Company: SOJE
Filing Date: 2025-02-20
Form Type: 10-K
Source: 0000092122-25-000018
Chunk: 1891

Company: SOUTHERN CO
Filing Date: 2025-02-20
Form: 10-K
Item: Item 8
Chunk 1891
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 Power, and Southern Company Gas that had not yet been recognized in net periodic other postretirement benefit cost.SouthernCompanySouthernPowerSouthern CompanyGas(in millions)Balance at December 31, 2024AOCI:Net (gain) loss$(14)$— $(15)Balance at December 31, 2023AOCI:Prior service cost$1 $— $— Net (gain) loss(10)1 (10)Total AOCI$(9)$1 $(10)The components of OCI related to the other postretirement benefit plans for the plan years ended December 31, 2024 and 2023 are presented in the following table:Southern CompanySouthernPowerSouthern Company Gas(in millions)AOCI:Balance at December 31, 2022$(4)$— $(2)Net (gain) loss(12)1 — Reclassification adjustments:Amortization of net gain (loss)7 — (8)Total change(5)1 (8)Balance at December 31, 2023$(9)$1 $(10)Net gain(8)(1)(5)Reclassification adjustments:Amortization of net gain (loss)3 — — Total change(5)(1)(5)Balance at December 31, 2024$(14)$— $(15)

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    Table of Contents                                Index to Financial StatementsCOMBINED NOTES TO FINANCIAL STATEMENTS

Components of the other postretirement benefit plans' net periodic cost for the Registrants were as follows:Southern CompanyAlabama PowerGeorgiaPowerMississippi PowerSouthern PowerSouthern Company Gas(in millions)2024Service cost$15 $4 $4 $1 $— $1 Interest cost65 16 23 3 — 8 Expected return on plan assets(89)(35)(32)(3)1 (13)Net amortization(*)(13)(3)(4)— — 6 Net periodic other postretirement benefit cost (income)$(22)$(18)$(9)$1 $1 $2 2023Service cost$15 $4 $4 $1 $— $1 Interest cost70 17 25 3 — 9 Expected return on plan assets(83)(33)(29)(3)1 (10)Net amortization(*)(11)(3