Randolph County, IL solar installation & market data
Updated October 1, 2026Provisional score · under 500 installs By The SolarDNA Data Team
Randolph County has 447 solar installations across 14 zip codes, installations up 43.8% over the trailing twelve months, and an installs-weighted Market Score of 41.
Active installations
447
Zip markets
14
Median cost
—
12-mo growth
▲ 43.8%
Installers active
49
County Market Score
Good · installs-weighted across 14 zips
Best zip in Randolph County scores higher than 45% of U.S. zip markets.
Versus Illinois
How Randolph County compares with the state
Installed cost
—
state median $6.56/W
Market score
41 vs 43
Illinois scores 43
Share of state installs
0.40%
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: 125–169 installs (midpoint 147)
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
Randolph County by year
128 installs in the trailing twelve months vs 89 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Randolph County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | A&I ELECTRIC | 49 | 24 | 10 | — |
| 2 | FREEDOM FOREVER | 15 | 13 | 6 | — |
| 3 | SOLARSHIPS INSTALLATION SERVICES | 11 | 11 | 6 | — |
| 4 | LGCY POWER | 10 | 6 | 5 | — |
| 5 | CORVUS PRO SOLAR LLP | 8 | 6 | 5 | — |
| 6 | OFF GRID ENERGY SOLUTIONS | 8 | 8 | 5 | — |
| 7 | STRAIGHTUP SOLAR | 7 | 2 | 4 | — |
| 8 | LOWRY ELECTRIC | 6 | 2 | 2 | — |
| 9 | SUN SOLAR | 6 | 4 | 3 | — |
| 10 | CR SOLAR | 5 | 1 | 2 | — |
| 11 | BKJ SOLAR | 5 | 2 | 3 | — |
| 12 | CONTEMPORARY CONTRACTING | 5 | 5 | 4 | — |
| 13 | AVEYO OFF GRID ENERGY SOLUTIONS | 5 | 5 | 3 | — |
| 14 | MIDWEST SOLAR SOLUTIONS | 4 | 0 | 3 | — |
| 15 | GOODPWR | 4 | 4 | 3 | — |
| 16 | A&I BUILDERS | 4 | 2 | 2 | — |
| 17 | OFF GRID ENERGY SOLUTIONS DBA AVEYO | 3 | 2 | 2 | — |
| 18 | SPARC SOLAR | 3 | 3 | 1 | — |
| 19 | ADVANCED ENERGY SOLUTIONS GROUP | 2 | 2 | 2 | — |
| 20 | ABSOLUTE CLIMATE | 2 | 2 | 2 | — |
| 21 | GRP WEGMAN LOWRY ELECTRIC COMPANY | 2 | 1 | 1 | — |
| 22 | KNOBELSDORFF ELECTRIC | 2 | 0 | 1 | — |
| 23 | A-1 SOLAR SALES | 2 | 2 | 2 | — |
| 24 | ASTRAWATT SOLAR | 2 | 2 | 2 | — |
| 25 | ABSOLUTE CLIMATE D B A C H ELECTRIC | 2 | 0 | 2 | — |