Solar in McHenry, IL
With ComEd's electricity at about 19.3¢ per kWh and 1,342 kWh of sun per kW, solar is worth it for a typical McHenry home today: about a 12.5-year payback.
- Payback, typical home
- 12.5 yrsIllinois: 13.5 yrs
- 25-year net
- $24,291after paying $16,500
- Sun
- 1,342kWh per kW per year
- Electricity
- 19.3¢7% above U.S. average
A typical McHenry home, by the numbers
| Utility | ComEd |
|---|---|
| Electricity use | 622 kWh a month |
| Best-value system | 5 kW, about 12 panels, 6,709 kWh a year (90% of use) |
| Cost | $18,000, or $16,500 after state incentives |
| First-year savings | $1,223 |
| Payback | 12.5 years |
| Exported power | 9¢/kWh (ComEd) |
Cash purchase, no federal credit, 3.5% yearly rate increases. Run it with your own numbers.
Homes in McHenry
- Owner-occupied homes
- 74%
- Single-family detached
- 68%
- Median home value
- $267k
- Median year built
- 1988
- Population
- 28,074
Census ACS 2020–2024.
Installers working in McHenry
Public installation records for Illinois don't name installers, so we can't rank local companies here. Browse installers in Illinois.
Always verify the license and get at least three quotes. Compare quotes side by side.
Questions about solar in McHenry
Is solar worth it in McHenry, IL?
For a typical home in McHenry, solar is worth it at 2026 prices: a 5 kW system costs about $16,500 after state incentives, saves about $1,223 in year one and pays back in about 12.5 years. Enter your address for an estimate based on your roof and bill.
How much solar power does a system produce in McHenry?
About 1,342 kWh per year for each kW of panels on a south-facing roof, based on PVWatts and local weather. That's 0% more than the Illinois average. East- or west-facing roofs produce roughly 10–20% less.
Who is the electric utility in McHenry?
Most homes in McHenry are served by ComEd, at about 19.3¢ per kWh on average.
How much do solar panels cost in McHenry?
A fair cash price is around $3.40 per watt before incentives, so about $18,000 for a 5 kW system. There's no federal tax credit for homeowners who buy in 2026.
Nearby
- Crystal Lake 12.5 yrs
- Woodstock 12.5 yrs
- Lake in the Hills 12.4 yrs
- Round Lake Beach 12.5 yrs
- Algonquin 12.4 yrs
- Huntley 12.5 yrs
- Carpentersville 12.5 yrs
- Mundelein 12.5 yrs
- All of Illinois
Data: PVWatts (National Laboratory of the Rockies), EIA-861 2025 adjusted to 2026, U.S. Census ACS, LBNL Tracking the Sun, state policy research as of October 2026.