Edward C Hyatt

Edward C Hyatt is a 644 MW hydroelectric power plant in Butte County, California, operated by California Dept. of Water Resources. EIA-860M lists 6 generating units here, inside CAISO. Its units entered service between 1968 and 1969.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Nameplate capacity
644.1 MW
743.1 MW net summer
Generating units
6
In service
1968–1969
EIA plant ID
437

Where it is

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County
Butte County, California
Coordinates
39.543, -121.4922
Balancing authority
CISO
Sector
Electric Utility

Units, technology and status

Operator of record
California Dept. of Water Resources
Primary energy source
Hydro
Technologies
Conventional Hydroelectric, Hydroelectric Pumped Storage
Status
Operating

This site runs on more than one energy source. EIA-860M capacity splits: Hydro 351 MW, Pumped storage 293 MW. It is filed here under Hydro, the source with the most capacity.

Every plant California Dept. of Water Resources reports to EIA →

Edward C Hyatt: FAQ

Where is Edward C Hyatt?
In Butte County, California (CA). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
How big is Edward C Hyatt?
644 MW of nameplate capacity across 6 units, as of the EIA-860M release for 2026-07.
Who owns Edward C Hyatt?
EIA-860M names California Dept. of Water Resources as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
Is this the same as Edward C Hyatt LLC?
Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — California Dept. of Water Resources here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Edward C Hyatt LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Edward C Hyatt still running?
EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.