How Much Can Solar Save in Plymouth?
Real numbers based on current Ameren Illinois rates and Illinois incentives.
$108
Current Bill/mo
$128
Est. Lease + Battery
9 yrs
Payback Period
$22,372
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
$108
Annual Cost
$1,296
25-Year Cost (No Solar)
$71,104
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 Plymouth
| Metric | Without Solar | With Solar |
|---|---|---|
| Monthly Cost | $108/mo | $132/mo (loan) |
| Monthly Cash Flow | -$0 (all to utility) | $-43/mo |
| 5-Year Cost | $6,998 | $7,920 |
| 25-Year Cost | $71,104 | $48,732 |
| 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
$22,372
Without Solar
With Solar
Year 1
$1,296
$1,809
Year 2Payback Year
$2,670
-$3,870
Year 5
$7,306
$1,746
Year 10
$17,082
$11,653
Year 15
$30,166
$22,497
Year 20
$47,674
$34,672
Year 25
$71,104
$48,732
| Year | Without Solar | With Solar | Cumulative Savings |
|---|---|---|---|
| Year 1 | $1,296 | $1,809 | -$513 |
| Year 2Payback | $2,670 | -$3,870 | $6,540 |
| Year 3 | $4,126 | -$2,021 | $6,147 |
| Year 4 | $5,670 | -$150 | $5,819 |
| Year 5 | $7,306 | $1,746 | $5,560 |
| Year 6 | $9,040 | $3,667 | $5,373 |
| Year 7 | $10,878 | $5,616 | $5,262 |
| Year 8 | $12,827 | $7,596 | $5,231 |
| Year 9 | $14,893 | $9,607 | $5,286 |
| Year 10 | $17,082 | $11,653 | $5,429 |
| Year 11 | $19,403 | $13,736 | $5,667 |
| Year 12 | $21,863 | $15,859 | $6,004 |
| Year 13 | $24,471 | $18,025 | $6,446 |
| Year 14 | $27,236 | $20,236 | $6,999 |
| Year 15 | $30,166 | $22,497 | $7,669 |
| Year 16 | $33,272 | $24,810 | $8,461 |
| Year 17 | $36,564 | $27,180 | $9,383 |
| Year 18 | $40,054 | $29,611 | $10,443 |
| Year 19 | $43,753 | $32,107 | $11,646 |
| Year 20 | $47,674 | $34,672 | $13,002 |
| Year 21 | $51,831 | $37,312 | $14,518 |
| Year 22 | $56,236 | $40,033 | $16,204 |
| Year 23 | $60,907 | $42,838 | $18,068 |
| Year 24 | $65,857 | $45,736 | $20,121 |
| Year 25 | $71,104 | $48,732 | $22,372 |
Start Saving in Plymouth
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Ameren Illinois rates projected to rise again next year. Lock in savings now.