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
23 panels, 10.58 kW, producing about 13,412 kWh a year.
Your actual roof layout from the design team.
10.58 kW
23 panels
13,412
kWh made each year
100%
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
10.58 kW
Panels
23
Panel model
REC460AA Pure-RX-DC
Energy offset
100%
Year 1 production
13,412 kWh
Utility
Ameren Illinois
Monthly solar payment
$135.59
Current power bill
$207
Where this lands
Your solar payment is lower than your power bill from month one, and the distance only widens.
Today
Ameren$207/mo
Solar$136/mo
You keep $71 a month
Year 10
Ameren$646/mo
Solar$177/mo
You keep $470 a month
Year 25
Ameren$4,319/mo
Solar$275/mo
You keep $4,044 a month
Year by year
Your first five years, with all 25 a click away. Ameren Illinois escalated 13.5% annually from $207 a month. Solar escalated 2.99% annually from $135.59 a month.
| Year | Ameren Illinois | Solar | Saved / mo | Saved / yr | Running total |
|---|---|---|---|---|---|
| 1 | $207 | $136 | $71 | $854 | $854 |
| 2 | $235 | $140 | $95 | $1,140 | $1,994 |
| 3 | $266 | $144 | $123 | $1,470 | $3,464 |
| 4 | $302 | $148 | $154 | $1,850 | $5,314 |
| 5 | $343 | $153 | $191 | $2,287 | $7,601 |
| 25 yr | $417,324 | $59,244 | $358,080 | $358,080 |
View all 25 yearsShow less
| Year | Ameren Illinois | Solar | Saved / mo | Saved / yr | Running total |
|---|---|---|---|---|---|
| 6 | $389 | $157 | $232 | $2,788 | $10,389 |
| 7 | $442 | $162 | $280 | $3,362 | $13,751 |
| 8 | $502 | $167 | $335 | $4,020 | $17,772 |
| 9 | $569 | $172 | $398 | $4,773 | $22,545 |
| 10 | $646 | $177 | $470 | $5,634 | $28,179 |
| 11 | $734 | $182 | $551 | $6,618 | $34,796 |
| 12 | $833 | $187 | $645 | $7,741 | $42,537 |
| 13 | $945 | $193 | $752 | $9,022 | $51,559 |
| 14 | $1,072 | $199 | $874 | $10,483 | $62,042 |
| 15 | $1,217 | $205 | $1,012 | $12,150 | $74,192 |
| 16 | $1,382 | $211 | $1,171 | $14,048 | $88,240 |
| 17 | $1,568 | $217 | $1,351 | $16,211 | $104,450 |
| 18 | $1,780 | $224 | $1,556 | $18,673 | $123,123 |
| 19 | $2,020 | $230 | $1,790 | $21,476 | $144,599 |
| 20 | $2,293 | $237 | $2,055 | $24,666 | $169,265 |
| 21 | $2,602 | $244 | $2,358 | $28,295 | $197,560 |
| 22 | $2,954 | $252 | $2,702 | $32,423 | $229,983 |
| 23 | $3,352 | $259 | $3,093 | $37,118 | $267,101 |
| 24 | $3,805 | $267 | $3,538 | $42,456 | $309,556 |
| 25 | $4,319 | $275 | $4,044 | $48,524 | $358,080 |
The fine print
- What this compares. Your current average power bill of $207 a month against your solar payment of $135.59 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% since 2021, from 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.