Willowbrook, IL solar installation & market data
Updated September 24, 2026Provisional score · under 500 installs By The SolarDNA Data Team
Willowbrook has 155 solar installations across 1 zip code, recent growth not yet measurable, and an installs-weighted Market Score of 42.
Active installations
155
Zip markets
1
Median cost
—
12-mo growth
—
Installers active
12
City Market Score
Good · installs-weighted across 1 zips
Best zip in Willowbrook scores higher than 48% of U.S. zip markets.
Versus Illinois
How Willowbrook compares with the state
Installed cost
—
state median $6.56/W
Market score
42 vs 43
Illinois scores 43
Share of state installs
0.14%
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
Willowbrook by year
27 installs in the trailing twelve months vs 24 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Willowbrook
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 9 | 4 | 1 | — |
| 2 | FRESH COAST SOLAR | 6 | 4 | 1 | — |
| 3 | CERTASUN | 5 | 4 | 1 | — |
| 4 | UNITY SOLAR GROUP | 4 | 3 | 1 | — |
| 5 | KAPITAL ELECTRIC | 3 | 1 | 1 | — |
| 6 | TRUHOME PROS | 3 | 1 | 1 | — |
| 7 | SUNPOWER | 2 | 2 | 1 | — |
| 8 | SUNRISE SOLAR | 2 | 2 | 1 | — |
| 9 | FREEDOM FOREVER | 2 | 1 | 1 | — |
| 10 | ALL ENERGY SOLAR | 1 | 1 | 1 | — |
| 11 | GREEN GRIDS SOLAR | 1 | 1 | 1 | — |
| 12 | SOLAR MITE ILLINOIS | 1 | 1 | 1 | — |
Zip markets
Zips in Willowbrook
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 60527 | 155 | — | 42 C |