How Much Can Solar Save in Winnetka?
Real numbers based on current ComEd rates and Illinois incentives.
$259
Current Bill/mo
$201
Est. Lease + Battery
5.8 yrs
Payback Period
$88,490
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
11.5 kW System
$33,350
$17,793
After All IL Incentives
DG Rebate ($300/kW)-$3,450
Illinois Shines RECs (lump sum, ~18 mo)-$12,107
With vs Without Solar in Winnetka
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $259/mo | $202/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | +$22/mo |
| 5-Year Cost | $16,783 | $12,120 |
| 25-Year Cost | $170,519 | $82,029 |
| 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
$88,490
Without Solar
With Solar
Year 1Payback Year
$3,108
$2,842
Year 5
$17,520
$2,531
Year 10
$40,966
$18,519
Year 15
$72,342
$36,466
Year 20
$114,330
$57,232
Year 25
$170,519
$82,029
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1Payback | $3,108 | $2,842 | $266 |
| Year 2 | $6,402 | -$6,383 | $12,786 |
| Year 3 | $9,895 | -$3,459 | $13,354 |
| Year 4 | $13,596 | -$489 | $14,085 |
| Year 5 | $17,520 | $2,531 | $14,989 |
| Year 6 | $21,679 | $5,604 | $16,076 |
| Year 7 | $26,088 | $8,734 | $17,354 |
| Year 8 | $30,761 | $11,927 | $18,834 |
| Year 9 | $35,715 | $15,187 | $20,528 |
| Year 10 | $40,966 | $18,519 | $22,447 |
| Year 11 | $46,532 | $21,928 | $24,604 |
| Year 12 | $52,432 | $25,421 | $27,011 |
| Year 13 | $58,686 | $29,003 | $29,682 |
| Year 14 | $65,315 | $32,683 | $32,632 |
| Year 15 | $72,342 | $36,466 | $35,876 |
| Year 16 | $79,790 | $40,360 | $39,430 |
| Year 17 | $87,686 | $44,375 | $43,311 |
| Year 18 | $96,055 | $48,519 | $47,536 |
| Year 19 | $104,926 | $52,801 | $52,125 |
| Year 20 | $114,330 | $57,232 | $57,098 |
| Year 21 | $124,297 | $61,822 | $62,475 |
| Year 22 | $134,863 | $66,584 | $68,279 |
| Year 23 | $146,063 | $71,530 | $74,533 |
| Year 24 | $157,935 | $76,673 | $81,261 |
| Year 25 | $170,519 | $82,029 | $88,490 |
Start Saving in Winnetka
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