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United States › Power plants › Battery storage › Idaho

BATTERY STORAGE

Black Mesa BESS

Black Mesa BESS is a 40.0 MW operating battery storage site in Elmore County, Idaho, operated by Idaho Power Co. Its batteries store up to 160 MWh.

Plant statusOperating
  1. Planning (completed)
  2. Consented (completed)
  3. Construction (completed)
  4. OperatingSep 2024 (current stage)
  5. Closed (not yet reached)

Open in Google MapsMore battery storage sites in Idaho

Generators

Each generating unit EIA lists at this plant.

UnitTechnologyCapacityStatusOnlineRetired / planned retirement
1Batteries40 MW
160 MWh
OperatingSep 2024

Plant details

Operator
Idaho Power Co
Location
Elmore County, Idaho
Balancing authority
IPCO
Sector
Electric Utility
Capacity
Operating: 40.0 MW
First unit online
Sep 2024
EIA plant ID
66326

Location

42.9084, -115.1813

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