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587.2 MW Hydro operating in Fairfield, SC
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
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| 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
Grid Region
Southeast
Market
SEEM Participant
NERC Region
SERC — SERC Reliability Corporation
Balancing Authority
Dominion Energy South Carolina (SCEG)
Grid Voltage
230.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
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.
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South Carolina Electric & Gas Company · Data from 2015–2024
$408/kW
Installed Cost
$9.3/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
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This plant's balancing authority participates in the Southeast Energy Exchange Market (SEEM). SEEM is a bilateral exchange — no public nodal pricing.
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-03-26
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