How Much Can Solar Save in Bonnie?
Real numbers based on current Ameren Illinois rates and Illinois incentives.
$115
Current Bill/mo
$131
Est. Lease + Battery
6.1 yrs
Payback Period
$36,265
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
$115
Annual Cost
$1,380
25-Year Cost (No Solar)
$75,713
Your Solar Investment
5 kW System
$14,500
$7,995
After All IL Incentives
DG Rebate ($300/kW)-$1,500
Illinois Shines RECs (lump sum, ~18 mo)-$5,005
With vs Without Solar in Bonnie
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $115/mo | $88/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | +$6/mo |
| 5-Year Cost | $7,452 | $5,280 |
| 25-Year Cost | $75,713 | $39,448 |
| 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
$36,265
Without Solar
With Solar
Year 1Payback Year
$1,380
$1,303
Year 5
$7,779
$1,734
Year 10
$18,189
$9,181
Year 15
$32,121
$17,637
Year 20
$50,764
$27,528
Year 25
$75,713
$39,448
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1Payback | $1,380 | $1,303 | $77 |
| Year 2 | $2,843 | -$2,379 | $5,221 |
| Year 3 | $4,393 | -$1,032 | $5,426 |
| Year 4 | $6,037 | $338 | $5,699 |
| Year 5 | $7,779 | $1,734 | $6,045 |
| Year 6 | $9,626 | $3,159 | $6,467 |
| Year 7 | $11,583 | $4,614 | $6,970 |
| Year 8 | $13,659 | $6,100 | $7,558 |
| Year 9 | $15,858 | $7,622 | $8,236 |
| Year 10 | $18,189 | $9,181 | $9,009 |
| Year 11 | $20,661 | $10,780 | $9,881 |
| Year 12 | $23,281 | $12,422 | $10,859 |
| Year 13 | $26,057 | $14,110 | $11,948 |
| Year 14 | $29,001 | $15,847 | $13,154 |
| Year 15 | $32,121 | $17,637 | $14,484 |
| Year 16 | $35,428 | $19,485 | $15,944 |
| Year 17 | $38,934 | $21,393 | $17,541 |
| Year 18 | $42,650 | $23,366 | $19,284 |
| Year 19 | $46,589 | $25,410 | $21,179 |
| Year 20 | $50,764 | $27,528 | $23,236 |
| Year 21 | $55,190 | $29,727 | $25,463 |
| Year 22 | $59,881 | $32,012 | $27,869 |
| Year 23 | $64,854 | $34,390 | $30,464 |
| Year 24 | $70,125 | $36,866 | $33,260 |
| Year 25 | $75,713 | $39,448 | $36,265 |
Start Saving in Bonnie
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Ameren Illinois rates projected to rise again next year. Lock in savings now.