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
$99.60
Current power bill
$118
Where this lands
Your solar payment is lower than your power bill from month one, and the distance only widens.
Today
Ameren$118/mo
Solar$100/mo
You keep $18 a month
Year 10
Ameren$369/mo
Solar$130/mo
You keep $239 a month
Year 25
Ameren$2,465/mo
Solar$202/mo
You keep $2,263 a month
Year by year
Your first five years, with all 25 a click away. Ameren Illinois escalated 13.5% annually from $118 a month. Solar escalated 2.99% annually from $99.60 a month.
| Year | Ameren Illinois | Solar | Saved / mo | Saved / yr | Running total |
|---|---|---|---|---|---|
| 1 | $118 | $100 | $18 | $221 | $221 |
| 2 | $134 | $103 | $31 | $376 | $597 |
| 3 | $152 | $106 | $46 | $556 | $1,153 |
| 4 | $173 | $109 | $64 | $765 | $1,918 |
| 5 | $196 | $112 | $84 | $1,005 | $2,923 |
| 25 yr | $238,183 | $43,519 | $194,664 | $194,664 |
View all 25 yearsShow less
| Year | Ameren Illinois | Solar | Saved / mo | Saved / yr | Running total |
|---|---|---|---|---|---|
| 6 | $222 | $115 | $107 | $1,282 | $4,206 |
| 7 | $252 | $119 | $133 | $1,601 | $5,806 |
| 8 | $286 | $122 | $164 | $1,967 | $7,773 |
| 9 | $325 | $126 | $199 | $2,387 | $10,160 |
| 10 | $369 | $130 | $239 | $2,868 | $13,028 |
| 11 | $419 | $134 | $285 | $3,419 | $16,447 |
| 12 | $475 | $138 | $337 | $4,049 | $20,496 |
| 13 | $539 | $142 | $397 | $4,770 | $25,266 |
| 14 | $612 | $146 | $466 | $5,592 | $30,858 |
| 15 | $695 | $150 | $544 | $6,532 | $37,390 |
| 16 | $789 | $155 | $634 | $7,603 | $44,993 |
| 17 | $895 | $160 | $735 | $8,825 | $53,818 |
| 18 | $1,016 | $164 | $851 | $10,217 | $64,035 |
| 19 | $1,153 | $169 | $984 | $11,804 | $75,839 |
| 20 | $1,309 | $174 | $1,134 | $13,611 | $89,450 |
| 21 | $1,485 | $180 | $1,306 | $15,669 | $105,119 |
| 22 | $1,686 | $185 | $1,501 | $18,010 | $123,129 |
| 23 | $1,913 | $190 | $1,723 | $20,675 | $143,804 |
| 24 | $2,172 | $196 | $1,976 | $23,706 | $167,510 |
| 25 | $2,465 | $202 | $2,263 | $27,154 | $194,664 |
The fine print
- What this compares. Your current average power bill of $118 a month against your solar payment of $99.60 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 are up about 94 percent since 2021, from roughly 8 cents a kWh to about 15.5 cents a kWh in 2026, driven by rate increases approved by the Illinois Commerce Commission 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.