Diablo Canyon
Nuclear power plant in San Luis Obispo County, California. 2,323 MW of nameplate capacity across 2 generators, operated by Pacific Gas & Electric Co..
Also known as Diablo Canyon Power Plant · EIA plant 6099
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 2,323 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- May 1985First generator online
- Operator
- Pacific Gas & Electric Co.EIA operator ID 14328
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 2 CAISO nodesResource nodes with prices
- Location
- San Luis Obispo County, CA35.2115, −120.8555
- EIA plant ID
- 6099EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Diablo Canyon produces
Free · EIA-923Net generation, 2025
17.6 TWh
17,558,394 MWh, final
Capacity factor, 2025
86.3%
2024: 90.1%
January to July 2026
11.1 TWh
Provisional
Range, 2015 to 2025
16.2–18.9
TWh a year. Low 2019, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 17,008,538 | Not reported | 12 of 12 |
| 2001 | 18,077,713 | Not reported | 12 of 12 |
| 2002 | 16,304,206 | Not reported | 12 of 12 |
| 2003 | 17,285,039 | Not reported | 12 of 12 |
| 2004 | 15,230,437 | Not reported | 12 of 12 |
| 2005 | 17,755,302 | Not reported | 12 of 12 |
| 2006 | 18,390,995 | Not reported | 12 of 12 |
| 2007 | 18,588,490 | Not reported | 12 of 12 |
| 2008 | 17,090,527 | Not reported | 12 of 12 |
| 2009 | 16,264,858 | Not reported | 12 of 12 |
| 2010 | 18,429,925 | 90.6% | 12 of 12 |
| 2011 | 18,566,074 | 91.2% | 12 of 12 |
| 2012 | 17,712,468 | 86.8% | 12 of 12 |
| 2013 | 18,012,439 | 88.5% | 12 of 12 |
| 2014 | 16,985,978 | 83.5% | 12 of 12 |
| 2015 | 18,505,385 | 90.9% | 12 of 12 |
| 2016 | 18,907,578 | 92.7% | 12 of 12 |
| 2017 | 17,901,079 | 88.0% | 12 of 12 |
| 2018 | 18,213,519 | 89.5% | 12 of 12 |
| 2019 | 16,165,384 | 79.4% | 12 of 12 |
| 2020 | 16,258,698 | 79.7% | 12 of 12 |
| 2021 | 16,477,366 | 81.0% | 12 of 12 |
| 2022 | 17,593,254 | 86.5% | 12 of 12 |
| 2023 | 17,718,368 | 87.1% | 12 of 12 |
| 2024 | 18,378,835 | 90.1% | 12 of 12 |
| 2025 | 17,558,394 | 86.3% | 12 of 12 |
| 2026 (provisional, partial year) | 11,118,285 | 94.1% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · CAISOEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
851,880
million gallons
Consumption, 2024
Not reported
million gallons
Source
Pacific Ocean
Surface, Saline. Once-through
Watershed stress
Low · 0.202
USGS SUI, HUC12 Islay Creek-Frontal Pacific Ocean
12 of 12 cooling months report withdrawal. Saline, brackish or ocean intake; not tested. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Nuclear | 1,159.0 | May 1985 |
| 2 | Nuclear | 1,164.0 | March 1986 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Pacific Gas & Electric Co. as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Diablo Canyon
More plants operated by Pacific Gas & Electric Co.
Questions about Diablo Canyon
How much power does Diablo Canyon produce?
Diablo Canyon reported 17,558,394 MWh (17.6 TWh) of net generation in 2025, a 86.3% capacity factor on 2,323 MW of nameplate capacity. From January to July 2026 it reported 11.1 TWh, which is provisional.
Where is Diablo Canyon?
Diablo Canyon is in San Luis Obispo County, California, at 35.2115, −120.8555. It is in the California Independent System Operator balancing area (CISO).
Who operates Diablo Canyon?
EIA-860M for August 2026 lists Pacific Gas & Electric Co. as the operator (EIA operator ID 14328). The operator is not always the owner.
When did Diablo Canyon start operating?
Its first generator began operating in May 1985, according to EIA-860M.
Does InfraMap have power prices for Diablo Canyon?
Yes. InfraMap has CAISO day-ahead and real-time prices at 2 price nodes linked to Diablo Canyon, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- CAISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page