All industries › Battery storage › Hemmingway BESS
Battery storage · Owyhee County, Idaho
Hemmingway BESS
A 166 MW battery storage project in Owyhee County, Idaho. Hemmingway BESS is built and in service. Public records name Idaho Power Co as its developer. No public record read so far names its builder.
The record
What the public record says about Hemmingway BESS, as of 22 Oct 2026.
| Stage | Operating |
|---|---|
| Construction start | In service since 2025 |
| Size | 166 MW |
| Location | Owyhee County, Idaho (to about 10 km) |
| Developer | Idaho Power Co |
| Grid operator | — |
| Builder (EPC) | Not named yet |
| Trade subcontractors | in the app |
| People to call | in the app |
| Phase windows | in the app |
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What happened
Each change dated by the scene or the document, newest first.
No change on record since Groundtrace started tracking it.
Who was named on it, and when, is in the app.
Also developed by Idaho Power Co
| Project | Stage | Size |
|---|---|---|
| Boise Bench BESSBattery storage · Ada County, Idaho | Operating | 150 MW |
| Happy Valley Battery StorageBattery storage · Canyon County, Idaho | Operating | 82 MW |
| Franklin Battery StorageBattery storage · Twin Falls County, Idaho | Operating | 60 MW |
| Black Mesa BESSBattery storage · Elmore County, Idaho | Operating | 40 MW |
| Elmore BESSBattery storage · Elmore County, Idaho | Operating | 4 MW |
| Weiser BESSBattery storage · Washington County, Idaho | Operating | 3 MW |
Also in Owyhee County
| Project | Stage | Size |
|---|---|---|
| IP request 660Utility solar | Financed | 1,650 MW |
| Murphy Flat SolarUtility solar | Operating | 20 MW |
More
Questions
Hemmingway BESS, in short.
Where is Hemmingway BESS?
Hemmingway BESS is a 166 MW battery storage project in Owyhee County, Idaho. The public page places it to within about ten kilometres; the precise location is in the subscriber record.
When does construction start on Hemmingway BESS?
Hemmingway BESS is built and in service since 2025.
Who is developing Hemmingway BESS?
Idaho Power Co, as the public record names it.
Who is building Hemmingway BESS?
No public record read so far names a builder for Hemmingway BESS. Groundtrace leaves the field empty rather than guess, and fills it when a permit, a filing or the builder's own page names one.
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