FORTUNE's Brainstorm: Green was powered by Southern California Edison (SCE), an Edison International company, and the largest electric utility in California. Serving more than 13 million people in a 50,000 square-mile area of Central, Coastal and Southern California. Based in Rosemead, California, SCE has been providing electric service in the region for 120 years. In keeping with its tradition of excellence, SCE has achieved national leadership positions in several distinct areas. These initiatives are just some of the ways in which SCE is leading the way in electricity.

SCE is the nation's leading purchaser of renewable energy. In 2007, SCE delivered 12.5 billion kilowatt-hours of renewable energy, more than any U.S. utility. SCE purchases one eighth of all U.S. renewable energy used to generate electricity for retail sale, including more than 90 percent of all U.S. solar generation.

SCE is also the nation's leader in energy-efficiency savings. During the past five years, SCE's energy-efficiency programs have saved more than 5 billion kilowatt-hours — enough energy to power 700,000 homes for an entire year. The programs have reduced greenhouse gas emissions by more than 2 million tons — the equivalent of removing 375,000 cars from the road.