Edison International is a major electric utility holding company headquartered in Rosemead, California. The company's core business is operated through its primary subsidiary, Southern California Edison (SCE), which functions as a regulated electric utility. SCE is responsible for supplying, transmitting, and distributing electricity to approximately 15 million residents across a 50,000-square-mile service area encompassing Central, Coastal, and Southern California. The utility's infrastructure includes extensive transmission and distribution networks, and its operations are heavily regulated by the California Public Utilities Commission (CPUC) and the Federal Energy Regulatory Commission (FERC).
In addition to its regulated utility operations, Edison International owns Trio (formerly Edison Energy), an unregulated global energy advisory firm. Trio provides integrated sustainability, renewable energy procurement, and energy optimization services to large commercial, industrial, and institutional clients in North America and Europe.
Edison International's revenue is overwhelmingly generated by SCE's regulated electric utility operations, which rely on recovering costs and earning authorized returns on infrastructure investments. The company's strategic focus is heavily tied to California's clean energy transition, requiring substantial investments in grid modernization, electrification readiness, and renewable energy integration. Furthermore, due to its geographic footprint, a significant portion of Edison International's capital expenditure and risk management strategy is dedicated to wildfire mitigation and system hardening to protect its infrastructure and limit liability exposure.
