United States of America

Folsom Powerplant— 198.6 MW Hydroelectric

HydroRenewableVerified: Feb 2026

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The Folsom Powerplant, commissioned in 1955, exemplifies the enduring significance of hydroelectric power in the United States, ranking #1438 out of 10,047 power facilities nationwide and #103 among 1,469 hydro plants. With a generation capacity of 198.6 MW, it contributes a minimal 0.01% to the national energy capacity of 1,386,385 MW, which is predominantly sourced from natural gas. Located in California, the Folsom Powerplant is part of a dynamic energy hub, surrounded by significant power generation facilities, including the Rancho Seco Nuclear Generating Station, a substantial source of nuclear energy with an impressive 918 MW capacity. The nearby Cosumnes Power Plant and Cosumnes facility, both gas-powered with capacities of 556.8 MW, further illustrate the area's diverse power generation landscape. Additionally, the White Rock/Slab Creek hydro facility, with a capacity of 266.5 MW, complements Folsom's output, underscoring the importance of hydroelectric energy in the region. While the average capacity for plants in the U.S. tends to be higher, Folsom’s consistent operation over decades reflects the reliability of hydro energy. Operated by the United States Bureau of Reclamation, this facility plays a vital role in managing water resources and generating clean electricity. As the nation grapples with climate change and seeks to enhance its renewable energy portfolio, Folsom Powerplant serves as a critical asset, demonstrating the potential of hydroelectric power to contribute to a sustainable energy framework.