How Much Can Solar Save in Chatham?
Real numbers based on current Ameren Illinois rates and Illinois incentives.
$155
Current Bill/mo
$152
Est. Lease + Battery
6.3 yrs
Payback Period
$48,180
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
$155
Annual Cost
$1,860
25-Year Cost (No Solar)
$102,048
Your Solar Investment
7 kW System
$20,300
$11,194
After All IL Incentives
DG Rebate ($300/kW)-$2,100
Illinois Shines RECs (lump sum, ~18 mo)-$7,006
With vs Without Solar in Chatham
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $155/mo | $123/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | +$5/mo |
| 5-Year Cost | $10,044 | $7,380 |
| 25-Year Cost | $102,048 | $53,868 |
| 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
$48,180
Without Solar
With Solar
Year 1Payback Year
$1,860
$1,803
Year 5
$10,485
$2,307
Year 10
$24,516
$12,559
Year 15
$43,293
$24,154
Year 20
$68,421
$37,660
Year 25
$102,048
$53,868
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1Payback | $1,860 | $1,803 | $57 |
| Year 2 | $3,832 | -$3,373 | $7,205 |
| Year 3 | $5,921 | -$1,513 | $7,434 |
| Year 4 | $8,137 | $380 | $7,757 |
| Year 5 | $10,485 | $2,307 | $8,178 |
| Year 6 | $12,974 | $4,271 | $8,703 |
| Year 7 | $15,613 | $6,276 | $9,337 |
| Year 8 | $18,409 | $8,323 | $10,086 |
| Year 9 | $21,374 | $10,416 | $10,958 |
| Year 10 | $24,516 | $12,559 | $11,957 |
| Year 11 | $27,847 | $14,755 | $13,092 |
| Year 12 | $31,378 | $17,009 | $14,369 |
| Year 13 | $35,121 | $19,323 | $15,798 |
| Year 14 | $39,088 | $21,704 | $17,384 |
| Year 15 | $43,293 | $24,154 | $19,139 |
| Year 16 | $47,751 | $26,681 | $21,070 |
| Year 17 | $52,476 | $29,289 | $23,187 |
| Year 18 | $57,485 | $31,984 | $25,501 |
| Year 19 | $62,794 | $34,772 | $28,022 |
| Year 20 | $68,421 | $37,660 | $30,761 |
| Year 21 | $74,386 | $40,655 | $33,731 |
| Year 22 | $80,710 | $43,765 | $36,945 |
| Year 23 | $87,412 | $46,998 | $40,414 |
| Year 24 | $94,517 | $50,363 | $44,154 |
| Year 25 | $102,048 | $53,868 | $48,180 |
Start Saving in Chatham
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