How Much Can Solar Save in Willowbrook?
Real numbers based on current ComEd rates and Illinois incentives.
$200
Current Bill/mo
$168
Est. Lease + Battery
6 yrs
Payback Period
$62,699
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
$200
Annual Cost
$2,400
25-Year Cost (No Solar)
$131,675
Your Solar Investment
9.5 kW System
$27,550
$13,881
After All IL Incentives
DG Rebate ($300/kW)-$2,850
Illinois Shines RECs (lump sum, ~18 mo)-$10,819
With vs Without Solar in Willowbrook
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $200/mo | $167/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | +$0/mo |
| 5-Year Cost | $12,960 | $10,020 |
| 25-Year Cost | $131,675 | $68,976 |
| 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
$62,699
Without Solar
With Solar
Year 1
$2,400
$2,401
Year 2Payback Year
$4,944
-$5,983
Year 5
$13,529
$1,557
Year 10
$31,634
$15,105
Year 15
$55,862
$30,332
Year 20
$88,285
$47,955
Year 25
$131,675
$68,975
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1 | $2,400 | $2,401 | -$1 |
| Year 2Payback | $4,944 | -$5,983 | $10,927 |
| Year 3 | $7,641 | -$3,511 | $11,151 |
| Year 4 | $10,499 | -$998 | $11,497 |
| Year 5 | $13,529 | $1,557 | $11,972 |
| Year 6 | $16,741 | $4,159 | $12,582 |
| Year 7 | $20,145 | $6,811 | $13,334 |
| Year 8 | $23,754 | $9,517 | $14,237 |
| Year 9 | $27,579 | $12,280 | $15,300 |
| Year 10 | $31,634 | $15,105 | $16,529 |
| Year 11 | $35,932 | $17,996 | $17,936 |
| Year 12 | $40,488 | $20,959 | $19,528 |
| Year 13 | $45,317 | $23,999 | $21,318 |
| Year 14 | $50,436 | $27,121 | $23,315 |
| Year 15 | $55,862 | $30,332 | $25,530 |
| Year 16 | $61,614 | $33,638 | $27,976 |
| Year 17 | $67,711 | $37,045 | $30,666 |
| Year 18 | $74,174 | $40,562 | $33,612 |
| Year 19 | $81,024 | $44,196 | $36,828 |
| Year 20 | $88,285 | $47,955 | $40,331 |
| Year 21 | $95,983 | $51,849 | $44,134 |
| Year 22 | $104,141 | $55,887 | $48,254 |
| Year 23 | $112,790 | $60,080 | $52,710 |
| Year 24 | $121,957 | $64,439 | $57,518 |
| Year 25 | $131,675 | $68,975 | $62,699 |
Start Saving in Willowbrook
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