Maryland solar permitting
Grade distribution
Overview
Every Maryland county is scored on the SitePath solar permitting index. A sizeable minority are graded A or B, meaning they present low to moderate permitting risk for utility-scale solar projects. About half sit in the C range — moderate risk with meaningful process uncertainty. A sizeable minority are rated D or F — high to very high risk, often due to active moratoria, restrictive setback ordinances, or strong local opposition.
The most favorable jurisdictions in Maryland include Anne Arundel County (grade B), Washington County (grade B), St. Mary's County (grade B). The most challenging include Carroll County (grade D), Frederick County (grade D), Harford County (grade D).
At the state level, Maryland's RPS 50% by 2030 commitment creates a supportive macro environment for solar development, though county-level boards retain significant discretion over individual project approvals. No Maryland counties currently have an active utility-scale solar moratorium.
All counties — sorted by risk score (best first)
| County | Grade | Score | Trajectory | Moratorium |
|---|---|---|---|---|
| Anne Arundel County | B | 33 | — | |
| Washington County | B | 36 | — | |
| St. Mary's County | B | 38 | — | |
| Kent County | B | 40 | — | |
| Baltimore City | B | 40 | — | |
| Worcester County | B | 41 | — | |
| Allegany County | C | 43 | — | |
| Garrett County | C | 44 | — | |
| Queen Anne's County | C | 45 | — | |
| Talbot County | C | 45 | — | |
| Baltimore County | C | 46 | — | |
| Dorchester County | C | 47 | — | |
| Prince George's County | C | 47 | — | |
| Cecil County | C | 49 | — | |
| Somerset County | C | 49 | — | |
| Wicomico County | C | 50 | — | |
| Caroline County | C | 50 | — | |
| Charles County | D | 52 | — | |
| Howard County | D | 53 | — | |
| Montgomery County | D | 55 | — | |
| Calvert County | D | 57 | — | |
| Carroll County | D | 63 | — | |
| Frederick County | D | 65 | — | |
| Harford County | D | 65 | — |
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 2026-05-02. Scores update on a quarterly review cycle.