How Much Can Solar Save in Joliet?
Real numbers based on current ComEd rates and Illinois incentives.
$166
Current Bill/mo
$155
Est. Lease + Battery
5.9 yrs
Payback Period
$55,113
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
$166
Annual Cost
$1,992
25-Year Cost (No Solar)
$109,290
Your Solar Investment
8 kW System
$23,200
$11,690
After All IL Incentives
DG Rebate ($300/kW)-$2,400
Illinois Shines RECs (lump sum, ~18 mo)-$9,110
With vs Without Solar in Joliet
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $166/mo | $140/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | +$4/mo |
| 5-Year Cost | $10,757 | $8,400 |
| 25-Year Cost | $109,290 | $54,177 |
| 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
$55,113
Without Solar
With Solar
Year 1Payback Year
$1,992
$1,947
Year 5
$11,229
$895
Year 10
$26,256
$11,753
Year 15
$46,366
$23,852
Year 20
$73,277
$37,736
Year 25
$109,290
$54,177
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1Payback | $1,992 | $1,947 | $45 |
| Year 2 | $4,104 | -$5,191 | $9,294 |
| Year 3 | $6,342 | -$3,192 | $9,534 |
| Year 4 | $8,714 | -$1,164 | $9,878 |
| Year 5 | $11,229 | $895 | $10,334 |
| Year 6 | $13,895 | $2,988 | $10,907 |
| Year 7 | $16,721 | $5,117 | $11,603 |
| Year 8 | $19,716 | $7,286 | $12,430 |
| Year 9 | $22,891 | $9,497 | $13,394 |
| Year 10 | $26,256 | $11,753 | $14,503 |
| Year 11 | $29,824 | $14,059 | $15,764 |
| Year 12 | $33,605 | $16,417 | $17,187 |
| Year 13 | $37,613 | $18,833 | $18,780 |
| Year 14 | $41,862 | $21,309 | $20,553 |
| Year 15 | $46,366 | $23,852 | $22,514 |
| Year 16 | $51,140 | $26,465 | $24,675 |
| Year 17 | $56,200 | $29,154 | $27,046 |
| Year 18 | $61,564 | $31,925 | $29,640 |
| Year 19 | $67,250 | $34,783 | $32,467 |
| Year 20 | $73,277 | $37,736 | $35,541 |
| Year 21 | $79,666 | $40,790 | $38,875 |
| Year 22 | $86,437 | $43,953 | $42,484 |
| Year 23 | $93,616 | $47,233 | $46,383 |
| Year 24 | $101,225 | $50,638 | $50,587 |
| Year 25 | $109,290 | $54,177 | $55,113 |
Start Saving in Joliet
Get a free, personalized solar analysis based on your actual ComEd bill and roof. Lease or own — we'll find the best option.
✓ $0 down lease available — save from day 1 with no upfront cost
ComEd rates projected to rise again next year. Lock in savings now.