Union County, Ohio solar ordinance
Solar: 100 ft (non-participating parcel boundaries) from property lines, 300 ft (edge of road pavement) from roads. Every figure is quoted from the county's ordinance, read October 7, 2026.
Updated October 2026
Solar rules
3 figures read from the county's ordinance, each with the sentence it comes from.
| Rule and what the ordinance says | Requirement |
|---|---|
Property line setbacknon-participating parcel boundariesThe final design shall incorporate a minimum setback from the project's solar modules fencing of (i) at least 100 feet from non - participating parcel boundaries | 100 ft |
Setback from homesnon-participating residences existing as of the application filing date(ii) at least 300 feet from non - participating residences existing as of the application filing date | 300 ft |
Road setbackedge of road pavement(iii) at least 300 feet from the edge of road pavement. | 300 ft |
Source: Union County ordinance (PDF), read October 7, 2026. Check the cited section with the county before relying on a figure.
Ohio state law
State law can cap or override county rules. All Ohio rules and counties.
State siting: Ohio Power Siting Board
Solar of 50 MW or more is sited by the Ohio Power Siting Board.
Ohio Rev. Code 4906.01, 4906.10 (DOE and Berkeley Lab inventory, June 2024). Source
Solar standards in state law
Binds solar projects of 50 MW or more that the Ohio Power Siting Board certifies, for applications filed after May 30, 2024; smaller projects stay with county and township zoning.
| Homes (non-participating) | 300 ft |
| Property line (non-participating) | 50 ft |
| Public roads | 150 ft from edge of pavement |
| Noise | 5 dBA over the greater of 40 dBA or ambient (L50), within 1 mile |
| Fencing | Small-wildlife permeable, rural-looking |
Ohio Adm. Code 4906-4-09(E), (G) (effective May 30, 2024). Source
Every Ohio figure in one spreadsheet
13 figures from 4 counties, each with its quote, source, date read and any condition. 1 of those places is not on this site. Plus the 32 moratoria and bans on file and Ohio state law.
How these figures were read
We found Union County's own ordinance and had two AI models read it separately. A figure is shown only when both read the same number and the sentence it comes from was found in the document. Moratoria and bans are checked against the adopting document. Ordinances change and many figures apply only in some cases, so check the cited section with the county before relying on one.
Common questions
What are the solar setbacks in Union County, OH?
The county's ordinance sets solar facilities back 100 ft (non-participating parcel boundaries) from property lines, 300 ft (non-participating residences existing as of the application filing date) from homes and 300 ft (edge of road pavement) from roads. Check the cited section with the county before relying on a figure.