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Segment Information
 6 Months Ended
Jun. 30, 2021
Segment Reporting [Abstract]  
Segment Information Segment Information
The following segment presentation is based on the methodology that management uses for making operating decisions and assessing performance of its various business activities. A reconciliation of the segment presentation to the GAAP financial statements is provided.

PNM

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

TNMP

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

Corporate and Other

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

The following tables present summarized financial information for PNMR by segment. PNM and TNMP each operate in only one segment. Therefore, tabular segment information is not presented for PNM and TNMP.
PNMR SEGMENT INFORMATION
PNMTNMPCorporate
and Other		PNMR Consolidated
(In thousands)
Three Months Ended June 30, 2021
Electric operating revenues$323,949 $102,591 $— $426,540 
Cost of energy123,768 28,908 — 152,676 
Utility margin200,181 73,683 — 273,864 
Other operating expenses105,925 26,504 (3,495)128,934 
Depreciation and amortization42,489 22,475 5,763 70,727 
Operating income (loss)51,767 24,704 (2,268)74,203 
Interest income3,417 — 161 3,578 
Other income11,103 1,045 250 12,398 
Interest charges(13,039)(8,277)(2,803)(24,119)
Segment earnings (loss) before income taxes
53,248 17,472 (4,660)66,060 
Income taxes (benefit)7,844 1,822 (1,367)8,299 
Segment earnings (loss)
45,404 15,650 (3,293)57,761 
Valencia non-controlling interest
(3,920)— — (3,920)
Subsidiary preferred stock dividends
(132)— — (132)
Segment earnings (loss) attributable to PNMR
$41,352 $15,650 $(3,293)$53,709 
Six Months Ended June 30, 2021
Electric operating revenues$595,162 $196,085 $— $791,247 
Cost of energy212,654 55,418 — 268,072 
Utility margin382,508 140,667 — 523,175 
Other operating expenses213,253 54,273 (2,321)265,205 
Depreciation and amortization84,438 44,665 11,498 140,601 
Operating income (loss)84,817 41,729 (9,177)117,369 
Interest income7,012 — 125 7,137 
Other income (deductions)12,347 2,107 (126)14,328 
Interest charges(25,932)(16,752)(7,319)(50,003)
Segment earnings (loss) before income taxes
78,244 27,084 (16,497)88,831 
Income taxes (benefit)10,678 2,699 (3,512)9,865 
Segment earnings (loss)
67,566 24,385 (12,985)78,966 
Valencia non-controlling interest
(7,414)— — (7,414)
Subsidiary preferred stock dividends
(264)— — (264)
Segment earnings (loss) attributable to PNMR
$59,888 $24,385 $(12,985)$71,288 
At June 30, 2021:
Total Assets
$5,656,515 $2,245,301 $218,653 $8,120,469 
Goodwill
$51,632 $226,665 $— $278,297 
PNMTNMPCorporate
and Other		PNMR Consolidated
(In thousands)
Three Months Ended June 30, 2020
Electric operating revenues$260,788 $96,861 $— $357,649 
Cost of energy67,884 25,979 — 93,863 
Utility margin192,904 70,882 — 263,786 
Other operating expenses101,557 25,339 (4,282)122,614 
Depreciation and amortization41,763 22,368 5,891 70,022 
Operating income (loss)49,584 23,175 (1,609)71,150 
Interest income3,147 — (76)3,071 
Other income (deductions)20,954 1,963 (214)22,703 
Interest charges(19,178)(7,361)(4,549)(31,088)
Segment earnings (loss) before income taxes
54,507 17,777 (6,448)65,836 
Income taxes (benefit)4,895 1,603 (2,223)4,275 
Segment earnings (loss)
49,612 16,174 (4,225)61,561 
Valencia non-controlling interest
(3,940)— — (3,940)
Subsidiary preferred stock dividends
(132)— — (132)
Segment earnings (loss) attributable to PNMR
$45,540 $16,174 $(4,225)$57,489 
Six Months Ended June 30, 2020
Electric operating revenues$508,921 $182,350 $— $691,271 
Cost of energy142,408 50,165 — 192,573 
Utility margin366,513 132,185 — 498,698 
Other operating expenses200,113 50,461 (9,759)240,815 
Depreciation and amortization83,212 44,204 11,579 138,995 
Operating income (loss)83,188 37,520 (1,820)118,888 
Interest income6,643 — (149)6,494 
Other income (deductions)(13,072)2,524 (755)(11,303)
Interest charges(36,807)(14,533)(10,182)(61,522)
Segment earnings (loss) before income taxes
39,952 25,511 (12,906)52,557 
Income taxes (benefit)2,536 2,245 (2,386)2,395 
Segment earnings (loss)
37,416 23,266 (10,520)50,162 
Valencia non-controlling interest
(7,669)— — (7,669)
Subsidiary preferred stock dividends
(264)— — (264)
Segment earnings (loss) attributable to PNMR
$29,483 $23,266 $(10,520)$42,229 
At June 30, 2020:
Total Assets
$5,377,422 $1,985,721 $211,324 $7,574,467 
Goodwill
$51,632 $226,665 $— $278,297 

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