Bethlehem, PA 18020 solar market data
Updated September 21, 2026Provisional score · under 500 installs By The SolarDNA Data Team
Bethlehem 18020 has 295 solar installations at a median installed cost of $5.65/W, recent growth not yet measurable, and a Market Score of 37 — higher than 18% of U.S. zip markets.
Versus Pennsylvania
How 18020 compares with the state
Installed cost
$0.34/W below
state median $5.99/W
Market score
37 vs 50
Pennsylvania scores 50
Share of state installs
0.33%
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
18020 by year
31 installs in the trailing twelve months vs 41 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 18020
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | ASTRUM SOLAR | 6 | 0 | 8.72 | $4.30 |
| 2 | HEAT SHED | 2 | 0 | 6.44 | $7.59 |
| 3 | KEYSTONE COUNTRY BUILDING GROUPKEYSTONE RENEWABLE ENERGY SOLUTIONS | 1 | 0 | 6.58 | $6.35 |
| 4 | SKY SOLAR SOLUTIONS | 1 | 0 | 6.11 | $4.54 |
| 5 | SONIC DEVELOPMENT | 1 | 0 | 16.35 | $5.75 |
| 6 | SUNTRICITY POWER | 1 | 0 | 3.68 | $8.33 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 18017 Bethlehem | 4.7 km | 442 | $6.55 | 30 |
| 18045 Easton | 5.0 km | 389 | $6.69 | 34 |
| 18018 Bethlehem | 6.7 km | 164 | $6.00 | 35 |
| 18064 Nazareth | 8.5 km | 321 | $6.17 | 35 |
| 18015 Bethlehem | 8.6 km | 143 | $6.10 | 34 |
| 18042 Easton | 9.6 km | 151 | $5.58 | 37 |
Same city
Other zips in Bethlehem
Equipment
What gets installed in 18020
Share of systems with a recorded brand
Modules
SUNPOWER30.0%
SUNTECH POWER30.0%
AMERICAN SOLAR WHOLESALE10.0%
SHARP10.0%
SOLARWORLD INDUSTRIES10.0%
Inverters
ENPHASE ENERGY75.0%
SUNPOWER25.0%
Frequently asked
Quick answers about 18020
How many solar installations are there in 18020?
SolarDNA counts 295 active solar installations in Bethlehem 18020, 286 of them residential, with data through September 21, 2026.
How much does solar cost in 18020?
The median residential system in 18020 cost $5.65 per watt over the trailing twelve months, $0.34/W below the Pennsylvania median.
Is solar growing in 18020?
Recent growth cannot be measured yet for 18020: too few recent installs (data runs through September 21, 2026).
Who installs solar in 18020?
ASTRUM SOLAR, HEAT SHED, KEYSTONE COUNTRY BUILDING GROUPKEYSTONE RENEWABLE ENERGY SOLUTIONS lead the 6 installers with systems in 18020. The full comp set is above.
Is 18020 a good market for solar sales?
18020 scores 37 out of 100 (Fair, higher than 18% of U.S. zip markets). With under 500 installations the score is provisional.