Solar Energy in McHenry County, IL (2026)
1 rule for unincorporated McHenry County, Illinois.
Verified from official government sources
Note: These county rules apply to unincorporated areas of McHenry County. If you live within an incorporated city, that city's own rules apply: see the city list below.
Panel Permits
Rooftop and ground-mounted solar panels in unincorporated McHenry County are permitted under the county's amended 2021 International Residential Code, not through a separate solar-only process. Photovoltaic systems must use UL 1741-listed inverters, meet roof-load engineering for the added panel weight, and keep ground-mounted arrays at least 7 feet from any other structure.
McHenry County Solar Panel Permit Standards
Some RestrictionsMcHenry County Code § 15.08.010 (IRC § R324, Solar Energy Systems)
R324.3 Photovoltaic systems. Photovoltaic systems shall be designed and installed in accordance with the McHenry County Unified Development Ordinance, Sections R324.3.1 through R324.7.2.5 and NFPA 70. Inverters shall be listed and labeled in accordance with UL 1741. Systems connected to the utility grid shall use inverters listed for utility interaction. ... R324.4.1 Roof load. ... Roof structu...
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