Edison International is a publicly traded utility holding company that, through its subsidiaries, focuses on the generation, transmission, and distribution of electric power. Its primary business is conducted through Southern California Edison, which delivers electricity across a broad service territory of roughly 50,000 square miles in southern, central, and coastal California, excluding the city of Los Angeles. The company serves a diversified customer base that includes residential, commercial, industrial, public authorities, agricultural users, and street lighting sectors. Edison International operates extensive high-voltage transmission and local distribution infrastructure, encompassing thousands of circuit-miles of overhead and underground lines and numerous substations to support grid reliability and regional power needs. In addition, the company is involved in energy-related products and services through non-utility businesses, contributing to the wider energy ecosystem. Founded in 1886 and headquartered in Rosemead, California, Edison International plays a significant role in the regulated electric utilities sector in the United States.