Clay County, IL solar installation & market data
Updated August 14, 2026Provisional score · under 500 installs By The SolarDNA Data Team
Clay County has 40 solar installations across 5 zip codes, recent growth not yet measurable, and an installs-weighted Market Score of 41.
Active installations
40
Zip markets
5
Median cost
—
12-mo growth
—
Installers active
8
County Market Score
Good · installs-weighted across 5 zips
Best zip in Clay County scores higher than 38% of U.S. zip markets.
Versus Illinois
How Clay County compares with the state
Installed cost
—
state median $6.56/W
Market score
41 vs 43
Illinois scores 43
Share of state installs
0.04%
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
Clay County by year
11 installs in the trailing twelve months vs 2 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Clay County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | KNOBELSDORFF ELECTRIC | 1 | 1 | 1 | — |
| 2 | GREEN GRIDS SOLAR | 1 | 1 | 1 | — |
| 3 | SOLARSHIPS INSTALLATION SERVICES | 1 | 1 | 1 | — |
| 4 | PALS ELECTRIC | 1 | 1 | 1 | — |
| 5 | SUN SOLAR | 1 | 1 | 1 | — |
| 6 | ARF SOLAR | 1 | 1 | 1 | — |
| 7 | FREEDOM FOREVER | 1 | 0 | 1 | — |
| 8 | ONE PLANET SOLAR | 1 | 1 | 1 | — |