All industries › Battery storage › Weiser BESS
Battery storage · Washington County, Idaho
Weiser BESS
A 3 MW battery storage project in Washington County, Idaho. Weiser 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 Weiser BESS, as of 22 Oct 2026.
| Stage | Operating |
|---|---|
| Construction start | In service since 2025 |
| Size | 3 MW |
| Location | Washington 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
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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 |
|---|---|---|
| Hemmingway BESSBattery storage · Owyhee County, Idaho | Operating | 166 MW |
| 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 |
Also in Washington County
| Project | Stage | Size |
|---|---|---|
| IP request 790Utility solar | Queued | 122 MW |
More
Questions
Weiser BESS, in short.
Where is Weiser BESS?
Weiser BESS is a 3 MW battery storage project in Washington 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 Weiser BESS?
Weiser BESS is built and in service since 2025.
Who is developing Weiser BESS?
Idaho Power Co, as the public record names it.
Who is building Weiser BESS?
No public record read so far names a builder for Weiser 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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