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Utility Hydroelectric Generation by Size and County: 2022

Published by California Energy Commission | State of California | Metadata Last Checked: July 28, 2025 | Last Modified: 2024-01-23T19:21:21.000Z
Energy generation data and map are from the California Energy Commission for all power plants that have a nameplate capacity of 1MW or more. Small hydroelectric plants are designated as a renewable energy source if their nameplate capacity is more than 30MW, it is classified as a large hydroelectric plant. Counties without symbols either did not report data or had no utility-scale hydroelectric power generation. Data is from 2022 and is current as of July 10, 2023.

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