Kuna BESS — Plant Summary
- EIA Plant ID
- 67549
- Capacity
- 150 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Operating
- Location
- Ada, ID
- Operating Since
- 2025
- Generators
- 1
- Operator
- Kuna BESS, LLC
- Parent Company
- —
- Annual Generation
- -13,915 MWh
- Capacity Factor
- -1.8%
- Balancing Authority
- Idaho Power Company
- ISO/RTO
- —
- NERC Region
- WECC
Kuna BESS
OperatingBESS
Ranked #2 of 10 BESS plants in ID#238 of 837 nationally
150 MW BESS operating in Ada, ID — Idaho Power Company
EIA
150 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2025
Operating Since
Location
Coordinates
43.4900, -116.4200
County
Ada, ID
Nearby Plants
- MC6 Hydro FacilityHydro2.3 MW · 5.3 km
- Mora Drop Hydroelectric ProjectHydro1.7 MW · 5.4 km
- Happy Valley Battery StorageBESS82 MW · 10.0 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Kuna BESS, LLC | — | — |
| Owner(s) | Kuna BESS, LLC | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
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
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Idaho Power Company
Grid Voltage
138 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Interconnection Queue2 projectsBeta
ActiveBattery150 MWWestLBNL
Generation
−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.
Financial Data
No financial data available for this plant.
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (3)Beta
Grid·capacity addition
Prevalon brings 80-MW battery storage online for Idaho Power
Idaho Power could add an additional 705 MW of storage in the next four years, per its draft integrated resource plan.
Prevalon (other)Idaho Power (other)
Utility Dive·9 months ago
Grid·capacity addition
Prevalon Will Provide Second Energy Storage System for Idaho Power
A Florida-based battery energy storage provider is teaming with Idaho's largest electric utility for a 200-MW/800-MWh battery energy storage system (BESS)...
Prevalon (other)Idaho Power (other)
POWER Magazine·1 years ago
General
You Asked: Is Tesla building a factory in Kuna?
Rumblings of a Tesla battery plant coming to Kuna made their way through the community recently, causing mixed reactions from residents...
Boise Dev·2 years ago
Last updated 2026-03-14
View all articles