McDonough County, IL solar installation & market data
Updated September 21, 2026Provisional score · under 500 installs By The SolarDNA Data Team
McDonough County has 287 solar installations across 11 zip codes, installations up 42.9% over the trailing twelve months, and an installs-weighted Market Score of 41.
Active installations
287
Zip markets
11
Median cost
—
12-mo growth
▲ 42.9%
Installers active
38
County Market Score
Good · installs-weighted across 11 zips
Best zip in McDonough County scores higher than 48% of U.S. zip markets.
Versus Illinois
How McDonough County compares with the state
Installed cost
—
state median $6.56/W
Market score
41 vs 43
Illinois scores 43
Share of state installs
0.25%
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: 78–106 installs (midpoint 92)
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
McDonough County by year
80 installs in the trailing twelve months vs 56 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in McDonough County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 17 | 9 | 3 | — |
| 2 | FREEDOM FOREVER | 13 | 13 | 4 | — |
| 3 | CR SOLAR | 10 | 10 | 3 | — |
| 4 | TRI-STATE RENEWABLE ENERGY | 8 | 3 | 3 | — |
| 5 | LGCY POWER | 7 | 3 | 4 | — |
| 6 | ONE EARTH SOLAR | 6 | 6 | 3 | — |
| 7 | SOURCE SOLAR | 6 | 6 | 1 | — |
| 8 | SUNSPOT SOLAR | 5 | 0 | 1 | — |
| 9 | TRON SOLAR | 5 | 4 | 2 | — |
| 10 | GOODPWR | 4 | 4 | 3 | — |
| 11 | OFF GRID ENERGY SOLUTIONS | 4 | 3 | 3 | — |
| 12 | BLUE SKY SMART SOLUTIONS | 3 | 0 | 1 | — |
| 13 | GENERAL ENERGY | 3 | 0 | 1 | — |
| 14 | HARVEST ENERGY SOLUTIONS | 3 | 0 | 2 | — |
| 15 | REVOLUTION ENERGY SYSTEMS | 3 | 2 | 2 | — |
| 16 | TITAN SOLAR POWER | 2 | 0 | 2 | — |
| 17 | LEGACY SOLAR | 1 | 0 | 1 | — |
| 18 | ADVANCED RENEWABLE CONCEPTS | 1 | 0 | 1 | — |
| 19 | EAGLE POINT SOLAR | 1 | 1 | 1 | — |
| 20 | STRAIGHT UP SOLAR | 1 | 1 | 1 | — |
| 21 | OFF GRID BLUE SKY SMART SOLUTIONS | 1 | 0 | 1 | — |
| 22 | 360 ELECTRIC | 1 | 1 | 1 | — |
| 23 | STRAIGHTUP SOLAR | 1 | 0 | 1 | — |
| 24 | BLUESKY SMART SOLUTIONS | 1 | 0 | 1 | — |
| 25 | SPARC SOLAR | 1 | 1 | 1 | — |