How Much Can Solar Save in Sandwich?
Real numbers based on current ComEd rates and Illinois incentives.
$162
Current Bill/mo
$150
Est. Lease + Battery
5.8 yrs
Payback Period
$52,738
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
$162
Annual Cost
$1,944
25-Year Cost (No Solar)
$106,657
Your Solar Investment
7.5 kW System
$21,750
$10,959
After All IL Incentives
DG Rebate ($300/kW)-$2,250
Illinois Shines RECs (lump sum, ~18 mo)-$8,541
With vs Without Solar in Sandwich
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $162/mo | $132/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | +$5/mo |
| 5-Year Cost | $10,498 | $7,920 |
| 25-Year Cost | $106,657 | $53,919 |
| 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
$52,738
Without Solar
With Solar
Year 1Payback Year
$1,944
$1,881
Year 5
$10,959
$1,153
Year 10
$25,623
$11,757
Year 15
$45,248
$23,672
Year 20
$71,511
$37,462
Year 25
$106,657
$53,919
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1Payback | $1,944 | $1,881 | $63 |
| Year 2 | $4,005 | -$4,752 | $8,757 |
| Year 3 | $6,189 | -$2,816 | $9,005 |
| Year 4 | $8,504 | -$848 | $9,353 |
| Year 5 | $10,959 | $1,153 | $9,806 |
| Year 6 | $13,560 | $3,190 | $10,370 |
| Year 7 | $16,318 | $5,266 | $11,052 |
| Year 8 | $19,241 | $7,383 | $11,857 |
| Year 9 | $22,339 | $9,546 | $12,793 |
| Year 10 | $25,623 | $11,757 | $13,867 |
| Year 11 | $29,105 | $14,020 | $15,085 |
| Year 12 | $32,795 | $16,338 | $16,457 |
| Year 13 | $36,707 | $18,717 | $17,990 |
| Year 14 | $40,853 | $21,160 | $19,694 |
| Year 15 | $45,248 | $23,672 | $21,577 |
| Year 16 | $49,907 | $26,258 | $23,649 |
| Year 17 | $54,846 | $28,924 | $25,922 |
| Year 18 | $60,081 | $31,676 | $28,405 |
| Year 19 | $65,629 | $34,520 | $31,110 |
| Year 20 | $71,511 | $37,462 | $34,049 |
| Year 21 | $77,746 | $40,509 | $37,236 |
| Year 22 | $84,355 | $43,671 | $40,684 |
| Year 23 | $91,360 | $46,953 | $44,407 |
| Year 24 | $98,785 | $50,366 | $48,419 |
| Year 25 | $106,657 | $53,919 | $52,738 |
Start Saving in Sandwich
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