Diablo Canyon
Diablo Canyon is a 2 GW nuclear power plant in San Luis Obispo County, California, operated by Pacific Gas & Electric Co.. EIA-860M lists 2 generating units here, inside CAISO. Its units entered service between 1985 and 1986.
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
- 2,323 MW
- 2,240 MW net summer
- Generating units
- 2
- In service
- 1985–1986
- EIA plant ID
- 6099
Where it is
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- County
- San Luis Obispo County, California
- Coordinates
- 35.2115, -120.8555
- Balancing authority
- CISO
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- Pacific Gas & Electric Co.
- Primary energy source
- Nuclear
- Technologies
- Nuclear
- Status
- Operating
Diablo Canyon: FAQ
- Where is Diablo Canyon?
- In San Luis Obispo 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 Diablo Canyon?
- 2 GW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
- Who owns Diablo Canyon?
- EIA-860M names Pacific Gas & Electric Co. 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 Diablo Canyon LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Pacific Gas & Electric Co. 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 "Diablo Canyon LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Diablo Canyon still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.