Warren County, IL solar installation & market data
Updated September 8, 2026Provisional score · under 500 installs By The SolarDNA Data Team
Warren County has 178 solar installations across 8 zip codes, recent growth not yet measurable, and an installs-weighted Market Score of 41.
Active installations
178
Zip markets
8
Median cost
—
12-mo growth
—
Installers active
33
County Market Score
Good · installs-weighted across 8 zips
Best zip in Warren County scores higher than 45% of U.S. zip markets.
Versus Illinois
How Warren County compares with the state
Installed cost
—
state median $6.56/W
Market score
41 vs 43
Illinois scores 43
Share of state installs
0.16%
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
Growth & pricing
Warren County by year
41 installs in the trailing twelve months vs 39 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Warren County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | FREEDOM FOREVER | 8 | 6 | 2 | — |
| 2 | SUNRUN | 4 | 0 | 3 | — |
| 3 | LGCY POWER | 4 | 4 | 2 | — |
| 4 | PRECISION COMPANIES | 4 | 0 | 2 | — |
| 5 | GROBSTICK SOLAR | 3 | 0 | 2 | — |
| 6 | BRIGHT PLANET SOLAR | 3 | 2 | 2 | — |
| 7 | ADVANCED RENEWABLE CONCEPTS | 3 | 0 | 1 | — |
| 8 | ADT SOLAR | 2 | 1 | 2 | — |
| 9 | AVEYO OFF GRID ENERGY SOLUTIONS | 2 | 2 | 2 | — |
| 10 | KAISER | 2 | 0 | 1 | — |
| 11 | CR SOLAR | 2 | 2 | 1 | — |
| 12 | EAGLE POINT SOLAR | 2 | 1 | 1 | — |
| 13 | PORTER ELECTRIC | 1 | 0 | 1 | — |
| 14 | SOLAR MITE ILLINOIS | 1 | 1 | 1 | — |
| 15 | SOLECTRIC | 1 | 1 | 1 | — |
| 16 | SOLAR POWER MIDWEST | 1 | 0 | 1 | — |
| 17 | BLUE SKY SOLAR | 1 | 0 | 1 | — |
| 18 | REVOLUTION ENERGY SYSTEMS | 1 | 0 | 1 | — |
| 19 | TRON SOLAR | 1 | 1 | 1 | — |
| 20 | LEGACY INSTALLATION SERVICES | 1 | 1 | 1 | — |
| 21 | OFF GRID BLUE SKY SMART SOLUTIONS | 1 | 0 | 1 | — |
| 22 | OFF GRID ENERGY SOLUTIONS | 1 | 1 | 1 | — |
| 23 | 360 ELECTRIC | 1 | 0 | 1 | — |
| 24 | FOSTER S MECHANICAL AND ELECTRIC | 1 | 1 | 1 | — |
| 25 | ATLAS TOTAL HOME | 1 | 0 | 1 | — |