Knoxville, TN Solar Energy: Panel Permits (2026)
Key Facts
- Pitched-roof panel height
- Max 18 inches above roof
- Freestanding system height
- Max 10 feet
- Freestanding front yard
- Prohibited
- Glare
- Must not hit neighboring property
Summary
Knoxville lets homeowners mount solar panels on roofs or walls or install freestanding arrays, capping roof-mounted panels on pitched roofs at 18 inches and freestanding systems at 10 feet, and barring freestanding panels from the front yard.
A solar panel may be building-mounted or freestanding. Solar panels must be placed so that concentrated solar radiation or glare is not directed onto nearby properties or roadways. ... On pitched roof buildings, the maximum height a roof-mounted solar panel may rise is 18 inches. ... A freestanding system is prohibited in the front yard. ... The maximum height of a freestanding system is ten feet in residential districts.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 80).
Full Breakdown
Knoxville treats solar as an accessory use with dimensional limits, not a discretionary permit. Panels may be building-mounted or freestanding, but must avoid directing glare onto neighboring properties or roads. On a pitched roof, panels can rise no more than 18 inches above the surface; on a flat roof the cap is six feet, or 15 feet on buildings over 40 feet tall, and roof-mounted systems don't count toward building height. Wall-mounted panels may project up to four feet from the façade. A freestanding ground system is capped at 10 feet in residential districts and is barred from the front yard. A building permit may still be required under the Building Code.
Violations & Fines
Knoxville's Code of Ordinances sets a general penalty of up to a $50 fine, up to $500 in administrative costs, and/or 30 days' jail per day of violation, absent a more specific penalty (§ 1-9).
Frequently Asked Questions
Do roof-mounted solar panels count toward Knoxville's building height limit?
Can I put ground-mounted solar panels in my front yard?
Sources & Official References
Other rules in Knoxville
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