Company: SCE-PL
Filing Date: 2025-02-27
Form Type: 10-K
Source: 0000827052-25-000022
Chunk: 31

Company: SOUTHERN CALIFORNIA EDISON Co
Filing Date: 2025-02-27
Form: 10-K
Item: Item 7
Chunk 31
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 the DOE have led to the construction of costly alternatives and associated siting and environmental issues. Two Independent Spent Fuel Storage Installations ("ISFSI") store nuclear fuel onsite at San Onofre. The first stores nuclear fuel from all three Units ("ISFSI 1") and the second stores nuclear fuel from Units 2 and 3 ("ISFSI 2"). 

SCE's Coastal Development Permits, the principal discretionary permits required for maintaining the ISFSIs onsite, currently extend through 2035.

Decommissioning of San Onofre Unit 1 began in 1999 and the transfer of spent nuclear fuel from Unit 1 to dry cask storage in ISFSI 1 was completed in 2005. Major decommissioning work for Unit 1 has been completed except for certain underground work. 

Decommissioning of San Onofre Units 2 and 3 began in June 2013 and the transfer of spent nuclear fuel from San Onofre Units 2 and 3 to dry cask storage in the two ISFSIs was completed in August 2020. In August 2020, SCE commenced, and is currently conducting, major decommissioning activities in accordance with the terms of the Coastal Developmental Permit for decommissioning San Onofre Units 2 and 3.

SCE's share of the San Onofre Units 2 and 3 decommissioning costs recorded for the years ended December 31, 2024 and 2023 were $218 million (in 2024 dollars) and $226 million (in 2023 dollars), respectively. The CPUC conducts a reasonableness review of recorded decommissioning costs in NDCTPs, which are submitted every three years.

SCE filed the 2021 NDCTP with the CPUC in February 2022 to request reasonableness review of approximately $570 million (SCE share in 2022 dollars) of recorded San Onofre Units 2 and 3 decommissioning costs incurred during the period 2018 to 2020, and subsequently agreed to a $30 million disallowance under a settlement with the relevant intervenors. In the third quarter of 2024, the CPUC approved the 2021 NDCTP, as modified by the settlement agreement, and SCE made a contribution accordingly to the non-qualified nuclear decommissioning trust to effectuate the disallowance.

SCE filed its 2024 NDCTP