How Much Can Solar Save in St. Charles?
Real numbers based on current ComEd rates and Illinois incentives.
$201
Current Bill/mo
$168
Est. Lease + Battery
5.7 yrs
Payback Period
$65,255
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
$201
Annual Cost
$2,412
25-Year Cost (No Solar)
$132,333
Your Solar Investment
9 kW System
$26,100
$13,151
After All IL Incentives
DG Rebate ($300/kW)-$2,700
Illinois Shines RECs (lump sum, ~18 mo)-$10,249
With vs Without Solar in St. Charles
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $201/mo | $158/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | +$10/mo |
| 5-Year Cost | $13,025 | $9,480 |
| 25-Year Cost | $132,333 | $67,078 |
| 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
$65,255
Without Solar
With Solar
Year 1Payback Year
$2,412
$2,298
Year 5
$13,597
$1,614
Year 10
$31,792
$14,655
Year 15
$56,142
$29,386
Year 20
$88,727
$46,524
Year 25
$132,333
$67,079
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1Payback | $2,412 | $2,298 | $114 |
| Year 2 | $4,969 | -$5,619 | $10,588 |
| Year 3 | $7,679 | -$3,249 | $10,928 |
| Year 4 | $10,552 | -$839 | $11,391 |
| Year 5 | $13,597 | $1,614 | $11,982 |
| Year 6 | $16,824 | $4,114 | $12,710 |
| Year 7 | $20,246 | $6,665 | $13,581 |
| Year 8 | $23,873 | $9,269 | $14,604 |
| Year 9 | $27,717 | $11,931 | $15,786 |
| Year 10 | $31,792 | $14,655 | $17,137 |
| Year 11 | $36,112 | $17,447 | $18,665 |
| Year 12 | $40,690 | $20,310 | $20,380 |
| Year 13 | $45,544 | $23,250 | $22,294 |
| Year 14 | $50,688 | $26,273 | $24,415 |
| Year 15 | $56,142 | $29,386 | $26,756 |
| Year 16 | $61,922 | $32,593 | $29,329 |
| Year 17 | $68,049 | $35,903 | $32,146 |
| Year 18 | $74,544 | $39,323 | $35,222 |
| Year 19 | $81,429 | $42,860 | $38,569 |
| Year 20 | $88,727 | $46,524 | $42,203 |
| Year 21 | $96,462 | $50,323 | $46,139 |
| Year 22 | $104,662 | $54,267 | $50,395 |
| Year 23 | $113,354 | $58,367 | $54,987 |
| Year 24 | $122,567 | $62,634 | $59,934 |
| Year 25 | $132,333 | $67,079 | $65,255 |
Start Saving in St. Charles
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