Solar System Sizing Tool — Naperville, IL
Use our interactive tool to determine the right solar system size for your home in Naperville. Adjust your monthly electricity bill and home size to see a personalized recommendation based on local solar conditions.
Size Your Solar System
$
Local rate: 17.5¢/kWh
ft
Peak sun hours: 4.1h/day
7.1
System Size (kW)
18
Panels Needed
324
Roof Space (sq ft)
$20,242
Est. Cost
10,629
Annual kWh
100%
Energy Offset
Energy Offset100% of your usage covered by solar
0%50%100%
How We Calculate Your System Size
Your recommended solar system size is based on several factors specific to Naperville, IL:
- Electricity usage: Your monthly bill is converted to annual kWh consumption using the local rate of 17.5¢/kWh.
- Solar irradiance: Naperville receives an average of 4.1 peak sun hours per day, which determines how much energy each panel produces.
- Panel specifications: We use 400W panels, each requiring approximately 18 sq ft of roof space, which is standard for modern residential installations.
- Roof space: The total roof area needed depends on the number of panels. The average home in Naperville is 2,200 sq ft.
Solar at a Glance: Naperville, IL
17.5¢
Avg Rate / kWh
4.1h
Peak Sun Hours / Day
7.1 kW
Avg Recommended Size
18
Avg Panels Needed
$20,242
Est. Cost (before incentives)
ComEd (Commonwealth Edison)
Utility Provider
Other Cities in Illinois
Related Resources
Ready to Go Solar in Naperville, IL?
Get a Custom Solar Design for Naperville
Our experts will assess your roof, energy needs, and local conditions to design the perfect system for your Naperville home.
Get Your Free Quote