Allentown, PA 18104 solar market data
Updated September 23, 2026Provisional score · under 500 installs By The SolarDNA Data Team
Allentown 18104 has 382 solar installations at a median installed cost of $6.53/W, recent growth not yet measurable, and a Market Score of 34 — higher than 12% of U.S. zip markets.
Versus Pennsylvania
How 18104 compares with the state
Installed cost
$0.53/W above
state median $5.99/W
Market score
34 vs 50
Pennsylvania scores 50
Share of state installs
0.43%
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
Growth & pricing
18104 by year
45 installs in the trailing twelve months vs 67 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 18104
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | HEAT SHED | 4 | 0 | 6.23 | $7.13 |
| 2 | ENDLESS MTN SOLAR SERVICES | 3 | 0 | 6.37 | $7.00 |
| 3 | ASTRUM SOLAR | 2 | 0 | 8.05 | $5.40 |
| 4 | CROSS RIVER SOLAR | 2 | 0 | 6.79 | $7.16 |
| 5 | MIDATLANTIC RENEWABLES | 2 | 0 | 5.91 | $4.96 |
| 6 | PENN RENEWABLES | 2 | 0 | 7.2 | $8.87 |
| 7 | AZTEC SOLAR POWER | 1 | 0 | 5.04 | $5.02 |
| 8 | EDF RENEWABLE ENERGY | 1 | 0 | 8.74 | $5.37 |
| 9 | KC GREEN ENERGY | 1 | 0 | 7.84 | $6.12 |
| 10 | MOORE ENERGY | 1 | 0 | 4.8 | $6.70 |
| 11 | SONIC DEVELOPMENT | 1 | 0 | 5.52 | $5.82 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 18102 Allentown | 3.8 km | 79 | $6.53 | 33 |
| 18103 Allentown | 5.1 km | 436 | $6.62 | 34 |
| 18106 Allentown | 6.2 km | 78 | $5.40 | 37 |
| 18052 Whitehall | 6.3 km | 307 | $6.63 | 34 |
| 18069 Orefield | 6.8 km | 84 | $5.84 | 35 |
| 18032 Catasauqua | 7.5 km | 114 | $7.09 | 33 |
Same city
Other zips in Allentown
Equipment
What gets installed in 18104
Share of systems with a recorded brand
Modules
SUNPOWER25.0%
GE ENERGY10.0%
MOTECH INDUSTRIES10.0%
SANYO ELECTRIC OF PANASONIC GROUP10.0%
CSI SOLAR5.0%
Inverters
ENPHASE ENERGY25.0%
SUNPOWER25.0%
PV POWERED20.0%
FRONIUS USA15.0%
SMA AMERICA5.0%
Frequently asked
Quick answers about 18104
How many solar installations are there in 18104?
SolarDNA counts 382 active solar installations in Allentown 18104, 372 of them residential, with data through September 23, 2026.
How much does solar cost in 18104?
The median residential system in 18104 cost $6.53 per watt over the trailing twelve months, $0.53/W above the Pennsylvania median.
Is solar growing in 18104?
Recent growth cannot be measured yet for 18104: too few recent installs (data runs through September 23, 2026).
Who installs solar in 18104?
HEAT SHED, ENDLESS MTN SOLAR SERVICES, ASTRUM SOLAR lead the 11 installers with systems in 18104. The full comp set is above.
Is 18104 a good market for solar sales?
18104 scores 34 out of 100 (Fair, higher than 12% of U.S. zip markets). With under 500 installations the score is provisional.