South Texas Nuclear Generating Station

South Texas Project (STP) Electric Generating Station
South Texas Project, Units 1 and 2 (NRC image)
South Texas Project, Units 1 & 2 (NRC image)
Map
Official nameSouth Texas Project Electric Generating Station
CountryUnited States
LocationMatagorda County, near Bay City, Texas
Coordinates28°47′44″N 96°2′56″W / 28.79556°N 96.04889°W / 28.79556; -96.04889
StatusOperational
Construction beganDecember 22, 1975 (1975-12-22)
Commission dateUnit 1: August 25, 1988
Unit 2: June 19, 1989
Construction costUnits 1–2: $12.55 billion (USD 2010) or $17.1 billion in 2023 dollars[1]
OwnersConstellation Energy (44%)
City of San Antonio (40%)
City of Austin (16%)
OperatorSTP Nuclear Operating Company (STPNOC)
Nuclear power station
Reactor typePWR
Reactor supplierWestinghouse
Cooling sourceMain 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 capacity2 × 3853 MWth
Power generation
Units operational2 × 1280 MW
Make and modelWH 4-loop (DRYAMB)
Units cancelled2 × 1350 MW ABWR
Nameplate capacity2560 MW
Capacity factor97.16% (Unit 1, 2017-2019)
98.75% (Unit 2, 2017-2019)[2]
85.6% (Unit 1, lifetime)[3]
85.1% (Unit 2, lifetime)[4]
Annual net output21,920 GWh (2022)
External links
Websitewww.stpnoc.com
CommonsRelated 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.

  1. ^ Johnston, Louis; Williamson, Samuel H. (2023). "What Was the U.S. GDP Then?". MeasuringWorth. Retrieved November 30, 2023. United States Gross Domestic Product deflator figures follow the MeasuringWorth series.
  2. ^ NextAxiom, A message from (2023-07-05). "U.S. nuclear capacity factors: Resiliency and new realities". American Nuclear Society -- ANS. Retrieved 2023-07-05.
  3. ^ "Reactor Details". PRIS. 1975-12-22. Retrieved 2023-07-05.
  4. ^ "Reactor Details". PRIS. 1975-12-22. Retrieved 2023-07-05.