Allentown, PA 18109 solar market data
Updated September 17, 2026Provisional score · under 500 installs By The SolarDNA Data Team
Allentown 18109 has 116 solar installations at a median installed cost of $4.00/W, recent growth not yet measurable, and a Market Score of 44 — higher than 63% of U.S. zip markets.
Versus Pennsylvania
How 18109 compares with the state
Installed cost
$1.99/W below
state median $5.99/W
Market score
44 vs 50
Pennsylvania scores 50
Share of state installs
0.13%
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
18109 by year
9 installs in the trailing twelve months vs 13 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 18109
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | SUN TO SUN | 1 | 0 | 100.44 | $4.00 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 18032 Catasauqua | 3.2 km | 114 | $7.09 | 33 |
| 18018 Bethlehem | 4.1 km | 164 | $6.00 | 35 |
| 18102 Allentown | 4.6 km | 79 | $6.53 | 33 |
| 18017 Bethlehem | 5.1 km | 442 | $6.55 | 30 |
| 18103 Allentown | 5.7 km | 436 | $6.62 | 34 |
| 18052 Whitehall | 5.8 km | 307 | $6.63 | 34 |
Same city
Other zips in Allentown
Equipment
What gets installed in 18109
Share of systems with a recorded brand
Modules
TENKSOLAR100.0%
Inverters
SUSTAINABLE ENERGY TECHNOLOGIES100.0%
Frequently asked
Quick answers about 18109
How many solar installations are there in 18109?
SolarDNA counts 116 active solar installations in Allentown 18109, 112 of them residential, with data through September 17, 2026.
How much does solar cost in 18109?
The median residential system in 18109 cost $4.00 per watt over the trailing twelve months, $1.99/W below the Pennsylvania median.
Is solar growing in 18109?
Recent growth cannot be measured yet for 18109: too few recent installs (data runs through September 17, 2026).
Who installs solar in 18109?
SUN TO SUN lead the 1 installers with systems in 18109. The full comp set is above.
Is 18109 a good market for solar sales?
18109 scores 44 out of 100 (Good, higher than 63% of U.S. zip markets). With under 500 installations the score is provisional.