How Much Can Solar Save in Potomac?
Real numbers based on current Ameren Illinois rates and Illinois incentives.
$117
Current Bill/mo
$134
Est. Lease + Battery
6.9 yrs
Payback Period
$34,826
25-Year Savings
What You're Paying Now
Without solar, here's what Ameren Illinois electricity will cost you over time at 6% annual rate increases.
Monthly Bill
$117
Annual Cost
$1,404
25-Year Cost (No Solar)
$77,030
Your Solar Investment
6 kW System
$17,400
$9,595
After All IL Incentives
DG Rebate ($300/kW)-$1,800
Illinois Shines RECs (lump sum, ~18 mo)-$6,005
With vs Without Solar in Potomac
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $117/mo | $105/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | $-6/mo |
| 5-Year Cost | $7,582 | $6,300 |
| 25-Year Cost | $77,030 | $42,204 |
| 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
$34,826
Without Solar
With Solar
Year 1
$1,404
$1,482
Year 2Payback Year
$2,892
-$3,022
Year 5
$7,914
$1,613
Year 10
$18,506
$9,890
Year 15
$32,679
$19,115
Year 20
$51,647
$29,695
Year 25
$77,030
$42,204
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1 | $1,404 | $1,482 | -$78 |
| Year 2Payback | $2,892 | -$3,022 | $5,914 |
| Year 3 | $4,470 | -$1,500 | $5,970 |
| Year 4 | $6,142 | $45 | $6,097 |
| Year 5 | $7,914 | $1,613 | $6,301 |
| Year 6 | $9,793 | $3,208 | $6,585 |
| Year 7 | $11,785 | $4,831 | $6,954 |
| Year 8 | $13,896 | $6,484 | $7,412 |
| Year 9 | $16,134 | $8,170 | $7,964 |
| Year 10 | $18,506 | $9,890 | $8,616 |
| Year 11 | $21,020 | $11,648 | $9,372 |
| Year 12 | $23,685 | $13,447 | $10,239 |
| Year 13 | $26,511 | $15,288 | $11,222 |
| Year 14 | $29,505 | $17,177 | $12,329 |
| Year 15 | $32,679 | $19,115 | $13,565 |
| Year 16 | $36,044 | $21,107 | $14,937 |
| Year 17 | $39,611 | $23,156 | $16,454 |
| Year 18 | $43,392 | $25,268 | $18,124 |
| Year 19 | $47,399 | $27,446 | $19,953 |
| Year 20 | $51,647 | $29,695 | $21,952 |
| Year 21 | $56,150 | $32,021 | $24,129 |
| Year 22 | $60,923 | $34,428 | $26,495 |
| Year 23 | $65,982 | $36,924 | $29,059 |
| Year 24 | $71,345 | $39,513 | $31,832 |
| Year 25 | $77,030 | $42,204 | $34,826 |
Start Saving in Potomac
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