Solar panels in Will County, IL
Compare solar costs, payback and local permit rules across 9 Will County towns served by ComEd, then get free, no-obligation quotes.
Free, no-obligation quotes. Savings vary by home and utility. $0-down offers are leases or PPAs and are subject to approval.
Quick answer
Is solar worth it in Will County, IL?
For many homes, yes. With a $150 monthly bill, we estimate a system costs about $10,700 after the ComEd rebate and Illinois Shines in Will County, paying for itself in about 8.2 years on an unshaded, south-facing roof.
How does solar compare across Will County towns?
| Town | Median home value | Owner-occupied |
|---|---|---|
| Bolingbrook | $314,700 | 79% |
| Frankfort | $481,200 | 95% |
| Homer Glen | $418,800 | 95% |
| Joliet | $265,800 | 74% |
| Mokena | $401,400 | 91% |
| New Lenox | $399,900 | 92% |
| Plainfield | $431,400 | 88% |
| Romeoville | $257,100 | 81% |
| Shorewood | $337,800 | 97% |
Panels across Will County produce about 1,210 kWh per kW a year, so the solar estimate is the same for every town: about $10,700 after incentives and payback in about 8.2 years. What differs is the housing, below.
Estimates for a cash purchase on an unshaded, south-facing roof. Home values and ownership rates are U.S. Census Bureau American Community Survey 5-year estimates; n/a means no Census figure was available. How we estimate
What do Will County towns require for solar?
Permits and zoning rules are set town by town. Highlights from each town's own rules:
- Bolingbrook: Bolingbrook handles building permit applications, plan uploads, fee payments and inspection scheduling through the village's online Permit Portal.
- Frankfort: Frankfort's Building Department publishes permit submittal requirements for rooftop solar panels and enforces the 2021 International Residential Code and 2020 National Electrical Code.
- Homer Glen: Homer Glen has an Electrical-Solar permit application among its permit forms, and in 2025 the village adopted zoning standards for solar energy systems.
- Joliet: Joliet's Building & Inspection Services division takes residential solar applications on a combined residential permit form with a solar option that asks for the system's size in kW and number of panels.
- Mokena: Mokena has a dedicated residential solar panel permit, with applications accepted through BS&A Online, in person, by mail or by email, and fees based on project value.
- New Lenox: Rooftop solar permits in New Lenox can be filed online through the village's BS&A Online portal, and contractors need a current village registration.
- Plainfield: Building permits in Plainfield go through the Village's Building & Code Enforcement Department and its online Permitting & Licensing Portal; the department's number is (815) 439-2937.
- Romeoville: Romeoville permits roof-mounted solar panels as an accessory use in any zoning district but does not allow freestanding solar panels in residential districts.
- Shorewood: Shorewood's Building Department takes applications at permits@shorewoodil.gov, with first review in 7 to 10 business days, and contractors must register with the village.
Each town page has the full details and sources.
How do I keep solar from raising my Will County property taxes?
File form PTAX-330 with the Will County assessment office. Under Illinois law, a home with solar can be assessed as if it had a conventional energy system, so panels don't raise your assessment. The Will County Supervisor of Assessments posts the PTAX-330 form on its website.
How does solar work with ComEd in Will County?
ComEd pays about $300 per kW in rebates for new home solar systems with a smart inverter, and since 2025 credits exported power at the supply rate. Power you use as your panels produce it still saves the full retail rate.
See the full ComEd solar guide.
Choosing a company? See how to choose a solar installer in Illinois and what a solar quote should include.
Will County solar FAQ
Which electric utility serves Will County?
The towns we cover in Will County are served by ComEd, which pays about $300 per kW in rebates for new solar systems and credits exported power at the supply rate.
How long does solar take to pay back in Will County?
For an unshaded home with a $150 monthly bill, we estimate payback of about 8.2 years in Will County, after the utility rebate and Illinois Shines.
Will solar raise my property taxes in Will County?
Not if you file form PTAX-330. Illinois lets the county assess a home with solar as if it had a conventional energy system. See how Illinois taxes homes with solar.
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