Naperville, IL solar installation & market data
Updated September 1, 2026 By The SolarDNA Data Team
Naperville has 1,201 solar installations across 5 zip codes, installations down 20.1% over the trailing twelve months, and an installs-weighted Market Score of 39.
Active installations
1,201
Zip markets
5
Median cost
—
12-mo growth
▼ 20.1%
Installers active
47
City Market Score
Good · installs-weighted across 5 zips
Best zip in Naperville scores higher than 54% of U.S. zip markets.
Versus Illinois
How Naperville compares with the state
Installed cost
—
state median $6.56/W
Market score
39 vs 43
Illinois scores 43
Share of state installs
1.07%
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: 161–197 installs (midpoint 179)
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
Naperville by year
199 installs in the trailing twelve months vs 249 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Naperville
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | BRS FIELD OPS | 70 | 38 | 4 | — |
| 2 | CERTASUN | 53 | 37 | 4 | — |
| 3 | TESLA | 27 | 6 | 4 | — |
| 4 | FRESH COAST SOLAR | 24 | 13 | 4 | — |
| 5 | BLUE RAVEN SOLAR | 21 | 0 | 4 | — |
| 6 | GREENGRIDS | 13 | 12 | 2 | — |
| 7 | GREENLINK SOLAR SOLUTIONS | 12 | 11 | 4 | — |
| 8 | SPARC SOLAR | 10 | 9 | 2 | — |
| 9 | UNITY SOLAR GROUP | 10 | 8 | 3 | — |
| 10 | REFICIENCY | 9 | 5 | 3 | — |
| 11 | QUALITY SOLAR | 8 | 2 | 3 | — |
| 12 | FREEDOM FOREVER | 8 | 5 | 3 | — |
| 13 | SUNRUN | 7 | 4 | 1 | — |
| 14 | POWUR PBC | 7 | 0 | 3 | — |
| 15 | WINDFREE WIND & SOLAR ENERGY | 5 | 1 | 3 | — |
| 16 | GRNE-NELNET | 5 | 0 | 3 | — |
| 17 | FIBONACCI ENERGY | 4 | 2 | 3 | — |
| 18 | BRIGHT PLANET SOLAR | 4 | 4 | 3 | — |
| 19 | SUNHEAT SOLAR | 3 | 3 | 1 | — |
| 20 | ETW ENERGY | 3 | 3 | 3 | — |
| 21 | REVOLUTION ENERGY SYSTEMS | 3 | 1 | 3 | — |
| 22 | SIGE ELECTRIC | 3 | 3 | 2 | — |
| 23 | TRON SOLAR | 2 | 2 | 2 | — |
| 24 | SUPPLIED ENERGY | 2 | 0 | 2 | — |
| 25 | JDK ACQUISITIONS | 2 | 2 | 2 | — |