Chester County, PA solar installation & market data
Updated September 29, 2026 By The SolarDNA Data Team
Chester County has 3,867 solar installations across 39 zip codes at a median installed cost of $6.19/W, installations up 35.2% over the trailing twelve months, and an installs-weighted Market Score of 36.
Active installations
3,867
Zip markets
39
Median cost
$6.19/W
12-mo growth
▲ 35.2%
Installers active
100
County Market Score
Fair · installs-weighted across 39 zips
Best zip in Chester County scores higher than 75% of U.S. zip markets.
Versus Pennsylvania
How Chester County compares with the state
Installed cost
$0.20/W above
state median $5.99/W
Market score
36 vs 50
Pennsylvania scores 50
Share of state installs
4.37%
of 88.5K tracked statewide
Battery attach
0.0%
state 0.0%
Statewide momentum
▲ 48.7%
residential solar added in Pennsylvania, 12 months through Jul 2026
Statewide market
105.3K systems
2.8% of homes · utility-reported through Jul 2026
Next-12-month outlook: 507–685 installs (midpoint 596)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±15% band. Not a forecast of permits or policy.
Growth & pricing
Chester County by year
518 installs in the trailing twelve months vs 383 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Chester County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | CONLYN SOLAR PRO | 66 | 0 | 18 | $6.42 |
| 2 | ASTRUM SOLAR | 60 | 0 | 19 | $5.20 |
| 3 | EDF RENEWABLE ENERGY | 39 | 0 | 16 | $6.17 |
| 4 | CMI SOLAR ELECTRIC | 38 | 0 | 16 | $6.04 |
| 5 | SUNPOWER | 35 | 0 | 16 | $8.10 |
| 6 | HEAT SHED | 34 | 0 | 14 | $6.13 |
| 7 | SUNTRICITY POWER | 33 | 0 | 13 | $6.81 |
| 8 | GREENSPRING ENERGY | 30 | 0 | 18 | $6.27 |
| 9 | SOLULAR | 26 | 0 | 13 | $7.67 |
| 10 | MESA ELECTRIC | 24 | 0 | 16 | $9.14 |
| 11 | ADVANCED SOLAR | 19 | 0 | 13 | $5.54 |
| 12 | JK MECHANICAL | 17 | 0 | 14 | $4.45 |
| 13 | EOS ENERGY | 17 | 0 | 11 | $5.91 |
| 14 | PARADISE ENERGY SOLUTIONS | 14 | 0 | 9 | $5.03 |
| 15 | NATURALE | 14 | 0 | 9 | $6.91 |
| 16 | ECLIPSE SOLAR | 12 | 0 | 9 | $5.91 |
| 17 | SMUCKERS ENERGY | 12 | 0 | 6 | $6.56 |
| 18 | AZTEC SOLAR POWER | 11 | 0 | 8 | $6.91 |
| 19 | STANDARD SOLAR | 10 | 0 | 8 | $5.85 |
| 20 | KW SOLAR SOLUTIONS | 9 | 0 | 5 | $7.13 |
| 21 | SOLARDELPHIA | 8 | 0 | 6 | $7.68 |
| 22 | GREENER EXISTENCE | 8 | 0 | 5 | $5.67 |
| 23 | HALLER ENTERPRISES | 8 | 0 | 5 | $5.49 |
| 24 | GREEN POWER ENERGY | 7 | 0 | 7 | $4.16 |
| 25 | SUN TO SUN | 7 | 0 | 4 | $5.49 |
Zip markets
Zips in Chester County
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 19320 | 524 | $5.82 | 36 D |
| 19335 | 398 | $6.39 | 47 B |
| 19380 | 277 | $6.14 | 35 D |
| 19382 | 273 | $6.19 | 34 D |
| 19460 | 273 | $5.97 | 35 D |
| 19355 | 182 | $6.75 | 33 F |
| 19363 | 164 | $5.79 | 36 D |
| 19425 | 161 | $6.30 | 33 D |
| 19348 | 156 | $6.41 | 33 F |
| 19465 | 152 | $6.84 | 33 F |
| 19390 | 138 | $6.21 | 34 D |
| 19352 | 130 | $6.07 | 34 D |
| 19350 | 121 | $6.22 | 33 D |
| 19475 | 111 | $6.86 | 33 F |
| 19344 | 97 | $6.45 | 33 F |
| 19311 | 92 | $6.19 | 33 D |
| 19343 | 88 | $5.90 | 35 D |
| 19365 | 84 | $6.24 | 33 D |
| 19341 | 73 | $5.67 | 36 D |
| 19330 | 65 | $5.94 | 35 D |
| 19362 | 64 | $6.04 | 34 D |
| 19312 | 59 | $6.10 | 34 D |
| 19520 | 46 | $6.08 | 34 D |
| 19310 | 33 | $6.07 | 34 D |
| 19372 | 28 | $6.73 | 32 F |
| 19301 | 28 | $6.03 | 34 D |
| 19333 | 19 | $6.94 | 32 F |
| 19442 | 8 | $8.00 | 32 F |
| 19375 | 5 | $4.52 | 41 C |
| 19421 | 4 | $5.33 | 37 D |
| 19374 | 3 | — | 42 C |
| 19316 | 2 | — | 42 C |
| 19369 | 2 | $5.94 | 34 D |
| 19481 | 2 | — | 42 C |
| 19376 | 1 | $3.54 | 45 C |
| 19367 | 1 | — | 42 C |
| 19345 | 1 | — | 42 C |
| 19351 | 1 | $6.08 | 34 D |
| 19347 | 1 | $4.05 | 43 C |