Cass County, IL solar installation & market data
Updated September 21, 2026Provisional score · under 500 installs By The SolarDNA Data Team
Cass County has 169 solar installations across 5 zip codes, installations up 79.4% over the trailing twelve months, and an installs-weighted Market Score of 41.
Active installations
169
Zip markets
5
Median cost
—
12-mo growth
▲ 79.4%
Installers active
26
County Market Score
Good · installs-weighted across 5 zips
Best zip in Cass County scores higher than 45% of U.S. zip markets.
Versus Illinois
How Cass County compares with the state
Installed cost
—
state median $6.56/W
Market score
41 vs 43
Illinois scores 43
Share of state installs
0.15%
of 112.7K tracked statewide
Battery attach
0.0%
state 0.0%
Statewide momentum
▲ 23.1%
residential solar added in Illinois, 12 months through Jul 2026
Statewide market
136.9K systems
4.0% of homes · utility-reported through Jul 2026
Next-12-month outlook: 60–81 installs (midpoint 70)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±15% band. Not a forecast of permits or policy.
Growth & pricing
Cass County by year
61 installs in the trailing twelve months vs 34 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Cass County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | NEXT BUILDERS DBA AMERICAN ENERGY SYSTEMS | 15 | 15 | 1 | — |
| 2 | FREEDOM FOREVER | 11 | 9 | 4 | — |
| 3 | SUNRUN | 7 | 4 | 4 | — |
| 4 | ONE EARTH SOLAR | 5 | 5 | 1 | — |
| 5 | OFF GRID BLUE SKY SMART SOLUTIONS | 5 | 0 | 2 | — |
| 6 | LGCY POWER | 5 | 3 | 3 | — |
| 7 | IL-SOLAR | 3 | 2 | 1 | — |
| 8 | RYAN ELECTRIC | 3 | 2 | 2 | — |
| 9 | MISSOURI SUN SOLAR | 3 | 2 | 3 | — |
| 10 | BRIGHT PLANET SOLAR | 3 | 2 | 1 | — |
| 11 | AVEYO OFF GRID ENERGY SOLUTIONS | 3 | 3 | 3 | — |
| 12 | AMBIA ENERGY | 2 | 2 | 1 | — |
| 13 | SOLARSHIPS INSTALLATION SERVICES | 2 | 2 | 1 | — |
| 14 | ROUTE 66 SOLAR | 2 | 1 | 1 | — |
| 15 | BLUE SKY SMART SOLUTIONS | 2 | 0 | 2 | — |
| 16 | REVOLUTION ENERGY SYSTEMS | 2 | 0 | 2 | — |
| 17 | CONTEMPORARY CONTRACTING | 1 | 0 | 1 | — |
| 18 | CURRENT SOLUTIONS OF THE MIDWEST | 1 | 0 | 1 | — |
| 19 | SUN SOLAR | 1 | 0 | 1 | — |
| 20 | SOURCE SOLAR | 1 | 1 | 1 | — |
| 21 | OFF GRID ENERGY SOLUTIONS | 1 | 1 | 1 | — |
| 22 | CR SOLAR | 1 | 0 | 1 | — |
| 23 | OFF GRID ENERGY SOLUTIONS DBA AVEYO | 1 | 0 | 1 | — |
| 24 | LEGACY INSTALLATION SERVICES | 1 | 1 | 1 | — |
| 25 | PREMISE | 1 | 1 | 1 | — |