Jo Daviess County, IL solar installation & market data
Updated October 1, 2026 By The SolarDNA Data Team
Jo Daviess County has 787 solar installations across 9 zip codes, installations up 25.2% over the trailing twelve months, and an installs-weighted Market Score of 46.
Active installations
787
Zip markets
9
Median cost
—
12-mo growth
▲ 25.2%
Installers active
15
County Market Score
Great · installs-weighted across 9 zips
Best zip in Jo Daviess County scores higher than 98% of U.S. zip markets.
Versus Illinois
How Jo Daviess County compares with the state
Installed cost
—
state median $6.56/W
Market score
46 vs 43
Illinois scores 43
Share of state installs
0.70%
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: 142–182 installs (midpoint 162)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±13% band. Not a forecast of permits or policy.
Growth & pricing
Jo Daviess County by year
144 installs in the trailing twelve months vs 115 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Jo Daviess County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | ARROW ENERGY SOLUTIONS | 92 | 19 | 8 | — |
| 2 | EAGLE POINT SOLAR | 48 | 13 | 7 | — |
| 3 | STATELINE SOLAR | 29 | 7 | 6 | — |
| 4 | LEGACY SOLAR | 9 | 9 | 4 | — |
| 5 | FREEDOM FOREVER | 6 | 5 | 2 | — |
| 6 | GROBSTICK SOLAR | 2 | 0 | 2 | — |
| 7 | ICONIC ENERGY | 2 | 1 | 1 | — |
| 8 | CR SOLAR | 2 | 1 | 1 | — |
| 9 | RECON SOLAR CORPORATION | 2 | 2 | 1 | — |
| 10 | BLUE SKY SOLAR | 1 | 0 | 1 | — |
| 11 | CR SOLAR LIMITED LIABILITY COMPANY | 1 | 1 | 1 | — |
| 12 | PALMETTO SOLAR | 1 | 1 | 1 | — |
| 13 | BRIGHT PLANET SOLAR | 1 | 0 | 1 | — |
| 14 | SOLAR COMFORT LLP | 1 | 0 | 1 | — |
| 15 | LGCY POWER | 1 | 1 | 1 | — |