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 7.5% 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
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$396/mo
Solar$177/mo
You keep $220 a month
Year 25
Ameren$1,173/mo
Solar$275/mo
You keep $898 a month
Year by year
All 25 years. Ameren Illinois escalated 7.5% 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 | $222 | $140 | $83 | $991 | $1,845 |
| 3 | $239 | $144 | $95 | $1,141 | $2,987 |
| 4 | $257 | $148 | $109 | $1,305 | $4,291 |
| 5 | $276 | $153 | $124 | $1,483 | $5,774 |
| 6 | $297 | $157 | $140 | $1,676 | $7,450 |
| 7 | $319 | $162 | $157 | $1,887 | $9,338 |
| 8 | $343 | $167 | $176 | $2,116 | $11,454 |
| 9 | $369 | $172 | $197 | $2,365 | $13,819 |
| 10 | $396 | $177 | $220 | $2,636 | $16,455 |
| 11 | $426 | $182 | $244 | $2,929 | $19,384 |
| 12 | $458 | $187 | $271 | $3,247 | $22,631 |
| 13 | $492 | $193 | $299 | $3,592 | $26,223 |
| 14 | $529 | $199 | $330 | $3,966 | $30,189 |
| 15 | $569 | $205 | $364 | $4,371 | $34,560 |
| 16 | $612 | $211 | $401 | $4,810 | $39,370 |
| 17 | $658 | $217 | $440 | $5,285 | $44,654 |
| 18 | $707 | $224 | $483 | $5,799 | $50,453 |
| 19 | $760 | $230 | $530 | $6,355 | $56,807 |
| 20 | $817 | $237 | $580 | $6,956 | $63,763 |
| 21 | $878 | $244 | $634 | $7,606 | $71,369 |
| 22 | $944 | $252 | $692 | $8,309 | $79,678 |
| 23 | $1,015 | $259 | $756 | $9,068 | $88,746 |
| 24 | $1,091 | $267 | $824 | $9,888 | $98,634 |
| 25 | $1,173 | $275 | $898 | $10,775 | $109,409 |
| 25 yr | $168,653 | $59,244 | $109,409 | $109,409 |
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
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 7.5% 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.
- Where the numbers come from. System specs, production, offset, the $135.59 monthly payment and the 2.99% solar escalator were all read from your Solo proposal on 2026-07-30. The 7.5% utility escalation is Rundle Solar's standard planning assumption, not a figure from the proposal.
- Ameren Illinois rates are moving. The June 2025 supply price rose roughly 50%, and the June 2026 supply price went from 8.769 cents to about 11 cents per kWh. 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.