Round Lake, IL solar installation & market data
Updated September 1, 2026 By The SolarDNA Data Team
Round Lake has 987 solar installations across 1 zip code, installations down 33.6% over the trailing twelve months, and an installs-weighted Market Score of 38.
Active installations
987
Zip markets
1
Median cost
—
12-mo growth
▼ 33.6%
Installers active
12
City Market Score
Fair · installs-weighted across 1 zips
Best zip in Round Lake scores higher than 19% of U.S. zip markets.
Versus Illinois
How Round Lake compares with the state
Installed cost
—
state median $6.56/W
Market score
38 vs 43
Illinois scores 43
Share of state installs
0.88%
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: 67–91 installs (midpoint 79)
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
Round Lake by year
93 installs in the trailing twelve months vs 140 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Round Lake
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 99 | 39 | 1 | — |
| 2 | TRON SOLAR | 13 | 1 | 1 | — |
| 3 | FREEDOM FOREVER | 10 | 7 | 1 | — |
| 4 | CERTASUN | 9 | 3 | 1 | — |
| 5 | BRIGHT PLANET SOLAR | 8 | 2 | 1 | — |
| 6 | LGCY POWER | 7 | 6 | 1 | — |
| 7 | SUNPOWER | 7 | 6 | 1 | — |
| 8 | ION SOLAR | 6 | 6 | 1 | — |
| 9 | SUNRISE SOLAR | 5 | 5 | 1 | — |
| 10 | GREEN GRIDS SOLAR | 4 | 4 | 1 | — |
| 11 | BRS FIELD OPS | 4 | 2 | 1 | — |
| 12 | BLUE RAVEN SOLAR | 3 | 0 | 1 | — |
Zip markets
Zips in Round Lake
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 60073 | 987 | — | 38 D |