How Much Can Solar Save in Downers Grove?

Real numbers based on current ComEd rates and Illinois incentives.

$223

Current Bill/mo

$183

Est. Lease + Battery

26+ yrs

Years of Pure Profit

$81,717

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

$223

Annual Cost

$2,676

25-Year Cost (No Solar)

$146,817

Your Solar Investment

10 kW System

$27,500

$11,280

After All IL Incentives

DG Rebate ($300/kW)-$3,000

Illinois Shines RECs (lump sum, ~18 mo)-$13,220

With vs Without Solar in Downers Grove

Metric	Without Solar	With Solar
Monthly Cost	$223/mo	$165/mo (loan)
Monthly Cash Flow	-$0 (all to utility)	+$28/mo
5-Year Cost	$14,450	$9,900
25-Year Cost	$146,817	$65,100
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

$81,717

Without Solar

With Solar

Year 1Profit Starts Here

$2,676

$2,342

Year 5

$15,085

-$1,144

Year 10

$35,272

$12,088

Year 15

$62,286

$26,997

Year 20

$98,438

$44,321

Year 25

$146,817

$65,101

Year	Without Solar	With Solar	Cumulative Savings
Year 1Profit Starts	$2,676	$2,342	$334
Year 2	$5,513	-$8,502	$14,014
Year 3	$8,519	-$6,090	$14,609
Year 4	$11,706	-$3,638	$15,344
Year 5	$15,085	-$1,144	$16,229
Year 6	$18,666	$1,396	$17,270
Year 7	$22,462	$3,985	$18,477
Year 8	$26,486	$6,627	$19,859
Year 9	$30,751	$9,327	$21,424
Year 10	$35,272	$12,088	$23,184
Year 11	$40,064	$14,915	$25,149
Year 12	$45,144	$17,814	$27,329
Year 13	$50,529	$20,791	$29,738
Year 14	$56,236	$23,849	$32,387
Year 15	$62,286	$26,997	$35,290
Year 16	$68,700	$30,240	$38,459
Year 17	$75,498	$33,587	$41,911
Year 18	$82,704	$37,043	$45,660
Year 19	$90,342	$40,619	$49,723
Year 20	$98,438	$44,321	$54,117
Year 21	$107,021	$48,161	$58,859
Year 22	$116,118	$52,148	$63,970
Year 23	$125,761	$56,292	$69,469
Year 24	$135,982	$60,606	$75,377
Year 25	$146,817	$65,101	$81,717

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 Downers Grove

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

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