Is Solar Worth It in Naperville, Illinois?
Naperville is unusual: most of the city runs on its own municipal electric utility, not ComEd — and the solar math is different for each. Pick your provider below for a straight estimate of system size, cost, incentives, and payback. No address needed, nothing is stored. If you missed it, here's why electric bills are so high in Naperville in the first place.
Last updated: October 8, 2026
The calculator
One honest limitation: we can't see your roof from here — there's no satellite imagery in this tool. You tell us which way your roof faces, and we do the math from there. Every number below is an estimate, not a quote.
Incentives in this estimate
How the math works
- Your usage: for City of Naperville customers, we back out the $21.52/mo fixed charge and divide the rest by the 11.968¢/kWh energy rate. For ComEd customers, monthly bill × 12 ÷ ~18¢/kWh (bundled residential rate).
- Production: ~1,300 kWh per kW per year for a south-facing system in the Chicago area (typical modeled value), adjusted for the roof direction and shade you picked.
- System size: sized to cover your annual usage, capped at 20 kW for a typical home.
- Savings — City of Naperville: the city's net metering credits solar exports 1:1 against the energy portion of your bill (~12¢/kWh), with monthly banking — so nearly every kWh your system makes is worth the energy rate.
- Savings — ComEd: about 60% of output is assumed used at home (offsetting the full ~18¢); the other 40% is exported and credited at roughly the supply-only rate (~10.1¢/kWh). No battery assumed.
- Costs: ~$3.00 per watt installed, the Illinois-typical range in 2026.
Full source list and every assumption are documented in our research notes. Wondering why your Naperville electric bill is so high in the first place? That's the other half of the story.
Solar in Naperville FAQ
Does Naperville's city electric utility offer net metering?
Yes. Naperville's municipal utility credits solar customers 1:1 for each kWh sent to the grid, applied against the energy portion of the bill. Excess credits bank month to month, expire March 31 each year, and any leftover is paid out at the avoided-cost rate (about 4.9¢/kWh) in April.
Does Naperville offer a solar rebate?
Yes. The City of Naperville offers residential solar incentives up to $1,750 — $250 per kW AC of inverter capacity, capped at 7 kW AC — for Naperville Electric Utility customers, according to the city's published solar guidelines.
Does the 30% federal solar tax credit still exist in 2026?
No. The residential solar credit (Section 25D) ended for systems placed in service after December 31, 2025, under the One Big Beautiful Bill Act. If a 2026 quote still subtracts 30%, that math is wrong for a homeowner-owned system. Leased systems can still carry federal value through the commercial credit, claimed by the company that owns the equipment.
I'm on ComEd near Naperville — do the same solar rules apply?
No. Outlying addresses served by ComEd fall under ComEd programs instead: the $300-per-kW distributed generation rebate and Smart Solar Billing, where exports earn supply-only credits — not the city's $250/kW rebate and 1:1 net metering. Pick the ComEd option in the calculator above.
How much does solar cost in Illinois in 2026?
Recent Illinois figures cluster around $2.80–$3.15 per watt installed before incentives — roughly $20,000–$25,000 gross for a typical 7–8 kW home system. Quotes vary widely by installer, roof complexity, and equipment tier, which is why multiple quotes matter.
Can renters get solar in Naperville?
Rooftop panels usually aren't an option for renters. Illinois community solar lets ComEd customers subscribe to a local solar farm for bill credits with no installation; Naperville municipal-utility customers should ask the city which community solar options reach their accounts.