Edison International is a powerhouse in the energy sector, primarily focused on lighting up Southern California. With a history dating back to 1886, this company plays a crucial role in generating and distributing electricity across a vast 50,000 square mile area. It serves a diverse mix of customers, including homes, businesses, and public authorities, through an extensive network of transmission and distribution lines. Based in Rosemead, California, Edison International ensures that its region stays powered with both overhead and underground lines, alongside numerous substations.