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United States β€Ί Power plants β€Ί Coal power plants β€Ί South Dakota

COAL POWER PLANTS Β· OIL-FIRED POWER PLANTS

Big Stone

Big Stone is a 451 MW operating power plant in Grant County, South Dakota, operated by Otter Tail Power Co.

Plant statusOperating
  1. Planning (completed)
  2. Consented (completed)
  3. Construction (completed)
  4. OperatingMay 1975 (current stage)
  5. Closed (not yet reached)

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Generators

Each generating unit EIA lists at this plant.

UnitTechnologyCapacityStatusOnlineRetired / planned retirement
1Conventional Steam Coal450 MW OperatingMay 1975
D1Petroleum Liquids1.0 MW Standby / back-upMay 1975

Plant details

Operator
Otter Tail Power Co
Location
Grant County, South Dakota
Balancing authority
MISO
Sector
Electric Utility
Capacity
Operating: 451 MW
First unit online
May 1975
EIA plant ID
6098

Location

45.3037, -96.5101

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