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
5.6 yrs
Payback Period
$76,846
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
$29,000
$14,612
After All IL Incentives
DG Rebate ($300/kW)-$3,000
Illinois Shines RECs (lump sum, ~18 mo)-$11,388
With vs Without Solar in Downers Grove
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $223/mo | $176/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | +$18/mo |
| 5-Year Cost | $14,450 | $10,560 |
| 25-Year Cost | $146,817 | $69,971 |
| 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
$76,846
Without Solar
With Solar
Year 1Payback Year
$2,676
$2,464
Year 5
$15,085
$1,296
Year 10
$35,272
$15,135
Year 15
$62,286
$30,652
Year 20
$98,438
$48,584
Year 25
$146,817
$69,971
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1Payback | $2,676 | $2,464 | $212 |
| Year 2 | $5,513 | -$6,427 | $11,939 |
| Year 3 | $8,519 | -$3,893 | $12,412 |
| Year 4 | $11,706 | -$1,320 | $13,026 |
| Year 5 | $15,085 | $1,296 | $13,789 |
| Year 6 | $18,666 | $3,957 | $14,709 |
| Year 7 | $22,462 | $6,668 | $15,794 |
| Year 8 | $26,486 | $9,431 | $17,054 |
| Year 9 | $30,751 | $12,252 | $18,498 |
| Year 10 | $35,272 | $15,135 | $20,137 |
| Year 11 | $40,064 | $18,084 | $21,980 |
| Year 12 | $45,144 | $21,105 | $24,039 |
| Year 13 | $50,529 | $24,202 | $26,326 |
| Year 14 | $56,236 | $27,383 | $28,854 |
| Year 15 | $62,286 | $30,652 | $31,634 |
| Year 16 | $68,700 | $34,017 | $34,683 |
| Year 17 | $75,498 | $37,485 | $38,013 |
| Year 18 | $82,704 | $41,063 | $41,641 |
| Year 19 | $90,342 | $44,760 | $45,582 |
| Year 20 | $98,438 | $48,584 | $49,854 |
| Year 21 | $107,021 | $52,545 | $54,475 |
| Year 22 | $116,118 | $56,654 | $59,464 |
| Year 23 | $125,761 | $60,920 | $64,841 |
| Year 24 | $135,982 | $65,355 | $70,628 |
| Year 25 | $146,817 | $69,971 | $76,846 |
Start Saving in Downers Grove
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