Oswego, IL solar installation & market data
Updated September 14, 2026 By The SolarDNA Data Team
Oswego has 712 solar installations across 1 zip code, installations down 20.2% over the trailing twelve months, and an installs-weighted Market Score of 40.
Active installations
712
Zip markets
1
Median cost
—
12-mo growth
▼ 20.2%
Installers active
12
City Market Score
Good · installs-weighted across 1 zips
Best zip in Oswego scores higher than 33% of U.S. zip markets.
Versus Illinois
How Oswego compares with the state
Installed cost
—
state median $6.56/W
Market score
40 vs 43
Illinois scores 43
Share of state installs
0.63%
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: 80–98 installs (midpoint 89)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±10% band. Not a forecast of permits or policy.
Growth & pricing
Oswego by year
99 installs in the trailing twelve months vs 124 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Oswego
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 56 | 21 | 1 | — |
| 2 | BRS FIELD OPS | 40 | 36 | 1 | — |
| 3 | CERTASUN | 11 | 5 | 1 | — |
| 4 | BLUE RAVEN SOLAR | 10 | 0 | 1 | — |
| 5 | GREENGRIDS | 8 | 3 | 1 | — |
| 6 | FREEDOM FOREVER | 7 | 3 | 1 | — |
| 7 | BRIGHT PLANET SOLAR | 6 | 2 | 1 | — |
| 8 | GREEN GRIDS SOLAR | 5 | 5 | 1 | — |
| 9 | ION DEVELOPER | 5 | 1 | 1 | — |
| 10 | UNITY SOLAR GROUP | 4 | 4 | 1 | — |
| 11 | TESLA | 4 | 2 | 1 | — |
| 12 | FRESH COAST SOLAR | 3 | 2 | 1 | — |
Zip markets
Zips in Oswego
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 60543 | 712 | — | 40 C |