Solar in Mount Prospect, IL
With ComEd's electricity at about 19.3¢ per kWh and 1,353 kWh of sun per kW, solar is worth it for a typical Mount Prospect home today: about a 12.4-year payback.
- Payback, typical home
- 12.4 yrsIllinois: 13.5 yrs
- 25-year net
- $24,701after paying $16,500
- Sun
- 1,353kWh per kW per year
- Electricity
- 19.3¢7% above U.S. average
A typical Mount Prospect home, by the numbers
| Utility | ComEd |
|---|---|
| Electricity use | 622 kWh a month |
| Best-value system | 5 kW, about 12 panels, 6,764 kWh a year (91% of use) |
| Cost | $18,000, or $16,500 after state incentives |
| First-year savings | $1,236 |
| Payback | 12.4 years |
| Exported power | 9¢/kWh (ComEd) |
Cash purchase, no federal credit, 3.5% yearly rate increases. Run it with your own numbers.
Homes in Mount Prospect
- Owner-occupied homes
- 69%
- Single-family detached
- 57%
- Median home value
- $397k
- Median year built
- 1969
- Population
- 55,472
- Roofs suitable for solar†
- 85%
Census ACS 2020–2024. †Share of 11,342 buildings Google Project Sunroof rated technically suitable (2019 snapshot).
Older housing stock. Many homes here were built before 1975. Have the roof and electrical panel checked before signing; a roof or panel upgrade can add thousands. Roof first?
Installers working in Mount Prospect
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 Mount Prospect
Is solar worth it in Mount Prospect, IL?
For a typical home in Mount Prospect, solar is worth it at 2026 prices: a 5 kW system costs about $16,500 after state incentives, saves about $1,236 in year one and pays back in about 12.4 years. Enter your address for an estimate based on your roof and bill.
How much solar power does a system produce in Mount Prospect?
About 1,353 kWh per year for each kW of panels on a south-facing roof, based on PVWatts and local weather. That's 1% more than the Illinois average. East- or west-facing roofs produce roughly 10–20% less.
Who is the electric utility in Mount Prospect?
Most homes in Mount Prospect are served by ComEd, at about 19.3¢ per kWh on average.
How much do solar panels cost in Mount Prospect?
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
- Des Plaines 12.5 yrs
- Arlington Heights 12.4 yrs
- Wheeling 12.6 yrs
- Elk Grove Village 12.3 yrs
- Glenview 12.7 yrs
- Park Ridge 12.6 yrs
- Palatine 12.5 yrs
- Northbrook 12.6 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.