FieldProspects

Washington County, Idaho

Washington County, Idaho has 6 power projects in the FieldProspects database, all of them operating, 678 MW in total, with nothing in the queue. No data center record lists the county. Hydro leads with 675 MW across 5 projects. Data as of October 8, 2026.

Data as of Grid region: Idaho PowerRefreshed monthly
6
power projects, planned and operating
0MW
planned generation, 0 projects
678MW
operating generation, 6 projects
0
planned projects past their listed in-service date
Map

Washington County and its neighbors

Counties shaded by data center MW on record, planned to operating. None of its 3 neighboring counties has a page yet; their figures are in the member database.

Gem Payette Adams Washington no data centers
no data center MWunder 100 MW100 to 1,000 MW1,000 to 5,000 MW5,000 to 15,000 MW15,000 MW or more no page yet

Data center records planned, under construction and operating, data as of October 8, 2026.Hover a county for its numbers

Headline finding
678MW

of operating generation across 6 plants, and nothing in the interconnection queue for Washington County.

Operating generation678 MW
Planned generation0 MW

Technology mix

6 projects, 678 MW planned and operating

Hydro675 MW5 projects, 100%
Battery Storage3 MW1 project, 0%
Which companies own these 6 projects?Project names, developers and contacts are for members.See what members get

Power generation in the county

6 plants operate inside Washington County, 678 MW of hydro and battery storage. Nothing is in the queue for the county.

Figure 1

Operating and planned generation by technology

MW in Washington County

OperatingPlanned
HydroOperating 675 MW 5 projects
Battery StorageOperating 3 MW 1 project
View as table
TechnologyStatusProjectsMW
HydroOperating5675
Battery StorageOperating13
Operating: 678 MW. Planned: 0 MW. Nothing is in the queue to add to it.
Source. FieldProspects database: ISO/RTO interconnection queues, EIA-860M and public data center filings, data as of October 8, 2026.

Every record in Washington County

Project name, developer, status, MW, in-service year and the developer’s contacts, for all 6 records. Filter, sort and export to Excel.

Members only
County: Washington County, IDStatus: all except cancelledSort: MW, largest first 6 records
Project or campusDeveloperStatusMWYearContacts
6 records and 678 MW behind this preview

Rows are hidden on public pages. Members see every field and can export up to 1,000 rows a month on Solo, unlimited on Unlimited.

Request access

Get alerts for Washington County

We email you when a data center or power project in Washington County is added, changes status, signs an interconnection agreement or slips its date. One email per snapshot, only when something changed.

One email per snapshot, only when something changed. Unsubscribe any time.

Open every campus, project and contact in Washington County.

Solo is $250 a month for one user. Unlimited is $500 for your whole team. Cancel any time.