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150 MW BESS operating in Ada, ID — Idaho Power Company
150 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2025
Operating Since
Coordinates
43.4900, -116.4200
County
Ada, ID
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Kuna BESS, LLC | — | — |
| Owner(s) | Kuna BESS, LLC | — | — |
| Status | Operating | — | — |
Kuna BESS is a 150 MW battery energy storage system located in Ada County, Idaho. The facility, which began operating in 2025, is owned and operated by Kuna BESS, LLC. It is the second-largest battery storage facility in Idaho, and ranks 379th nationally out of 514 such facilities. The plant consists of a single generator utilizing batteries as its primary fuel source, with a storage duration of 4 hours.
The Kuna BESS plant operates within the Western Electricity Coordinating Council (WECC) NERC region. Its balancing authority is the Idaho Power Company. The plant's operations have been noted in grid-related news articles.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
−1.3K MWh
Net Charging
-13.9K MWh
Annual Net Energy
-1.8%
Capacity Factor
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
2023
$1,361/kW
Est. Construction Cost
Total estimated cost: $204.2M
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
Last updated 2026-03-14
View all articlesNo ask pi reports yet for this entity.
ask pi about Kuna BESSIdaho Power Company (IPCO)
Grid Voltage
138.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP