How many nuclear power plants are in South Carolina?

4, with 7 GW of nameplate capacity between them, spread over 4 counties. That is the EIA-860M operating count for 2026-07.

Is there a map of South Carolina nuclear power plants?

Yes — the map above. Each dot is one nuclear power plant, sized by nameplate capacity and placed at the coordinates EIA files for it.

Which is the largest nuclear power plant in South Carolina?

Oconee, at 3 GW. The table is sorted largest first, so the rest follow it.

Is there a nuclear power plant near me in South Carolina?

The county roll-up below groups every plant by county, which is the quickest way to find the one closest to a given town.

Which grid operator runs South Carolina's nuclear power plants?

No single ISO or RTO covers most of them. EIA files each plant against its own balancing authority, which in South Carolina is largely a vertically integrated utility rather than an organised market.

How current is this, and what is left out?

EIA-860M for 2026-07. EIA technology "Nuclear" — commercial reactors reporting on EIA-860M. Plants below 1 MW are not surveyed by EIA and so are absent; retirements and additions after 2026-07 arrive with the next monthly release.

Nuclear Power Plants in South Carolina

Every operating nuclear power plant in South Carolina on EIA-860M for 2026-07: 4 plants, 7 reactors and 7 GW of nameplate capacity across 4 counties.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Plants: 4; 7 generating units
Nameplate capacity: 7 GW
Counties: 4
Grid operator: Mixed; no single ISO covers a majority

Map of nuclear power plants in South Carolina

Every one of the 4 plants is drawn at the coordinate EIA files for it.

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Nuclear · 4

List of nuclear power plants in South Carolina

Sort by any column. Capacity is nameplate, summed across every generating unit EIA lists at the site.

nuclear power plants in South Carolina

OconeeNuclear	Duke Energy Carolinas, LLC	Oconee	2,666.7	3	1973	Operating
CatawbaNuclear	Duke Energy Carolinas, LLC	York	2,410.2	2	1985	Operating
V C SummerNuclear	Dominion Energy South Carolina, Inc	Fairfield	1,029.6	1	1984	Operating
H B RobinsonNuclear	Duke Energy Progress - (NC)	Darlington	768.6	1	1971	Operating

Largest nuclear power plants in South Carolina

1OconeeOconee County, South Carolina2,666.7 MW
2CatawbaYork County, South Carolina2,410.2 MW
3V C SummerFairfield County, South Carolina1,029.6 MW
4H B RobinsonDarlington County, South Carolina768.6 MW

Nuclear power plants by county in South Carolina

The county EIA files against each plant. It is the fastest way to find the plant nearest a given town.

County	Plants	Nameplate MW
Oconee	1	2,666.7
York	1	2,410.2
Fairfield	1	1,029.6
Darlington	1	768.6

Nuclear Power Plants in South Carolina: FAQ

How many nuclear power plants are in South Carolina?: 4, with 7 GW of nameplate capacity between them, spread over 4 counties. That is the EIA-860M operating count for 2026-07.
Is there a map of South Carolina nuclear power plants?: Yes — the map above. Each dot is one nuclear power plant, sized by nameplate capacity and placed at the coordinates EIA files for it.
Which is the largest nuclear power plant in South Carolina?: Oconee, at 3 GW. The table is sorted largest first, so the rest follow it.
Is there a nuclear power plant near me in South Carolina?: The county roll-up below groups every plant by county, which is the quickest way to find the one closest to a given town.
Which grid operator runs South Carolina's nuclear power plants?: No single ISO or RTO covers most of them. EIA files each plant against its own balancing authority, which in South Carolina is largely a vertically integrated utility rather than an organised market.
How current is this, and what is left out?: EIA-860M for 2026-07. EIA technology "Nuclear" — commercial reactors reporting on EIA-860M. Plants below 1 MW are not surveyed by EIA and so are absent; retirements and additions after 2026-07 arrive with the next monthly release.