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Sequoyah nuclear power plant

Sequoyah nuclear power plant is a nuclear power station in United States with 2 operating units totalling 2,421 MW gross. The site has 2 units on record in total.

Operating4Under construction1Pre-construction1circle area ∝ site capacitydashed = approximate position Coastlines, borders and lakes: Natural Earth (1:10 million, public domain), which is generalised, so a coastal plant can sit a couple of kilometres off its true shoreline. Site positions: Global Nuclear Power Tracker.
Units on record
2
Operating
2
Operating capacity
2,421MW

Units

UnitStatusTypeModelGross MWOnline
Unit 1 Operating PWR WH 4LP (ICECND) 1,221 1981
Unit 2 Operating PWR WH 4LP (ICECND) 1,200 1982

Unit by unit

Each unit's rating, type and milestone dates as recorded by the Global Nuclear Power Tracker, with any correction we made to it. A dash or "not disclosed" means the source does not give the value.

Sequoyah nuclear power plant 1 Operating

Reactor typePressurised water reactor (PWR)
ModelWestinghouse 4-loop
Size classLarge
Gross capacity1,221MW
Net capacity1,152MW
Thermal output3,455MWt
Enrichment3–5% U-235
NSSS vendorWestinghouse Electric Company
OwnerTennessee Valley Authority100%
OperatorTennessee Valley Authority
Construction start27 May 1970
First criticality5 Jul 1980
Grid connection22 Jul 1980
Commercial operation1 Jul 1981

Live status, outage record and fuel chain for Sequoyah nuclear power plant 1

Sequoyah nuclear power plant 2 Operating

Reactor typePressurised water reactor (PWR)
ModelWestinghouse 4-loop
Size classLarge
Gross capacity1,200MW
Net capacity1,139MW
Thermal output3,455MWt
Enrichment3–5% U-235
NSSS vendorWestinghouse Electric Company
OwnerTennessee Valley Authority100%
OperatorTennessee Valley Authority
Construction start27 May 1970
First criticality5 Nov 1981
Grid connection23 Dec 1981
Commercial operation1 Jun 1982

Live status, outage record and fuel chain for Sequoyah nuclear power plant 2

Sequoyah nuclear power plant in context

By gross operating capacity Sequoyah nuclear power plant is the 14th largest of 54 operating nuclear sites in the United States, holding 2% of the country's operating capacity, and ranks 65th of 172 worldwide.

Its operating units started up between 1981 and 1982; the median unit is 44.5 years old, younger than the median of 45.0 in the United States.

The 2 units with both construction and grid dates on record took 10.2 to 11.6 years (median 10.9) from construction start to grid connection; the median across all reactors connected in the 1980s is 7.3 years.

The nearest other tracked nuclear sites are Watts Bar nuclear power plant (50 km), Browns Ferry nuclear power plant (194 km) and Oconee nuclear power plant (205 km).

2 operating units are rated differently now from their design net capacities: Unit 1 +0.3% and Unit 2 -0.8%.

Build time by unit

UnitConstruction startGrid connectionYearsFleet median, same decade
Unit 11970198010.27.3 (1980s)
Unit 21970198111.67.3 (1980s)

Nearest tracked nuclear sites

How these are worked out: ranks use gross operating capacity; ages count from the start-up year on record, as on the age page; build times run from construction start to grid connection, as on the build-times page; ratings are the tracker's net and design net capacity, as on the uprates page. Distances are straight-line between exact positions, so a site with only an approximate position gets none. A unit missing a date or a rating is left out of the figure that needs it.

Site detail
LocationTennessee, United States
Coordinates35.2267, -85.0917
Elevationabout 230 mabove sea level
SettingAbout 490 km from the sea
RegionNorthern America
Units by status
Operating: 2

Elevation is read at the listed coordinates from a 30 m terrain model (SRTM 30 m). Two independent models differ by a median of 6 m across our plants and by up to about 40 m on steep or coastal ground, and a point on a shoreline can read as sea level. Distance to the water is measured to a generalised 1:10 million coastline, so a few kilometres or less is not resolved. This is context, not a design-basis or flood-risk figure.

Owners & operators
Owners
Tennessee Valley Authority
Operators
Tennessee Valley Authority

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Sources

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