Expedited Solar Permitting: Des Plaines vs Evanston
How do expedited solar permitting rules compare between Des Plaines, IL and Evanston, IL?
Des Plaines and Evanston have similar restriction levels.
Des Plaines, IL
Cook County
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.
View full Des Plaines rules →Evanston, IL
Cook County
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.
View full Evanston rules →Key Facts Comparison
| Fact | Des Plaines | Evanston |
|---|---|---|
| Statute | 110 ILCS 75 enacted 2023 | 110 ILCS 75 enacted 2023 |
| System cap | 25 kW residential rooftop | 25 kW residential rooftop |
| Review deadline | 14 calendar days | 14 calendar days |
| Tool | SolarAPP+ accepted countywide | SolarAPP+ accepted countywide |
| Fee limit | Actual administrative cost only | Actual administrative cost only |
Highlighted rows indicate differences between cities.
Des Plaines FAQ
How fast should my Cook County solar permit be approved?
For a complete residential rooftop application up to 25 kW, the building department must approve or deny within 14 calendar days under 110 ILCS 75. Many Cook suburbs using SolarAPP+ deliver approvals within hours of submission.
Does the law cap my permit fee?
Yes. Fees are limited to the actual administrative and inspection cost incurred by the local government. Excessive flat fees that effectively tax solar installations are prohibited; applicants can challenge fees they believe exceed the statutory cost cap.
What about commercial or ground-mount solar?
The expedited process applies to residential rooftop systems up to 25 kW. Commercial rooftop, ground-mount, community solar, and larger residential systems follow standard Cook County or municipal permit timelines, often 30-90 days plus zoning review when applicable.
Evanston FAQ
How fast should my Cook County solar permit be approved?
For a complete residential rooftop application up to 25 kW, the building department must approve or deny within 14 calendar days under 110 ILCS 75. Many Cook suburbs using SolarAPP+ deliver approvals within hours of submission.
Does the law cap my permit fee?
Yes. Fees are limited to the actual administrative and inspection cost incurred by the local government. Excessive flat fees that effectively tax solar installations are prohibited; applicants can challenge fees they believe exceed the statutory cost cap.
What about commercial or ground-mount solar?
The expedited process applies to residential rooftop systems up to 25 kW. Commercial rooftop, ground-mount, community solar, and larger residential systems follow standard Cook County or municipal permit timelines, often 30-90 days plus zoning review when applicable.
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