At CORVUS PRO SOLAR, our goal is to make this process as transparent and “easy” as possible, a sentiment echoed by many of your neighbors in our 4.9 star Google Reviews.
Your system at a glance
48 panels, 22.08 kW, producing about 25,629 kWh a year.
Your actual roof layout from the design team.
22.08 kW
48 panels
25,629
kWh made each year
115%
of your power covered
What you pay every month, for 25 years
Orange is Ameren Illinois, climbing 13.5% a year. Green is your solar payment, locked to 2.99% a year. The gap between them is money you keep.
Ameren Illinois bill
Solar payment
Your system
System size
22.08 kW
Panels
48
Panel model
REC460AA Pure-RX-DC
Energy offset
115%
Year 1 production
25,629 kWh
Utility
Ameren Illinois
Monthly solar payment
$268.58
Current power bill
$300
Where this lands
Your solar payment is lower than your power bill from month one, and the distance only widens.
Today
Ameren$300/mo
Solar$269/mo
You keep $31 a month
Year 10
Ameren$938/mo
Solar$350/mo
You keep $588 a month
Year 25
Ameren$6,266/mo
Solar$545/mo
You keep $5,722 a month
Year by year
Your first five years, with all 25 a click away. Ameren Illinois escalated 13.5% annually from $300 a month. Solar escalated 2.99% annually from $268.58 a month.
| Year | Ameren Illinois | Solar | Saved / mo | Saved / yr | Running total |
|---|---|---|---|---|---|
| 1 | $300 | $269 | $31 | $377 | $377 |
| 2 | $340 | $277 | $64 | $767 | $1,144 |
| 3 | $386 | $285 | $102 | $1,219 | $2,363 |
| 4 | $439 | $293 | $145 | $1,743 | $4,106 |
| 5 | $498 | $302 | $196 | $2,348 | $6,454 |
| 25 yr | $605,549 | $117,353 | $488,196 | $488,196 |
View all 25 yearsShow less
| Year | Ameren Illinois | Solar | Saved / mo | Saved / yr | Running total |
|---|---|---|---|---|---|
| 6 | $565 | $311 | $254 | $3,046 | $9,500 |
| 7 | $641 | $321 | $321 | $3,850 | $13,350 |
| 8 | $728 | $330 | $398 | $4,774 | $18,124 |
| 9 | $826 | $340 | $486 | $5,835 | $23,959 |
| 10 | $938 | $350 | $588 | $7,051 | $31,011 |
| 11 | $1,064 | $361 | $704 | $8,445 | $39,455 |
| 12 | $1,208 | $371 | $837 | $10,040 | $49,495 |
| 13 | $1,371 | $382 | $989 | $11,863 | $61,359 |
| 14 | $1,556 | $394 | $1,162 | $13,947 | $75,306 |
| 15 | $1,766 | $406 | $1,361 | $16,327 | $91,633 |
| 16 | $2,005 | $418 | $1,587 | $19,043 | $110,676 |
| 17 | $2,275 | $430 | $1,845 | $22,141 | $132,817 |
| 18 | $2,583 | $443 | $2,139 | $25,672 | $158,489 |
| 19 | $2,931 | $456 | $2,475 | $29,697 | $188,187 |
| 20 | $3,327 | $470 | $2,857 | $34,282 | $222,469 |
| 21 | $3,776 | $484 | $3,292 | $39,503 | $261,972 |
| 22 | $4,286 | $499 | $3,787 | $45,446 | $307,418 |
| 23 | $4,864 | $514 | $4,351 | $52,211 | $359,629 |
| 24 | $5,521 | $529 | $4,992 | $59,907 | $419,535 |
| 25 | $6,266 | $545 | $5,722 | $68,661 | $488,196 |
The fine print
- What this compares. Your current average power bill of $300 a month against your solar payment of $268.58 a month, over 25 years. Utility escalated at 13.5% per year, solar at 2.99% per year.
- Still connected to the grid. You are still connected to the utility grid and would be expected to pay a small fixed monthly rate, considered the standard connection fee.
- Ameren Illinois rates are moving. Ameren Illinois residential rates are up about 94% since 2021, roughly 8 cents to 15.5 cents per kWh in 2026, driven by ICC-approved increases and a sharp rise in regional capacity prices. Past increases do not guarantee future ones.
- This is an estimate, not a contract. Production, rates and savings are projections. Nothing here is a guarantee.