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84 MW Hydro operating in Berkeley, SC
84 MW
Nameplate Capacity
3
Generators
units
Conventional Hydroelectric
Technology
1985
Operating Since
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Request a demo →| 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 | — |
| Status | Operating | operating | — |
GEM identifies the owner as US Army Corps of Engineers - Charleston District
This entity is not yet in the GEM ownership database — chain unavailable.
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
Grid Region
Southeast
Market
SEEM Participant
NERC Region
SERC — SERC Reliability Corporation
Balancing Authority
South Carolina Public Service Authority (SC)
Grid Voltage
115.0 kV
Regulatory Status
RE — Regulated
Entity Type
Federal
Sector
Electric Utility
17.9K MWh
Latest Month
258.6K MWh
Annual Generation
34.9%
Capacity Factor
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Request a demo →2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $192.7M
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Request a demo →This plant's balancing authority participates in the Southeast Energy Exchange Market (SEEM). SEEM is a bilateral exchange — no public nodal pricing.
Last updated 2026-03-26
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