Commitments (Tables)

12 Months Ended

Dec. 31, 2023

Commitments and Contingencies Disclosure [Abstract]

Schedule of estimated commitments

As of December 31, 2023, our estimated commitments are as follows:

	(dollars in thousands)
	Coal		Nuclear Fuel		Gas Transportation		Maintenance Agreements		Asset Retirement Obligations		Finance and Operating Leases
2024	$	33,810	$	95,520	$	66,186	$	57,749	$	51,378	$	16,862
2025	15,938		36,000		67,368		43,025		39,673		16,652
2026	9,362		32,250		69,578		15,736		45,923		16,361
2027	—		28,800		73,075		3,237		59,885		16,083
2028	—		28,500		68,971		46,964		71,267		4,078
Thereafter	—		45,660		835,212		269,196		5,065,526		8,428