Westmoreland County, PA solar installation & market data
Updated October 1, 2026 By The SolarDNA Data Team
Westmoreland County has 761 solar installations across 51 zip codes at a median installed cost of $5.70/W, installations up 22.8% over the trailing twelve months, and an installs-weighted Market Score of 38.
Active installations
761
Zip markets
51
Median cost
$5.70/W
12-mo growth
▲ 22.8%
Installers active
15
County Market Score
Fair · installs-weighted across 51 zips
Best zip in Westmoreland County scores higher than 95% of U.S. zip markets.
Versus Pennsylvania
How Westmoreland County compares with the state
Installed cost
$0.30/W below
state median $5.99/W
Market score
38 vs 50
Pennsylvania scores 50
Share of state installs
0.86%
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: 154–194 installs (midpoint 174)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±11% band. Not a forecast of permits or policy.
Growth & pricing
Westmoreland County by year
156 installs in the trailing twelve months vs 127 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Westmoreland County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | ENERGY INDEPENDENT SOLUTIONS | 13 | 0 | 8 | $5.62 |
| 2 | SOLAR POWER INDUSTRIES | 10 | 0 | 9 | $5.15 |
| 3 | J B ELECTRIC | 6 | 0 | 5 | $3.83 |
| 4 | VOX ENERGY SOLUTIONS | 6 | 0 | 4 | $7.70 |
| 5 | ASTRUM SOLAR | 5 | 0 | 5 | $5.91 |
| 6 | E D COMPANY | 2 | 0 | 1 | $7.39 |
| 7 | GREEN ELECTRIC SOLAR SOLUTIONS | 2 | 0 | 1 | $3.51 |
| 8 | STANDARD SOLAR | 2 | 0 | 2 | $5.26 |
| 9 | WEST PENN ENERGY SOLUTIONS | 2 | 0 | 2 | $10.40 |
| 10 | SOLARTEC | 1 | 0 | 1 | $5.26 |
| 11 | TRANSTECH TECHNOLOGIES | 1 | 0 | 1 | $9.14 |
| 12 | UNDERWOOD SOLAR FUTURECOM | 1 | 0 | 1 | $5.21 |
| 13 | DYNAMIC ENERGY SOLUTIONS | 1 | 0 | 1 | $1.92 |
| 14 | REAL EARTH POWER | 1 | 0 | 1 | $4.12 |
| 15 | SUN TO SUN | 1 | 0 | 1 | $4.55 |
Zip markets
Zips in Westmoreland County
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 15642 | 123 | $6.24 | 33 D |
| 15068 | 91 | $6.11 | 34 D |
| 15601 | 77 | $5.01 | 39 C |
| 15668 | 53 | $7.64 | 32 F |
| 15650 | 53 | $5.44 | 37 D |
| 15085 | 47 | $1.92 | 52 A |
| 15666 | 37 | $4.83 | 40 C |
| 15613 | 27 | $5.20 | 38 D |
| 15644 | 26 | $5.71 | 35 D |
| 15062 | 19 | $6.29 | 33 F |
| 15632 | 17 | $11.75 | 32 F |
| 15683 | 16 | $4.90 | 39 C |
| 15658 | 15 | $4.55 | 41 C |
| 15626 | 14 | $3.65 | 45 C |
| 15954 | 11 | — | 42 C |
| 15672 | 10 | — | 42 C |
| 15670 | 10 | $9.05 | 32 F |
| 15636 | 8 | $7.17 | 32 F |
| 15944 | 8 | — | 42 C |
| 15923 | 8 | $5.31 | 37 D |
| 15610 | 8 | $5.26 | 37 D |
| 15690 | 7 | — | 42 C |
| 15089 | 7 | — | 42 C |
| 15479 | 6 | — | 42 C |
| 15627 | 6 | — | 42 C |
| 15083 | 5 | — | 42 C |
| 15618 | 5 | — | 42 C |
| 15675 | 4 | — | 42 C |
| 15692 | 4 | — | 42 C |
| 15697 | 4 | $3.53 | 46 B |
| 15639 | 3 | $5.46 | 36 D |
| 15679 | 3 | — | 42 C |
| 15637 | 2 | — | 42 C |
| 15663 | 2 | — | 42 C |
| 15665 | 2 | — | 42 C |
| 15628 | 2 | $5.12 | 38 D |
| 15678 | 2 | — | 42 C |
| 15623 | 2 | — | 42 C |
| 15687 | 2 | — | 42 C |
| 15688 | 2 | $5.55 | 36 D |
| 15622 | 2 | — | 42 C |
| 15646 | 2 | — | 42 C |
| 15615 | 1 | — | 42 C |
| 15612 | 1 | — | 42 C |
| 15671 | 1 | $4.71 | 40 C |
| 15634 | 1 | — | 42 C |
| 15674 | 1 | — | 42 C |
| 15620 | 1 | — | 42 C |
| 15677 | 1 | — | 42 C |
| 15641 | 1 | — | 42 C |
| 15635 | 1 | — | 42 C |