Washington, IL solar installation & market data
Updated September 8, 2025 By The SolarDNA Data Team
Washington has 680 solar installations across 1 zip code, installations down 24.6% over the trailing twelve months, and an installs-weighted Market Score of 38.
Active installations
680
Zip markets
1
Median cost
—
12-mo growth
▼ 24.6%
Installers active
12
City Market Score
Fair · installs-weighted across 1 zips
Best zip in Washington scores higher than 27% of U.S. zip markets.
Versus Illinois
How Washington compares with the state
Installed cost
—
state median $6.56/W
Market score
38 vs 43
Illinois scores 43
Share of state installs
0.60%
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: 158–202 installs (midpoint 180)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±12% band. Not a forecast of permits or policy.
Growth & pricing
Washington by year
205 installs in the trailing twelve months vs 272 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Washington
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 55 | 20 | 1 | — |
| 2 | ROOF TIGER PLLC | 13 | 5 | 1 | — |
| 3 | LGCY POWER | 12 | 9 | 1 | — |
| 4 | FREEDOM FOREVER | 11 | 7 | 1 | — |
| 5 | OASIS WORLD SOLUTIONS | 10 | 4 | 1 | — |
| 6 | OBERLANDER ELECTRIC | 10 | 1 | 1 | — |
| 7 | PORTER ELECTRIC | 9 | 3 | 1 | — |
| 8 | 360 ELECTRIC | 8 | 7 | 1 | — |
| 9 | SOLAR PANTHER | 8 | 2 | 1 | — |
| 10 | BRIGHT PLANET SOLAR | 7 | 5 | 1 | — |
| 11 | LEGACY SOLAR | 6 | 5 | 1 | — |
| 12 | CR SOLAR | 4 | 3 | 1 | — |
Zip markets
Zips in Washington
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 61571 | 680 | — | 38 D |