How Much Can Solar Save in Rock Falls?
Real numbers based on current ComEd rates and Illinois incentives.
$122
Current Bill/mo
$132
Est. Lease + Battery
5.6 yrs
Payback Period
$42,210
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
$122
Annual Cost
$1,464
25-Year Cost (No Solar)
$80,322
Your Solar Investment
5.5 kW System
$15,950
$8,037
After All IL Incentives
DG Rebate ($300/kW)-$1,650
Illinois Shines RECs (lump sum, ~18 mo)-$6,263
With vs Without Solar in Rock Falls
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $122/mo | $97/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | +$10/mo |
| 5-Year Cost | $7,906 | $5,820 |
| 25-Year Cost | $80,322 | $38,112 |
| 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
$42,210
Without Solar
With Solar
Year 1Payback Year
$1,464
$1,348
Year 5
$8,253
$675
Year 10
$19,297
$8,236
Year 15
$34,076
$16,701
Year 20
$53,854
$26,472
Year 25
$80,322
$38,111
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1Payback | $1,464 | $1,348 | $116 |
| Year 2 | $3,016 | -$3,548 | $6,564 |
| Year 3 | $4,661 | -$2,162 | $6,823 |
| Year 4 | $6,404 | -$755 | $7,159 |
| Year 5 | $8,253 | $675 | $7,578 |
| Year 6 | $10,212 | $2,130 | $8,082 |
| Year 7 | $12,289 | $3,611 | $8,678 |
| Year 8 | $14,490 | $5,121 | $9,369 |
| Year 9 | $16,823 | $6,662 | $10,162 |
| Year 10 | $19,297 | $8,236 | $11,061 |
| Year 11 | $21,918 | $9,846 | $12,073 |
| Year 12 | $24,698 | $11,494 | $13,204 |
| Year 13 | $27,643 | $13,184 | $14,459 |
| Year 14 | $30,766 | $14,919 | $15,847 |
| Year 15 | $34,076 | $16,701 | $17,375 |
| Year 16 | $37,585 | $18,536 | $19,049 |
| Year 17 | $41,304 | $20,426 | $20,878 |
| Year 18 | $45,246 | $22,376 | $22,870 |
| Year 19 | $49,425 | $24,389 | $25,035 |
| Year 20 | $53,854 | $26,472 | $27,382 |
| Year 21 | $58,549 | $28,629 | $29,920 |
| Year 22 | $63,526 | $30,865 | $32,661 |
| Year 23 | $68,802 | $33,187 | $35,615 |
| Year 24 | $74,394 | $35,600 | $38,794 |
| Year 25 | $80,322 | $38,111 | $42,210 |
Start Saving in Rock Falls
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