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ACQUISITIONS AND DISPOSITIONS (Tables) | 12 Months Ended
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Dec. 31, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract] |
Schedule of construction projects |
Project Facility | Resource | Approximate Nameplate Capacity (MW) | Location | Actual/Projected COD | PPA Contract Period
Projects Under Construction at December 31, 2024
Millers Branch |  |  |  |  |
Phase I | Solar | 200 | Haskell County, TX | Fourth quarter 2025 | 20 years
Phase II | Solar | 180 | Haskell County, TX | Second quarter 2026 | 15 years
Phase III | Solar | 132 | Haskell County, TX | Fourth quarter 2026 | 15 years
Projects Completed During 2024
South Cheyenne | Solar | 150 | Laramie County, WY | April 2024 | 20 years
Projects Completed During 2022
Garland Solar Storage(a) | Battery energy storage | 88 | Kern County, CA | September 2021 through February 2022(b) | 20 years
Tranquillity Solar Storage(a) | Battery energy storage | 72 | Fresno County, CA | November 2021 through March 2022(c) | 20 years
(a)Southern Power consolidates each project's operating results in its financial statements and the tax equity partner and two other partners each own a noncontrolling interest. See Note 9 under "Lessor" for additional information. (b)The facility has a total capacity of 88 MWs, of which 73 MWs were placed in service in 2021 and 15 MWs were placed in service in 2022. (c)The facility has a total capacity of 72 MWs, of which 32 MWs were placed in service in 2021 and 40 MWs were placed in service in 2022.

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