How Much Can Solar Save in Naperville?

Real numbers based on current ComEd rates and Illinois incentives.

$240

Current Bill/mo

$191

Est. Lease + Battery

23+ yrs

Years of Pure Profit

$67,882

25-Year Savings

What You're Paying Now

Without solar, here's what ComEd electricity will cost you over time at 6% annual rate increases.

Monthly Bill

$240

Annual Cost

$2,880

25-Year Cost (No Solar)

$158,010

Your Solar Investment

14.5 kW System

$39,875

$21,690

After All IL Incentives

DG Rebate ($300/kW)-$4,350

Illinois Shines RECs (lump sum, ~18 mo)-$13,835

With vs Without Solar in Naperville

Metric	Without Solar	With Solar
Monthly Cost	$240/mo	$240/mo (loan)
Monthly Cash Flow	-$0 (all to utility)	$-34/mo
5-Year Cost	$15,552	$14,400
25-Year Cost	$158,010	$90,128
Rate Control	None — utility sets rates	Fixed at $0.10/kWh (avg.) for 15 years
Home Value Impact	None	+$15,000–$25,000 (tax-exempt)

Your Solar Savings Over Time

Estimated 25-Year Total Savings

$67,882

Without Solar

With Solar

Year 1

$2,880

$3,285

Year 2Profit Starts Here

$5,933

-$7,228

Year 5

$16,235

$2,994

Year 10

$37,961

$21,105

Year 15

$67,035

$41,070

Year 20

$105,943

$63,698

Year 25

$158,010

$90,128

Year	Without Solar	With Solar	Cumulative Savings
Year 1	$2,880	$3,285	-$405
Year 2Profit Starts	$5,933	-$7,228	$13,161
Year 3	$9,169	-$3,865	$13,034
Year 4	$12,599	-$459	$13,058
Year 5	$16,235	$2,994	$13,240
Year 6	$20,089	$6,498	$13,590
Year 7	$24,174	$10,057	$14,117
Year 8	$28,505	$13,675	$14,830
Year 9	$33,095	$17,356	$15,739
Year 10	$37,961	$21,105	$16,856
Year 11	$43,118	$24,928	$18,191
Year 12	$48,585	$28,829	$19,756
Year 13	$54,381	$32,816	$21,565
Year 14	$60,523	$36,894	$23,630
Year 15	$67,035	$41,070	$25,965
Year 16	$73,937	$45,352	$28,585
Year 17	$81,253	$49,746	$31,507
Year 18	$89,008	$54,263	$34,745
Year 19	$97,229	$58,910	$38,318
Year 20	$105,943	$63,698	$42,244
Year 21	$115,179	$68,636	$46,543
Year 22	$124,970	$73,736	$51,233
Year 23	$135,348	$79,010	$56,338
Year 24	$146,349	$84,469	$61,880
Year 25	$158,010	$90,128	$67,882

Calculate YOUR Savings

Enter your actual ComEd bill to see a personalized 25-year savings projection.

$Enter Your Information

Average Monthly Electric Bill

Current Utility Rate ($/kWh)

Default: $0.16/kWh (ComEd & Ameren average)

Utility Rate Escalator: 4.5% per year

Conservative (2%)Historical Average (6%)Aggressive (10%)

How We Calculate Your Savings

This calculator uses your custom utility rate (default $0.16/kWh for Illinois) with a 4.5% annual escalator compared to our fixed lease rate of $0.10/kWh (avg.) for 15 years. A low-escalator option is also available for a lower starting payment. After the 15-year lease, you can keep the system for a low fair-market buyout — then your electricity cost drops to near-zero for the remaining life of the panels (25+ years). Your actual savings may vary based on your specific usage patterns and system size.

More Solar Resources for Naperville

Solar IncentivesRECs, rebates & tax exemptions Electricity RatesRate trends & bill analysis Solar FAQCommon questions answered

Start Saving in Naperville

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Or call (618) 217-2001|Info@ltdsolarconsulting.com