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Leases (Tables)
 12 Months Ended
Dec. 31, 2025
Leases [Abstract]  
Schedule of Lease Costs
The following table provides information related to our lease costs (dollars in thousands):

Year Ended December 31,
202520242023
Operating Lease Cost - PPAs and Energy Storage PPA Lease Contracts$292,625 $147,313 $126,655 
Operating Lease Cost - Land, Property, and Other Equipment22,120 20,120 19,235 
Total Operating Lease Cost314,745 167,433 145,890 
Variable Lease Cost (a)124,707 144,108 135,007 
Short-term Lease Cost2,250 20,653 21,530 
Total Lease Cost$441,702 $332,194 $302,427 
(a)    Primarily relates to PPA lease contracts.
The following tables provide other additional information related to operating lease liabilities (dollars in thousands):
Year Ended December 31,
202520242023
Cash paid for amounts included in the measurement of lease liabilities — operating cash flows:$226,484 $143,950 $123,472 
Right-of-use operating lease assets obtained in exchange for operating lease liabilities:$2,195,728 (a)$393,702 (b)602,301 (c)

December 31, 2025December 31, 2024
Weighted average remaining lease term15 years11 years
Weighted average discount rate (d)5.48 %4.90 %
(a)Primarily relates to nine new energy storage PPA operating leases that commenced in 2025.
(b)Primarily relates to the three new energy storage operating lease agreements that commenced in 2024.
(c)Primarily relates to the two purchased power operating lease agreements that were modified in January 2023.
(d)Most of our lease agreements do not contain an implicit rate that is readily determinable. For these agreements we use our incremental borrowing rate to measure the present value of lease liabilities. We determine our incremental borrowing rate at lease commencement based on the rate of interest that we would have to pay to borrow, on a collateralized basis over a similar term, an amount equal to the lease payments in a similar economic environment. We use the implicit rate when it is readily determinable.
Schedule of Maturities of Operating Lease Labilities
The following table provides information related to the maturity of our operating lease liabilities (dollars in thousands):
December 31, 2025
YearPPAs and Energy Storage PPA Lease ContractsLand, Property and Equipment LeasesTotal
2026 $364,197 $21,141 $385,338 
2027390,260 18,858 409,118 
2028394,202 16,166 410,368 
2029398,287 14,033 412,320 
2030402,416 9,811 412,227 
Thereafter3,590,042 59,700 3,649,742 
Total lease commitments5,539,404 139,709 5,679,113 
Less imputed interest1,899,993 42,169 1,942,162 
Total lease liabilities$3,639,411 $97,540 $3,736,951