Scheduled Site Maintenance on Sat, May 30.
We are making improvements. Some online services may be unavailable from 10 p.m. Saturday, May 30 to 12 a.m. Sunday, May 31.
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.