Williamson County
Williamson County, Tennessee: solar permitting grade D (score 62/100, High Risk). Score has been stable over the last 12 months. Primary-source ordinance and board-vote data on SitePath.
Public summary
| Grade | D · High Risk · Score 62/100 |
| Population | 247,726 |
| Solar ordinance | Active solar ordinance on the books |
| Active moratorium | None on record |
| Regulatory trajectory | Worsening (ordinance direction tightening) |
| 12-month score movement | Stable |
| Last verified | 2026-09-25 |
Developer outlook
Williamson County is a high-risk jurisdiction for utility-scale solar — documented ordinance hurdles are significant and approval history is mixed or unfavorable. Tennessee's state policy environment adds headwinds — the absence of a strong RPS framework means county-level resistance faces less counterbalancing pressure.
Local intel
On file: named opposition groups
Cities, towns & townships
Local governments in Williamson County. An incorporated city, town or village can adopt its own zoning, separate from the county’s.
- Brentwood city
- Eagleville citypartly in this county
- Fairview city
- Franklin city
- Spring Hill citypartly in this county
- Nolensville town
- Smyrna townpartly in this county
- Thompson's Station town
Source: U.S. Census Bureau, incorporated places and county subdivisions with an active government.
Nearby counties
- Davidson County · ≈20 miC47—
- Maury County · ≈22 miC47—
- Rutherford County · ≈27 miD61—
- Cheatham County · ≈27 miC45—
- Marshall County · ≈30 miB35—
- Dickson County · ≈31 miC48—
Compare these counties side-by-side →
Williamson County ranks #93 of 95 ranked Tennessee counties (1 = lowest permitting risk). Lowest-risk in Tennessee: Hardin County (A · 27), Lawrence County (A · 29), Crockett County (B · 30). See all Tennessee county grades →
Want the full record?
Setback distances, board vote histories, source documents, and ordinance amendments are available in the full county profile. The map is free; a walkthrough shows you the underlying record.
About this score
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 →
Related reading
SitePath Intelligence is a research platform. Data verified as of 2026-09-25. Scores update on a quarterly review cycle.