How Much Can Solar Save in St. David?
Real numbers based on current Ameren Illinois rates and Illinois incentives.
$110
Current Bill/mo
$132
Est. Lease + Battery
8.4 yrs
Payback Period
$26,972
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
$110
Annual Cost
$1,320
25-Year Cost (No Solar)
$72,421
Your Solar Investment
7.5 kW System
$21,750
$11,993
After All IL Incentives
DG Rebate ($300/kW)-$2,250
Illinois Shines RECs (lump sum, ~18 mo)-$7,507
With vs Without Solar in St. David
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $110/mo | $132/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | $-35/mo |
| 5-Year Cost | $7,128 | $7,920 |
| 25-Year Cost | $72,421 | $45,449 |
| 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
$26,972
Without Solar
With Solar
Year 1
$1,320
$1,742
Year 2Payback Year
$2,719
-$4,006
Year 5
$7,441
$1,377
Year 10
$17,399
$10,809
Year 15
$30,724
$21,037
Year 20
$48,557
$32,417
Year 25
$72,421
$45,449
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1 | $1,320 | $1,742 | -$422 |
| Year 2Payback | $2,719 | -$4,006 | $6,725 |
| Year 3 | $4,202 | -$2,231 | $6,433 |
| Year 4 | $5,774 | -$437 | $6,211 |
| Year 5 | $7,441 | $1,377 | $6,064 |
| Year 6 | $9,207 | $3,213 | $5,994 |
| Year 7 | $11,080 | $5,072 | $6,008 |
| Year 8 | $13,065 | $6,956 | $6,108 |
| Year 9 | $15,169 | $8,868 | $6,301 |
| Year 10 | $17,399 | $10,809 | $6,590 |
| Year 11 | $19,763 | $12,781 | $6,982 |
| Year 12 | $22,268 | $14,787 | $7,481 |
| Year 13 | $24,924 | $16,830 | $8,095 |
| Year 14 | $27,740 | $18,912 | $8,828 |
| Year 15 | $30,724 | $21,037 | $9,688 |
| Year 16 | $33,888 | $23,207 | $10,681 |
| Year 17 | $37,241 | $25,426 | $11,815 |
| Year 18 | $40,795 | $27,698 | $13,097 |
| Year 19 | $44,563 | $30,027 | $14,536 |
| Year 20 | $48,557 | $32,417 | $16,140 |
| Year 21 | $52,790 | $34,872 | $17,919 |
| Year 22 | $57,278 | $37,397 | $19,881 |
| Year 23 | $62,034 | $39,998 | $22,036 |
| Year 24 | $67,077 | $42,680 | $24,396 |
| Year 25 | $72,421 | $45,449 | $26,972 |
Start Saving in St. David
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Ameren Illinois rates projected to rise again next year. Lock in savings now.