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United States β€Ί Power plants β€Ί Hydroelectric plants β€Ί South Dakota

HYDROELECTRIC PLANTS

Oahe

Oahe is a 786 MW operating hydroelectric plant in Hughes County, South Dakota, operated by USACE-Omaha.

Plant statusOperating
  1. Planning (completed)
  2. Consented (completed)
  3. Construction (completed)
  4. OperatingApr 1962 (current stage)
  5. Closed (not yet reached)

Open in Google MapsMore hydroelectric plants in South Dakota

Generators

Each generating unit EIA lists at this plant.

UnitTechnologyCapacityStatusOnlineRetired / planned retirement
1Conventional Hydroelectric112 MW OperatingApr 1962
2Conventional Hydroelectric112 MW OperatingDec 1962
3Conventional Hydroelectric112 MW OperatingJul 1962
4Conventional Hydroelectric112 MW OperatingOct 1962
5Conventional Hydroelectric112 MW OperatingMar 1963
6Conventional Hydroelectric112 MW OperatingMay 1963
7Conventional Hydroelectric112 MW OperatingJun 1963

Plant details

Operator
USACE-Omaha
Location
Hughes County, South Dakota
Balancing authority
SWPP
Sector
Electric Utility
Capacity
Operating: 786 MW
First unit online
Apr 1962
EIA plant ID
3356

Location

44.4504, -100.3866

Nearby power plants

Source: U.S. Energy Information Administration, Form EIA-860M, September 2026. Planned dates are targets reported by the developer and often change. Report a problem