Whiteside County, IL solar installation & market data
Updated September 24, 2026 By The SolarDNA Data Team
Whiteside County has 715 solar installations across 12 zip codes, installations up 14.6% over the trailing twelve months, and an installs-weighted Market Score of 44.
Active installations
715
Zip markets
12
Median cost
—
12-mo growth
▲ 14.6%
Installers active
54
County Market Score
Good · installs-weighted across 12 zips
Best zip in Whiteside County scores higher than 79% of U.S. zip markets.
Versus Illinois
How Whiteside County compares with the state
Installed cost
—
state median $6.56/W
Market score
44 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: 197–241 installs (midpoint 219)
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
Whiteside County by year
204 installs in the trailing twelve months vs 178 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Whiteside County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | LEGACY SOLAR | 46 | 44 | 9 | — |
| 2 | FREEDOM FOREVER | 35 | 20 | 7 | — |
| 3 | SUNRUN | 32 | 7 | 2 | — |
| 4 | EAGLE POINT SOLAR | 31 | 13 | 7 | — |
| 5 | STATELINE SOLAR | 30 | 9 | 7 | — |
| 6 | ARROW ENERGY SOLUTIONS | 20 | 4 | 6 | — |
| 7 | VOLT | 14 | 13 | 5 | — |
| 8 | ONE EARTH SOLAR | 14 | 14 | 4 | — |
| 9 | ICONIC ENERGY | 13 | 5 | 5 | — |
| 10 | BRIGHT PLANET SOLAR | 11 | 6 | 3 | — |
| 11 | SOURCE SOLAR | 10 | 9 | 3 | — |
| 12 | ADVANCED RENEWABLE CONCEPTS | 6 | 3 | 2 | — |
| 13 | CR SOLAR | 5 | 5 | 2 | — |
| 14 | HARVEST ENERGY SOLUTIONS | 4 | 0 | 2 | — |
| 15 | LGCY POWER | 4 | 2 | 4 | — |
| 16 | REVOLUTION ENERGY SYSTEMS | 4 | 3 | 4 | — |
| 17 | AG TECHNOLOGIES | 4 | 1 | 2 | — |
| 18 | QUALITY SOLAR | 3 | 3 | 3 | — |
| 19 | KAISER ELECTRIC CONTRACTORS | 3 | 0 | 2 | — |
| 20 | AVEYO OFF GRID ENERGY SOLUTIONS | 3 | 3 | 3 | — |
| 21 | GREENLINK SOLAR SOLUTIONS | 3 | 2 | 3 | — |
| 22 | SPARC SOLAR | 2 | 2 | 2 | — |
| 23 | GREENGRIDS | 2 | 2 | 1 | — |
| 24 | HOOSIERLAND EXCAVATING | 2 | 2 | 1 | — |
| 25 | CENTURY ELECTRIC SERVICES | 2 | 2 | 1 | — |