587.2 MW Hydro operating in Fairfield, SC — Dominion Energy South Carolina
587.2 MW
Nameplate Capacity
8
Generators
units
Hydroelectric Pumped Storage
Technology
1978
Operating Since
Coordinates
34.3061, -81.3308
County
Fairfield, SC
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Dominion Energy South Carolina, Inc | Dominion Energy South Carolina | — |
| Owner(s) | Dominion Energy South Carolina, Inc | Dominion Energy | — |
| Status | Operating | operating | — |
Fairfield Pumped Storage is a hydroelectric pumped storage power plant located in Fairfield County, South Carolina. The plant, which began operating in 1978, has a total capacity of 587.2 MW across 8 generators. It is owned and operated by Dominion Energy South Carolina, Inc., a subsidiary of Dominion Energy. The plant uses water as its primary fuel source. Fairfield Pumped Storage ranks as the 3rd largest of 7 hydroelectric plants in South Carolina, and 43rd out of 194 nationally.
In the latest year of reported data, the plant generated 478,752 MWh of electricity, resulting in a capacity factor of 9.3%. The plant operates within the Dominion Energy South Carolina balancing authority and the SERC NERC region. Financial data indicates an installed cost of $491.21 per kW, based on FERC filings.
Generated from EIA, GEM, and public data sources
NERC Region
SERC
Balancing Authority
Dominion Energy South Carolina
Grid Voltage
230 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
24.2K MWh
Net Discharge
478.8K MWh
Annual Net Energy
9.3%
Capacity Factor
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
$408/kW
Installed Cost
$9.3/MWh
Operating Cost
South Carolina Electric & Gas Company
Reporting Utility
Cumulative Installed Cost
Per-Unit Cost Trends
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
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Last updated 2026-03-26
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