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
7.6 yrs
Payback Period
$64,907
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
$42,050
$22,434
After All IL Incentives
DG Rebate ($300/kW)-$4,350
Illinois Shines RECs (lump sum, ~18 mo)-$15,266
With vs Without Solar in Naperville
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $240/mo | $255/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | $-48/mo |
| 5-Year Cost | $15,552 | $15,300 |
| 25-Year Cost | $158,010 | $93,103 |
| 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
$64,907
Without Solar
With Solar
Year 1
$2,880
$3,461
Year 2Payback Year
$5,933
-$8,307
Year 5
$16,235
$2,444
Year 10
$37,961
$21,436
Year 15
$67,035
$42,282
Year 20
$105,943
$65,792
Year 25
$158,010
$93,103
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1 | $2,880 | $3,461 | -$581 |
| Year 2Payback | $5,933 | -$8,307 | $14,239 |
| Year 3 | $9,169 | -$4,768 | $13,936 |
| Year 4 | $12,599 | -$1,185 | $13,784 |
| Year 5 | $16,235 | $2,444 | $13,790 |
| Year 6 | $20,089 | $6,125 | $13,964 |
| Year 7 | $24,174 | $9,860 | $14,314 |
| Year 8 | $28,505 | $13,654 | $14,851 |
| Year 9 | $33,095 | $17,511 | $15,584 |
| Year 10 | $37,961 | $21,436 | $16,524 |
| Year 11 | $43,118 | $25,435 | $17,683 |
| Year 12 | $48,585 | $29,513 | $19,072 |
| Year 13 | $54,381 | $33,676 | $20,705 |
| Year 14 | $60,523 | $37,930 | $22,593 |
| Year 15 | $67,035 | $42,282 | $24,752 |
| Year 16 | $73,937 | $46,740 | $27,197 |
| Year 17 | $81,253 | $51,311 | $29,942 |
| Year 18 | $89,008 | $56,004 | $33,004 |
| Year 19 | $97,229 | $60,828 | $36,401 |
| Year 20 | $105,943 | $65,792 | $40,151 |
| Year 21 | $115,179 | $70,906 | $44,273 |
| Year 22 | $124,970 | $76,182 | $48,787 |
| Year 23 | $135,348 | $81,632 | $53,716 |
| Year 24 | $146,349 | $87,268 | $59,081 |
| Year 25 | $158,010 | $93,103 | $64,907 |
Start Saving in Naperville
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