Diablo Canyon Nuclear Power Plant
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Diablo Canyon Power Plant
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 Location of Diablo Canyon Power Plant in California
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| Country | United States |
| Location | San Luis Obispo County, California |
| Coordinates | 35°12′39″N 120°51′22″W / 35.21083°N 120.85611°WCoordinates: 35°12′39″N 120°51′22″W / 35.21083°N 120.85611°W |
| Status | Operational |
| Construction began | Unit 1: April 23, 1968 Unit 2: December 9, 1970 |
| Commission date | Unit 1: May 7, 1985 Unit 2: March 13, 1986 |
| Decommission date | 2025 (planned) |
| Construction cost | $11.556 billion (2007 USD) |
| Owner(s) | Pacific Gas & Electric |
| Operator(s) | Pacific Gas & Electric |
| Nuclear power station | |
| Reactor type | PWR |
| Reactor supplier | Westinghouse |
| Cooling source | North Pacific Ocean |
| Power generation | |
| Units operational | 1 × 1138 MW 1 × 1118 MW |
| Make and model | WH 4-loop (DRYAMB) |
| Thermal capacity | 2 × 3411 MWth |
| Nameplate capacity | 2256 MW |
| Capacity factor | 95.84% |
| 2016 output | 18,941 GW·h |
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Website Diablo Canyon Power Plant |
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The Diablo Canyon Power Plant is an electricity-generating nuclear power plant near Avila Beach in San Luis Obispo County, California. After the permanent shutdown of the San Onofre Nuclear Generating Station in 2013 it is the only nuclear plant operational in the state. The plant has two Westinghouse-designed 4-loop pressurized-water nuclear reactors operated by Pacific Gas & Electric.
The facility is located on about 900 acres (360 ha) west of Avila Beach, California, of which about 12 acres form the power-producing portion of the plant. Together, the twin 1,100 MWe reactors produce about 18,000 GW·h of electricity with zero carbon emissions annually, about 8.6% of the electricity California uses, supplying the electrical needs of more than 3 million people. It was built less than a mile from the Shoreline fault line, which was not known to exist at the time of construction, and is located less than three miles from the Hosgri fault.
The plant is located in Nuclear Regulatory Commission Region IV. In November 2009, PG&E applied to the Nuclear Regulatory Commission (NRC) for 20-year license renewals for both reactors.
In June 2016, PG&E announced that it plans to close Diablo Canyon in 2025. This will make California free of operating commercial nuclear power plants, but will mean the loss of 2256 MW of generation that produced over 18 GWh of carbon-free electricity per year.
Unit One is a 1138 MWe pressurized water reactor supplied by Westinghouse. It went online on May 7, 1985 and is licensed to operate through November 2, 2024. In 2006, Unit One generated 9,944,983 MW·h of electricity, at a nominal capacity factor of 101.2 percent.
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