Solar Energy in Cook County, IL (2026)

3 county-level rules, plus city-specific rules for 9 cities in Cook County, Illinois.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Cook County. If you live within an incorporated city, that city's own rules apply — see the city list below.

Panel Permits

Cook County requires permits for rooftop solar panel installation on all residential rooftops. Photovoltaic panels must be roof-mounted on the principal structure. Electrical work must comply with the 2014 Cook County Electrical Code.

Cook County Solar Panel Permits

Some Restrictions

Full ordinance details →Official source ↗

HOA Restrictions

Illinois law protects homeowners' right to install solar panels. HOAs cannot unreasonably restrict solar installations. Cook County's zoning ordinance allows roof-mounted solar on principal structures. Illinois solar access protections apply statewide.

Cook County Solar HOA Restrictions

Few Restrictions

Full ordinance details →Official source ↗

Expedited Solar Permitting

The Illinois Solar Permit Standardization Act (110 ILCS 75) directs counties and municipalities to adopt streamlined permitting for residential rooftop solar under 25 kW. Cook County Building Code Ch. 32 and most suburban building departments use SolarAPP+ or similar tools to issue permits within 14 calendar days.