Revenue (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

The following tables depict the disaggregation of revenue, including intercompany revenue, from contracts with customers by customer type and timing of revenue recognition for each of the reportable segments, for the years ended December 31, 2021, 2020 and 2019. Sales tax and other similar taxes are excluded from revenues.


Year ended December 31, 2021	Electric Utilities		Gas Utilities		Inter-company Revenues		Total
Customer types:	(in thousands)
Retail	$	711,448	$	913,725	$	—	$	1,625,173
Transportation	—		158,053		(428)		157,625
Wholesale	30,848		—		—		30,848
Market - off-system sales	41,682		396		—		42,078
Transmission/Other	52,945		39,365		(17,200)		75,110
Revenue from contracts with customers	836,923		1,111,539		(17,628)		1,930,834
Other revenues	5,335		13,326		(393)		18,268
Total revenues	$	842,258	$	1,124,865	$	(18,021)	$	1,949,102

Timing of revenue recognition:
Services transferred at a point in time	$	27,141	$	—	$	—	$	27,141
Services transferred over time	809,782		1,111,539		(17,628)		1,903,693
Revenue from contracts with customers	$	836,923	$	1,111,539	$	(17,628)	$	1,930,834


Year ended December 31, 2020	Electric Utilities		Gas Utilities		Inter-company Revenues		Total
Customer types:	(in thousands)
Retail	$	636,902	$	765,922	$	—	$	1,402,824
Transportation	—		154,581		(526)		154,055
Wholesale	24,845		—		—		24,845
Market - off-system sales	15,512		260		—		15,772
Transmission/Other	55,422		43,658		(15,772)		83,308
Revenue from contracts with customers	732,681		964,421		(16,298)		1,680,804
Other revenues	6,176		10,249		(288)		16,137
Total revenues	$	738,857	$	974,670	$	(16,586)	$	1,696,941

Timing of revenue recognition:
Services transferred at a point in time	$	27,089	$	—	$	—	$	27,089
Services transferred over time	705,592		964,421		(16,298)		1,653,715
Revenue from contracts with customers	$	732,681	$	964,421	$	(16,298)	$	1,680,804


Year ended December 31, 2019	Electric Utilities		Gas Utilities		Inter-company Revenues		Total
Customer types:	(in thousands)
Retail	$	632,936	$	817,840	$	—	$	1,450,776
Transportation	—		143,390		(1,042)		142,348
Wholesale	28,464		—		—		28,464
Market - off-system sales	16,081		691		—		16,772
Transmission/Other	53,750		47,725		(13,443)		88,032
Revenue from contracts with customers	731,231		1,009,646		(14,485)		1,726,392
Other revenues	8,124		384		—		8,508
Total revenues	$	739,355	$	1,010,030	$	(14,485)	$	1,734,900

Timing of revenue recognition:
Services transferred at a point in time	$	27,180	$	—	$	—	$	27,180
Services transferred over time	704,051		1,009,646		(14,485)		1,699,212
Revenue from contracts with customers	$	731,231	$	1,009,646	$	(14,485)	$	1,726,392