St Stephen — Plant Summary
- EIA Plant ID
- 6789
- Capacity
- 84 MW
- Primary Fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Status
- Operating
- Location
- Berkeley, SC
- Operating Since
- 1985
- Generators
- 3
- Operator
- US Army Corps of Engineers
- Parent Company
- —
- Annual Generation
- 258,562 MWh
- Capacity Factor
- 34.9%
- Balancing Authority
- South Carolina Public Service Authority
- ISO/RTO
- —
- NERC Region
- SERC
St Stephen
OperatingHydro
Ranked #9 of 32 Hydro plants in SC#216 of 1454 nationally
84 MW Hydro operating in Berkeley, SC — South Carolina Public Service Authority
EIAGEMWD
84 MW
Nameplate Capacity
3
Generators
units
Conventional Hydroelectric
Technology
1985
Operating Since
Location
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | US Army Corps of Engineers | South Carolina Public Service Authority | — |
| Owner(s) | US Army Corps of Engineers | US Army Corps of Engineers - Charleston District [100%] | — |
| Status | Operating | operating | — |
Ownership Chain
GEM identifies the owner as US Army Corps of Engineers - Charleston District [100%]
This entity is not yet in the GEM ownership database — chain unavailable.
About
The St Stephen hydroelectric plant is located in Berkeley County, South Carolina. The plant has a total capacity of 84 MW across three generators and began operating in 1985. The primary fuel source is water (WAT), and the plant utilizes conventional hydroelectric technology. The US Army Corps of Engineers is listed as the operator.
St Stephen is the 9th largest power plant in South Carolina out of 33, and ranks 217th nationally out of 1464 plants. The plant's latest annual generation was 258,562 MWh, resulting in a capacity factor of 34.9%. The balancing authority is the South Carolina Public Service Authority, and the plant operates within the SERC NERC region.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
SERC
Balancing Authority
South Carolina Public Service Authority
Grid Voltage
115 kV
Regulatory Status
RE
Entity Type
Federal
Sector
Electric Utility
Generation
17.9K MWh
Latest Month
258.6K MWh
Annual Generation
34.9%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (10)Beta
General
St. Stephen man arrested after deputies say he fled traffic stop, meth found
BERKELEY COUNTY, S.C. (WCIV) — A St. Stephen man is facing drug charges Tuesday after he led deputies on a chase, according to the Berkeley...
WCIV·4 weeks ago
General
St. Stephen man arrested after deputies say he fled traffic stop, meth found
BERKELEY COUNTY, S.C. (WCIV) — A St. Stephen man is facing drug charges Tuesday after he led deputies on a chase, according to the Berkeley...
WCIV·4 weeks ago
General
Proposed gas power plant in Colleton Co. under Public Service Commission review
COLLETON COUNTY, S.C. (WCSC) — A proposed gas power plant in Colleton County is under review by the Public Service Commission,...
Live 5 News·3 months ago
General
Mary SC Obituary (2025) - Greensburg, PA - The Valley News Dispatch
Sister Mary Victor Powers, SC, 88, answered God's call to eternal life on Dec. 12, 2025, at Caritas Christi, the motherhouse of the Sisters...
Legacy | Obituary·3 months ago
Last updated 2026-03-26
View all 10 articles