How Much Can Solar Save in Tamms?
Real numbers based on current Ameren Illinois rates and Illinois incentives.
$116
Current Bill/mo
$136
Est. Lease + Battery
6.2 yrs
Payback Period
$38,984
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
$116
Annual Cost
$1,392
25-Year Cost (No Solar)
$76,371
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 Tamms
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $116/mo | $97/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | +$6/mo |
| 5-Year Cost | $7,517 | $5,820 |
| 25-Year Cost | $76,371 | $37,387 |
| 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
$38,984
Without Solar
With Solar
Year 1Payback Year
$1,392
$1,325
Year 5
$7,847
$1,297
Year 10
$18,348
$8,668
Year 15
$32,400
$16,867
Year 20
$51,206
$26,266
Year 25
$76,371
$37,388
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1Payback | $1,392 | $1,325 | $67 |
| Year 2 | $2,868 | -$2,839 | $5,706 |
| Year 3 | $4,432 | -$1,480 | $5,912 |
| Year 4 | $6,089 | -$102 | $6,191 |
| Year 5 | $7,847 | $1,297 | $6,549 |
| Year 6 | $9,710 | $2,719 | $6,991 |
| Year 7 | $11,684 | $4,165 | $7,519 |
| Year 8 | $13,777 | $5,637 | $8,140 |
| Year 9 | $15,996 | $7,137 | $8,859 |
| Year 10 | $18,348 | $8,668 | $9,680 |
| Year 11 | $20,841 | $10,231 | $10,609 |
| Year 12 | $23,483 | $11,830 | $11,653 |
| Year 13 | $26,284 | $13,467 | $12,817 |
| Year 14 | $29,253 | $15,145 | $14,108 |
| Year 15 | $32,400 | $16,867 | $15,533 |
| Year 16 | $35,736 | $18,637 | $17,100 |
| Year 17 | $39,272 | $20,457 | $18,815 |
| Year 18 | $43,021 | $22,333 | $20,688 |
| Year 19 | $46,994 | $24,268 | $22,726 |
| Year 20 | $51,206 | $26,266 | $24,940 |
| Year 21 | $55,670 | $28,332 | $27,338 |
| Year 22 | $60,402 | $30,472 | $29,930 |
| Year 23 | $65,418 | $32,691 | $32,728 |
| Year 24 | $70,735 | $34,994 | $35,742 |
| Year 25 | $76,371 | $37,388 | $38,984 |
Start Saving in Tamms
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Ameren Illinois rates projected to rise again next year. Lock in savings now.