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v3.25.2

Revenue Customer Type (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2025 USD ($) Units | Jun. 30, 2024 USD ($) | Jun. 30, 2025 USD ($) Units | Jun. 30, 2024 USD ($)
Revenue, Major Customer [Line Items] |  |  |  |
MLGW's % of operating revenues |  |  | 800.00% | 800.00%
NES's % of operating revenues |  |  | 800.00% | 800.00%
Off System Sales of Electricity | $ 2 | $ 2 | $ 4 | $ 6
Bill credits for LTA | $ (53) | $ (51) | $ (164) | $ (152)
Number of LPCs signed LTA | Units | 148 |  | 148 |
Number of LPCs signed Flexibility Agreement | Units | 107 |  | 107 |
Percent of sales of electricity to LPCs | 91.00% | 92.00% | 91.00% | 92.00%
Pre-commercial Ops - capitalized revenue | $ (1) | $ 0 | $ (3) | $ 3
Regulated Operating Revenue | 3,261 | 2,830 | 9,613 | 8,654
Unregulated Operating Revenue | 45 | 49 | 145 | 144
Regulated and Unregulated Operating Revenue | 3,306 | 2,879 | 9,758 | 8,798
lpcs [Domain] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Regulated Operating Revenue | 2,967 | 2,596 | 8,782 | 7,925
industries directly served [Domain] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Regulated Operating Revenue | 259 | 205 | 734 | 642
federal agencies and other [Domain] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Regulated Operating Revenue | 36 | 29 | 100 | 90
ALABAMA |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Regulated Operating Revenue | 477 | 409 | 1,428 | 1,274
GEORGIA |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Regulated Operating Revenue | 74 | 65 | 242 | 214
KENTUCKY |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Regulated Operating Revenue | 209 | 179 | 605 | 557
MISSISSIPPI |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Regulated Operating Revenue | 310 | 277 | 886 | 816
NORTH CAROLINA |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Regulated Operating Revenue | 18 | 19 | 67 | 70
TENNESSEE |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Regulated Operating Revenue | 2,161 | 1,869 | 6,345 | 5,685
VIRGINIA |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Regulated Operating Revenue | $ 11 | $ 10 | $ 39 | $ 35

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- Definition MLGW's % of operating revenues + References No definition available. + Details
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- Definition NES's % of operating revenues + References No definition available. + Details
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