Winnebago County, WI Solar Energy: Panel Permits (2026)
Key Facts
- No overhang
- Panels can't extend past roof/wall
- Height cap
- Matches district's building height limit
- Certification
- UL, NREL, or SRCC required
- Facade projection cap
- Max 4 feet, commercial only
Summary
Winnebago County requires building-mounted solar panels to sit flush with the roof or wall, meet the district's height limit, and carry UL, NREL, or SRCC certification.
(a) Maximum surface area. No portion of a panel used to collect solar energy may extend beyond the roof surface or the wall surface to which it is attached. (b) Maximum height. A building-mounted solar energy system shall comply with the maximum height requirements of the zoning district in which the building is located.
Full Breakdown
Ch. 23 § 23.8-487 keeps a roof- or wall-mounted residential solar array from extending past the surface it's attached to, and caps its height at whatever limit already applies to that building in its zoning district. Flat- or pitched-roof panels may be fixed or tilted; a commercial building's facade-mounted array can't project more than 4 feet from the wall. Every panel needs certification from Underwriters Laboratories, the National Renewable Energy Laboratory, the Solar Rating and Certification Corporation, or another body the zoning administrator accepts. If over half a system's panels sit idle for 12 straight months, the administrator can start the termination process. This section applies only in towns that adopted Ch. 23 by resolution.
Violations & Fines
Installing a solar array that ignores the height or overhang limits, or using uncertified panels, is a Ch. 23 violation under § 23.14-3, subject to a stop-work order and forfeiture under § 23.14-9.
Frequently Asked Questions
Can Winnebago County make me remove an unused solar array?
Do solar panels need special certification in Winnebago County?
Sources & Official References
Other rules in Winnebago County
Compare Winnebago County to another location·View the Wisconsin solar energy overview
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