How Much Can Solar Save in Karnak?
Real numbers based on current Ameren Illinois rates and Illinois incentives.
$111
Current Bill/mo
$132
Est. Lease + Battery
6 yrs
Payback Period
$37,338
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
$111
Annual Cost
$1,332
25-Year Cost (No Solar)
$73,080
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 Karnak
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $111/mo | $88/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | +$8/mo |
| 5-Year Cost | $7,193 | $5,280 |
| 25-Year Cost | $73,080 | $35,742 |
| 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
$37,338
Without Solar
With Solar
Year 1Payback Year
$1,332
$1,234
Year 5
$7,509
$1,346
Year 10
$17,557
$8,278
Year 15
$31,004
$16,049
Year 20
$48,998
$25,031
Year 25
$73,080
$35,742
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1Payback | $1,332 | $1,234 | $98 |
| Year 2 | $2,744 | -$2,521 | $5,265 |
| Year 3 | $4,241 | -$1,252 | $5,493 |
| Year 4 | $5,827 | $37 | $5,790 |
| Year 5 | $7,509 | $1,346 | $6,162 |
| Year 6 | $9,291 | $2,679 | $6,612 |
| Year 7 | $11,181 | $4,037 | $7,144 |
| Year 8 | $13,183 | $5,421 | $7,763 |
| Year 9 | $15,306 | $6,834 | $8,473 |
| Year 10 | $17,557 | $8,278 | $9,279 |
| Year 11 | $19,942 | $9,755 | $10,188 |
| Year 12 | $22,471 | $11,268 | $11,203 |
| Year 13 | $25,151 | $12,819 | $12,332 |
| Year 14 | $27,992 | $14,412 | $13,580 |
| Year 15 | $31,004 | $16,049 | $14,954 |
| Year 16 | $34,196 | $17,735 | $16,461 |
| Year 17 | $37,580 | $19,472 | $18,108 |
| Year 18 | $41,166 | $21,264 | $19,903 |
| Year 19 | $44,968 | $23,115 | $21,853 |
| Year 20 | $48,998 | $25,031 | $23,968 |
| Year 21 | $53,270 | $27,015 | $26,256 |
| Year 22 | $57,799 | $29,072 | $28,726 |
| Year 23 | $62,598 | $31,209 | $31,390 |
| Year 24 | $67,686 | $33,430 | $34,257 |
| Year 25 | $73,080 | $35,742 | $37,338 |
Start Saving in Karnak
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Ameren Illinois rates projected to rise again next year. Lock in savings now.