Maine
Grade distribution
Overview
Maine has 16 tracked counties. 16 are graded A or B — favorable to moderate permitting conditions. The state's RPS 80% by 2030 target provides a supportive macro backdrop. No Maine counties currently have an active utility-scale solar moratorium.
All counties — sorted by risk score (best first)
| County | Grade | Score | Trajectory | Moratorium |
|---|---|---|---|---|
| Lincoln County | A | 30 | ↑ | |
| Waldo County | A | 30 | ↑ | |
| Sagadahoc County | A | 30 | ↓ | |
| Knox County | A | 30 | ↑ | |
| Kennebec County | A | 31 | ↑ | |
| Androscoggin County | A | 32 | ↑ | |
| York County | A | 32 | ↑ | |
| Cumberland County | A | 34 | — | |
| Somerset County | B | 36 | — | |
| Franklin County | B | 37 | — | |
| Piscataquis County | B | 37 | — | |
| Oxford County | B | 37 | — | |
| Aroostook County | B | 37 | ↑ | |
| Washington County | B | 37 | — | |
| Hancock County | B | 38 | — | |
| Penobscot County | B | 38 | — |
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.