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REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables) | 12 Months Ended
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Dec. 31, 2024
Revenue from Contract with Customer [Abstract] |
Disaggregation of revenue | The following table disaggregates revenue from contracts with customers for the periods presented:
| Southern Company | Alabama Power | Georgia Power | Mississippi Power | Southern Power | Southern Company Gas
| (in millions)
2024 |  |  |  |  |  |
Operating revenues |  |  |  |  |  |
Retail electric revenues |  |  |  |  |  |
Residential | $ | 8,276 |  | $ | 3,133 |  | $ | 4,835 |  | $ | 308 |  | $ | — |  | $ | — |
Commercial | 6,585 |  | 2,042 |  | 4,219 |  | 324 |  | — |  | — |
Industrial | 3,892 |  | 1,742 |  | 1,808 |  | 342 |  | — |  | — |
Other | 124 |  | 13 |  | 102 |  | 9 |  | — |  | — |
Total retail electric revenues | 18,877 |  | 6,930 |  | 10,964 |  | 983 |  | — |  | — |
Natural gas distribution revenues |  |  |  |  |  |
Residential | 1,753 |  | — |  | — |  | — |  | — |  | 1,753 |
Commercial | 417 |  | — |  | — |  | — |  | — |  | 417 |
Transportation | 1,295 |  | — |  | — |  | — |  | — |  | 1,295 |
Industrial | 34 |  | — |  | — |  | — |  | — |  | 34 |
Other | 316 |  | — |  | — |  | — |  | — |  | 316 |
Total natural gas distribution revenues | 3,815 |  | — |  | — |  | — |  | — |  | 3,815 |
Wholesale electric revenues |  |  |  |  |  |
PPA energy revenues | 1,059 |  | 206 |  | 94 |  | 4 |  | 778 |  | — |
PPA capacity revenues | 641 |  | 108 |  | 136 |  | 63 |  | 400 |  | — |
Non-PPA revenues | 226 |  | 139 |  | 5 |  | 375 |  | 230 |  | — |
Total wholesale electric revenues | 1,926 |  | 453 |  | 235 |  | 442 |  | 1,408 |  | — |
Other natural gas revenues |  |  |  |  |  |
Gas marketing services | 507 |  | — |  | — |  | — |  | — |  | 507 |
Other | 18 |  | — |  | — |  | — |  | — |  | 18 |
Total other natural gas revenues | 525 |  | — |  | — |  | — |  | — |  | 525 |
Other revenues | 1,621 |  | 240 |  | 721 |  | 52 |  | 37 |  | — |
Total revenue from contracts with customers | 26,764 |  | 7,623 |  | 11,920 |  | 1,477 |  | 1,445 |  | 4,340 |
Other revenue sources(*) | (40) |  | (69) |  | (589) |  | (14) |  | 569 |  | 116 |
Total operating revenues | $ | 26,724 |  | $ | 7,554 |  | $ | 11,331 |  | $ | 1,463 |  | $ | 2,014 |  | $ | 4,456 |
| Southern Company | Alabama Power | Georgia Power | Mississippi Power | Southern Power | Southern Company Gas
| (in millions)
2023 |  |  |  |  |  |
Operating revenues |  |  |  |  |  |
Retail electric revenues |  |  |  |  |  |
Residential | $ | 7,309 |  | $ | 2,904 |  | $ | 4,105 |  | $ | 300 |  | $ | — |  | $ | — |
Commercial | 5,860 |  | 1,928 |  | 3,624 |  | 308 |  | — |  | — |
Industrial | 3,613 |  | 1,721 |  | 1,558 |  | 334 |  | — |  | — |
Other | 112 |  | 12 |  | 91 |  | 9 |  | — |  | — |
Total retail electric revenues | 16,894 |  | 6,565 |  | 9,378 |  | 951 |  | — |  | — |
Natural gas distribution revenues |  |  |  |  |  |
Residential | 1,981 |  | — |  | — |  | — |  | — |  | 1,981 |
Commercial | 505 |  | — |  | — |  | — |  | — |  | 505 |
Transportation | 1,184 |  | — |  | — |  | — |  | — |  | 1,184 |
Industrial | 45 |  | — |  | — |  | — |  | — |  | 45 |
Other | 324 |  | — |  | — |  | — |  | — |  | 324 |
Total natural gas distribution revenues | 4,039 |  | — |  | — |  | — |  | — |  | 4,039 |
Wholesale electric revenues |  |  |  |  |  |
PPA energy revenues | 1,107 |  | 234 |  | 87 |  | 20 |  | 790 |  | — |
PPA capacity revenues | 624 |  | 156 |  | 51 |  | 45 |  | 376 |  | — |
Non-PPA revenues | 250 |  | 65 |  | 35 |  | 407 |  | 409 |  | — |
Total wholesale electric revenues | 1,981 |  | 455 |  | 173 |  | 472 |  | 1,575 |  | — |
Other natural gas revenues |  |  |  |  |  |
Gas marketing services | 528 |  | — |  | — |  | — |  | — |  | 528 |
Other | 31 |  | — |  | — |  | — |  | — |  | 31 |
Total other natural gas revenues | 559 |  | — |  | — |  | — |  | — |  | 559 |
Other revenues | 1,355 |  | 213 |  | 578 |  | 39 |  | 55 |  | — |
Total revenue from contracts with customers | 24,828 |  | 7,233 |  | 10,129 |  | 1,462 |  | 1,630 |  | 4,598 |
Other revenue sources(*) | 425 |  | (183) |  | (11) |  | 12 |  | 559 |  | 104 |
Total operating revenues | $ | 25,253 |  | $ | 7,050 |  | $ | 10,118 |  | $ | 1,474 |  | $ | 2,189 |  | $ | 4,702 |
| Southern Company | Alabama Power | Georgia Power | Mississippi Power | Southern Power | Southern Company Gas
| (in millions)
2022 |  |  |  |  |  |
Operating revenues |  |  |  |  |  |
Retail electric revenues |  |  |  |  |  |
Residential | $ | 6,604 |  | $ | 2,638 |  | $ | 3,664 |  | $ | 302 |  | $ | — |  | $ | — |
Commercial | 5,369 |  | 1,685 |  | 3,385 |  | 299 |  | — |  | — |
Industrial | 3,764 |  | 1,507 |  | 1,921 |  | 336 |  | — |  | — |
Other | 102 |  | 14 |  | 79 |  | 9 |  | — |  | — |
Total retail electric revenues | 15,839 |  | 5,844 |  | 9,049 |  | 946 |  | — |  | — |
Natural gas distribution revenues |  |  |  |  |  |
Residential | 2,843 |  | — |  | — |  | — |  | — |  | 2,843 |
Commercial | 763 |  | — |  | — |  | — |  | — |  | 763 |
Transportation | 1,186 |  | — |  | — |  | — |  | — |  | 1,186 |
Industrial | 84 |  | — |  | — |  | — |  | — |  | 84 |
Other | 342 |  | — |  | — |  | — |  | — |  | 342 |
Total natural gas distribution revenues | 5,218 |  | — |  | — |  | — |  | — |  | 5,218 |
Wholesale electric revenues |  |  |  |  |  |
PPA energy revenues | 2,274 |  | 489 |  | 130 |  | 16 |  | 1,673 |  | — |
PPA capacity revenues | 596 |  | 194 |  | 47 |  | 4 |  | 356 |  | — |
Non-PPA revenues | 250 |  | 200 |  | 30 |  | 690 |  | 740 |  | — |
Total wholesale electric revenues | 3,120 |  | 883 |  | 207 |  | 710 |  | 2,769 |  | — |
Other natural gas revenues |  |  |  |  |  |
Gas marketing services | 636 |  | — |  | — |  | — |  | — |  | 636 |
Other | 51 |  | — |  | — |  | — |  | — |  | 51 |
Total other natural gas revenues | 687 |  | — |  | — |  | — |  | — |  | 687 |
Other revenues | 1,077 |  | 194 |  | 446 |  | 47 |  | 36 |  | — |
Total revenue from contracts with customers | 25,941 |  | 6,921 |  | 9,702 |  | 1,703 |  | 2,805 |  | 5,905 |
Other revenue sources(*) | 3,338 |  | 896 |  | 1,882 |  | (9) |  | 564 |  | 57 |
Total operating revenues | $ | 29,279 |  | $ | 7,817 |  | $ | 11,584 |  | $ | 1,694 |  | $ | 3,369 |  | $ | 5,962 |
(*)Other revenue sources relate to revenues from customers accounted for as derivatives and leases, alternative revenue programs at Southern Company Gas, and cost recovery mechanisms and revenues (including those related to fuel costs) that meet other scope exceptions for revenues from contracts with customers at the traditional electric operating companies. Products and Services
Electric Utilities' Revenues
Year | Retail |  | Wholesale |  | Other |  | Total
| (in millions)
2024 | $ | 17,790 |  |  | $ | 2,431 |  |  | $ | 1,382 |  |  | $ | 21,603 |
2023 | 16,343 |  |  | 2,467 |  |  | 1,188 |  |  | 19,998 |
2022 | 18,197 |  |  | 3,641 |  |  | 1,035 |  |  | 22,873 |
Southern Company Gas' Revenues
Year | Gas Distribution Operations |  | Gas Marketing Services |  |  |  | All Other |  |  | Total
| (in millions)
2024 | $ | 3,899 |  |  | $ | 516 |  |  |  |  | $ | 41 |  |  |  | $ | 4,456 |
2023 | 4,090 |  |  | 548 |  |  |  |  | 64 |  |  |  | 4,702 |
2022 | 5,240 |  |  | 638 |  |  |  |  | 84 |  |  |  | 5,962 |
Contract with customer, asset and liability | The following table reflects the closing balances of receivables, contract assets, and contract liabilities related to revenues from contracts with customers at December 31, 2024 and 2023:
| Southern Company | Alabama Power | Georgia Power | Mississippi Power | Southern Power | Southern Company Gas
| (in millions)
Accounts Receivable |  |  |  |  |  |
At December 31, 2024 | $ | 3,048 |  | $ | 783 |  | $ | 1,244 |  | $ | 113 |  | $ | 106 |  | $ | 660 |
At December 31, 2023 | 2,820 |  | 821 |  | 1,011 |  | 90 |  | 122 |  | 684 |
Contract Assets |  |  |  |  |  |
At December 31, 2024 | $ | 323 |  | $ | 3 |  | $ | 184 |  | $ | — |  | $ | — |  | $ | 72 |
At December 31, 2023 | 271 |  | 2 |  | 121 |  | — |  | — |  | 56 |
Contract Liabilities |  |  |  |  |  |
At December 31, 2024 | $ | 140 |  | $ | 11 |  | $ | 34 |  | $ | — |  | $ | 2 |  | $ | 3 |
At December 31, 2023 | 116 |  | — |  | 1 |  | — |  | 4 |  | — |
Revenue, remaining performance obligation, expected timing of satisfaction | Revenues from contracts with customers related to these performance obligations remaining at December 31, 2024 are expected to be recognized as follows:
| 2025 | 2026 | 2027 | 2028 | 2029 | Thereafter
| (in millions)
Southern Company | $ | 937 |  | $ | 427 |  | $ | 371 |  | $ | 343 |  | $ | 309 |  | $ | 2,636 |
Alabama Power | 11 |  | — |  | — |  | — |  | — |  | — |
Georgia Power | 69 |  | 30 |  | 15 |  | 16 |  | 2 |  | 27 |
Mississippi Power(*) | 63 |  | 66 |  | 69 |  | 73 |  | — |  | — |
Southern Power(*) | 340 |  | 331 |  | 340 |  | 316 |  | 312 |  | 2,609 |
Southern Company Gas | 2 |  | — |  | — |  | — |  | — |  | — |
(*)Includes performance obligations related to affiliate PPAs with Georgia Power. See Note 1 under "Affiliate Transactions" for additional information.

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