How Much Can Solar Save in Wilmette?
Real numbers based on current ComEd rates and Illinois incentives.
$259
Current Bill/mo
$199
Est. Lease + Battery
5.7 yrs
Payback Period
$88,176
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
$259
Annual Cost
$3,108
25-Year Cost (No Solar)
$170,519
Your Solar Investment
11 kW System
$31,900
$17,019
After All IL Incentives
DG Rebate ($300/kW)-$3,300
Illinois Shines RECs (lump sum, ~18 mo)-$11,581
With vs Without Solar in Wilmette
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $259/mo | $193/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | +$27/mo |
| 5-Year Cost | $16,783 | $11,580 |
| 25-Year Cost | $170,519 | $82,343 |
| 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
$88,176
Without Solar
With Solar
Year 1Payback Year
$3,108
$2,784
Year 5
$17,520
$2,795
Year 10
$40,966
$18,603
Year 15
$72,342
$36,475
Year 20
$114,330
$57,303
Year 25
$170,519
$82,343
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1Payback | $3,108 | $2,784 | $324 |
| Year 2 | $6,402 | -$5,970 | $12,373 |
| Year 3 | $9,895 | -$3,099 | $12,993 |
| Year 4 | $13,596 | -$178 | $13,774 |
| Year 5 | $17,520 | $2,795 | $14,725 |
| Year 6 | $21,679 | $5,825 | $15,854 |
| Year 7 | $26,088 | $8,916 | $17,172 |
| Year 8 | $30,761 | $12,072 | $18,689 |
| Year 9 | $35,715 | $15,299 | $20,416 |
| Year 10 | $40,966 | $18,603 | $22,363 |
| Year 11 | $46,532 | $21,988 | $24,544 |
| Year 12 | $52,432 | $25,460 | $26,971 |
| Year 13 | $58,686 | $29,028 | $29,658 |
| Year 14 | $65,315 | $32,697 | $32,618 |
| Year 15 | $72,342 | $36,475 | $35,867 |
| Year 16 | $79,790 | $40,370 | $39,421 |
| Year 17 | $87,686 | $44,390 | $43,295 |
| Year 18 | $96,055 | $48,546 | $47,508 |
| Year 19 | $104,926 | $52,847 | $52,079 |
| Year 20 | $114,330 | $57,303 | $57,026 |
| Year 21 | $124,297 | $61,927 | $62,371 |
| Year 22 | $134,863 | $66,729 | $68,135 |
| Year 23 | $146,063 | $71,723 | $74,340 |
| Year 24 | $157,935 | $76,922 | $81,012 |
| Year 25 | $170,519 | $82,343 | $88,176 |
Start Saving in Wilmette
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