St. Lucie Nuclear Power Plant is a twin

nuclear power station A nuclear power plant (NPP) is a thermal power station in which the heat source is a nuclear reactor. As is typical of thermal power stations, heat is used to generate steam that drives a steam turbine connected to a generator that produces elec ...

located on Hutchinson Island, near

Port St. Lucie Port St. Lucie is a city in St. Lucie County, Florida, United States. It is the most populous municipality in the county with a population of 204,851 at the 2020 census. It is located southeast of Orlando and north of Miami. The Port St. Lu ...

St. Lucie County St. Lucie County ( es, Condado de Santa Lucía, link=) is a county in the U.S. state of Florida. As of the 2020 census, the population was 329,226. The county's seat is Fort Pierce. St. Lucie County is included in the Port St. Lucie, FL Metro ...

Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...

. Both units are

Combustion Engineering Combustion Engineering (C-E) was a multi-national American-based engineering firm that developed nuclear steam supply power systems in the United States. Originally headquartered in New York City, C-E moved its corporate offices to Stamford, Connec ...

pressurized water reactor A pressurized water reactor (PWR) is a type of light-water reactor, light-water nuclear reactor. PWRs constitute the large majority of the world's nuclear power plants (with notable exceptions being the UK, Japan and Canada). In a PWR, the primary ...

Florida Power & Light Florida Power & Light Company (FPL), the principal subsidiary of NextEra Energy Inc. (formerly FPL Group, Inc.), is the largest power utility in Florida. It is a Juno Beach, Florida-based power utility company serving roughly 5 million customer ...

commissioned the station in 1976 and continues to operate the station. Minor shares of Unit 2 are owned by the

Florida Municipal Power Agency The Florida Municipal Power Agency (FMPA) is a nonprofit, wholesale electric utilities and associated services company that serves its 31 Florida municipal electric utility system members. Based in Tallahassee, with its operational offices in Orl ...

(8.81%) and the

Orlando Utilities Commission The Orlando Utilities Commission (OUC: "The ''Reliable'' One") is a municipally-owned public utility providing water and electric service to the citizens of Orlando, Florida and portions of adjacent unincorporated areas of Orange County, as wel ...

(6.08%). The plant contains two nuclear reactors in separate

containment building A containment building is a reinforced steel, concrete or lead structure enclosing a nuclear reactor. It is designed, in any emergency, to contain the escape of radioactive steam or gas to a maximum pressure in the range of . The containment i ...

s. However, the plant does not have the classic

hyperboloid In geometry, a hyperboloid of revolution, sometimes called a circular hyperboloid, is the surface generated by rotating a hyperbola around one of its principal axes. A hyperboloid is the surface obtained from a hyperboloid of revolution by defo ...

cooling tower A cooling tower is a device that rejects waste heat to the atmosphere through the cooling of a coolant stream, usually a water stream to a lower temperature. Cooling towers may either use the evaporation of water to remove process heat and ...

s found at many inland reactor sites; instead, it uses nearby ocean water for coolant of the secondary system. In 2003 the

Nuclear Regulatory Commission The Nuclear Regulatory Commission (NRC) is an independent agency of the United States government tasked with protecting public health and safety related to nuclear energy. Established by the Energy Reorganization Act of 1974, the NRC began operat ...

(NRC) extended the operating licenses of the St. Lucie units by twenty years, to March 1, 2036 for Unit 1 and April 6, 2043 for Unit 2.

Extended Power Uprate

In 2012, Extended Power Uprate modifications were completed, increasing the electric output from approximately 853 MW to 1,002 MW. The project involved replacing pipes, valves, pumps, heat exchangers, electrical transformers, and generators, some of which were original components of the plant.

Electricity Production

Surrounding population

The

defines two emergency planning zones around nuclear power plants: a plume exposure pathway zone with a radius of , concerned primarily with exposure to, and inhalation of, airborne radioactive contamination, and an ingestion pathway zone of about , concerned primarily with ingestion of food and liquid contaminated by radioactivity. The 2010 U.S. population within of Saint Lucie was 206,596, an increase of 49.7 percent in a decade, according to an analysis of U.S. Census data for msnbc.com. The 2010 U.S. population within was 1,271,947, an increase of 37.0 percent since 2000. Cities within 50 miles include Port St. Lucie (7.8 miles to city center), Ft. Pierce (8 miles to city center), Stuart and West Palm Beach (42 miles to city center).

Seismic risk

The Nuclear Regulatory Commission's estimate of the risk each year of an earthquake intense enough to cause core damage to the reactor at Saint Lucie was 1 in 21,739, according to an NRC study published in August 2010.

Hurricane risk

In 2016 St. Lucie Power Plant shut down because of

Hurricane Matthew Hurricane Matthew was an extremely powerful Atlantic hurricane which caused catastrophic damage and a humanitarian crisis in Haiti, as well as widespread devastation in the southeastern United States. The deadliest Atlantic hurricane sinc ...

. In 2017 the plant did not shut down due to

Hurricane Irma Hurricane Irma was an extremely powerful Cape Verde hurricane that caused widespread destruction across its path in September 2017. Irma was the first Category 5 hurricane to strike the Leeward Islands on record, followed by Maria two ...

Extended Power Uprate

Electricity Production

Surrounding population

Seismic risk

Hurricane risk

See also