How Much Can Solar Save in Vienna?
Real numbers based on current Ameren Illinois rates and Illinois incentives.
$116
Current Bill/mo
$137
Est. Lease + Battery
6.2 yrs
Payback Period
$39,666
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 Vienna
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $116/mo | $97/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | +$7/mo |
| 5-Year Cost | $7,517 | $5,820 |
| 25-Year Cost | $76,371 | $36,705 |
| 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
$39,666
Without Solar
With Solar
Year 1Payback Year
$1,392
$1,311
Year 5
$7,847
$1,223
Year 10
$18,348
$8,496
Year 15
$32,400
$16,568
Year 20
$51,206
$25,800
Year 25
$76,371
$36,705
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1Payback | $1,392 | $1,311 | $81 |
| Year 2 | $2,868 | -$2,867 | $5,734 |
| Year 3 | $4,432 | -$1,522 | $5,954 |
| Year 4 | $6,089 | -$160 | $6,249 |
| Year 5 | $7,847 | $1,223 | $6,624 |
| Year 6 | $9,710 | $2,627 | $7,083 |
| Year 7 | $11,684 | $4,054 | $7,630 |
| Year 8 | $13,777 | $5,507 | $8,271 |
| Year 9 | $15,996 | $6,986 | $9,009 |
| Year 10 | $18,348 | $8,496 | $9,852 |
| Year 11 | $20,841 | $10,036 | $10,804 |
| Year 12 | $23,483 | $11,611 | $11,872 |
| Year 13 | $26,284 | $13,223 | $13,061 |
| Year 14 | $29,253 | $14,874 | $14,379 |
| Year 15 | $32,400 | $16,568 | $15,833 |
| Year 16 | $35,736 | $18,307 | $17,429 |
| Year 17 | $39,272 | $20,097 | $19,176 |
| Year 18 | $43,021 | $21,939 | $21,082 |
| Year 19 | $46,994 | $23,839 | $23,155 |
| Year 20 | $51,206 | $25,800 | $25,405 |
| Year 21 | $55,670 | $27,828 | $27,842 |
| Year 22 | $60,402 | $29,927 | $30,476 |
| Year 23 | $65,418 | $32,102 | $33,316 |
| Year 24 | $70,735 | $34,359 | $36,376 |
| Year 25 | $76,371 | $36,705 | $39,666 |
Start Saving in Vienna
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Ameren Illinois rates projected to rise again next year. Lock in savings now.