LEASES
The Company is a lessee in operating transactions primarily consisting of land leases for its exploration and development activities and storage activities. Additionally, the Company is a lessee in finance lease transactions for its fleet vehicles. The Company is a lessor primarily in PPAs that are accounted under lease accounting, as further described under Note 1 to the consolidated financial statements under “Revenues and cost of revenues”, and “Leases”.
Leases in Which the Company is a Lessee
The table below presents the effects on the amounts relating to total lease cost:
Year Ended December 31,
202520242023
(Dollars in thousands)
Lease cost:
Finance lease cost:
Amortization of right-of-use assets $1,821 $1,388 $1,922 
Interest on lease liabilities 206 143 168 
Operating lease cost 6,665 5,657 4,771 
Short-term and variable lease cost 10,220 6,738 6,741 
Total lease cost
$18,912 $13,926 $13,602 
Other information:
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for finance leases $206 $143 $168 
Operating cash flows for operating leases 7,909 10,526 4,448 
Financing cash flows for finance leases 1,840 1,383 1,963 
Right-of-use assets obtained in exchange for new finance lease liabilities 3,677 761 1,671 
Right-of-use assets obtained in exchange for new operating lease liabilities 12,174 12,599 4,731 
December 31,
Additional information as of the end of the year:20252024
Weighted-average remaining lease term — finance leases (in years)
12.313.4
Weighted-average remaining lease term — operating leases (in years)14.916.3
Weighted-average discount rate — finance leases (in percentage)
%%
Weighted-average discount rate — operating leases (in percentage)%%
Future minimum lease payments under non-cancellable leases as of December 31, 2025 were as follows:
Operating LeasesFinance Leases
Financing Liability (1)
(Dollars in thousands)
Year ending December 31,
2026$6,098 $551 $22,675 
20274,879 1,885 20,815 
20283,914 1,127 20,578 
20293,211 938 23,165 
20302,477 399 19,856 
Thereafter30,608 29 230,986 
Total future minimum lease payments51,187 4,929 338,075 
Less imputed interest16,663 402 121,679 
Total$34,524 $4,527 $216,396 
(1) Financing liability was assumed as part of the Terra-Gen business combination transaction in 2021 as further described under Note 11 to the consolidated financial statements, and is related to the sale and lease-back transaction of the Dixie Valley geothermal assets.  
Leases in Which the Company is a Lessor
The table below presents lease income recognized as a lessor:
Year Ended December 31,
202520242023
(Dollars in thousands)
Lease income relating to lease payments of operating leases $569,120 $553,348 $542,065 

Historical Timeline

Fiscal YearFiled
2025Feb 26, 2026Showing above
2024Feb 27, 2025
2021Feb 25, 2022
2020Feb 26, 2021
2019Mar 2, 2020
2018Mar 1, 2019
2017Mar 16, 2018
2016Mar 1, 2017
2015Feb 26, 2016

About Leases Disclosures

Lease disclosures under ASC 842 provide a comprehensive view of a company's leased asset portfolio, including the split between operating and finance leases, discount rates used to present-value future payments, and the maturity schedule of lease obligations. This section reveals a significant source of off-balance-sheet commitments that were largely hidden before the current standard.

Key signals: the weighted-average discount rate affects the size of recorded lease liabilities — a higher rate reduces the reported obligation, so compare the chosen rate against the company's incremental borrowing rate. The operating versus finance lease mix affects both EBITDA and operating income presentation. Watch the maturity table for concentration risk: large payment cliffs in specific years may create cash flow pressure. Variable lease payments excluded from the liability measurement represent real obligations that do not appear on the balance sheet. Compare total lease costs against prior-year operating lease expense to assess the true economic burden.