Franklin Battery Storage — Plant Summary
- EIA Plant ID
- 67183
- Capacity
- 60 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Operating
- Location
- Twin Falls, ID
- Operating Since
- 2025
- Generators
- 1
- Operator
- Idaho Power Co
- Parent Company
- IDACORP
- Annual Generation
- -8,975 MWh
- Capacity Factor
- -1.7%
- Balancing Authority
- Idaho Power Company
- ISO/RTO
- —
- NERC Region
- WECC
Franklin Battery Storage
OperatingBESS
Ranked #5 of 10 BESS plants in ID#387 of 837 nationally
60 MW BESS operating in Twin Falls, ID — Idaho Power Company
EIA
60 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2025
Operating Since
Location
Coordinates
42.1930, -114.6101
County
Twin Falls, ID
Nearby Plants
- Franklin Solar HybridSolar100 MW · 1.3 km
- Jackpot Solar, LLCSolar120 MW · 1.9 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Idaho Power Co | Idaho Power | — |
| Owner(s) | Idaho Power Co | IDACORP | — |
| Status | Operating | — | — |
Ownership Chain
About
Franklin Battery Storage is a 60 MW battery energy storage system located in Twin Falls County, Idaho. The plant, which began operating in 2025, utilizes batteries as its primary fuel source (MWH) and has a storage duration of 4 hours. It is owned by IDACORP and operated by Idaho Power Company. The facility has one generator.
The plant operates within the Idaho Power Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. According to available rankings, Franklin Battery Storage is the 5th largest of 10 battery storage facilities in Idaho, and ranks 580th out of 1205 nationally.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Idaho Power Company
Grid Voltage
345 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
−326 MWh
Net Charging
-9.0K MWh
Annual Net Energy
-1.7%
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 (10)Beta
Regulatory·permitting
Idaho Power Company; Notice of Intent To File License Application, Filing of Pre-Application Document, and Approving Use of the Traditional Licensing Process
Federal Register (FERC)·3 days ago
General
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Last updated 2026-03-25
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