Washington
Grade distribution
Overview
Washington has 39 tracked counties. 33 are graded A or B — favorable to moderate permitting conditions. The state's RPS 100% by 2045 target provides a supportive macro backdrop. No Washington counties currently have an active utility-scale solar moratorium.
All counties — sorted by risk score (best first)
| County | Grade | Score | Trajectory | Moratorium |
|---|---|---|---|---|
| Benton County | A | 28 | — | |
| Thurston County | A | 29 | ↑ | |
| Franklin County | A | 29 | ↑ | |
| Grant County | A | 29 | ↑ | |
| Snohomish County | A | 30 | — | |
| King County | A | 32 | — | |
| Whatcom County | A | 32 | ↑ | |
| Douglas County | A | 34 | — | |
| Spokane County | B | 36 | — | |
| Pierce County | B | 37 | ↓ | |
| Jefferson County | B | 38 | — | |
| Clark County | B | 38 | — | |
| Pacific County | B | 38 | ↑ | |
| San Juan County | B | 38 | — | |
| Pend Oreille County | B | 39 | ↑ | |
| Clallam County | B | 39 | — | |
| Mason County | B | 39 | — | |
| Ferry County | B | 40 | — | |
| Cowlitz County | B | 40 | — | |
| Skagit County | B | 40 | — | |
| Okanogan County | B | 40 | ↑ | |
| Klickitat County | B | 41 | — | |
| Chelan County | B | 41 | — | |
| Island County | B | 41 | — | |
| Walla Walla County | B | 41 | — | |
| Kitsap County | B | 42 | — | |
| Yakima County | B | 43 | — | |
| Grays Harbor County | B | 44 | — | |
| Lewis County | B | 44 | ↑ | |
| Skamania County | B | 45 | — | |
| Stevens County | B | 45 | ↑ | |
| Kittitas County | B | 46 | — | |
| Asotin County | B | 46 | — | |
| Lincoln County | C | 47 | ↑ | |
| Whitman County | C | 47 | — | |
| Adams County | C | 48 | ↑ | |
| Wahkiakum County | C | 56 | — | |
| Columbia County | C | 57 | ↓ | |
| Garfield County | D | 58 | ↑ |
See the full interactive map
County grades, scores, and ordinance data are also available on the interactive county map with filtering by grade, state, and risk factor.
Open the county map →About SitePath scoring
Every U.S. county is scored 0–100 on solar permitting risk (lower is friendlier to development). The grade is a weighted composite of compliance stringency, market saturation, regulatory trajectory, and data uncertainty. Every figure traces back to a primary government document. Read the full methodology →
SitePath Intelligence is a research platform. Data verified as of 2026-05-27. Scores update on a quarterly review cycle.