Washington · 2 industries

Solar and battery storage projects in Washington

59 utility solar and 20 battery storage projects are in development in Washington, 5 of them under construction, with 11 already operating. 5 counties with 5 or more have a page of their own. Who is building each one, and who to call, is in the app.

Request access By county

79in development

0of them pre-construction

5of them under construction

11operating

70 queued1 permitted3 financed5 under construction

By industry

Washington, industry by industry.

Utility solar in Washington59 in development3 under construction10 operating

Battery storage in Washington20 in development2 under construction1 operating

Breaking ground next

Next to start work in Washington.

Up to three projects per industry in Washington, closest to breaking ground first.

Utility solar

BPA request G0598Klickitat County
Financed · 160 MW · start est. 2026 Q3
Builder: not yet named
High Top SolarYakima County
Permitted · 80 MW · start est. 2027 Q3
Builder: not yet named
BPA request G0847Columbia County
Financed · 150 MW · start est. 2026 Q1
Builder: not yet named

Battery storage

BPA request G0656Grant County
Financed · 500 MW · start est. 2027 Q4
Builder: not yet named
BPA request G0608Klickitat County
Queued · 1,200 MW · start est. 2026 Q4
Builder: not yet named
BPA request G0717Klickitat County
Queued · 75 MW · start est. 2026 Q4
Builder: not yet named

By county

Washington, county by county.

Counties with 5 or more projects in development, most first. Each has a page with every project in development there.

County	Utility solar	Battery storage	In development	Under construction
Benton County	15	2	17	0
Klickitat County	14	3	17	1
Grant County	8	2	10	2
Yakima County	8	1	9	0
Douglas County	5	3	8	0

Fewer than 5 in development: Franklin County (4), Columbia County (2), Garfield County (2), Adams County (1), Clark County (1), Cowlitz County (1), King County (1), Kitsap County (1), Lewis County (1), Lincoln County (1), Mason County (1), Pierce County (1), Snohomish County (1), Thurston County (1).

Questions

Washington, in short.

How many construction projects are in development in Washington?

79 solar and battery storage projects are in development in Washington: 59 utility solar and 20 battery storage projects. 5 of them are under construction, and 11 more are already operating.

Which counties in Washington have the most projects in development?

Benton County (17), Klickitat County (17), Grant County (10), Yakima County (9) and Douglas County (8).

Where does the Washington data come from?

From public records read daily for each industry (13 sources for utility solar and 10 sources for battery storage): grid interconnection queues, construction permits, county records, state siting and procurement filings, and satellite imagery. Each value links to its record.