Lake County, IL solar installation & market data
Updated October 1, 2026 By The SolarDNA Data Team
Lake County has 7,041 solar installations across 28 zip codes, installations down 19.8% over the trailing twelve months, and an installs-weighted Market Score of 40.
Active installations
7,041
Zip markets
28
Median cost
—
12-mo growth
▼ 19.8%
Installers active
101
County Market Score
Good · installs-weighted across 28 zips
Best zip in Lake County scores higher than 70% of U.S. zip markets.
Versus Illinois
How Lake County compares with the state
Installed cost
—
state median $6.56/W
Market score
40 vs 43
Illinois scores 43
Share of state installs
6.25%
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: 781–955 installs (midpoint 868)
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
Lake County by year
963 installs in the trailing twelve months vs 1,201 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Lake County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 634 | 270 | 26 | — |
| 2 | CERTASUN | 109 | 49 | 19 | — |
| 3 | FREEDOM FOREVER | 78 | 55 | 21 | — |
| 4 | FRESH COAST SOLAR | 58 | 28 | 17 | — |
| 5 | TRON SOLAR | 57 | 13 | 20 | — |
| 6 | BRIGHT PLANET SOLAR | 53 | 25 | 16 | — |
| 7 | BLUE RAVEN SOLAR | 49 | 1 | 13 | — |
| 8 | TESLA | 47 | 15 | 15 | — |
| 9 | BRS FIELD OPS | 44 | 28 | 14 | — |
| 10 | SUNPOWER | 35 | 34 | 12 | — |
| 11 | LGCY POWER | 33 | 29 | 14 | — |
| 12 | ION SOLAR | 28 | 28 | 8 | — |
| 13 | WINDFREE WIND & SOLAR ENERGY | 19 | 3 | 14 | — |
| 14 | VIVINT SOLAR DEVELOPER | 19 | 1 | 8 | — |
| 15 | GREEN GRIDS SOLAR | 18 | 17 | 7 | — |
| 16 | SPARC SOLAR | 17 | 6 | 7 | — |
| 17 | QUALITY SOLAR | 15 | 7 | 11 | — |
| 18 | FIBONACCI ENERGY | 15 | 9 | 9 | — |
| 19 | GREENLINK SOLAR SOLUTIONS | 11 | 8 | 8 | — |
| 20 | VOLT | 10 | 10 | 7 | — |
| 21 | ALL ENERGY SOLAR | 10 | 10 | 8 | — |
| 22 | KAPITAL ELECTRIC | 10 | 4 | 9 | — |
| 23 | ION DEVELOPER | 9 | 5 | 7 | — |
| 24 | NATIONAL SOLAR SERVICE | 8 | 1 | 4 | — |
| 25 | CR SOLAR | 8 | 4 | 5 | — |
Zip markets
Zips in Lake County
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 60073 | 987 | — | 38 D |
| 60047 | 536 | — | 45 C |
| 60060 | 478 | — | 37 D |
| 60099 | 471 | — | 34 D |
| 60089 | 428 | — | 40 C |
| 60030 | 422 | — | 43 C |
| 60085 | 379 | — | 43 C |
| 60031 | 376 | — | 33 F |
| 60046 | 367 | — | 43 C |
| 60010 | 362 | — | 43 C |
| 60002 | 324 | — | 43 C |
| 60087 | 291 | — | 42 C |
| 60061 | 245 | — | 42 C |
| 60048 | 188 | — | 42 C |
| 60084 | 175 | — | 42 C |
| 60083 | 155 | — | 42 C |
| 60035 | 152 | — | 42 C |
| 60015 | 137 | — | 42 C |
| 60064 | 113 | — | 42 C |
| 60020 | 109 | — | 42 C |
| 60042 | 88 | — | 41 C |
| 60041 | 76 | — | 41 C |
| 60096 | 63 | — | 41 C |
| 60045 | 47 | — | 41 C |
| 60069 | 41 | — | 41 C |
| 60044 | 20 | — | 41 C |
| 60040 | 10 | — | 41 C |
| 60088 | 1 | — | 41 C |