South Texas Nuclear Generating Station
| South Texas Project (STP) Electric Generating Station | |
|---|---|
South Texas Project, Units 1 & 2 (NRC image) | |
| Official name | South Texas Project Electric Generating Station |
| Country | United States |
| Location | Matagorda County, near Bay City, Texas |
| Coordinates | 28°47′44″N 96°2′56″W / 28.79556°N 96.04889°W |
| Status | Operational |
| Construction began | December 22, 1975 |
| Commission date | Unit 1: August 25, 1988 Unit 2: June 19, 1989 |
| Construction cost | Units 1–2: $12.55 billion (USD 2010) or $17.1 billion in 2023 dollars |
| Owners | Constellation Energy (44%) City of San Antonio (40%) City of Austin (16%) |
| Operator | STP Nuclear Operating Company (STPNOC) |
| Nuclear power station | |
| Reactor type | PWR |
| Reactor supplier | Westinghouse |
| Cooling source | Main Cooling Reservoir (7,000 acres (2,800 ha), up to 202,600 acre-feet (249,900,000 m3) of cooling water storage, filled by pumping water from the Colorado River) |
| Thermal capacity | 2 × 3853 MWth |
| Power generation | |
| Units operational | 2 × 1280 MW |
| Make and model | WH 4-loop (DRYAMB) |
| Units cancelled | 2 × 1350 MW ABWR |
| Nameplate capacity | 2560 MW |
| Capacity factor | 97.16% (Unit 1, 2017-2019) 98.75% (Unit 2, 2017-2019) 85.6% (Unit 1, lifetime) 85.1% (Unit 2, lifetime) |
| Annual net output | 21,920 GWh (2022) |
| External links | |
| Website | www.stpnoc.com |
| Commons | Related media on Commons |
The South Texas Project Electric Generating Station (also known as STP, STPEGS, South Texas Project), is a nuclear power station southwest of Bay City, Texas, United States. STP occupies a 12,200-acre (4,900 ha) site west of the Colorado River about 90 miles (140 km) southwest of Houston. It consists of two Westinghouse Pressurized Water Reactors and is cooled by a 7,000-acre (2,800 ha) reservoir, which eliminates the need for cooling towers.