How Much Can Solar Save in Fairfield?
Real numbers based on current Ameren Illinois rates and Illinois incentives.
$118
Current Bill/mo
$135
Est. Lease + Battery
6.3 yrs
Payback Period
$37,972
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
$118
Annual Cost
$1,416
25-Year Cost (No Solar)
$77,688
Your Solar Investment
5.5 kW System
$15,950
$8,795
After All IL Incentives
DG Rebate ($300/kW)-$1,650
Illinois Shines RECs (lump sum, ~18 mo)-$5,505
With vs Without Solar in Fairfield
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $118/mo | $97/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | +$4/mo |
| 5-Year Cost | $7,646 | $5,820 |
| 25-Year Cost | $77,688 | $39,716 |
| 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
$37,972
Without Solar
With Solar
Year 1Payback Year
$1,416
$1,369
Year 5
$7,982
$1,544
Year 10
$18,664
$9,239
Year 15
$32,959
$17,870
Year 20
$52,088
$27,839
Year 25
$77,688
$39,716
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1Payback | $1,416 | $1,369 | $47 |
| Year 2 | $2,917 | -$2,749 | $5,666 |
| Year 3 | $4,508 | -$1,341 | $5,849 |
| Year 4 | $6,194 | $90 | $6,105 |
| Year 5 | $7,982 | $1,544 | $6,439 |
| Year 6 | $9,877 | $3,023 | $6,854 |
| Year 7 | $11,886 | $4,530 | $7,355 |
| Year 8 | $14,015 | $6,067 | $7,948 |
| Year 9 | $16,272 | $7,636 | $8,636 |
| Year 10 | $18,664 | $9,239 | $9,425 |
| Year 11 | $21,200 | $10,880 | $10,320 |
| Year 12 | $23,888 | $12,560 | $11,328 |
| Year 13 | $26,737 | $14,283 | $12,454 |
| Year 14 | $29,757 | $16,052 | $13,706 |
| Year 15 | $32,959 | $17,870 | $15,089 |
| Year 16 | $36,352 | $19,741 | $16,611 |
| Year 17 | $39,949 | $21,669 | $18,280 |
| Year 18 | $43,762 | $23,659 | $20,104 |
| Year 19 | $47,804 | $25,714 | $22,091 |
| Year 20 | $52,088 | $27,839 | $24,249 |
| Year 21 | $56,630 | $30,040 | $26,590 |
| Year 22 | $61,443 | $32,322 | $29,121 |
| Year 23 | $66,546 | $34,691 | $31,855 |
| Year 24 | $71,955 | $37,154 | $34,801 |
| Year 25 | $77,688 | $39,716 | $37,972 |
Start Saving in Fairfield
Get a free, personalized solar analysis based on your actual Ameren Illinois bill and roof. Lease or own — we'll find the best option.
✓ $0 down lease available — save from day 1 with no upfront cost
Ameren Illinois rates projected to rise again next year. Lock in savings now.