Marion County, IL solar installation & market data
Updated October 1, 2026Provisional score · under 500 installs By The SolarDNA Data Team
Marion County has 344 solar installations across 11 zip codes, installations up 132.8% over the trailing twelve months, and an installs-weighted Market Score of 48.
Active installations
344
Zip markets
11
Median cost
—
12-mo growth
▲ 132.8%
Installers active
39
County Market Score
Great · installs-weighted across 11 zips
Best zip in Marion County scores higher than 97% of U.S. zip markets.
Versus Illinois
How Marion County compares with the state
Installed cost
—
state median $6.56/W
Market score
48 vs 43
Illinois scores 43
Share of state installs
0.31%
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: 139–187 installs (midpoint 163)
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
Marion County by year
142 installs in the trailing twelve months vs 61 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Marion County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | CR SOLAR | 41 | 37 | 5 | — |
| 2 | SOLARSHIPS INSTALLATION SERVICES | 20 | 19 | 7 | — |
| 3 | LGCY POWER | 19 | 16 | 4 | — |
| 4 | SUN SOLAR | 15 | 8 | 5 | — |
| 5 | GOODPWR | 14 | 13 | 4 | — |
| 6 | FREEDOM FOREVER | 9 | 7 | 5 | — |
| 7 | STRAIGHTUP SOLAR | 7 | 2 | 3 | — |
| 8 | CORVUS PRO SOLAR LLP | 7 | 4 | 4 | — |
| 9 | PALS ELECTRIC | 5 | 4 | 2 | — |
| 10 | REVOLUTION ENERGY SYSTEMS | 5 | 5 | 4 | — |
| 11 | ADVANCED ENERGY SOLUTIONS GROUP | 3 | 2 | 2 | — |
| 12 | KOHRMANN ELECTRIC | 3 | 3 | 1 | — |
| 13 | STRAIGHT UP SOLAR | 3 | 2 | 1 | — |
| 14 | AMBIA ENERGY | 2 | 2 | 1 | — |
| 15 | GRNE-NELNET DBA GRNE SOLAR | 2 | 2 | 2 | — |
| 16 | A-1 SOLAR SALES | 2 | 1 | 2 | — |
| 17 | CONTEMPORARY CONTRACTING | 2 | 0 | 2 | — |
| 18 | AG TECHNOLOGIES | 1 | 0 | 1 | — |
| 19 | MISSOURI SUN SOLAR | 1 | 1 | 1 | — |
| 20 | POWUR PBC | 1 | 1 | 1 | — |
| 21 | SOLAR SOURCE | 1 | 1 | 1 | — |
| 22 | AVEYO OFF GRID ENERGY SOLUTIONS | 1 | 1 | 1 | — |
| 23 | GREEN TECH CONSTRUCTION | 1 | 0 | 1 | — |
| 24 | OFF GRID ENERGY SOLUTIONS DBA AVEYO | 1 | 1 | 1 | — |
| 25 | OFF GRID ENERGY SOLUTIONS | 1 | 1 | 1 | — |