally recorded when service is provided or electricity is delivered to customers. The billing of electricity sales to retail customers is based on the reading of their meters, which occurs on a systematic basis throughout the month. Unbilled revenues are recorded for estimated amounts of energy delivered in the period following the customer's billing cycle to the end of the month. Unbilled revenues are estimated based on monthly generation volumes and by applying an average revenue/kWh to the number of estimated kWhs delivered but not billed. Accounts receivable included accrued unbilled revenues of $17.4 million at March 31, 2017 and $21.0 million at December 31, 2016. The Company presents revenues net of sales taxes in its statements of operations.

Depreciation. The Company routinely evaluates the depreciable service lives, cost of removal and salvage values of its property, plant and equipment. Depreciation is provided on a straight-line basis over the estimated remaining lives of the assets (ranging in average from 5 to 48 years). When property subject to composite depreciation is retired or otherwise disposed of in the normal course of business, its cost, together with the cost of removal, less salvage, is charged to accumulated depreciation. For other property dispositions, the applicable cost and accumulated depreciation is removed from the balance sheet accounts and a gain or loss is recognized. During 2016, depreciation and amortization decreased due to changes in depreciation rates approved in the most recent final orders from the Public Utility Commission of Texas ("PUCT") and the New Mexico Public Regulation Commission ("NMPRC") and changes in the estimated life of certain intangible software assets.

New Accounting Standards

In March 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-09, Compensation - Stock Compensation (Topic 718) Improvements to Employee Share-Based Payment Accounting to simplify the accounting for share-based payment transactions, including the income tax consequences, classification of awards either as equity or liabilities, and classification on the statements of cash flows. The Company adopted the new standard effective January 1, 2017. The adoption of the new standard did not have a material impact on the Company’s financial condition, results of operations or cash flows. The cumulative effect of the adoption of the new standard was to increase net operating loss carryforward deferred tax assets and retained earnings by $0.2 million on January 1, 2017.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) to provide a framework that replaces the existing revenue recognition guidance, and has since modified the standard with several ASUs.The standard provides that an entity should recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. More specifically, the standard requires entities to recognize revenue through the application of a five-step model, which includes the: (i) identification of the contract; (ii) identification of the performance obligations; (iii) determination of the transaction price; (iv) allocation of the transaction price to the performance obligations; and (v) the recognition of revenue as the entity satisfies the performance obligations. The Company plans to adopt the new standard for reporting periods beginning after December 15, 2017. The Company has not concluded which transition method it will elect but it currently anticipates using the modified retrospective approach.

The Company is currently in the process of evaluating the impact of the new standard on its various revenue and cash flow streams, including the evaluation of the impact, if any, on changes to business processes, systems and controls to support recognition and disclosure under the new guidance. Tariff sales to customers are determined to be in the scope of the new standard and represent a significant portion of the Company’s total operating revenues. The Company has not completed its final evaluation of tariff sales under the new guidance. Further, the Company is still considering the impact of guidance on several industry-related accounting issues, including the accounting for contributions in aid of construction ("CIAC"), assessing the collectability criterion and the presentation of revenues associated with alternative revenue programs. The Company's initial assessments may change as it executes its implementation plan and new guidance is provided by the American Institute of Certified Public Accountants Power and Utilities Industry Task Force.

In January 2016, the FASB issued ASU 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Liabilities to enhance the reporting model for financial instruments by addressing certain aspects of recognition, measurement, presentation, and disclosure. ASU 2016-01 generally requires entities to measure equity investments that do not result in consolidation and are not accounted for under the equity method at fair value and recognize any changes in fair value in net income. The guidance for classifying and measuring investments in debt securities and loans is not changed by this ASU, but requires entities to record changes in other comprehensive income. Financial assets and financial liabilities must be separately presented by measurement category on the balance sheet or in the accompanying notes to the financial statements. ASU 2016-01 clarifies the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity's other deferred tax assets. The provisions of this ASU become effective for reporting periods beginning after December 15, 2017. Upon adoption of the new standard, the Company expects to record the cumulative effects as of January 1, 2018 which will result in an adjustment to accumulated other comprehensive income (losses) and retained earnings for unrealized gains (losses) related to equity securities owned by the Company. The Company is continuing to assess the future impact of this ASU.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and requiring qualitative and quantitative disclosures on leasing agreements. ASU 2016-02 maintains a distinction between finance leases and operating leases similar to the distinction under previous leases guidance for capital leases and operating leases. The impact of leases reported in the Company's operating results and statement of cash flows are expected to be similar to previous Generally Accepted Accounting Principles ("GAAP"). ASU 2016-02 requires the recognition in the statement of financial position, by the lessee, of a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. How leases are recorded in regard to financial position represents a significant change from previous GAAP guidance. The lessee is permitted to make an accounting policy election to not recognize lease assets and lease liabilities for short-term leases. Implementation of the standard will be required for reporting periods beginning after December 15, 2018. Adoption of the new lease accounting standard will require the Company to apply the new standard to the earliest period using a modified retrospective approach. The Company is currently in the process of evaluating the impact of the new standard, including the evaluation of the impact, if any, on changes to business processes, systems and controls to support recognition and disclosure under the new guidance, however, at this time is unable to determine the impact this standard will have on the financial statements and related disclosures.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326) ("ASU 2016-13"). ASU 2016-13 changes how companies measure and recognize credit impairment for many financial assets. The new current expected credit loss model will require companies to immediately recognize an estimate of credit losses expected to occur over the remaining life of the financial assets that are in the scope of the standard. The ASU also makes targeted amendments to the current impairment model for available-for-sale debt securities. The provisions of ASU 2016-13 will be required for reporting periods beginning after December 15, 2019. ASU 2016-13 will be applied in a modified-retrospective approach through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is implemented. The Company is currently assessing the future impact of ASU 2016-13.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230) Classification of Certain Cash Receipts and Cash Payments to reduce diversity in practice in how certain cash receipts and cash payments are classified in the statement of cash flows. The provisions of ASU 2016-15 will be required for reporting periods beginning after December 15, 2017. ASU 2016-15 will be applied using a retrospective transition method to each period presented. If it is impracticable to apply ASU 2016-15 retrospectively for some of the issues, the amendments for those issues may be applied prospectively as of the earliest date practicable. The Company is currently assessing the future impact of this ASU.

In March 2017, the FASB issued ASU 2017-07, Compensation-Retirement Benefits (Topic 715) Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. ASU 2017-07 amends ASC 715, Compensation - Retirement Benefits, to require companies to present the service cost component of net benefit cost in the income statement line items where compensation cost is reported. Companies will present all other components of net benefit cost separately from the line item(s) that includes the service cost and outside of any subtotal of operating income. In addition, only the service cost component will be eligible for capitalization in assets. The amendments of ASU 2017-07 will be required for reporting periods beginning after December 15, 2017. The amendments in ASU 2017-07 should be applied retrospectively for the income statement presentation of the service cost component and the other components of net benefit costs and prospectively, on and after the effective date, for the capitalization of the service cost component. The Company is currently assessing the future impact of this ASU.

In March 2017, the FASB issued ASU 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20), Premium Amortization on Purchased Callable Debt Securities. ASU 2017-08 requires the premium on callable debt securities to be amortized to the earliest call date, contrary to current GAAP, which requires entities to amortize the premium over the contractual life of the instrument. The amendments of ASU 2017-08 do not require an accounting change for securities purchased at a discount; the discount continues to be amortized to maturity. The amendments of ASU 2017-08 will be required for reporting periods beginning after December 15, 2018. ASU 2017-08 will be applied on a modified-retrospective approach through a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. The Company is currently assessing the future impact of ASU 2017-08.

Supplemental Cash Flow Disclosures (in thousands)
		Three Months Ended
		March 31,
		2017			2016
Cash paid (received) for:
	Interest on long-term debt and borrowings under the revolving credit facility	$	11,721		$	10,666
	Income tax paid (refunded), net	(697		)	66
Non-cash investing and financing activities:
	Plant additions insurance reimbursement	5,056			—
	Changes in accrued plant additions	(3,335		)	(5,882		)
	Grants of restricted shares of common stock	540			653

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Accumulated Other Comprehensive Income (Notes)

3 Months Ended

Mar. 31, 2017

Accumulated Other Comprehensive Income (Loss) [Line Items]

Comprehensive Income (Loss) Note

Accumulated Other Comprehensive Income (Loss)

Changes in Accumulated Other Comprehensive Income (Loss) (net of tax) by component are presented below (in thousands):
		Three Months Ended March 31, 2017												Three Months Ended March 31, 2016
		Unrecognized Pension and Post-retirement Benefit Costs			Net Unrealized Gains (Losses) on Marketable Securities			Net Losses on Cash Flow Hedges			Accumulated Other Comprehensive Income (Loss)			Unrecognized Pension and Post-retirement Benefit Costs			Net Unrealized Gains (Losses) on Marketable Securities			Net Losses on Cash Flow Hedges			Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period		$	(23,928	)	$	28,463		$	(11,651	)	$	(7,116	)	$	(29,869	)	$	27,765		$	(11,810	)	$	(13,914	)
	Other comprehensive income before reclassifications	—			6,165			—			6,165			—			1,742			—			1,742
	Amounts reclassified from accumulated other comprehensive income (loss)	(529		)	(1,756		)	52			(2,233		)	(387		)	(1,113		)	40			(1,460		)
Balance at end of period		$	(24,457	)	$	32,872		$	(11,599	)	$	(3,184	)	$	(30,256	)	$	28,394		$	(11,770	)	$	(13,632	)
		Twelve Months Ended March 31, 2017												Twelve Months Ended March 31, 2016
		Unrecognized Pension and Post-retirement Benefit Costs			Net Unrealized Gains (Losses) on Marketable Securities			Net Losses on Cash Flow Hedges			Accumulated Other Comprehensive Income (Loss)			Unrecognized Pension and Post-retirement Benefit Costs			Net Unrealized Gains (Losses) on Marketable Securities			Net Losses on Cash Flow Hedges			Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period		$	(30,256	)	$	28,394		$	(11,770	)	$	(13,632	)	$	(34,628	)	$	36,782		$	(12,032	)	$	(9,878	)
	Other comprehensive income (loss) before reclassifications	7,363			11,327			—			18,690			3,777			(1,335		)	—			2,442
	Amounts reclassified from accumulated other comprehensive income (loss)	(1,564		)	(6,849		)	171			(8,242		)	595			(7,053		)	262			(6,196		)
Balance at end of period		$	(24,457	)	$	32,872		$	(11,599	)	$	(3,184	)	$	(30,256	)	$	28,394		$	(11,770	)	$	(13,632	)

Amounts reclassified from Accumulated Other Comprehensive Income (Loss) for the three and twelve months ended March 31, 2017 and 2016 are as follows (in thousands):

Details about Accumulated Other Comprehensive Income (Loss) Components		Three Months Ended March 31,						Twelve Months Ended March 31,						Affected Line Item in the Statement of Operations
		2017			2016			2017			2016
Amortization of pension and post-retirement benefit costs:
	Prior service benefit	$	2,416		$	1,666		$	8,157		$	6,577		(a)
	Net loss	(1,694		)	(1,223		)	(5,436		)	(7,595		)	(a)
		722			443			2,721			(1,018		)	(a)
	Income tax effect	(193		)	(56		)	(1,157		)	423			Income tax expense (benefit)
		529			387			1,564			(595		)	Net income (loss)
Marketable securities:
	Net realized gain on sale of securities	2,191			1,388			8,443			8,757			Investment and interest income, net
		2,191			1,388			8,443			8,757			Income before income taxes
	Income tax effect	(435		)	(275		)	(1,594		)	(1,704		)	Income tax expense (benefit)
		1,756			1,113			6,849			7,053			Net income
Loss on cash flow hedge:
	Amortization of loss	(130		)	(122		)	(506		)	(475		)	Interest on long-term debt and revolving credit facility
		(130		)	(122		)	(506		)	(475		)	Income (loss) before income taxes
	Income tax effect	78			82			335			213			Income tax expense
		(52		)	(40		)	(171		)	(262		)	Net income (loss)
	Total reclassifications	$	2,233		$	1,460		$	8,242		$	6,196

(a) These items are included in the computation of net periodic benefit cost. See Note I, Employee Benefits, for additional information.

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Regulation

3 Months Ended

Mar. 31, 2017

Public Utilities, General Disclosures [Abstract]

Regulation

Regulation

General

The rates and services of the Company are regulated by incorporated municipalities in Texas, the PUCT, the NMPRC, and the Federal Energy Regulatory Commission ("FERC"). Municipal orders, ordinances and other agreements regarding rates and services adopted by Texas municipalities are subject to review and approval by the PUCT. The FERC has jurisdiction over the Company's wholesale (sales for resale) transactions, transmission service and compliance with federally-mandated reliability standards. The decisions of the PUCT, the NMPRC and the FERC are subject to judicial review.

Texas Regulatory Matters

2015 Texas Retail Rate Case Filing. On August 10, 2015, the Company filed with the City of El Paso, other municipalities incorporated in its Texas service territory, and the PUCT in Docket No. 44941, a request for an annual increase in non-fuel base revenues (the "2015 Texas Retail Rate Case").

On July 21, 2016, the parties to PUCT Docket No. 44941 filed the Joint Motion to Implement Uncontested Amended and Restated Stipulation and Agreement which was unopposed by the parties (the "Unopposed Settlement"). On August 25, 2016, the PUCT approved the Unopposed Settlement and issued its final order in Docket No. 44941 (the "PUCT Final Order"), as proposed. The PUCT Final Order provided for: (i) an annual non-fuel base rate increase, lower annual depreciation expense, a revised return on equity for allowance for funds used during construction ("AFUDC") purposes, and the inclusion of substantially all new plant in service in rate base; (ii) an additional annual non-fuel base rate increase of $3.7 million related to Four Corners Generating Station ("Four Corners") costs, which will be collected through a surcharge terminating on July 12, 2017; (iii) removing the separate rate treatment for residential customers with solar systems that the Company had proposed in its August 10, 2015 filing; (iv) allowing the Company to recover $3.1 million in rate case expenses through a separate surcharge and (v) allowing the Company to recover revenues associated with the relate back of rates to consumption on and after January 12, 2016 through March 31, 2016 through a separate surcharge.

Interim rates associated with the annual non-fuel base rate increase, became effective on April 1, 2016. The additional surcharges associated with the incremental Four Corners costs, rate case expenses and the relate back of rates to consumption on and after January 12, 2016 through March 31, 2016 were implemented on October 1, 2016.

For financial reporting purposes, the Company deferred any recognition of the Company's request in its 2015 Texas Retail Rate Case until it received the PUCT Final Order on August 25, 2016. Accordingly, it reported in the third quarter of 2016 the cumulative effect of the PUCT Final Order which related back to January 12, 2016.

2017 Texas Retail Rate Case Filing.On February 13, 2017, the Company filed with the City of El Paso, other municipalities incorporated in the Company's Texas service territory and the PUCT in Docket No. 46831, a request for an increase in non-fuel base revenues of approximately $42.5 million. The Company invoked its statutory right to have its new rates relate back for consumption on and after July 18, 2017, which is the 155th day after the filing. The difference in rates that would have been billed will be surcharged or refunded to customers after the PUCT's final order in Docket No. 46831. The PUCT has the authority to require the Company to surcharge or refund such difference over a period not to exceed 18 months. A procedural schedule has been adopted with a hearing scheduled in late August or early September 2017. The Company cannot predict the outcome or the timing of this rate case at this time.

Energy Efficiency Cost Recovery Factor. On May 1, 2017, the Company filed its annual application to establish its energy efficiency cost recovery factor for 2018. In addition to projected energy efficiency costs for 2018 and a true-up to prior year actual costs, the Company requested approval of a $1.0 million bonus for the 2016 energy efficiency program results in accordance with PUCT rules. The Company cannot predict the outcome or the timing of this matter at this time.

Fuel and Purchased Power Costs. On November 30, 2016, the Company filed a request, which was assigned PUCT Docket No. 46610, to increase its fixed fuel factor by approximately 28.8% to reflect increased fuel expenses primarily related to an increase in the price of natural gas used to generate power. The increase in the fixed fuel factor was effective on an interim basis January 1, 2017 and approved by the PUCT on January 10, 2017. As of March 31, 2017, the Company had under-recovered fuel costs in the amount of $2.5 million for the Texas jurisdiction.

Fuel Reconciliation Proceeding. On September 27, 2016, the Company filed an application with the PUCT, designated as PUCT Docket No. 46308, to reconcile $436.6 million of Texas fuel and purchased power expenses incurred during the period of April 1, 2013 through March 31, 2016. On March 31, 2017, the Company requested that the hearing set for April 5, 2017 be postponed until sometime after April 26, 2017 to allow for settlement discussions. The Company and parties to the proceeding have discussed terms of a settlement in principle to resolve the issues in the case, and the Company is currently drafting a stipulation and proposed order for filing with the State Office of Administrative Hearings. The Company expects the PUCT to consider the proposed settlement in the second quarter of 2017. The Company cannot predict the outcome or the timing of this matter. As of March 31, 2017, Texas jurisdictional fuel and purchased power costs subject to a future Texas fuel reconciliation are approximately $140.4 million.

Community Solar. On June 8, 2015, the Company filed a petition with the PUCT to initiate a community solar program that includes the construction and ownership of a 3 MW solar photovoltaic system located at Montana Power Station. Participation will be on a voluntary basis, and customers will contract for a set capacity (kW) amount and receive all energy produced. This case was assigned PUCT Docket No. 44800. The Company filed a settlement agreement among all parties on July 1, 2016 approving the program, and the PUCT approved the settlement agreement and program on September 1, 2016. The Community Solar facility is currently under construction and the Company expects completion of the solar facility and commencement of the program in the second quarter of 2017. On April 19, 2017, the Company announced that the entire 3 MW program was fully subscribed by approximately 1,500 Texas customers.

Four Corners Generating Station. On February 17, 2015, the Company and Arizona Public Service Company ("APS") entered into an asset purchase agreement (the "Purchase and Sale Agreement") providing for the sale of the Company's interest in Four Corners to APS. The sale of the Company's interest in Four Corners closed on July 6, 2016.

On June 10, 2015, the Company filed an application in Texas requesting reasonableness and public interest findings and certain rate and accounting findings related to the Purchase and Sale Agreement. This case was assigned PUCT Docket No. 44805. Subsequent to the filing of the application, the case has been subject to numerous procedural matters, including a March 23, 2016 order in which the PUCT determined not to dismiss the reasonableness and public interest issues in this docket but to consider the requested rate and accounting findings, including coal mine reclamation costs, in a rate case proceeding. On September 1, 2016, a motion by parties in the proceeding to suspend the procedural schedule in order to pursue settlement was approved. On March 3, 2017, the Company filed a Joint Motion to Implement Stipulation and Agreement, and commission Staff filed its recommendation that the Company’s disposition of its interest in Four Corners was reasonable and consistent with the public interest. A final order approving the Stipulation and Agreement was adopted by the PUCT on March 30, 2017.

At March 31, 2017, the regulatory asset associated with the Four Corners coal mine reclamation costs for the Company's Texas jurisdiction was approximately $7.1 million. Until otherwise determined, the Company will continue to recover its coal mine reclamation costs in Texas under previous orders and decisions of the PUCT. The Stipulation and Agreement also acknowledged an agreement among the parties related to the rate and accounting treatment of certain costs of Four Corners, including coal mine reclamation costs. Pursuant to the PUCT's order in PUCT Docket No. 44805, recovery of these costs will be addressed in future base rate and fuel-related proceedings. If the PUCT makes a determination that results in changes to how existing regulatory assets or previously incurred costs for Four Corners are recovered in rates, any such changes will be recognized for financial reporting purposes only when it becomes probable future cash flows will change as a result of such regulatory actions.

Other Required Approvals. The Company has obtained other required approvals for tariffs and approvals required by the Public Utility Regulatory Act (the "PURA") and the PUCT.

New Mexico Regulatory Matters

2015 New Mexico Rate Case Filing. On May 11, 2015, the Company filed a request with the NMPRC, in Case No. 15-00127-UT, for an annual increase in non-fuel base rates. On June 8, 2016, the NMPRC issued its final order in Case No. 15-00127-UT (the "NMPRC Final Order"), which approved an annual increase in non-fuel base rates of approximately $0.6 million, an increase of approximately $0.5 million in other service fees and a decrease in the Company's allowed return on equity to 9.48%. The NMPRC Final Order concluded that all of the Company's new plant in service was reasonable and necessary and therefore would be recoverable in rates. The Company's rates were approved by the NMPRC effective July 1, 2016 and implemented at such time.

2017 New Mexico Rate Case Filing. NMPRC Case No. 15-00109-UT required the Company to make a rate filing in New Mexico in the second quarter of 2017 using a historical test year ended December 31, 2016. On March 24, 2017, the Company, NMPRC Utility Division Staff and the New Mexico Attorney General filed a Joint Motion to Modify Filing Date Stated in Final Order requesting that the rate filing date be changed to no later than July 31, 2019, using the appropriate historical test year period. The joint request was approved by the NMPRC on April 12, 2017.

Fuel and Purchased Power Costs. Historically, fuel and purchased power costs were recovered through base rates and a Fuel and Purchased Power Cost Adjustment Clause ("FPPCAC") that accounts for changes in the costs of fuel relative to the amount included in base rates. Effective July 1, 2016, with the implementation of the final order in Case No. 15-00127-UT, fuel and purchased power costs are no longer recovered through base rates but are recovered through the FPPCAC. The Company's request to reconcile its fuel and purchased power costs for the period January 1, 2013 through December 31, 2014 was approved in Case No. 15-00127-UT. New Mexico jurisdictional costs subject to prudence review are costs from January 1, 2015 through March 31, 2017 that total approximately $127.5 million. At March 31, 2017, the Company had a net fuel over-recovery balance of approximately $0.2 million in New Mexico.

5 MW Holloman Air Force Base ("HAFB") Facility CCN. On October 7, 2015, in NMPRC Case No. 15-00185-UT, the NMPRC issued a final order approving a CCN for a 5 MW solar power generation facility located on HAFB in the Company's service territory in New Mexico. The Company and HAFB negotiated a special retail contract, which includes power sales agreement for the facility, to replace the existing load retention agreement which was approved by final order issued October 5, 2016 in NMPRC Case No. 16-00224-UT. Construction of the solar generation facility is expected to be completed in the fourth quarter of 2017 or early 2018.

New Mexico Efficient Use of Energy Recovery Factor. On July 1, 2016, the Company filed its annual application requesting approval of its 2017 Energy Efficiency and Load Management Plan and to establish energy efficiency cost recovery factors for 2017. In addition to projected energy efficiency costs for 2017, the Company requested approval of a $0.4 million incentive for 2017 energy efficiency programs in accordance with NMPRC rules. This case was assigned Case No. 16-00185-UT. On February 22, 2017, the NMPRC issued a Final Order approving the Company’s 2017 Energy Efficiency and Load Management Plan and authorizing recovery in 2017 of a base incentive of $0.4 million. The Company’s energy efficiency cost recovery factors were approved and effective in customer bills beginning on March 1, 2017. In addition, on July 1, 2016, the Company filed its 2015 Annual Report for Energy Efficiency Programs, which included an incentive for verified 2015 program performance of $0.3 million, which was approved in Case No. 13-00176-UT. The Company recorded the $0.3 million approved incentive in operating revenues in the first quarter of 2017.

Other Required Approvals. The Company has obtained other required approvals for other tariffs, securities transactions, recovery of energy efficiency costs through a base rate rider and other approvals as required by the NMPRC.

Federal Regulatory Matters

The Company has obtained required approvals for rates and tariffs, securities transactions and other approvals as required by the FERC.

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Palo Verde

3 Months Ended

Mar. 31, 2017

Palo Verde [Abstract]

Palo Verde

Palo Verde

Decommissioning. Pursuant to the ANPP Participation Agreement and federal law, the Company funds its share of the estimated costs to decommission Palo Verde Nuclear Generating Station ("Palo Verde") Units 1, 2 and 3, including the Common Facilities, through the term of their respective operating licenses and is required to maintain a minimum accumulation and funding level in its decommissioning account at the end of each annual reporting period during the life of the plant. The Company has established external trusts with an independent trustee, which enables the Company to record a current deduction for federal income tax purposes for most of the amounts funded. At March 31, 2017, the Company’s decommissioning trust fund had a balance of $265.9 million, which is above its minimum funding level. The Company monitors the status of its decommissioning funds and adjusts its deposits, if necessary.

Decommissioning costs are estimated every three years based upon engineering cost studies performed by outside engineers retained by APS. In April 2017, the Palo Verde Participants approved the 2016 Palo Verde decommissioning study (the “2016 Study”). The 2016 Study estimated that the Company must fund approximately $432.8 million (stated in 2016 dollars) to cover its share of decommissioning costs which was an increase in decommissioning costs of $52.1 million (stated in 2016 dollars) from the 2013 Palo Verde decommissioning study. The effect of this change increased the ARO by $3.1 million, which was recorded in the first quarter of 2017, and will increase annual expenses starting in April 2017. Although the 2016 Study was based on the latest available information, there can be no assurance that decommissioning cost estimates will not increase in the future or that regulatory requirements will not change. In addition, until a new low-level radioactive waste repository opens and operates for a number of years, estimates of the cost to dispose of low-level radioactive waste are subject to uncertainty. As provided in the ANPP Participation Agreement, the participants are required to conduct a new decommissioning study every three years. While the Company attempts to seek amounts in rates to meet its decommissioning obligations, it is not able to conclude given the evidence available to it now that it is probable these costs will continue to be collected over the period until decommissioning begins in 2044. The Company is ultimately responsible for these costs and its future actions combined with future decisions from regulators will determine how successful the Company is in this effort.

Spent Nuclear Fuel and Waste Disposal. Pursuant to the Nuclear Waste Policy Act of 1982, as amended in 1987 (the "NWPA"), the U.S. Department of Energy (the "DOE") is legally obligated to accept and dispose of all spent nuclear fuel and other high-level radioactive waste generated by all domestic power reactors by 1998. The DOE's obligations are reflected in a contract for Disposal of Spent Nuclear Fuel and/or High-Level Radioactive Waste (the "Standard Contract") with each nuclear power plant. The DOE failed to begin accepting spent nuclear fuel by 1998.

On October 31, 2014, APS, acting on behalf of itself and the Palo Verde Participants, submitted to the government a request for reimbursement of spent nuclear fuel storage costs for the period July 1, 2011 through June 30, 2014. The accepted claim amount was $42.0 million. On June 1, 2015, the Company received approximately $6.6 million, representing its share of the award, of which $5.8 million was credited to customers through the applicable fuel adjustment clauses in March 2015. After June 2015, APS will file annual claims for the period July 1 of the then-previous year to June 30 of the then-current year.

On November 2, 2015, APS filed a $12.0 million claim for the period July 1, 2014 through June 30, 2015. In February 2016, the DOE notified APS of the approval of the claim. In March 2016, the Company received its share of this claim of approximately $1.9 million, of which $1.6 million was credited to customers through the applicable fuel adjustment clauses.

On October 31, 2016, APS filed an $11.3 million claim for the period July 1, 2015 through June 30, 2016. On February 1, 2017, the DOE notified APS of the approval of the claim. On March 10, 2017, the Company received approximately $1.8 million, representing its share of the award, of which $1.4 million was credited to customers through the applicable fuel adjustment clauses.

Palo Verde Operations and Maintenance Expense. Included in other operations and maintenance expenses are expenses associated with Palo Verde as follows (in thousands):

	2017		2016
Three months ended March 31,	$	21,608	$	22,343
Twelve months ended March 31,	96,179		98,134

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Common Stock

3 Months Ended

Mar. 31, 2017

Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]

Shareholders' Equity and Share-based Payments, Including Earnings Per Share Information

Common Stock

Dividends. The Company paid $12.6 million and $11.9 million in quarterly cash dividends during the three months ended March 31, 2017 and 2016, respectively. The Company paid a total of $50.3 million and $47.7 million in quarterly cash dividends during the twelve months ended March 31, 2017 and 2016, respectively.

Basic and Diluted Earnings Per Share. The basic and diluted earnings per share are presented below (in thousands except for share data):
	Three Months Ended March 31,						Twelve Months Ended March 31,
	2017			2016			2017			2016
Weighted average number of common shares outstanding:
Basic number of common shares outstanding	40,387,235			40,325,324			40,366,024			40,295,316
Dilutive effect of unvested performance awards	—			—			69,665			36,824
Diluted number of common shares outstanding	40,387,235			40,325,324			40,435,689			40,332,140
Basic net income (loss) per common share:
Net income (loss)	$	(3,989	)	$	(5,808	)	$	98,587		$	72,652
Income allocated to participating restricted stock	(45		)	(32		)	(349		)	(209		)
Net income (loss) available to common shareholders	$	(4,034	)	$	(5,840	)	$	98,238		$	72,443
Diluted net income (loss) per common share:
Net income (loss)	$	(3,989	)	$	(5,808	)	$	98,587		$	72,652
Income reallocated to participating restricted stock	(45		)	(32		)	(349		)	(209		)
Net income (loss) available to common shareholders	$	(4,034	)	$	(5,840	)	$	98,238		$	72,443
Basic net income (loss) per common share:
Distributed earnings	$	0.31		$	0.295		$	1.24		$	1.18
Undistributed earnings (losses)	(0.41		)	(0.435		)	1.19			0.62
Basic net income (loss) per common share	$	(0.10	)	$	(0.140	)	$	2.43		$	1.80
Diluted net income (loss) per common share:
Distributed earnings	$	0.31		$	0.295		$	1.24		$	1.18
Undistributed earnings (losses)	(0.41		)	(0.435		)	1.19			0.62
Diluted net income (loss) per common share	$	(0.10	)	$	(0.140	)	$	2.43		$	1.80

The amount of restricted stock awards and performance shares at 100% performance level excluded from the calculation of the diluted number of common shares outstanding because their effect was antidilutive is presented below:
	Three Months Ended		Twelve Months Ended
	March 31,		March 31,
	2017	2016	2017	2016
Restricted stock awards	78,025	59,462	58,344	54,192
Performance shares (a)	—	62,995	47,246	49,183

(a) Certain performance shares were excluded from the computation of diluted earnings per share as no payouts would have been required based upon performance at the end of each corresponding period.

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Income Taxes

3 Months Ended

Mar. 31, 2017

Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]

Income Taxes

Income Taxes

The Company files income tax returns in the United States ("U.S.") federal jurisdiction and in the states of Texas, New Mexico and Arizona. The Company is no longer subject to tax examination by the taxing authorities in the federal, Arizona and New Mexico jurisdictions for years prior to 2012. The Company is currently under audit in Texas for tax years 2007 through 2011.

For the three months ended March 31, 2017 and 2016, the Company’s effective tax rate was 36.5% and 35.2%, respectively. For the twelve months ended March 31, 2017 and 2016, the Company's effective tax rate was 35.7% and 29.7%, respectively. The Company's effective tax rate for all periods differs from the federal statutory tax rate of 35.0% primarily due to capital gains in the decommissioning trusts which are taxed at the federal rate of 20.0%, the allowance for equity funds used during construction ("AEFUDC"), state taxes and the issue discussed in the following paragraph.

In the third quarter of 2016, the Company changed its accounting for state income taxes from the flow-through method to the normalization method in accordance with the PUCT's and NMPRC's most recent final orders. Under the flow-through method, the Company previously recorded deferred state income taxes and regulatory liabilities and assets offsetting such deferred state income taxes at the expected cash flow to be reflected in future rates. Upon implementation of normalization, the Company began amortizing the net regulatory asset for deferred state income taxes to deferred income tax expense over a 15 year period as allowed by the regulators. In the third quarter of 2016, the Company began recording deferred state income tax expense as required by normalization, retroactive to January 2016 as provided in the final orders. The impact of the change was additional deferred income tax expense of $1.0 million and $5.1 million for the three and twelve months endedMarch 31, 2017, respectively.

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Commitments, Contingencies And Uncertainties

3 Months Ended

Mar. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Commitments, Contingencies And Uncertainties

Commitments, Contingencies and Uncertainties

For a full discussion of commitments and contingencies, see Note K of the Notes to Financial Statements in the 2016 Form 10-K. In addition, see Notes C and D above and Notes C and E of the Notes to Financial Statements in the 2016 Form 10-K regarding matters related to wholesale power sales contracts and transmission contracts subject to regulation and Palo Verde, including decommissioning, spent nuclear fuel and waste disposal, and liability and insurance matters.

Power Purchase and Sale Contracts

To supplement its own generation and operating reserve requirements, and to meet required renewable portfolio standards, the Company engages in power purchase arrangements which may vary in duration and amount based on an evaluation of the Company's resource needs, the economics of the transactions, and specific renewable portfolio requirements. For a full discussion of power purchase and sale contracts that the Company has entered into with various counterparties, see Note K of the Notes to Financial Statements in the 2016 Form 10-K.

Environmental Matters

General. The Company is subject to extensive laws, regulations and permit requirements with respect to air and greenhouse gas ("GHG") emissions, water discharges, soil and water quality, waste management and disposal, natural resources and other environmental matters by federal, state, regional, tribal and local authorities. Failure to comply with such laws, regulations and requirements can result in actions by authorities or other third parties that might seek to impose on the Company administrative, civil and/or criminal penalties or other sanctions. In addition, releases of pollutants or contaminants into the environment can result in costly cleanup liabilities. These laws, regulations and requirements are subject to change through modification or reinterpretation, or the introduction of new laws and regulations and, as a result, the Company may face additional capital and operating costs to comply.

On March 28, 2017 the Company entered into a Compliance Agreement (the “Compliance Agreement”) with the Texas Commission on Environmental Quality under the Texas Environmental, Health and Safety Audit Privilege Act to address certain water and waste compliance issues associated with the integrity of the synthetic liner of the evaporation pond at the Company’s Newman Generating Station. The Company's action plan will be implemented over the three year period of the Compliance Agreement starting in the second quarter of 2017. The Company is currently evaluating the cost of performing its obligations under the Compliance Agreement.

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Litigation

3 Months Ended

Mar. 31, 2017

Litigation [Abstract]

Litigation Matters Disclosure

Litigation

The Company is involved in various legal, environmental, tax and regulatory proceedings before various courts, regulatory commissions and governmental agencies regarding matters arising in the ordinary course of business. In many of these matters, the Company has excess casualty liability insurance that covers the various claims, actions and complaints. The Company regularly analyzes current information and, as necessary, makes provisions in its financial statements for probable liabilities for the eventual disposition of these matters. While the outcome of these matters cannot be predicted with certainty, based upon a review of the matters and applicable insurance coverage, the Company believes that none of these matters will have a material adverse effect on the financial position, results of operations or cash flows of the Company. The Company expenses legal costs, including expenses related to loss contingencies, as they are incurred.

See Notes C and G above and Notes C and K of the Notes to Financial Statements in the 2016 Form 10-K for discussion of the effects of government legislation and regulation on the Company.

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Employee Benefits

3 Months Ended

Mar. 31, 2017

General Discussion of Pension and Other Postretirement Benefits [Abstract]

Employee Benefits

Employee Benefits

Retirement Plans

The net periodic benefit cost recognized for the three and twelve months endedMarch 31, 2017 and 2016 is made up of the components listed below as determined using the projected unit credit actuarial cost method (in thousands):

	Three Months Ended						Twelve Months Ended
	March 31,						March 31,
	2017			2016			2017			2016
Components of net periodic benefit cost:
Service cost	$	2,270		$	1,905		$	8,366		$	8,597
Interest cost	3,248			3,265			13,022			14,135
Expected return on plan assets	(4,808		)	(4,712		)	(18,975		)	(19,560		)
Amortization of:
Net loss	2,089			1,888			7,540			9,785
Prior service benefit	(878		)	(878		)	(3,506		)	(3,496		)
Net periodic benefit cost	$	1,921		$	1,468		$	6,447		$	9,461

During the three months endedMarch 31, 2017, the Company contributed $3.0 million of its projected $10.0 million2017 annual contribution to its retirement plans.

Other Postretirement Benefits

The net periodic benefit recognized for the three and twelve months endedMarch 31, 2017 and 2016 is made up of the components listed below (in thousands):

	Three Months Ended						Twelve Months Ended
	March 31,						March 31,
	2017			2016			2017			2016
Components of net periodic benefit:
Service cost	$	588		$	715		$	2,642		$	3,294
Interest cost	678			873			2,972			3,883
Expected return on plan assets	(470		)	(460		)	(1,845		)	(2,005		)
Amortization of:
Prior service benefit	(1,538		)	(788		)	(4,651		)	(3,081		)
Net gain	(395		)	(665		)	(2,104		)	(2,190		)
Net periodic benefit	$	(1,137	)	$	(325	)	$	(2,986	)	$	(99	)

During the three months endedMarch 31, 2017, the Company contributed $0.1 million of its projected $1.5 million2017 annual contribution to its other postretirement benefits plan.

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Financial Instruments And Investments (Notes)

3 Months Ended

Mar. 31, 2017

Fair Value Disclosures [Abstract]

Financial Instruments and Investments

Financial Instruments and Investments

The FASB guidance requires the Company to disclose estimated fair values for its financial instruments. The Company has determined that cash and temporary investments, investment in debt securities, accounts receivable, decommissioning trust funds, long-term debt, short-term borrowings under the Revolving Credit Facility ("RCF"), accounts payable and customer deposits meet the definition of financial instruments. The carrying amounts of cash and temporary investments, accounts receivable, accounts payable and customer deposits approximate fair value because of the short maturity of these items. Investments in debt securities and decommissioning trust funds are carried at estimated fair value.

Long-Term Debt and Short-Term Borrowings Under the RCF. The fair values of the Company's long-term debt and short-term borrowings under the RCF are based on estimated market prices for similar issues and are presented below (in thousands):

	March 31, 2017				December 31, 2016
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Pollution Control Bonds	$	190,844	$	204,599	$	190,775	$	206,818
Senior Notes	993,170		1,126,625		993,086		1,112,285
RGRT Senior Notes (1)	94,822		98,555		94,795		98,855
RCF (1)	134,178		134,178		81,574		81,574
Total	$	1,413,014	$	1,563,957	$	1,360,230	$	1,499,532

_______________

(1) Nuclear fuel financing, as of March 31, 2017 and December 31, 2016, is funded through the $95 million Rio Grande Resources Trust ("RGRT") Senior Notes and $40.2 million and $37.6 million, respectively under the RCF. As of March 31, 2017, $94.0 million was outstanding under the RCF for working capital or general corporate purposes. As of December 31, 2016, $44.0 million was outstanding under the RCF for working capital or general corporate purposes. The interest rate on the Company's borrowings under the RCF is reset throughout the quarter reflecting current market rates. Consequently, the carrying value approximates fair value.

Marketable Securities.The Company's marketable securities, included in decommissioning trust funds in the Balance Sheets, are reported at fair value which was $265.9 million and $255.7 million at March 31, 2017 and December 31, 2016, respectively. These securities are classified as available for sale and recorded at their estimated fair value using the FASB guidance for certain investments in debt and equity securities. The reported fair values include gross unrealized losses on marketable securities whose impairment the Company has deemed to be temporary. The tables below present the gross unrealized losses and the fair value of these securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (in thousands):

	March 31, 2017
	Less than 12 Months					12 Months or Longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Description of Securities (1):
Federal Agency Mortgage Backed Securities	$	11,142	$	(249	)	$	424	$	(23	)	$	11,566	$	(272	)
U.S. Government Bonds	32,621		(739		)	9,876		(570		)	42,497		(1,309		)
Municipal Obligations	9,152		(298		)	4,413		(385		)	13,565		(683		)
Corporate Obligations	9,665		(131		)	2,491		(208		)	12,156		(339		)
Total Debt Securities	62,580		(1,417		)	17,204		(1,186		)	79,784		(2,603		)
Common Stock	541		(53		)	—		—			541		(53		)
Total Temporarily Impaired Securities	$	63,121	$	(1,470	)	$	17,204	$	(1,186	)	$	80,325	$	(2,656	)

_________________

(1) Includes 139 securities.

	December 31, 2016
	Less than 12 Months					12 Months or Longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Description of Securities (2):
Federal Agency Mortgage Backed Securities	$	11,582	$	(239	)	$	436	$	(22	)	$	12,018	$	(261	)
U.S. Government Bonds	31,655		(762		)	17,976		(835		)	49,631		(1,597		)
Municipal Obligations	9,596		(394		)	4,067		(372		)	13,663		(766		)
Corporate Obligations	7,971		(172		)	2,092		(172		)	10,063		(344		)
Total Debt Securities	60,804		(1,567		)	24,571		(1,401		)	85,375		(2,968		)
Common Stock	2,760		(167		)	—		—			2,760		(167		)
Institutional Equity Funds-International Equity	22,945		(110		)	—		—			22,945		(110		)
Total Temporarily Impaired Securities	$	86,509	$	(1,844	)	$	24,571	$	(1,401	)	$	111,080	$	(3,245	)

_________________

(2) Includes 152 securities.

The Company monitors the length of time specific securities trade below their cost basis along with the amount and percentage of the unrealized loss in determining if a decline in fair value of marketable securities below recorded cost is considered to be other than temporary. The Company recognizes impairment losses on certain of its securities deemed to be other than temporary. In accordance with the FASB guidance, these impairment losses are recognized in net income, and a lower cost basis is established for these securities. In addition, the Company will research the future prospects of individual securities as necessary. The Company does not anticipate expending monies held in trust before 2044 or a later period when decommissioning of Palo Verde begins.

For the three and twelve months ended March 31, 2017 and 2016, the Company recognized other than temporary impairment losses on its available-for-sale securities as follow (in thousands):

	Three Months Ended					Twelve Months Ended
	March 31,					March 31,
	2017		2016			2017			2016
Unrealized holding losses included in pre-tax income	$	—	$	(156	)	$	(196	)	$	(494	)

The reported securities also include gross unrealized gains on marketable securities which have not been recognized in the Company's net income. The table below presents the unrecognized gross unrealized gains and the fair value of these securities, aggregated by investment category (in thousands): 

	March 31, 2017				December 31, 2016
	Fair Value		Unrealized Gains		Fair Value		Unrealized Gains
Description of Securities:
Federal Agency Mortgage Backed Securities	$	6,991	$	276	$	7,430	$	319
U.S. Government Bonds	15,811		198		12,237		138
Municipal Obligations	4,086		144		2,481		144
Corporate Obligations	14,393		710		12,350		655
Total Debt Securities	41,281		1,328		34,498		1,256
Common Stock	62,487		34,868		61,884		34,066
Equity Mutual Funds	50,225		5,690		42,244		3,345
Institutional Funds - International Equity	24,737		1,722		—		—
Cash and Cash Equivalents	6,802		—		6,002		—
Total	$	185,532	$	43,608	$	144,628	$	38,667

The Company's marketable securities include investments in mortgage backed securities, municipal, corporate and federal debt obligations. The contractual year for maturity of these available-for-sale securities as of March 31, 2017 is as follows (in thousands):

	Total		2017		2018 through 2021		2022 through 2026		2027 and Beyond
Municipal Debt Obligations	$	17,651	$	804	$	6,366	$	9,203	$	1,278
Corporate Debt Obligations	26,549		—		10,110		7,511		8,928
U.S. Government Bonds	58,308		5,928		27,123		14,834		10,423
Federal Agency Mortgage Backed Securities	18,557		—		6		356		18,195

The Company's marketable securities in its decommissioning trust funds are sold from time to time and the Company uses the specific identification basis to determine the amount to reclassify from accumulated other comprehensive income into net income. The proceeds from the sale of these securities during the three and twelve months ended March 31, 2017 and 2016 and the related effects on pre-tax income are as follows (in thousands):

	Three Months Ended						Twelve Months Ended
	March 31,						March 31,
	2017			2016			2017			2016
Proceeds from sales or maturities of available-for-sale securities	$	26,055		$	24,078		$	93,245		$	102,003
Gross realized gains included in pre-tax income	$	2,587		$	1,832		$	9,968		$	10,429
Gross realized losses included in pre-tax income	(396		)	(288		)	(1,329		)	(1,178		)
Gross unrealized losses included in pre-tax income	—			(156		)	(196		)	(494		)
Net gains included in pre-tax income	$	2,191		$	1,388		$	8,443		$	8,757
Net unrealized holding gains (losses) included in accumulated other comprehensive income	$	7,721		$	2,190		$	13,975		$	(1,730	)
Net gains reclassified from accumulated other comprehensive income	(2,191		)	(1,388		)	(8,443		)	(8,757		)
Net gains (losses) in other comprehensive income	$	5,530		$	802		$	5,532		$	(10,487	)

Fair Value Measurements. The FASB guidance requires the Company to provide expanded quantitative disclosures for financial assets and liabilities recorded on the balance sheet at fair value. Financial assets carried at fair value include the Company's decommissioning trust investments and investments in debt securities which are included in deferred charges and other assets on the Balance Sheets. The Company has no liabilities that are measured at fair value on a recurring basis. The FASB guidance establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three levels as follows:

• Level 1 – Observable inputs that reflect quoted market prices for identical assets and liabilities in active markets. Financial assets utilizing Level 1 inputs include the nuclear decommissioning trust investments in active exchange-traded equity securities, mutual funds and U.S. Treasury securities that are in a highly liquid and active market. The Institutional Funds are valued using the Net Asset Value ("NAV") provided by the administrator of the fund. The NAV price is quoted on a restrictive market although the underlying investments are traded on active markets. During the third quarter of 2016, the Company concluded that the NAV used for determining the fair value of the Institutional Funds- International Equity investments have readily determinable fair values. Accordingly, such fund values have been re-categorized from Level 2 to Level 1 hierarchy.

• Level 2 – Inputs other than quoted market prices included in Level 1 that are observable for the asset or liability either directly or indirectly. Financial assets utilizing Level 2 inputs include the nuclear decommissioning trust investments in fixed income securities. The fair value of these financial instruments is based on evaluated prices that reflect observable market information, such as actual trade information of similar securities, adjusted for observable differences.

• Level 3 – Unobservable inputs using data that is not corroborated by market data and primarily based on internal Company analysis using models and various other analysis. Financial assets utilizing Level 3 inputs are the Company's investment in debt securities.

The securities in the Company's decommissioning trust funds are valued using prices and other relevant information generated by market transactions involving identical or comparable securities. The FASB guidance identifies this valuation technique as the "market approach" with observable inputs. The Company analyzes available-for-sale securities to determine if losses are other than temporary.

The fair value of the Company's decommissioning trust funds and investments in debt securities at March 31, 2017 and December 31, 2016, and the level within the three levels of the fair value hierarchy defined by the FASB guidance are presented in the table below (in thousands):

Description of Securities	Fair Value as of March 31, 2017		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Trading Securities:
Investments in Debt Securities	$	1,628	$	—	$	—	$	1,628
Available for sale:
U.S. Government Bonds	$	58,308	$	58,308	$	—	$	—
Federal Agency Mortgage Backed Securities	18,557		—		18,557		—
Municipal Obligations	17,651		—		17,651		—
Corporate Obligations	26,549		—		26,549		—
Subtotal, Debt Securities	121,065		58,308		62,757		—
Common Stock	63,028		63,028		—		—
Equity Mutual Funds	50,225		50,225		—		—
Institutional Funds-International Equity	24,737		24,737		—		—
Cash and Cash Equivalents	6,802		6,802		—		—
Total Available for Sale	$	265,857	$	203,100	$	62,757	$	—

Description of Securities	Fair Value as of December 31, 2016		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Trading Securities:
Investments in Debt Securities	$	1,421	$	—	$	—	$	1,421
Available for sale:
U.S. Government Bonds	$	61,868	$	61,868	$	—	$	—
Federal Agency Mortgage Backed Securities	19,448		—		19,448		—
Municipal Obligations	16,144		—		16,144		—
Corporate Obligations	22,413		—		22,413		—
Subtotal, Debt Securities	119,873		61,868		58,005		—
Common Stock	64,644		64,644		—		—
Equity Mutual Funds	42,244		42,244		—		—
Institutional Funds-International Equity	22,945		22,945		—		—
Cash and Cash Equivalents	6,002		6,002		—		—
Total Available for Sale	$	255,708	$	197,703	$	58,005	$	—

There were no transfers in or out of Level 1 and Level 2 fair value measurements categories due to changes in observable inputs during the three and twelve month periods ended March 31, 2017 and 2016. There were no purchases, sales, issuances, and settlements related to the assets in the Level 3 fair value measurement category during the three and twelve months endedMarch 31, 2017 and 2016.

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Principles Of Preparation (Policy)

3 Months Ended

Mar. 31, 2017

Accounting Policies [Abstract]

Use of Estimates, Policy

Use of Estimates. The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and 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. The Company evaluates its estimates on an on-going basis, including those related to depreciation, unbilled revenue, income taxes, fuel costs, pension and other post-retirement obligations and asset retirement obligations ("ARO"). Actual results could differ from those estimates.

Revenue Recognition, Policy

Revenues. Revenues related to the sale of electricity are generally recorded when service is provided or electricity is delivered to customers. The billing of electricity sales to retail customers is based on the reading of their meters, which occurs on a systematic basis throughout the month. Unbilled revenues are recorded for estimated amounts of energy delivered in the period following the customer's billing cycle to the end of the month. Unbilled revenues are estimated based on monthly generation volumes and by applying an average revenue/kWh to the number of estimated kWhs delivered but not billed. Accounts receivable included accrued unbilled revenues of $17.4 million at March 31, 2017 and $21.0 million at December 31, 2016. The Company presents revenues net of sales taxes in its statements of operations.

Depreciation, Depletion, and Amortization, Policy

Depreciation. The Company routinely evaluates the depreciable service lives, cost of removal and salvage values of its property, plant and equipment. Depreciation is provided on a straight-line basis over the estimated remaining lives of the assets (ranging in average from 5 to 48 years). When property subject to composite depreciation is retired or otherwise disposed of in the normal course of business, its cost, together with the cost of removal, less salvage, is charged to accumulated depreciation. For other property dispositions, the applicable cost and accumulated depreciation is removed from the balance sheet accounts and a gain or loss is recognized. During 2016, depreciation and amortization decreased due to changes in depreciation rates approved in the most recent final orders from the Public Utility Commission of Texas ("PUCT") and the New Mexico Public Regulation Commission ("NMPRC") and changes in the estimated life of certain intangible software assets.

New Accounting Standards, Policy

New Accounting Standards

In March 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-09, Compensation - Stock Compensation (Topic 718) Improvements to Employee Share-Based Payment Accounting to simplify the accounting for share-based payment transactions, including the income tax consequences, classification of awards either as equity or liabilities, and classification on the statements of cash flows. The Company adopted the new standard effective January 1, 2017. The adoption of the new standard did not have a material impact on the Company’s financial condition, results of operations or cash flows. The cumulative effect of the adoption of the new standard was to increase net operating loss carryforward deferred tax assets and retained earnings by $0.2 million on January 1, 2017.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) to provide a framework that replaces the existing revenue recognition guidance, and has since modified the standard with several ASUs.The standard provides that an entity should recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. More specifically, the standard requires entities to recognize revenue through the application of a five-step model, which includes the: (i) identification of the contract; (ii) identification of the performance obligations; (iii) determination of the transaction price; (iv) allocation of the transaction price to the performance obligations; and (v) the recognition of revenue as the entity satisfies the performance obligations. The Company plans to adopt the new standard for reporting periods beginning after December 15, 2017. The Company has not concluded which transition method it will elect but it currently anticipates using the modified retrospective approach.

The Company is currently in the process of evaluating the impact of the new standard on its various revenue and cash flow streams, including the evaluation of the impact, if any, on changes to business processes, systems and controls to support recognition and disclosure under the new guidance. Tariff sales to customers are determined to be in the scope of the new standard and represent a significant portion of the Company’s total operating revenues. The Company has not completed its final evaluation of tariff sales under the new guidance. Further, the Company is still considering the impact of guidance on several industry-related accounting issues, including the accounting for contributions in aid of construction ("CIAC"), assessing the collectability criterion and the presentation of revenues associated with alternative revenue programs. The Company's initial assessments may change as it executes its implementation plan and new guidance is provided by the American Institute of Certified Public Accountants Power and Utilities Industry Task Force.

In January 2016, the FASB issued ASU 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Liabilities to enhance the reporting model for financial instruments by addressing certain aspects of recognition, measurement, presentation, and disclosure. ASU 2016-01 generally requires entities to measure equity investments that do not result in consolidation and are not accounted for under the equity method at fair value and recognize any changes in fair value in net income. The guidance for classifying and measuring investments in debt securities and loans is not changed by this ASU, but requires entities to record changes in other comprehensive income. Financial assets and financial liabilities must be separately presented by measurement category on the balance sheet or in the accompanying notes to the financial statements. ASU 2016-01 clarifies the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity's other deferred tax assets. The provisions of this ASU become effective for reporting periods beginning after December 15, 2017. Upon adoption of the new standard, the Company expects to record the cumulative effects as of January 1, 2018 which will result in an adjustment to accumulated other comprehensive income (losses) and retained earnings for unrealized gains (losses) related to equity securities owned by the Company. The Company is continuing to assess the future impact of this ASU.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and requiring qualitative and quantitative disclosures on leasing agreements. ASU 2016-02 maintains a distinction between finance leases and operating leases similar to the distinction under previous leases guidance for capital leases and operating leases. The impact of leases reported in the Company's operating results and statement of cash flows are expected to be similar to previous Generally Accepted Accounting Principles ("GAAP"). ASU 2016-02 requires the recognition in the statement of financial position, by the lessee, of a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. How leases are recorded in regard to financial position represents a significant change from previous GAAP guidance. The lessee is permitted to make an accounting policy election to not recognize lease assets and lease liabilities for short-term leases. Implementation of the standard will be required for reporting periods beginning after December 15, 2018. Adoption of the new lease accounting standard will require the Company to apply the new standard to the earliest period using a modified retrospective approach. The Company is currently in the process of evaluating the impact of the new standard, including the evaluation of the impact, if any, on changes to business processes, systems and controls to support recognition and disclosure under the new guidance, however, at this time is unable to determine the impact this standard will have on the financial statements and related disclosures.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326) ("ASU 2016-13"). ASU 2016-13 changes how companies measure and recognize credit impairment for many financial assets. The new current expected credit loss model will require companies to immediately recognize an estimate of credit losses expected to occur over the remaining life of the financial assets that are in the scope of the standard. The ASU also makes targeted amendments to the current impairment model for available-for-sale debt securities. The provisions of ASU 2016-13 will be required for reporting periods beginning after December 15, 2019. ASU 2016-13 will be applied in a modified-retrospective approach through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is implemented. The Company is currently assessing the future impact of ASU 2016-13.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230) Classification of Certain Cash Receipts and Cash Payments to reduce diversity in practice in how certain cash receipts and cash payments are classified in the statement of cash flows. The provisions of ASU 2016-15 will be required for reporting periods beginning after December 15, 2017. ASU 2016-15 will be applied using a retrospective transition method to each period presented. If it is impracticable to apply ASU 2016-15 retrospectively for some of the issues, the amendments for those issues may be applied prospectively as of the earliest date practicable. The Company is currently assessing the future impact of this ASU.

In March 2017, the FASB issued ASU 2017-07, Compensation-Retirement Benefits (Topic 715) Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. ASU 2017-07 amends ASC 715, Compensation - Retirement Benefits, to require companies to present the service cost component of net benefit cost in the income statement line items where compensation cost is reported. Companies will present all other components of net benefit cost separately from the line item(s) that includes the service cost and outside of any subtotal of operating income. In addition, only the service cost component will be eligible for capitalization in assets. The amendments of ASU 2017-07 will be required for reporting periods beginning after December 15, 2017. The amendments in ASU 2017-07 should be applied retrospectively for the income statement presentation of the service cost component and the other components of net benefit costs and prospectively, on and after the effective date, for the capitalization of the service cost component. The Company is currently assessing the future impact of this ASU.

In March 2017, the FASB issued ASU 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20), Premium Amortization on Purchased Callable Debt Securities. ASU 2017-08 requires the premium on callable debt securities to be amortized to the earliest call date, contrary to current GAAP, which requires entities to amortize the premium over the contractual life of the instrument. The amendments of ASU 2017-08 do not require an accounting change for securities purchased at a discount; the discount continues to be amortized to maturity. The amendments of ASU 2017-08 will be required for reporting periods beginning after December 15, 2018. ASU 2017-08 will be applied on a modified-retrospective approach through a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. The Company is currently assessing the future impact of ASU 2017-08.

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Principles Of Preparation (Tables)

3 Months Ended

Mar. 31, 2017

Supplemental Cash Flow Information [Abstract]

Cash Flow, Supplemental Disclosures

Supplemental Cash Flow Disclosures (in thousands)
		Three Months Ended
		March 31,
		2017			2016
Cash paid (received) for:
	Interest on long-term debt and borrowings under the revolving credit facility	$	11,721		$	10,666
	Income tax paid (refunded), net	(697		)	66
Non-cash investing and financing activities:
	Plant additions insurance reimbursement	5,056			—
	Changes in accrued plant additions	(3,335		)	(5,882		)
	Grants of restricted shares of common stock	540			653

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Accumulated Other Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2017

Accumulated Other Comprehensive Income (Loss) [Line Items]

Schedule of Accumulated Other Comprehensive Income (Loss)

Changes in Accumulated Other Comprehensive Income (Loss) (net of tax) by component are presented below (in thousands):
		Three Months Ended March 31, 2017												Three Months Ended March 31, 2016
		Unrecognized Pension and Post-retirement Benefit Costs			Net Unrealized Gains (Losses) on Marketable Securities			Net Losses on Cash Flow Hedges			Accumulated Other Comprehensive Income (Loss)			Unrecognized Pension and Post-retirement Benefit Costs			Net Unrealized Gains (Losses) on Marketable Securities			Net Losses on Cash Flow Hedges			Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period		$	(23,928	)	$	28,463		$	(11,651	)	$	(7,116	)	$	(29,869	)	$	27,765		$	(11,810	)	$	(13,914	)
	Other comprehensive income before reclassifications	—			6,165			—			6,165			—			1,742			—			1,742
	Amounts reclassified from accumulated other comprehensive income (loss)	(529		)	(1,756		)	52			(2,233		)	(387		)	(1,113		)	40			(1,460		)
Balance at end of period		$	(24,457	)	$	32,872		$	(11,599	)	$	(3,184	)	$	(30,256	)	$	28,394		$	(11,770	)	$	(13,632	)
		Twelve Months Ended March 31, 2017												Twelve Months Ended March 31, 2016
		Unrecognized Pension and Post-retirement Benefit Costs			Net Unrealized Gains (Losses) on Marketable Securities			Net Losses on Cash Flow Hedges			Accumulated Other Comprehensive Income (Loss)			Unrecognized Pension and Post-retirement Benefit Costs			Net Unrealized Gains (Losses) on Marketable Securities			Net Losses on Cash Flow Hedges			Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period		$	(30,256	)	$	28,394		$	(11,770	)	$	(13,632	)	$	(34,628	)	$	36,782		$	(12,032	)	$	(9,878	)
	Other comprehensive income (loss) before reclassifications	7,363			11,327			—			18,690			3,777			(1,335		)	—			2,442
	Amounts reclassified from accumulated other comprehensive income (loss)	(1,564		)	(6,849		)	171			(8,242		)	595			(7,053		)	262			(6,196		)
Balance at end of period		$	(24,457	)	$	32,872		$	(11,599	)	$	(3,184	)	$	(30,256	)	$	28,394		$	(11,770	)	$	(13,632	)

Reclassification out of Accumulated Other Comprehensive Income

Amounts reclassified from Accumulated Other Comprehensive Income (Loss) for the three and twelve months ended March 31, 2017 and 2016 are as follows (in thousands):

Details about Accumulated Other Comprehensive Income (Loss) Components		Three Months Ended March 31,						Twelve Months Ended March 31,						Affected Line Item in the Statement of Operations
		2017			2016			2017			2016
Amortization of pension and post-retirement benefit costs:
	Prior service benefit	$	2,416		$	1,666		$	8,157		$	6,577		(a)
	Net loss	(1,694		)	(1,223		)	(5,436		)	(7,595		)	(a)
		722			443			2,721			(1,018		)	(a)
	Income tax effect	(193		)	(56		)	(1,157		)	423			Income tax expense (benefit)
		529			387			1,564			(595		)	Net income (loss)
Marketable securities:
	Net realized gain on sale of securities	2,191			1,388			8,443			8,757			Investment and interest income, net
		2,191			1,388			8,443			8,757			Income before income taxes
	Income tax effect	(435		)	(275		)	(1,594		)	(1,704		)	Income tax expense (benefit)
		1,756			1,113			6,849			7,053			Net income
Loss on cash flow hedge:
	Amortization of loss	(130		)	(122		)	(506		)	(475		)	Interest on long-term debt and revolving credit facility
		(130		)	(122		)	(506		)	(475		)	Income (loss) before income taxes
	Income tax effect	78			82			335			213			Income tax expense
		(52		)	(40		)	(171		)	(262		)	Net income (loss)
	Total reclassifications	$	2,233		$	1,460		$	8,242		$	6,196

(a) These items are included in the computation of net periodic benefit cost. See Note I, Employee Benefits, for additional information.

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Palo Verde (Tables)

3 Months Ended

Mar. 31, 2017

Palo Verde Generating Station

Palo Verde Operations & Maintenance Expenses [Line Items]

Operations & Maintenance Expenses

Palo Verde Operations and Maintenance Expense. Included in other operations and maintenance expenses are expenses associated with Palo Verde as follows (in thousands):

	2017		2016
Three months ended March 31,	$	21,608	$	22,343
Twelve months ended March 31,	96,179		98,134

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Common Stock (Tables)

3 Months Ended

Mar. 31, 2017

Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

Basic and Diluted Earnings Per Share. The basic and diluted earnings per share are presented below (in thousands except for share data):
	Three Months Ended March 31,						Twelve Months Ended March 31,
	2017			2016			2017			2016
Weighted average number of common shares outstanding:
Basic number of common shares outstanding	40,387,235			40,325,324			40,366,024			40,295,316
Dilutive effect of unvested performance awards	—			—			69,665			36,824
Diluted number of common shares outstanding	40,387,235			40,325,324			40,435,689			40,332,140
Basic net income (loss) per common share:
Net income (loss)	$	(3,989	)	$	(5,808	)	$	98,587		$	72,652
Income allocated to participating restricted stock	(45		)	(32		)	(349		)	(209		)
Net income (loss) available to common shareholders	$	(4,034	)	$	(5,840	)	$	98,238		$	72,443
Diluted net income (loss) per common share:
Net income (loss)	$	(3,989	)	$	(5,808	)	$	98,587		$	72,652
Income reallocated to participating restricted stock	(45		)	(32		)	(349		)	(209		)
Net income (loss) available to common shareholders	$	(4,034	)	$	(5,840	)	$	98,238		$	72,443
Basic net income (loss) per common share:
Distributed earnings	$	0.31		$	0.295		$	1.24		$	1.18
Undistributed earnings (losses)	(0.41		)	(0.435		)	1.19			0.62
Basic net income (loss) per common share	$	(0.10	)	$	(0.140	)	$	2.43		$	1.80
Diluted net income (loss) per common share:
Distributed earnings	$	0.31		$	0.295		$	1.24		$	1.18
Undistributed earnings (losses)	(0.41		)	(0.435		)	1.19			0.62
Diluted net income (loss) per common share	$	(0.10	)	$	(0.140	)	$	2.43		$	1.80

Schedule of Antidilutive Securities Excluded From Computation Of Earnings Per Share

The amount of restricted stock awards and performance shares at 100% performance level excluded from the calculation of the diluted number of common shares outstanding because their effect was antidilutive is presented below:
	Three Months Ended		Twelve Months Ended
	March 31,		March 31,
	2017	2016	2017	2016
Restricted stock awards	78,025	59,462	58,344	54,192
Performance shares (a)	—	62,995	47,246	49,183

(a) Certain performance shares were excluded from the computation of diluted earnings per share as no payouts would have been required based upon performance at the end of each corresponding period.

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Employee Benefits (Tables)

3 Months Ended

Mar. 31, 2017

Retirement Plans

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs

The net periodic benefit cost recognized for the three and twelve months endedMarch 31, 2017 and 2016 is made up of the components listed below as determined using the projected unit credit actuarial cost method (in thousands):

	Three Months Ended						Twelve Months Ended
	March 31,						March 31,
	2017			2016			2017			2016
Components of net periodic benefit cost:
Service cost	$	2,270		$	1,905		$	8,366		$	8,597
Interest cost	3,248			3,265			13,022			14,135
Expected return on plan assets	(4,808		)	(4,712		)	(18,975		)	(19,560		)
Amortization of:
Net loss	2,089			1,888			7,540			9,785
Prior service benefit	(878		)	(878		)	(3,506		)	(3,496		)
Net periodic benefit cost	$	1,921		$	1,468		$	6,447		$	9,461

Other Postretirement Benefit Plans

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs

The net periodic benefit recognized for the three and twelve months endedMarch 31, 2017 and 2016 is made up of the components listed below (in thousands):

	Three Months Ended						Twelve Months Ended
	March 31,						March 31,
	2017			2016			2017			2016
Components of net periodic benefit:
Service cost	$	588		$	715		$	2,642		$	3,294
Interest cost	678			873			2,972			3,883
Expected return on plan assets	(470		)	(460		)	(1,845		)	(2,005		)
Amortization of:
Prior service benefit	(1,538		)	(788		)	(4,651		)	(3,081		)
Net gain	(395		)	(665		)	(2,104		)	(2,190		)
Net periodic benefit	$	(1,137	)	$	(325	)	$	(2,986	)	$	(99	)

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Financial Instruments And Investments (Tables)

3 Months Ended

Mar. 31, 2017

Fair Value Disclosures [Abstract]

Fair Values Of Long-Term Debt And Short-Term Borrowings Under the RCF

The fair values of the Company's long-term debt and short-term borrowings under the RCF are based on estimated market prices for similar issues and are presented below (in thousands):

	March 31, 2017				December 31, 2016
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Pollution Control Bonds	$	190,844	$	204,599	$	190,775	$	206,818
Senior Notes	993,170		1,126,625		993,086		1,112,285
RGRT Senior Notes (1)	94,822		98,555		94,795		98,855
RCF (1)	134,178		134,178		81,574		81,574
Total	$	1,413,014	$	1,563,957	$	1,360,230	$	1,499,532

_______________

(1) Nuclear fuel financing, as of March 31, 2017 and December 31, 2016, is funded through the $95 million Rio Grande Resources Trust ("RGRT") Senior Notes and $40.2 million and $37.6 million, respectively under the RCF. As of March 31, 2017, $94.0 million was outstanding under the RCF for working capital or general corporate purposes. As of December 31, 2016, $44.0 million was outstanding under the RCF for working capital or general corporate purposes. The interest rate on the Company's borrowings under the RCF is reset throughout the quarter reflecting current market rates. Consequently, the carrying value approximates fair value.

Unrecognized Gross Unrealized Gains (Losses) And the Fair Value

The tables below present the gross unrealized losses and the fair value of these securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (in thousands):

	March 31, 2017
	Less than 12 Months					12 Months or Longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Description of Securities (1):
Federal Agency Mortgage Backed Securities	$	11,142	$	(249	)	$	424	$	(23	)	$	11,566	$	(272	)
U.S. Government Bonds	32,621		(739		)	9,876		(570		)	42,497		(1,309		)
Municipal Obligations	9,152		(298		)	4,413		(385		)	13,565		(683		)
Corporate Obligations	9,665		(131		)	2,491		(208		)	12,156		(339		)
Total Debt Securities	62,580		(1,417		)	17,204		(1,186		)	79,784		(2,603		)
Common Stock	541		(53		)	—		—			541		(53		)
Total Temporarily Impaired Securities	$	63,121	$	(1,470	)	$	17,204	$	(1,186	)	$	80,325	$	(2,656	)

_________________

(1) Includes 139 securities.

	December 31, 2016
	Less than 12 Months					12 Months or Longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Description of Securities (2):
Federal Agency Mortgage Backed Securities	$	11,582	$	(239	)	$	436	$	(22	)	$	12,018	$	(261	)
U.S. Government Bonds	31,655		(762		)	17,976		(835		)	49,631		(1,597		)
Municipal Obligations	9,596		(394		)	4,067		(372		)	13,663		(766		)
Corporate Obligations	7,971		(172		)	2,092		(172		)	10,063		(344		)
Total Debt Securities	60,804		(1,567		)	24,571		(1,401		)	85,375		(2,968		)
Common Stock	2,760		(167		)	—		—			2,760		(167		)
Institutional Equity Funds-International Equity	22,945		(110		)	—		—			22,945		(110		)
Total Temporarily Impaired Securities	$	86,509	$	(1,844	)	$	24,571	$	(1,401	)	$	111,080	$	(3,245	)

_________________

(2) Includes 152 securities.

Unrealized Holding Losses Included In Pre-Tax Income

For the three and twelve months ended March 31, 2017 and 2016, the Company recognized other than temporary impairment losses on its available-for-sale securities as follow (in thousands):

	Three Months Ended					Twelve Months Ended
	March 31,					March 31,
	2017		2016			2017			2016
Unrealized holding losses included in pre-tax income	$	—	$	(156	)	$	(196	)	$	(494	)

Marketable Securities Fair Value and Unrecognized Gross Unrealized Gain

The table below presents the unrecognized gross unrealized gains and the fair value of these securities, aggregated by investment category (in thousands): 

	March 31, 2017				December 31, 2016
	Fair Value		Unrealized Gains		Fair Value		Unrealized Gains
Description of Securities:
Federal Agency Mortgage Backed Securities	$	6,991	$	276	$	7,430	$	319
U.S. Government Bonds	15,811		198		12,237		138
Municipal Obligations	4,086		144		2,481		144
Corporate Obligations	14,393		710		12,350		655
Total Debt Securities	41,281		1,328		34,498		1,256
Common Stock	62,487		34,868		61,884		34,066
Equity Mutual Funds	50,225		5,690		42,244		3,345
Institutional Funds - International Equity	24,737		1,722		—		—
Cash and Cash Equivalents	6,802		—		6,002		—
Total	$	185,532	$	43,608	$	144,628	$	38,667

Contractual Year For Maturity Of Available-For-Sale Securities

The contractual year for maturity of these available-for-sale securities as of March 31, 2017 is as follows (in thousands):

	Total		2017		2018 through 2021		2022 through 2026		2027 and Beyond
Municipal Debt Obligations	$	17,651	$	804	$	6,366	$	9,203	$	1,278
Corporate Debt Obligations	26,549		—		10,110		7,511		8,928
U.S. Government Bonds	58,308		5,928		27,123		14,834		10,423
Federal Agency Mortgage Backed Securities	18,557		—		6		356		18,195

Sale of Securities And The Related Effects On Pre-Tax Income

The proceeds from the sale of these securities during the three and twelve months ended March 31, 2017 and 2016 and the related effects on pre-tax income are as follows (in thousands):

	Three Months Ended						Twelve Months Ended
	March 31,						March 31,
	2017			2016			2017			2016
Proceeds from sales or maturities of available-for-sale securities	$	26,055		$	24,078		$	93,245		$	102,003
Gross realized gains included in pre-tax income	$	2,587		$	1,832		$	9,968		$	10,429
Gross realized losses included in pre-tax income	(396		)	(288		)	(1,329		)	(1,178		)
Gross unrealized losses included in pre-tax income	—			(156		)	(196		)	(494		)
Net gains included in pre-tax income	$	2,191		$	1,388		$	8,443		$	8,757
Net unrealized holding gains (losses) included in accumulated other comprehensive income	$	7,721		$	2,190		$	13,975		$	(1,730	)
Net gains reclassified from accumulated other comprehensive income	(2,191		)	(1,388		)	(8,443		)	(8,757		)
Net gains (losses) in other comprehensive income	$	5,530		$	802		$	5,532		$	(10,487	)

Fair Value, Measurement Inputs, Disclosure

The fair value of the Company's decommissioning trust funds and investments in debt securities at March 31, 2017 and December 31, 2016, and the level within the three levels of the fair value hierarchy defined by the FASB guidance are presented in the table below (in thousands):

Description of Securities	Fair Value as of March 31, 2017		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Trading Securities:
Investments in Debt Securities	$	1,628	$	—	$	—	$	1,628
Available for sale:
U.S. Government Bonds	$	58,308	$	58,308	$	—	$	—
Federal Agency Mortgage Backed Securities	18,557		—		18,557		—
Municipal Obligations	17,651		—		17,651		—
Corporate Obligations	26,549		—		26,549		—
Subtotal, Debt Securities	121,065		58,308		62,757		—
Common Stock	63,028		63,028		—		—
Equity Mutual Funds	50,225		50,225		—		—
Institutional Funds-International Equity	24,737		24,737		—		—
Cash and Cash Equivalents	6,802		6,802		—		—
Total Available for Sale	$	265,857	$	203,100	$	62,757	$	—

Description of Securities	Fair Value as of December 31, 2016		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Trading Securities:
Investments in Debt Securities	$	1,421	$	—	$	—	$	1,421
Available for sale:
U.S. Government Bonds	$	61,868	$	61,868	$	—	$	—
Federal Agency Mortgage Backed Securities	19,448		—		19,448		—
Municipal Obligations	16,144		—		16,144		—
Corporate Obligations	22,413		—		22,413		—
Subtotal, Debt Securities	119,873		61,868		58,005		—
Common Stock	64,644		64,644		—		—
Equity Mutual Funds	42,244		42,244		—		—
Institutional Funds-International Equity	22,945		22,945		—		—
Cash and Cash Equivalents	6,002		6,002		—		—
Total Available for Sale	$	255,708	$	197,703	$	58,005	$	—

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Principles Of Preparation (Accrued Unbilled Revenues) (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Accrued unbilled revenues	$ 17.4	$ 21.0

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Principles Of Preparation (Supplemental Cash Flow Disclosures) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Supplemental Cash Flow Information [Abstract]
Interest on long-term debt and borrowing under the revolving credit facility	$ 11,721	$ 10,666
Income tax paid (refunded), net	(697)	66
Plant additions insurance reimbursement	5,056	0
Changes in accrued plant additions	(3,335)	(5,882)
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants of restricted shares of common stock	$ 540	$ 653

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Principles Of Preparation (Depreciation) (Details)	3 Months Ended
	Mar. 31, 2017
Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	48 years

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Principles Of Preparation Narrative (Details) $ in Millions	Jan. 01, 2017 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in retained earnings	$ 0.2
Increase in operating loss carryforward deferred tax assets	$ 0.2

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Accumulated Other Comprehensive Income by Component (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
		Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), beginning balance		$ (7,116)
Accumulated Other Comprehensive Income (Loss), ending balance		(3,184)		$ (3,184)
Accumulated Defined Benefit Plans Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), beginning balance		(23,928)	$ (29,869)	(30,256)	$ (34,628)
Other Comprehensive Income (Loss) before Reclassifications		0	0	7,363	3,777
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	[1]	(529)	(387)	(1,564)	595
Accumulated Other Comprehensive Income (Loss), ending balance		(24,457)	(30,256)	(24,457)	(30,256)
Accumulated Net Unrealized Investment Gain (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), beginning balance		28,463	27,765	28,394	36,782
Other Comprehensive Income (Loss) before Reclassifications		6,165	1,742	11,327	(1,335)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)		(1,756)	(1,113)	(6,849)	(7,053)
Accumulated Other Comprehensive Income (Loss), ending balance		32,872	28,394	32,872	28,394
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), beginning balance		(11,651)	(11,810)	(11,770)	(12,032)
Other Comprehensive Income (Loss) before Reclassifications		0	0	0	0
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)		52	40	171	262
Accumulated Other Comprehensive Income (Loss), ending balance		(11,599)	(11,770)	(11,599)	(11,770)
Accumulated Other Comprehensive Income (Loss), Net of Tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), beginning balance		(7,116)	(13,914)	(13,632)	(9,878)
Other Comprehensive Income (Loss) before Reclassifications		6,165	1,742	18,690	2,442
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)		(2,233)	(1,460)	(8,242)	(6,196)
Accumulated Other Comprehensive Income (Loss), ending balance		$ (3,184)	$ (13,632)	$ (3,184)	$ (13,632)

[1] These items are included in the computation of net periodic benefit cost. See Note I, Employee Benefits, for additional information.

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Accumulated Other Comprehensive Income Amounts Reclassified (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
		Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income (loss) before income taxes		$ (6,277)	$ (8,969)	$ 153,378	$ 103,402
Income tax expense (benefit)		2,288	3,161	(54,791)	(30,750)
Net (Income) Loss		(3,989)	(5,808)	98,587	72,652
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	2,416	1,666	8,157	6,577
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	(1,694)	(1,223)	(5,436)	(7,595)
Accumulated Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	722	443	2,721	(1,018)
Reclassification from AOCI, Current Period, Tax		(193)	(56)	(1,157)	423
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	[1]	529	387	1,564	(595)
Accumulated Net Unrealized Investment Gain (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		1,756	1,113	6,849	7,053
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		(52)	(40)	(171)	(262)
Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		(2,233)	(1,460)	(8,242)	(6,196)
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Unrealized Investment Gain (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net realized gain on sale of securities		2,191	1,388	8,443	8,757
Income (loss) before income taxes		2,191	1,388	8,443	8,757
Income tax expense (benefit)		(435)	(275)	(1,594)	(1,704)
Net (Income) Loss		1,756	1,113	6,849	7,053
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income (loss) before income taxes		(130)	(122)	(506)	(475)
Income tax expense (benefit)		78	82	335	213
Net (Income) Loss		(52)	(40)	(171)	(262)
Interest Rate Contract | Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest on long-term debt and revolving credit facility		$ (130)	$ (122)	$ (506)	$ (475)

[1] These items are included in the computation of net periodic benefit cost. See Note I, Employee Benefits, for additional information.

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Regulation (Narrative) (Details) $ in Thousands									3 Months Ended
	May 01, 2017 USD ($)	Feb. 22, 2017 USD ($)	Feb. 13, 2017 USD ($)	Jan. 10, 2017	Sep. 27, 2016 USD ($)	Aug. 25, 2016 USD ($)	Jul. 01, 2016 USD ($)	Jun. 08, 2016 USD ($)	Mar. 31, 2017 USD ($) MW	Dec. 31, 2016 USD ($)
Under-collection of fuel revenues									$ 2,519	$ 11,123
Over-collection of fuel revenues									$ 181	$ 255
PUCT
Period To Relate Back New Rates									155 days
Under-collection of fuel revenues									$ 2,500
Reconcilable Fuel Expense									$ 140,400
PUCT | Four Corners Generating Station
Purchase and Sale Agreement, Execution Date									Feb. 17, 2015
PUCT | Community Solar At Montana Power Station
Electric Capacity | MW									3
Number of customers subscribed									1,500
PUCT | Maximum
Surcharge Or Refund Period									18 months
PUCT | Four Corners Generating Station
Closing Date of Sale									Jul. 06, 2016
Mine Reclamation Liability, Noncurrent									$ 7,100
NMPRC
Reconcilable Fuel Expense									$ 127,500
Fuel Reconciliation Period									27 months
Over-collection of fuel revenues									$ 200
NMPRC | Holloman
Electric Capacity | MW									5
Non-Fuel Base Rate | PUCT
Public Utilities, Requested Rate Increase, Amount			$ 42,500
2016 Energy Efficiency Programs | PUCT | Subsequent Event
Public Utilities Requested Performance Incentive Bonus Related To Energy Efficiency Program	$ 1,000
2017 Energy Efficiency Programs | NMPRC
Public Utilities Requested Performance Incentive Bonus Related To Energy Efficiency Program							$ 400
Public Utilities Approved Performance Incentive Bonus Related To Energy Efficiency Program		$ 400
2015 Energy Efficiency Programs | NMPRC
Public Utilities Requested Performance Incentive Bonus Related To Energy Efficiency Program							$ 300
Public Utilities Approved Performance Incentive Bonus Related To Energy Efficiency Program									$ 300
Public Utilities, Regulatory Rate Making Impact | PUCT
Recovery of rate case expenses						$ 3,100
Period To Relate Back New Rates						80 days
Public Utilities, Regulatory Rate Making Impact | NMPRC
Public Utilities, Approved Return on Equity, Percentage								9.48%
Public Utilities, Regulatory Rate Making Impact | Non-Fuel Base Rate | PUCT | Four Corners Generating Station
Public Utilities, Approved Rate Increase, Amount						$ 3,700
Regulatory Current Asset, End Date for Recovery						Jul. 12, 2017
Public Utilities, Regulatory Rate Making Impact | Non-Fuel Base Rate | NMPRC
Public Utilities, Approved Rate Increase, Amount								$ 600
Public Utilities, Regulatory Rate Making Impact | Utility Cost Of Service | NMPRC
Public Utilities, Approved Rate Increase, Amount								$ 500
PUCT Docket No. 46610 | Fixed Fuel Factor
Increase In Fixed Fuel Factor, Percentage				28.80%
PUCT Docket No. 46308
Reconcilable Fuel Expense					$ 436,600
Fuel Reconciliation Period					36 months
NMPRC Case No. 15-00127-UT
Fuel Reconciliation Period								24 months

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Palo Verde (Narrative) (Details) - USD ($) $ in Thousands							3 Months Ended
	Mar. 10, 2017	Oct. 31, 2016	Mar. 31, 2016	Nov. 02, 2015	Jun. 01, 2015	Oct. 31, 2014	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Jointly Owned Utility Plant Interests [Line Items]
Decommissioning Fund Investments							$ 265,857		$ 255,708
Third Party Decommission Cost Estimates Study Period, in Years							3 years
Required period in years participants need a new decommissioning study							3 years
Refund passed through to customers							$ 8,530	$ 4,104
Palo Verde Generating Station
Jointly Owned Utility Plant Interests [Line Items]
Decommissioning Fund Investments							265,900
Estimated Decommissioning Costs							432,800
Decommission Cost Increase							52,100
Asset Retirement Obligation, Revision of Estimate Increase							$ 3,100
Suit Against Department of Energy for Spent Fuel
Jointly Owned Utility Plant Interests [Line Items]
Settlement Agreement, Counterparty's Name							U.S. Department of Energy
Lawsuit Filing Date		Oct. 31, 2016		Nov. 02, 2015		Oct. 31, 2014
Suit Against Department of Energy for Spent Fuel | Palo Verde Generating Station
Jointly Owned Utility Plant Interests [Line Items]
Settlement, Amount	$ 1,800		$ 1,900		$ 6,600
Refund passed through to customers	$ 1,400		$ 1,600		$ 5,800
Settlement Agreement Award Received, Date	Mar. 10, 2017		Mar. 31, 2016		Jun. 01, 2015
Suit Against Department of Energy for Spent Fuel | Palo Verde Participants
Jointly Owned Utility Plant Interests [Line Items]
Settlement, Amount		$ 11,300		$ 12,000		$ 42,000
Minimum | Suit Against Department of Energy for Spent Fuel
Jointly Owned Utility Plant Interests [Line Items]
Litigation, Period Covered		Jul. 01, 2015		Jul. 01, 2014		Jul. 01, 2011
Maximum | Suit Against Department of Energy for Spent Fuel
Jointly Owned Utility Plant Interests [Line Items]
Litigation, Period Covered		Jun. 30, 2016		Jun. 30, 2015		Jun. 30, 2014

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Palo Verde Operations and Maintenance Expense (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Palo Verde Generating Station
Operations & Maintenance Expenses [Line Items]
Utilities Operating Expense, Maintenance and Operations	$ 21,608	$ 22,343	$ 96,179	$ 98,134

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Common Stock (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Dividends, Common Stock [Abstract]
Dividends, Common Stock, Cash	$ 12,565	$ 11,928	$ 50,300	$ 47,700

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Common Stock (Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Earnings Per Share [Abstract]
Basic number of common shares outstanding	40,387,235	40,325,324	40,366,024	40,295,316
Dilutive effect of unvested performance awards	0	0	69,665	36,824
Diluted number of common shares outstanding	40,387,235	40,325,324	40,435,689	40,332,140
Net income (loss)	$ (3,989)	$ (5,808)	$ 98,587	$ 72,652
Income allocated to participating restricted stock	(45)	(32)	(349)	(209)
Net income (loss) available to common shareholders, basic	(4,034)	(5,840)	98,238	72,443
Income reallocated to participating restricted stock	(45)	(32)	(349)	(209)
Net income (loss) available to common shareholders, diluted	$ (4,034)	$ (5,840)	$ 98,238	$ 72,443
Earnings Per Share, Basic, Distributed	$ 0.31	$ 0.295	$ 1.24	$ 1.18
Earnings (losses) Per Share, Basic, Undistributed	(0.41)	(0.435)	1.19	0.62
Basic net income (loss) per common share	(0.10)	(0.140)	2.43	1.80
Earnings Per Share, Diluted, Distributed	0.31	0.295	1.24	1.18
Earnings (losses) Per Share, Diluted, Undistributed	(0.41)	(0.435)	1.19	0.62
Diluted net income (loss) per common share	$ (0.10)	$ (0.140)	$ 2.43	$ 1.80

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Common Stock (Antidilutive Securities Excluded From Computation Of Earnings Per Share) (Details) - shares		3 Months Ended		12 Months Ended
		Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Performance shares payout based upon performance		0	0	0	0
Performance shares payout level		100.00%	100.00%	100.00%	100.00%
Restricted Stock
Antidilutive Securities Excluded from the Computation of Diluted Earnings Per Share, Amount		78,025	59,462	58,344	54,192
Performance Shares
Antidilutive Securities Excluded from the Computation of Diluted Earnings Per Share, Amount	[1]	0	62,995	47,246	49,183

[1] Certain performance shares were excluded from the computation of diluted earnings per share as no payouts would have been required based upon performance at the end of each corresponding period.

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Income Taxes (Income Tax Rates) (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Income Tax [Line Items]
Effective tax rate	36.50%	35.20%	35.70%	29.70%
Federal statutory tax rate	35.00%	35.00%	35.00%	35.00%
Income Tax Rate Capital Gains	20.00%	20.00%	20.00%	20.00%

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Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017
Income Tax [Line Items]
Deferred Income Tax Expense	$ (3,209)	$ (3,632)
Internal Revenue Service (IRS) | Latest Tax Year
Income Tax [Line Items]
Tax Year Closed	2011
NEW MEXICO | Latest Tax Year
Income Tax [Line Items]
Tax Year Closed	2011
TEXAS | Earliest Tax Year
Income Tax [Line Items]
Income Tax Examination, Year under Examination	2007
TEXAS | Latest Tax Year
Income Tax [Line Items]
Income Tax Examination, Year under Examination	2011
ARIZONA | Latest Tax Year
Income Tax [Line Items]
Tax Year Closed	2011
Change in Accounting Method Accounted for as Change in Estimate
Income Tax [Line Items]
Regulatory Asset, Amortization Period	15 years
Deferred Income Tax Expense	$ 1,000		$ 5,100

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Commitments, Contingencies And Uncertainties (Narrative) (Details)	Mar. 28, 2017
Commitments and Contingencies Disclosure [Abstract]
Action Plan Implementation Period	3 years

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Employee Benefits (Retirement Plans And Other Postretirement Benefits) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2,270	$ 1,905	$ 8,366	$ 8,597
Interest cost	3,248	3,265	13,022	14,135
Expected return on plan assets	(4,808)	(4,712)	(18,975)	(19,560)
Amortization of prior service benefit	(878)	(878)	(3,506)	(3,496)
Amortization of net (gain) loss	2,089	1,888	7,540	9,785
Net periodic benefit cost (benefit)	1,921	1,468	6,447	9,461
Other Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	588	715	2,642	3,294
Interest cost	678	873	2,972	3,883
Expected return on plan assets	(470)	(460)	(1,845)	(2,005)
Amortization of prior service benefit	(1,538)	(788)	(4,651)	(3,081)
Amortization of net (gain) loss	(395)	(665)	(2,104)	(2,190)
Net periodic benefit cost (benefit)	$ (1,137)	$ (325)	$ (2,986)	$ (99)

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Employee Benefits (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2017 USD ($)
Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Employer Contribution	$ 3.0
Defined Benefit Plan, Expected Contributions in Current Fiscal Year	10.0
Other Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Employer Contribution	0.1
Defined Benefit Plan, Expected Contributions in Current Fiscal Year	$ 1.5

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Financial Instruments And Investments (Carrying Amount and Fair Value Amounts) (Details) - USD ($) $ in Thousands		Mar. 31, 2017	Dec. 31, 2016
Carrying (Reported) Amount, Fair Value Disclosure
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure		$ 1,413,014	$ 1,360,230
Carrying (Reported) Amount, Fair Value Disclosure | Pollution Control Bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure		190,844	190,775
Carrying (Reported) Amount, Fair Value Disclosure | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure		993,170	993,086
Carrying (Reported) Amount, Fair Value Disclosure | RGRT Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	[1]	94,822	94,795
Carrying (Reported) Amount, Fair Value Disclosure | Revolving Credit Facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	[1]	134,178	81,574
Estimate of Fair Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure		1,563,957	1,499,532
Estimate of Fair Value Measurement | Pollution Control Bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure		204,599	206,818
Estimate of Fair Value Measurement | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure		1,126,625	1,112,285
Estimate of Fair Value Measurement | RGRT Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	[1]	98,555	98,855
Estimate of Fair Value Measurement | Revolving Credit Facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	[1]	$ 134,178	$ 81,574

[1] Nuclear fuel financing, as of March 31, 2017 and December 31, 2016, is funded through the $95 million Rio Grande Resources Trust ("RGRT") Senior Notes and $40.2 million and $37.6 million, respectively under the RCF. As of March 31, 2017, $94.0 million was outstanding under the RCF for working capital or general corporate purposes. As of December 31, 2016, $44.0 million was outstanding under the RCF for working capital or general corporate purposes. The interest rate on the Company's borrowings under the RCF is reset throughout the quarter reflecting current market rates. Consequently, the carrying value approximates fair value.

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Financial Instruments And Investments (Long-Term Debt and Short-Term Borrowings - Narratives) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financial Instruments and Investments [Line Items]
Decommissioning Fund Investments	$ 265,857	$ 255,708
Nuclear Fuel Financing
Financial Instruments and Investments [Line Items]
Line of Credit Facility, Amount Outstanding	40,200	37,600
Working Capital and General Purpose
Financial Instruments and Investments [Line Items]
Line of Credit Facility, Amount Outstanding	94,000	44,000
RGRT Senior Notes
Financial Instruments and Investments [Line Items]
Long-term Debt, Gross	$ 95,000	$ 95,000

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Financial Instruments And Investments (Marketable Securities Fair Value And Unrealized Losses) (Details) $ in Thousands		3 Months Ended		12 Months Ended
		Mar. 31, 2017 USD ($) securities		Dec. 31, 2016 USD ($) securities
Financial Instruments and Investments [Line Items]
Marketable Securities Fair Value Less than 12 Months		$ 63,121	[1]	$ 86,509	[2]
Marketable Securities Unrealized Losses Less Than 12 Months		(1,470)	[1]	(1,844)	[2]
Marketable Securities Fair Value 12 Months or Longer		17,204	[1]	24,571	[2]
Marketable Securities Unrealized Losses 12 Months or Longer		(1,186)	[1]	(1,401)	[2]
Marketable Securities Fair Value Total		80,325	[1]	111,080	[2]
Marketable Securities Unrealized Losses Total		$ (2,656)	[1]	$ (3,245)	[2]
Number of securities | securities		139		152
Debt Securities
Financial Instruments and Investments [Line Items]
Marketable Securities Fair Value Less than 12 Months		$ 62,580	[1]	$ 60,804	[2]
Marketable Securities Unrealized Losses Less Than 12 Months		(1,417)	[1]	(1,567)	[2]
Marketable Securities Fair Value 12 Months or Longer		17,204	[1]	24,571	[2]
Marketable Securities Unrealized Losses 12 Months or Longer		(1,186)	[1]	(1,401)	[2]
Marketable Securities Fair Value Total		79,784	[1]	85,375	[2]
Marketable Securities Unrealized Losses Total		(2,603)	[1]	(2,968)	[2]
Federal Agency Mortgage Backed Securities
Financial Instruments and Investments [Line Items]
Marketable Securities Fair Value Less than 12 Months		11,142	[1]	11,582	[2]
Marketable Securities Unrealized Losses Less Than 12 Months		(249)	[1]	(239)	[2]
Marketable Securities Fair Value 12 Months or Longer		424	[1]	436	[2]
Marketable Securities Unrealized Losses 12 Months or Longer		(23)	[1]	(22)	[2]
Marketable Securities Fair Value Total		11,566	[1]	12,018	[2]
Marketable Securities Unrealized Losses Total		(272)	[1]	(261)	[2]
U.S. Government Bonds
Financial Instruments and Investments [Line Items]
Marketable Securities Fair Value Less than 12 Months		32,621	[1]	31,655	[2]
Marketable Securities Unrealized Losses Less Than 12 Months		(739)	[1]	(762)	[2]
Marketable Securities Fair Value 12 Months or Longer		9,876	[1]	17,976	[2]
Marketable Securities Unrealized Losses 12 Months or Longer		(570)	[1]	(835)	[2]
Marketable Securities Fair Value Total		42,497	[1]	49,631	[2]
Marketable Securities Unrealized Losses Total		(1,309)	[1]	(1,597)	[2]
Municipal Obligations
Financial Instruments and Investments [Line Items]
Marketable Securities Fair Value Less than 12 Months		9,152	[1]	9,596	[2]
Marketable Securities Unrealized Losses Less Than 12 Months		(298)	[1]	(394)	[2]
Marketable Securities Fair Value 12 Months or Longer		4,413	[1]	4,067	[2]
Marketable Securities Unrealized Losses 12 Months or Longer		(385)	[1]	(372)	[2]
Marketable Securities Fair Value Total		13,565	[1]	13,663	[2]
Marketable Securities Unrealized Losses Total		(683)	[1]	(766)	[2]
Corporate Obligations
Financial Instruments and Investments [Line Items]
Marketable Securities Fair Value Less than 12 Months		9,665	[1]	7,971	[2]
Marketable Securities Unrealized Losses Less Than 12 Months		(131)	[1]	(172)	[2]
Marketable Securities Fair Value 12 Months or Longer		2,491	[1]	2,092	[2]
Marketable Securities Unrealized Losses 12 Months or Longer		(208)	[1]	(172)	[2]
Marketable Securities Fair Value Total		12,156	[1]	10,063	[2]
Marketable Securities Unrealized Losses Total		(339)	[1]	(344)	[2]
Common Stock
Financial Instruments and Investments [Line Items]
Marketable Securities Fair Value Less than 12 Months		541	[1]	2,760	[2]
Marketable Securities Unrealized Losses Less Than 12 Months		(53)	[1]	(167)	[2]
Marketable Securities Fair Value 12 Months or Longer		0	[1]	0	[2]
Marketable Securities Unrealized Losses 12 Months or Longer		0	[1]	0	[2]
Marketable Securities Fair Value Total		541	[1]	2,760	[2]
Marketable Securities Unrealized Losses Total		$ (53)	[1]	(167)	[2]
Institutional Funds-International Equity
Financial Instruments and Investments [Line Items]
Marketable Securities Fair Value Less than 12 Months	[2]			22,945
Marketable Securities Unrealized Losses Less Than 12 Months	[2]			(110)
Marketable Securities Fair Value 12 Months or Longer	[2]			0
Marketable Securities Unrealized Losses 12 Months or Longer	[2]			0
Marketable Securities Fair Value Total	[2]			22,945
Marketable Securities Unrealized Losses Total	[2]			$ (110)

[1] Includes 139 securities.

[2] Includes 152 securities.

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Financial Instruments And Investments (Unrealized Holding Losses Included In Pre-Tax Income) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Financial Instruments And Investments [Abstract]
Unrealized losses included in pre-tax income	$ 0	$ (156)	$ (196)	$ (494)

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Financial Instruments And Investments (Marketable Securities Fair Value and Unrecognized Gross Unrealized Gains) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financial Instruments and Investments [Line Items]
Available-for-sale Securities, Gross Unrealized Gain	$ 43,608	$ 38,667
Marketable Securities Fair Value, Total	185,532	144,628
Debt Securities
Financial Instruments and Investments [Line Items]
Available-for-sale Securities, Unrealized Gain Position, Fair Value	41,281	34,498
Available-for-sale Securities, Gross Unrealized Gain	1,328	1,256
Federal Agency Mortgage Backed Securities
Financial Instruments and Investments [Line Items]
Available-for-sale Securities, Unrealized Gain Position, Fair Value	6,991	7,430
Available-for-sale Securities, Gross Unrealized Gain	276	319
U.S. Government Bonds
Financial Instruments and Investments [Line Items]
Available-for-sale Securities, Unrealized Gain Position, Fair Value	15,811	12,237
Available-for-sale Securities, Gross Unrealized Gain	198	138
Municipal Obligations
Financial Instruments and Investments [Line Items]
Available-for-sale Securities, Unrealized Gain Position, Fair Value	4,086	2,481
Available-for-sale Securities, Gross Unrealized Gain	144	144
Corporate Obligations
Financial Instruments and Investments [Line Items]
Available-for-sale Securities, Unrealized Gain Position, Fair Value	14,393	12,350
Available-for-sale Securities, Gross Unrealized Gain	710	655
Common Stock
Financial Instruments and Investments [Line Items]
Available-for-sale Securities, Unrealized Gain Position, Fair Value	62,487	61,884
Available-for-sale Securities, Gross Unrealized Gain	34,868	34,066
Mutual Funds - Equity
Financial Instruments and Investments [Line Items]
Available-for-sale Securities, Unrealized Gain Position, Fair Value	50,225	42,244
Available-for-sale Securities, Gross Unrealized Gain	5,690	3,345
Institutional Funds-International Equity
Financial Instruments and Investments [Line Items]
Available-for-sale Securities, Unrealized Gain Position, Fair Value	24,737	0
Available-for-sale Securities, Gross Unrealized Gain	1,722	0
Cash
Financial Instruments and Investments [Line Items]
Available-for-sale Securities, Gross Unrealized Gain	0	0
Cash | Held in trust Decommissioning Fund Investment
Financial Instruments and Investments [Line Items]
Cash	$ 6,802	$ 6,002

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Financial Instruments And Investments (Contractual Year For Maturity Of Available-For-Sale Securities ) (Details) $ in Thousands	Mar. 31, 2017 USD ($)
Municipal Debt Obligations
Schedule of Available-for-sale Securities [Line Items]
Total	$ 17,651
2017	804
2018 through 2021	6,366
2022 through 2026	9,203
2027 and Beyond	1,278
Corporate Debt Obligations
Schedule of Available-for-sale Securities [Line Items]
Total	26,549
2017	0
2018 through 2021	10,110
2022 through 2026	7,511
2027 and Beyond	8,928
U.S. Government Bonds
Schedule of Available-for-sale Securities [Line Items]
Total	58,308
2017	5,928
2018 through 2021	27,123
2022 through 2026	14,834
2027 and Beyond	10,423
Federal Agency Mortgage Backed Securities
Schedule of Available-for-sale Securities [Line Items]
Total	18,557
2017	0
2018 through 2021	6
2022 through 2026	356
2027 and Beyond	$ 18,195

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Financial Instruments And Investments (Sale Of Securities And The Related Effects On Pre-Tax Income ) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Investment [Line Items]
Proceeds from sales or maturities of available-for-sale securities	$ 26,055	$ 24,078	$ 93,245	$ 102,003
Gross realized gains included in pre-tax income	2,587	1,832	9,968	10,429
Gross realized losses included in pre-tax income	(396)	(288)	(1,329)	(1,178)
Gross unrealized losses included in pre-tax income	0	(156)	(196)	(494)
Net gains included in pre-tax income	2,191	1,388	8,443	8,757
Net unrealized holding gains (losses) included in accumulated other comprehensive income	7,721	2,190	13,975	(1,730)
Net gains reclassified from accumulated other comprehensive income	(2,191)	(1,388)	(8,443)	(8,757)
Net gains (losses) in other comprehensive income	$ 5,530	$ 802	$ 5,532	$ (10,487)

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Financial Instruments And Investments (Company's Decommissioning Trust Funds And Investments In Debt Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Decommisioning Fund Investments
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	$ 265,857	$ 255,708
Decommisioning Fund Investments | Quoted Prices In Active Markets For Identical Assets (Level 1)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	203,100	197,703
Decommisioning Fund Investments | Significant Other Observable Inputs (Level 2)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	62,757	58,005
Decommisioning Fund Investments | Significant Unobservable Inputs (Level 3)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	0	0
Debt Securities
Financial Instruments and Investments [Line Items]
Trading Securities	1,628	1,421
Debt Securities | Quoted Prices In Active Markets For Identical Assets (Level 1)
Financial Instruments and Investments [Line Items]
Trading Securities	0	0
Debt Securities | Significant Other Observable Inputs (Level 2)
Financial Instruments and Investments [Line Items]
Trading Securities	0	0
Debt Securities | Significant Unobservable Inputs (Level 3)
Financial Instruments and Investments [Line Items]
Trading Securities	1,628	1,421
Debt Securities | Decommisioning Fund Investments
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	121,065	119,873
Debt Securities | Decommisioning Fund Investments | Quoted Prices In Active Markets For Identical Assets (Level 1)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	58,308	61,868
Debt Securities | Decommisioning Fund Investments | Significant Other Observable Inputs (Level 2)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	62,757	58,005
Debt Securities | Decommisioning Fund Investments | Significant Unobservable Inputs (Level 3)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	0	0
U.S. Government Bonds | Decommisioning Fund Investments
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	58,308	61,868
U.S. Government Bonds | Decommisioning Fund Investments | Quoted Prices In Active Markets For Identical Assets (Level 1)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	58,308	61,868
U.S. Government Bonds | Decommisioning Fund Investments | Significant Other Observable Inputs (Level 2)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	0	0
U.S. Government Bonds | Decommisioning Fund Investments | Significant Unobservable Inputs (Level 3)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	0	0
Federal Agency Mortgage Backed Securities | Decommisioning Fund Investments
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	18,557	19,448
Federal Agency Mortgage Backed Securities | Decommisioning Fund Investments | Quoted Prices In Active Markets For Identical Assets (Level 1)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	0	0
Federal Agency Mortgage Backed Securities | Decommisioning Fund Investments | Significant Other Observable Inputs (Level 2)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	18,557	19,448
Federal Agency Mortgage Backed Securities | Decommisioning Fund Investments | Significant Unobservable Inputs (Level 3)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	0	0
Municipal Obligations | Decommisioning Fund Investments
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	17,651	16,144
Municipal Obligations | Decommisioning Fund Investments | Quoted Prices In Active Markets For Identical Assets (Level 1)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	0	0
Municipal Obligations | Decommisioning Fund Investments | Significant Other Observable Inputs (Level 2)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	17,651	16,144
Municipal Obligations | Decommisioning Fund Investments | Significant Unobservable Inputs (Level 3)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	0	0
Corporate Obligations | Decommisioning Fund Investments
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	26,549	22,413
Corporate Obligations | Decommisioning Fund Investments | Quoted Prices In Active Markets For Identical Assets (Level 1)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	0	0
Corporate Obligations | Decommisioning Fund Investments | Significant Other Observable Inputs (Level 2)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	26,549	22,413
Corporate Obligations | Decommisioning Fund Investments | Significant Unobservable Inputs (Level 3)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	0	0
Common Stock | Decommisioning Fund Investments
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	63,028	64,644
Common Stock | Decommisioning Fund Investments | Quoted Prices In Active Markets For Identical Assets (Level 1)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	63,028	64,644
Common Stock | Decommisioning Fund Investments | Significant Other Observable Inputs (Level 2)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	0	0
Common Stock | Decommisioning Fund Investments | Significant Unobservable Inputs (Level 3)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	0	0
Equity Funds | Decommisioning Fund Investments
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	50,225	42,244
Equity Funds | Decommisioning Fund Investments | Quoted Prices In Active Markets For Identical Assets (Level 1)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	50,225	42,244
Equity Funds | Decommisioning Fund Investments | Significant Other Observable Inputs (Level 2)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	0	0
Equity Funds | Decommisioning Fund Investments | Significant Unobservable Inputs (Level 3)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	0	0
Institutional Funds-International Equity | Decommisioning Fund Investments
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	24,737	22,945
Institutional Funds-International Equity | Decommisioning Fund Investments | Quoted Prices In Active Markets For Identical Assets (Level 1)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	24,737	22,945
Institutional Funds-International Equity | Decommisioning Fund Investments | Significant Other Observable Inputs (Level 2)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	0	0
Institutional Funds-International Equity | Decommisioning Fund Investments | Significant Unobservable Inputs (Level 3)
Financial Instruments and Investments [Line Items]
Available-for-sale Securities	0	0
Cash | Held in trust Decommissioning Fund Investment
Financial Instruments and Investments [Line Items]
Cash	6,802	6,002
Cash | Held in trust Decommissioning Fund Investment | Quoted Prices In Active Markets For Identical Assets (Level 1)
Financial Instruments and Investments [Line Items]
Cash	6,802	6,002
Cash | Held in trust Decommissioning Fund Investment | Significant Other Observable Inputs (Level 2)
Financial Instruments and Investments [Line Items]
Cash	0	0
Cash | Held in trust Decommissioning Fund Investment | Significant Unobservable Inputs (Level 3)
Financial Instruments and Investments [Line Items]
Cash	$ 0	$ 0

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Financial Instruments And Investments Transfers Between Levels (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value, Assets, Level 1 to Level 2 Transfers, Description	no	no	no	no
Fair Value, Assets, Level 2 to Level 1 Transfers, Description	no	no	no	no
Fair Value, Asset, Level 3 Purchases, (Sales), Issuances, (Settlements)	$ 0	$ 0	$ 0	$ 0