Grant County, Washington solar and battery storage ordinance
Solar: 20 ft (solar array) maximum height. Battery storage: 25 ft from property lines, 20 ft (storage container) maximum height. Every figure is quoted from the county's ordinance, read September 30, 2026.
Updated September 2026
Solar rules
1 figure read from the county's ordinance, each with the sentence it comes from.
| Rule and what the ordinance says | Requirement |
|---|---|
Maximum heightsolar arrayMaximum structure height for the solar array shall be 20-feet as measured from the highest existing native grade below each panel. | 20 ft |
Source: Grant County ordinance (PDF), read September 30, 2026. Check the cited section with the county before relying on a figure.
Battery storage rules
2 figures read from the county's ordinance, each with the sentence it comes from.
| Rule and what the ordinance says | Requirement |
|---|---|
Property line setbackSetbacks for Energy Storage System facilities shall be 25-feet from any property line; | 25 ft |
Maximum heightstorage containerThe maximum structure height for an Energy Storage System storage container shall be 20-feet as measured from the highest adjacent grade; | 20 ft |
Source: Grant County ordinance (PDF), read September 30, 2026. Check the cited section with the county before relying on a figure.
Washington state law
State law can cap or override county rules. All Washington rules and counties.
State siting: Washington Energy Facility Site Evaluation Council (EFSEC)
Wind, solar and other alternative energy projects of any size, and storage facilities, may opt in to state certification by EFSEC instead of local permits; projects that do not opt in are permitted by the county.
RCW 80.50.060(1)(b) (as amended through 2026 c 244). Source
Limits on local rules
On the state route, the council can set aside local laws.
RCW 80.50.090, 80.50.100 (DOE and Berkeley Lab inventory, June 2024). Source
Solar standards in state law
Applies to projects EFSEC certifies, which must meet the state's environmental noise limits (set by land class: an industrial or farm source may reach 60 dBA at homes by day and 50 dBA at night); the same Ecology limits apply statewide to any noise source.
| Noise | 60 dBA day, 50 dBA night (10 pm to 7 am) at homes from an industrial or farm-land source |
WAC 463-62-030 (amended WSR 25-12-020, effective June 22, 2025), adopting WAC 173-60-040. Source
Every Washington figure in one spreadsheet
29 figures from 5 counties, each with its quote, source, date read and any condition. Plus the moratorium or ban on file and Washington state law.
How these figures were read
We found Grant 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
How tall can a solar farm be in Grant County, WA?
The ordinance sets a maximum height of 20 ft (solar array). Check the cited section with the county before relying on a figure.
What are the battery storage setbacks in Grant County, WA?
The county's ordinance sets battery storage back 25 ft from property lines. Check the cited section with the county before relying on a figure.