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150 MW BESS under construction in Ada, ID
150 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
—
Operating Since
Coordinates
43.5575, -116.1548
County
Ada, ID
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Idaho Power Co | Idaho Power | — |
| Owner(s) | Idaho Power Co | IDACORP | — |
| Status | Under construction | — | — |
The Boise Bench BESS is a battery energy storage system located in Ada County, Idaho. The plant has a total capacity of 150 MW and consists of a single generator. It is owned by IDACORP and operated by Idaho Power Company. The primary fuel type is electricity (MWH), indicating that it charges from the grid and discharges when needed. The plant operates within the Idaho Power Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.
Boise Bench BESS is the third-largest battery storage facility in Idaho, based on capacity, and ranks 380th nationally out of 514 such facilities. The plant has been the subject of at least one news article related to regulatory matters.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
Idaho Power Company (IPCO)
Grid Voltage
138.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
No generation data available for this plant.
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2023
$1,361/kW
Est. Construction Cost
Total estimated cost: $204.2M
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This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
175 buyers • 333 active contracts
+ 170 more offtakers in the full bridge. Top 5 shown.
Browse source data on FERC EQRLast updated 2026-03-26
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