Company: SCE-PL
Filing Date: 2025-02-27
Form Type: 10-K
Source: 0000827052-25-000022
Chunk: 699

Company: SOUTHERN CALIFORNIA EDISON Co
Filing Date: 2025-02-27
Form: 10-K
Item: Item 8
Chunk 699
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 structure, rates are based on the time of day and the season. TOU rates are typically lower early in the day, overnight, and on the weekends when energy resources are less in demand. SCE completed a multi-year transition to TOU rates in June 2022, and, as of December 31, 2024, approximately 60% of residential customers are on TOU rates. To recover a portion of the fixed costs of serving no- or low-usage residential customers, SCE assesses both fixed charges of less than $1 per month, and a minimum charge of $10 per month ($5 for low-income customers). In May 2024, the CPUC authorized a residential class Basic Service Charge (i.e., fixed 

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charge) with three tier level graduations. The Basic Service Charge graduations are based on participation in income-qualified programs. Customers in the California Alternative Rates for Energy (CARE) and Family Electric Rates Assistance (FERA) programs receive Basic Service Charges that are respectively 25% and 50% of the $24.15 fixed charge applicable to all other residential customers. The newly adopted fixed charges will be implemented in the fourth quarter of 2025. SCE will continue to offer financial assistance programs (CARE and FERA) that provide significant discounts to customers who qualify for bill assistance based on their household size and income. For information on residential rates for customers with renewable generation systems, see "—Competition" below.

Purchased Power and Fuel Supply

SCE obtains the power, energy, and local grid support needed to serve its customers primarily from purchases from external parties. SCE estimates that approximately 19% of power delivered to SCE's customers in 2024 came from SCE's own generating facilities.

Natural Gas Supply

SCE requires natural gas to fuel its Mountainview and peaker plants, which are generation units that operate in response to wholesale market signals related to power prices and reliability needs. The physical natural gas purchased by SCE is sourced in competitive interstate markets at trading points on the SoCalGas local distribution company system. SoCalGas is the primary provider of intrastate pipeline transportation service to the gas-fueled generation stations that SCE controls. In 2015 – 2016, SoCalGas experienced a significant natural gas fuel leak at its Aliso Canyon underground gas storage facility that resulted in reduced capacity and usage of the facility. Currently, Aliso Canyon is authorized to operate at up to 79% of its maximum capacity. CP