Revenues (Tables)

3 Months Ended

Mar. 31, 2026

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

The following tables disaggregate revenues by major source, timing of revenue recognition, and segment:

	Three months ended March 31, 2026
(in thousands)	Electric utility		All other		Total
Revenues from contracts with customers
Electric energy sales - residential	$	238,007	$	—	$	238,007
Electric energy sales - commercial	222,719		—		222,719
Electric energy sales - large light and power	254,596		—		254,596
Electric energy sales - other	4,796		—		4,796
Other sales	—		2,335		2,335
Total revenues from contracts with customers	720,118		2,335		722,453
Revenues from other sources
Regulatory revenue	14,451		—		14,451
Other	9,471		72		9,543
Total revenues from other sources	23,922		72		23,994
Total revenues	$	744,040	$	2,407	$	746,447
Timing of revenue recognition
Total revenues from contracts with customers - services/goods transferred over time	$	720,118	$	2,335	$	722,453

	Three months ended March 31, 2025
(in thousands)	Electric utility		All other		Total
Revenues from contracts with customers
Electric energy sales - residential	$	240,379	$	—	$	240,379
Electric energy sales - commercial	236,501		—		236,501
Electric energy sales - large light and power	262,118		—		262,118
Electric energy sales - other	4,487		—		4,487
Other sales	—		4,165		4,165
Total revenues from contracts with customers	743,485		4,165		747,650
Revenues from other sources
Regulatory revenue	(14,081)		—		(14,081)
Other	8,962		1,539		10,501
Total revenues from other sources	(5,119)		1,539		(3,580)
Total revenues	$	738,366	$	5,704	$	744,070
Timing of revenue recognition
Total revenues from contracts with customers - services/goods transferred over time	$	743,485	$	4,165	$	747,650