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
12 panels, 5.52 kW, producing about 5,963 kWh a year.
Your actual roof layout from the design team.
5.52 kW
12 panels
5,963
kWh made each year
113%
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
5.52 kW
Panels
12
Panel model
REC460AA PURE-RX-DC
Energy offset
113%
Year 1 production
5,963 kWh
Utility
Ameren Illinois
Monthly solar payment
$64.60
Current power bill
$96
Where this lands
Your solar payment is lower than your power bill from month one, and the distance only widens.
Today
Ameren$96/mo
Solar$65/mo
You keep $31 a month
Year 10
Ameren$299/mo
Solar$84/mo
You keep $215 a month
Year 25
Ameren$2,000/mo
Solar$131/mo
You keep $1,869 a month
Year by year
Your first five years, with all 25 a click away. Ameren Illinois escalated 13.5% annually from $96 a month. Solar escalated 2.99% annually from $64.60 a month.
| Year | Ameren Illinois | Solar | Saved / mo | Saved / yr | Running total |
|---|---|---|---|---|---|
| 1 | $96 | $65 | $31 | $374 | $374 |
| 2 | $109 | $67 | $42 | $506 | $880 |
| 3 | $123 | $69 | $55 | $658 | $1,537 |
| 4 | $140 | $71 | $69 | $833 | $2,371 |
| 5 | $159 | $73 | $86 | $1,035 | $3,405 |
| 25 yr | $193,271 | $28,226 | $165,045 | $165,045 |
View all 25 yearsShow less
| Year | Ameren Illinois | Solar | Saved / mo | Saved / yr | Running total |
|---|---|---|---|---|---|
| 6 | $180 | $75 | $105 | $1,266 | $4,671 |
| 7 | $205 | $77 | $128 | $1,531 | $6,203 |
| 8 | $232 | $79 | $153 | $1,835 | $8,038 |
| 9 | $264 | $82 | $182 | $2,183 | $10,221 |
| 10 | $299 | $84 | $215 | $2,581 | $12,802 |
| 11 | $340 | $87 | $253 | $3,036 | $15,837 |
| 12 | $386 | $89 | $296 | $3,555 | $19,392 |
| 13 | $438 | $92 | $346 | $4,147 | $23,540 |
| 14 | $497 | $95 | $402 | $4,823 | $28,363 |
| 15 | $564 | $98 | $466 | $5,594 | $33,957 |
| 16 | $640 | $100 | $539 | $6,472 | $40,429 |
| 17 | $726 | $104 | $623 | $7,473 | $47,902 |
| 18 | $824 | $107 | $718 | $8,612 | $56,514 |
| 19 | $936 | $110 | $826 | $9,909 | $66,423 |
| 20 | $1,062 | $113 | $949 | $11,385 | $77,808 |
| 21 | $1,205 | $116 | $1,089 | $13,065 | $90,873 |
| 22 | $1,368 | $120 | $1,248 | $14,976 | $105,849 |
| 23 | $1,553 | $124 | $1,429 | $17,148 | $122,997 |
| 24 | $1,762 | $127 | $1,635 | $19,619 | $142,617 |
| 25 | $2,000 | $131 | $1,869 | $22,428 | $165,045 |
The fine print
- What this compares. Your current average power bill of $96 a month against your solar payment of $64.60 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 have risen about 94 percent 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.