Scheduled Site Maintenance on Sat., July 25.
We are making improvements. Some online services may be unavailable from 10 p.m. Sat., July 25 to 6 a.m. Sun., July 26.
Learn more about the California Independent System Operator as a non-profit benefit corporation and the only independent grid operator in the western United States. CAISO manages the wholesale power market promoting resources at lower prices, as well as the flow of electricity for 80% of California's high-voltage power lines.