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Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Electric Plant in Service |  |
Production | $ 1,469,008 | $ 1,412,826
Transmission | 820,415 | 777,613
Distribution | 726,159 | 654,704
General | 165,361 | 144,738
Electric Plant in Service | 3,180,943 | 2,989,881
Construction Work in Progress | 231,890 | 137,212
Total Gross Electric Plant | 3,412,833 | 3,127,093
Less Accumulated Depreciation | 899,049 | 851,148
Net Electric Plant | 2,513,784 | 2,275,945
Nonelectric Property, Plant and Equipment |  |
Nonelectric Property, Plant and Equipment | 362,565 | 311,924
Construction Work in Progress | 40,536 | 38,062
Total Gross Nonelectric Property, Plant and Equipment | 403,101 | 349,986
Less Accumulated Depreciation | 224,425 | 207,556
Net Nonelectric Property, Plant and Equipment | 178,676 | 142,430
Net Property, Plant and Equipment | 2,692,460 | 2,418,375
Equipment |  |
Nonelectric Property, Plant and Equipment |  |
Nonelectric Property, Plant and Equipment | 260,307 | 233,571
Buildings and Leasehold Improvements |  |
Nonelectric Property, Plant and Equipment |  |
Nonelectric Property, Plant and Equipment | 88,680 | 64,753
Land |  |
Nonelectric Property, Plant and Equipment |  |
Nonelectric Property, Plant and Equipment | $ 13,578 | $ 13,600

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