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United States › Power plants › Hydroelectric plants › Montana

HYDROELECTRIC PLANTS

Yellowtail

Yellowtail is a 278 MW operating hydroelectric plant in Big Horn County, Montana, operated by U S Bureau of Reclamation.

Plant statusOperating
  1. Planning (completed)
  2. Consented (completed)
  3. Construction (completed)
  4. OperatingAug 1966 (current stage)
  5. Closed (not yet reached)

Open in Google MapsMore hydroelectric plants in Montana

Generators

Each generating unit EIA lists at this plant.

UnitTechnologyCapacityStatusOnlineRetired / planned retirement
1Conventional Hydroelectric72 MW OperatingNov 1966
3Conventional Hydroelectric72 MW OperatingAug 1966
4Conventional Hydroelectric72 MW OperatingAug 1966
2Conventional Hydroelectric63 MW OperatingOct 1966

Plant details

Operator
U S Bureau of Reclamation
Location
Big Horn County, Montana
Balancing authority
WAUW
Sector
Electric Utility
Capacity
Operating: 278 MW
First unit online
Aug 1966
EIA plant ID
2204

Location

45.3074, -107.9575

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