How Much Can Solar Save in Knoxville?
Real numbers based on current Ameren Illinois rates and Illinois incentives.
$130
Current Bill/mo
$140
Est. Lease + Battery
6.4 yrs
Payback Period
$40,721
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
$130
Annual Cost
$1,560
25-Year Cost (No Solar)
$85,589
Your Solar Investment
6 kW System
$17,400
$9,595
After All IL Incentives
DG Rebate ($300/kW)-$1,800
Illinois Shines RECs (lump sum, ~18 mo)-$6,005
With vs Without Solar in Knoxville
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $130/mo | $105/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | +$3/mo |
| 5-Year Cost | $8,424 | $6,300 |
| 25-Year Cost | $85,589 | $44,868 |
| 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
$40,721
Without Solar
With Solar
Year 1Payback Year
$1,560
$1,522
Year 5
$8,794
$1,847
Year 10
$20,562
$10,458
Year 15
$36,311
$20,158
Year 20
$57,386
$31,411
Year 25
$85,589
$44,867
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1Payback | $1,560 | $1,522 | $38 |
| Year 2 | $3,214 | -$2,938 | $6,152 |
| Year 3 | $4,966 | -$1,370 | $6,336 |
| Year 4 | $6,824 | $225 | $6,600 |
| Year 5 | $8,794 | $1,847 | $6,947 |
| Year 6 | $10,881 | $3,500 | $7,382 |
| Year 7 | $13,094 | $5,185 | $7,910 |
| Year 8 | $15,440 | $6,904 | $8,536 |
| Year 9 | $17,926 | $8,661 | $9,265 |
| Year 10 | $20,562 | $10,458 | $10,104 |
| Year 11 | $23,356 | $12,299 | $11,057 |
| Year 12 | $26,317 | $14,185 | $12,132 |
| Year 13 | $29,456 | $16,122 | $13,334 |
| Year 14 | $32,784 | $18,111 | $14,672 |
| Year 15 | $36,311 | $20,158 | $16,152 |
| Year 16 | $40,049 | $22,267 | $17,782 |
| Year 17 | $44,012 | $24,442 | $19,570 |
| Year 18 | $48,213 | $26,687 | $21,526 |
| Year 19 | $52,666 | $29,009 | $23,657 |
| Year 20 | $57,386 | $31,411 | $25,974 |
| Year 21 | $62,389 | $33,902 | $28,487 |
| Year 22 | $67,692 | $36,485 | $31,207 |
| Year 23 | $73,313 | $39,169 | $34,144 |
| Year 24 | $79,272 | $41,961 | $37,312 |
| Year 25 | $85,589 | $44,867 | $40,721 |
Start Saving in Knoxville
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