Union County, NC Solar Energy: Panel Permits (2026)
Key Facts
- Building-mounted height limit
- 3 ft above max height, or 5 ft above roofline
- Street-facing roof
- Only building-integrated/flush-mounted panels
- Setback encroachment
- Principal-structure panels may encroach, § 100.050-B
- Ground-mounted rule
- No placement in required street setback/yard
- Permit path
- Building/electrical permit, no zoning use permit
Summary
Solar panels are an accessory use in unincorporated Union County, reviewed through the standard building and electrical permit process rather than a separate zoning permit, but Section 35.110 of the Unified Development Ordinance still sets placement rules: roof panels can encroach into setbacks under limited conditions and cannot rise more than 3 feet above the height limit, while ground panels must stay out of the street setback.
General Accessory solar energy systems must comply with all applicable building and electrical code requirements. Building-Mounted Solar Energy Systems
1. Building-mounted solar energy systems may be mounted on principal and accessory structures. 2. All applicable setback regulations apply to building-mounted solar energy systems. Systems mounted on principal structures may encroach into interior side and rear setbacks in accordance with §100.050-B. 3. ... Only building-integrated and/or flush-mounted solar energy system may be installed on street-facing building elevations. 4. Solar energy systems may not extend more than 3 feet above the applicable maximum building height limit for the subject building type or more than 5 feet above the highest point of the roof line, whichever is less. Ground-Mounted Solar Energy Systems
1. In residential zoning districts, ground-mounted solar energy systems may not be located in a required street setback or street yard area.
Full Breakdown
110 regulates solar energy systems as an accessory use, meaning a homeowner in unincorporated Union County adds panels through the standard building and electrical permit process rather than a distinct zoning use permit, but the installation still has to meet the section's placement and design standards to pass review. 050-B. Only building-integrated or flush-mounted panels are allowed on a street-facing roof elevation, which rules out tilted rack-mounted arrays visible from the road. Height is capped at whichever is less: 3 feet above the zoning district's maximum building height limit for the structure, or 5 feet above the highest point of the roofline.
Ground-mounted systems get a separate set of rules: in residential zoning districts they cannot sit in a required street setback or street yard, though they may be placed within the required interior side and rear setbacks, and they are subject to whatever height and lot-coverage limits already apply to accessory structures on that lot. None of these standards require a hearing before the land use board; they are administrative permit criteria the county checks against the site plan.
Violations & Fines
A solar installation that exceeds the height cap, sits in a street setback, or places a non-flush panel on a street-facing roof violates Section 35.110 and is subject to Article 95 enforcement: a warning citation with a 10-day correction window, then $50, $200 and $500 fines for repeat citations, and a misdemeanor of up to $500 or 30 days under NCGS 14-4 for continuing noncompliance.
Frequently Asked Questions
Do I need a special zoning permit for rooftop solar panels in unincorporated Union County?
How tall can a rooftop solar array be in Union County?
Can I put ground-mounted solar panels near my property line?
Sources & Official References
Other rules in Union County
Compare Union County to another location·View the North Carolina solar energy overview
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