St Lucie

Nuclear power plant in Florida, United States of America. Approximate location 27.3486, -80.2464.

NuclearFloridaUnited States of America

St Lucie is a 2,160 MW nuclear power station in Florida, United States of America. It is operated by Florida Power & Light Co. Based on reported annual generation of 14,966 GWh, it can supply roughly 4,275,885 homes. It ranks #68 of 9,833 United States of America power plants by installed capacity. Commissioned in 1979, it is around 47 years old — long-established. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, nuclear supplies about 17.4% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

2,160MW installed capacity
14,966GWh reported / yr
4,275,885homes powered
1979commissioned (~47 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0006045.

Reported generation trend

2013: 15,620 GWh20132014: 15,818 GWh20142015: 15,075 GWh20152016: 15,587 GWh20162017: 16,428 GWh20172018: 15,563 GWh20182019: 14,966 GWh201916k GWh

Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by Florida Power & Light Co. All plants by this company →

Local climate & thermal context

This nuclear plant uses heat from nuclear fission to raise steam for a turbine-generator. It sits in a humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 27.3°N — which shapes how much energy it can produce and how its output varies through the year.

23.3°Cannual mean temp
0heating degree-days (base 18°C)
1,957cooling degree-days (base 18°C)
5 melevation

Monthly mean temperature

J: 18 °CJF: 18 °CFM: 20 °CMA: 22 °CAM: 25 °CMJ: 27 °CJJ: 28 °CJA: 28 °CAS: 27 °CSO: 25 °CON: 22 °CND: 19 °CD28 °C

Heating degree-days here run 100% below the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.

Climate heat-demand index: 13/100 — this site sits in the bottom third of the power plants we cover by heating degree-days.

In colder climates, uninsulated hot equipment (boilers, turbines, valves, steam lines) loses proportionally more heat to ambient air — exactly the loss Inzonex modular insulation is designed to cut.

Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.

How it compares & nearby plants

The #22 largest nuclear power plant of 58 in United States of America by capacity.

United States of America has 58 nuclear power plants in this dataset, together about 104,233 MW of capacity.

Nearby power plants

Location

Coordinates 27.3486, -80.2464 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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