J S Eastwood is a pumped storage facility located in Shaver Lake, California, operating under the jurisdiction of the Western Electricity Coordinating Council. With an operating capacity of 199.8 MW, the plant plays a crucial role in energy management within the California Independent System Operator’s power control area. The facility is regulated and is primarily owned and operated by Southern California Edison Company, a subsidiary of Edison International. Utilizing water as its fuel source, J S Eastwood contributes to the region’s renewable energy initiatives and supports grid stability through its advanced storage capabilities.