Regulatory Assets and Liabilities (Tables)

12 Months Ended

Dec. 31, 2022

Regulated Operations [Abstract]

Schedule of Regulatory Assets and Liabilities

Regulatory assets and liabilities reflected in the Consolidated Balance Sheets are presented below.

	PNM				TNMP
	December 31,				December 31,
	2022		2021		2022		2021
Assets:	(In thousands)
Current:
FPPAC	$	8,904	$	7,130	$	—	$	—
NMPRC hedging plan	9,429		1,591		—		—
Transmission cost recovery factor	—		—		—		3,906
Energy efficiency costs	—		—		1,932		2,158
	18,333		8,721		1,932		6,064

	PNM				TNMP
	December 31,				December 31,
	2022		2021		2022		2021
Assets (Continued):	(In thousands)
Non-Current:
SJGS - ETA (1)	$	343,238	$	51,975	$	—	$	—
SJGS - non-ETA (2)	26,296		43		—		—
Shutdown of SJGS Units 2 and 3	94,677		100,954		—		—
SJGS replacement resources	8,312		8,269		—		—
EIM	13,102		7,028		—		—
Loss on reacquired debt	15,323		17,249		26,317		27,615
Pension and OPEB(3)	187,182		165,006		21,558		17,924
Deferred income taxes	67,621		68,687		9,193		9,505
AMS surcharge	—		—		6,254		12,507
AMS retirement and other costs	—		—		12,591		12,286
Deferred COVID-19 costs	5,664		6,896		1,053		—
Other	2,526		2,874		5,779		5,440
	763,941		428,981		82,745		85,277
Total regulatory assets	$	782,274	$	437,702	$	84,677	$	91,341
	PNM				TNMP
	December 31,				December 31,
	2022		2021		2022		2021
Liabilities:
Current:
Renewable energy rider, including excess return	$	(5,076)	$	(5,989)	$	—	$	—
Energy efficiency costs	(2,837)		(2,327)		—		—
Transmission cost recovery factor	—		—		(9,089)		—
	(7,913)		(8,316)		(9,089)		—
Non-Current:
Cost of removal	(238,903)		(294,193)		(97,030)		(73,029)
Deferred income taxes	(301,493)		(321,976)		(94,994)		(107,250)
PVNGS ARO	—		(1,215)		—		—
Renewable energy tax benefits	(15,610)		(16,756)		—		—
Accelerated depreciation SNCRs(3)	—		(16,331)		—		—
Pension and OPEB	—		(2,376)		(4,518)		(6,099)
COVID-19 cost savings	(900)		(900)		—		—
Other	(83)		(83)		(1,671)		(1,185)
	(556,989)		(653,830)		(198,213)		(187,563)
Total regulatory liabilities	$	(564,902)	$	(662,146)	$	(207,302)	$	(187,563)

(1) Amounts approved for recovery through the Energy Transition Charge, see Note 17

(2) Authorized to be recorded as regulatory assets for certain other abandonment costs that are not specifically addressed under the provisions of the ETA, see Note 17

(3) Reclassified to the SJGS - ETA regulatory asset after shutdown of SJGS in 2022