Company: SOJE
Filing Date: 2025-02-20
Form Type: 10-K
Source: 0000092122-25-000018
Chunk: 1544

Company: SOUTHERN CO
Filing Date: 2025-02-20
Form: 10-K
Item: Item 8
Chunk 1544
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(*)Plant Vogtle Units 1 and 2(*)Plant Vogtle Unit 3 and 4(*)Most current study year2023202420242024Decommissioning periods:Beginning year2037203420472062Completion year2087208820922074(in millions)Site study costs:Radiated structures$1,402 $795 $674 $599 Spent fuel management513 306 255 88 Non-radiated structures133 77 107 89 Total site study costs$2,048 $1,178 $1,036 $776 (*)Based on Georgia Power's ownership interests.For ratemaking purposes, Alabama Power's decommissioning costs are based on the site study and Georgia Power's decommissioning costs are based on the NRC generic estimate to decommission the radioactive portion of the facilities and the site study estimate for spent fuel management. Significant assumptions used to determine these costs for ratemaking were an estimated inflation rate of 4.5% for Plant Farley, 2.5% for Plants Hatch and Vogtle Units 1 and 2, and 2.3% for Plant Vogtle Units 3 and 4 and an estimated trust earnings rate of 7.0% for Plant Farley, 4.5% for Plants Hatch and Vogtle Units 1 and 2, and 4.3% for Plant Vogtle Units 3 and 4.Amounts previously contributed to the Funds for Plant Farley are currently projected to be adequate to meet the decommissioning obligations. Alabama Power's site-specific estimates of decommissioning costs for Plant Farley are updated every five years. The next site study for Alabama Power is expected to be completed in 2028. Projections of funds are reviewed with the Alabama PSC to ensure that, over time, the deposits and earnings of the Funds will provide adequate funding to cover the site-specific costs. If necessary, Alabama Power would seek the Alabama PSC's approval to address any changes in a manner consistent with NRC and other applicable requirements.Under the 2019 ARP, Georgia Power's annual decommissioning cost for ratemaking in 2022 was a total of $4 million for Plant Hatch and Plant Vogtle Units 1 and 2. Effective January 1, 2023, as approved in the 2022 ARP, there is no annual decommissioning cost for ratemaking for Plant Hatch and Plant Vogtle Units