REGULATORY MATTERS - APC Certificate of Convenience and Necessity and RGC (Details) - Alabama Power $ in Millions |
Oct. 24, 2024
USD ($)
MW
|
Jun. 30, 2023
MW
|
Jun. 14, 2023
MW
|
Jun. 13, 2023
MW
|
Apr. 04, 2023
MW
|
|---|---|---|---|---|---|
| Schedule of Regulatory Assets and Liabilities [Line Items] | |||||
| Renewable generation certificate, authorized generating capacity (in MWs) | 500 | ||||
| Additional renewable capacity (in MWs) | 2,400 | ||||
| Size of allowable projects (in MWs) | 200 | 80 | |||
| Approval limit (in MWs) | 400 | 160 | |||
| Renewable generation certificate, generating capacity (in MWs) | 498 | ||||
| Tenaska Alabama Partners, L.P. | |||||
| Schedule of Regulatory Assets and Liabilities [Line Items] | |||||
| Consideration transferred | $ | $ 622 | ||||
| Approximate nameplate capacity (in MWs) | 855 |