Revenue from Contracts with Customers (Tables)

12 Months Ended

Dec. 31, 2025

Revenue from Contract with Customer [Abstract]

Schedule of disaggregation of revenue

	Year Ended December 31, 2025
(in thousands)	Pennsylvania		Texas		Total
Natural gas	$	67,668	$	607,410	$	675,078
NGLs		—		173,059		173,059
Oil		—		9,460		9,460
Total natural gas, NGL, and oil sales		67,668		789,929		857,597
Merchant energy sales and other		—		288,981		288,981
Energy retail sales		—		154,654		154,654
Solar revenue		—		398		398
Physical power purchased		—		(195,281)		(195,281)
Revenue from contracts with customers - power		—		248,752		248,752
Marketing revenues		—		12,304		12,304
Midstream revenues		—		10,456		10,456
Other		—		11,664		11,664
Total	$	67,668	$	1,073,105	$	1,140,773

	Year Ended December 31, 2024
(in thousands)	Pennsylvania		Texas		Total
Natural gas	$	38,795	$	346,661	$	385,456
NGLs		—		165,508		165,508
Oil		—		6,606		6,606
Total natural gas, NGL, and oil sales		38,795		518,775		557,570
Merchant energy sales and other		—		234,477		234,477
Energy retail sales		—		135,652		135,652
Solar revenue		—		128		128
Physical power purchased		—		(151,989)		(151,989)
Revenue from contracts with customers - power		—		218,268		218,268
Marketing revenues	$	—		10,668		10,668
Midstream revenues		2,014		10,546		12,560
Other		—		6,631		6,631
Total	$	40,809	$	764,888	$	805,697

	Year Ended December 31, 2023
(in thousands)	Pennsylvania		Texas		Total
Natural gas	$	57,678	$	452,168	$	509,846
NGLs		—		187,860		187,860
Oil		—		8,445		8,445
Total natural gas, NGL, and oil sales		57,678		648,473		706,151
Merchant energy sales and other		—		413,915		413,915
Energy retail sales		—		40,261		40,261
Physical power purchased		—		(179,553)		(179,553)
Revenue from contracts with customers - power		—		274,623		274,623
Marketing revenues		—		8,710		8,710
Midstream revenues		4,635		11,533		16,168
Other		—		3,957		3,957
Total	$	62,313	$	947,296	$	1,009,609

Schedule of accounts receivable

	December 31,
(in thousands)	2025		2024
Accounts receivable - contracts with customers	$	97,308	$	61,960
Accounts receivable - derivative instruments		11,383		8,663
Accounts receivable - other		21,656		3,568
Allowance for credit losses		(1,270)		(2,511)
Total accounts receivable, net	$	129,077	$	71,680