Stephenson County, IL solar installation & market data
Updated September 23, 2026 By The SolarDNA Data Team
Stephenson County has 1,041 solar installations across 13 zip codes, installations down 1.9% over the trailing twelve months, and an installs-weighted Market Score of 45.
Active installations
1,041
Zip markets
13
Median cost
—
12-mo growth
▼ 1.9%
Installers active
29
County Market Score
Good · installs-weighted across 13 zips
Best zip in Stephenson County scores higher than 85% of U.S. zip markets.
Versus Illinois
How Stephenson County compares with the state
Installed cost
—
state median $6.56/W
Market score
45 vs 43
Illinois scores 43
Share of state installs
0.92%
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: 136–166 installs (midpoint 151)
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
Stephenson County by year
152 installs in the trailing twelve months vs 155 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Stephenson County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | STATELINE SOLAR | 86 | 42 | 12 | — |
| 2 | LEGACY SOLAR | 24 | 24 | 6 | — |
| 3 | SUNRUN | 21 | 6 | 1 | — |
| 4 | FREEDOM FOREVER | 17 | 12 | 4 | — |
| 5 | ICONIC ENERGY | 16 | 4 | 7 | — |
| 6 | LGCY POWER | 11 | 8 | 4 | — |
| 7 | CR SOLAR LIMITED LIABILITY COMPANY | 9 | 9 | 6 | — |
| 8 | EAGLE POINT SOLAR | 8 | 4 | 4 | — |
| 9 | BRIGHT PLANET SOLAR | 8 | 7 | 1 | — |
| 10 | ARROW ENERGY SOLUTIONS | 7 | 2 | 5 | — |
| 11 | BLUE SKY SMART SOLUTIONS | 5 | 0 | 1 | — |
| 12 | RECON SOLAR CORPORATION | 4 | 1 | 2 | — |
| 13 | SUNPOWER | 4 | 4 | 1 | — |
| 14 | CR SOLAR | 3 | 3 | 2 | — |
| 15 | QUALITY SOLAR | 3 | 3 | 2 | — |
| 16 | TRON SOLAR | 3 | 1 | 2 | — |
| 17 | REVOLUTION ENERGY SYSTEMS | 2 | 1 | 2 | — |
| 18 | GREENLINK SOLAR SOLUTIONS | 2 | 1 | 2 | — |
| 19 | RETHINK ELECTRIC | 2 | 2 | 2 | — |
| 20 | GOODPWR | 2 | 1 | 2 | — |
| 21 | CR SOLAR DBA EEQUALS | 1 | 1 | 1 | — |
| 22 | MIDWEST SOLUTIONS | 1 | 1 | 1 | — |
| 23 | RECON CORPORATION | 1 | 0 | 1 | — |
| 24 | JCW ENTERPRISES | 1 | 0 | 1 | — |
| 25 | MARK KLECKLER | 1 | 0 | 1 | — |