Cook County, IL Solar Energy: Panel Permits (2026)
Key Facts
- Mounting
- Engineered structure required, ground or roof
- Prohibited surfaces
- No facade, chimney or fence mounting
- Flat-roof height cap
- 9 ft, or 5 ft above parapet
- Sloped-roof limit
- Cannot extend above roof ridge
- Coverage
- Unincorporated Cook County only
Summary
In unincorporated Cook County, rooftop and ground-mounted solar PV systems must use an engineered mounting structure, avoid glare on neighbors, and stay within district height and setback limits under the Zoning Ordinance.
All solar PV systems shall be installed using an engineered mounting structure whether ground or roof mounted. No solar PV system shall be installed to a building façade, mechanical appurtenances, smokestacks or chimneys, or fences with the exception of BIPV systems where components are integrated within architectural materials that provide roof covering, screening or enclosure as part of the building envelope.
Full Breakdown
Appendix A, Section 8.7.12 of the Cook County Zoning Ordinance sets the standards a solar photovoltaic installation must meet in unincorporated Cook County. Every system, ground- or roof-mounted, needs an engineered mounting structure; panels cannot be attached to building facades, chimneys, smokestacks or fences (BIPV components integrated into the building envelope are the exception). Collectors must use non-reflective material and be sited to avoid glare on adjacent properties or roads, and the system cannot carry advertising or signage. Residential systems may not extend beyond the structure's perimeter, flat-roof units are capped at 9 feet (or 5 feet above the parapet), and sloped-roof panels cannot rise above the roof ridge. The Department of Building and Zoning administers these standards; the ordinance applies only outside municipal corporate limits.
Violations & Fines
Installations that create glare or other adverse impacts can be ordered to add screening or be removed entirely; noncompliant mounting, height or setback violations are zoning code enforcement matters handled by the Department of Building and Zoning.
Frequently Asked Questions
Does this rule apply inside Chicago or other Cook County towns?
Can solar panels be mounted on a chimney or fence?
Sources & Official References
Other rules in Cook County
Compare Cook County to another location·View the Illinois solar energy overview
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