Williamsport, PA solar installation & market data
Updated September 30, 2026Provisional score · under 500 installs By The SolarDNA Data Team
Williamsport has 216 solar installations across 2 zip codes at a median installed cost of $5.66/W, installations up 76.3% over the trailing twelve months, and an installs-weighted Market Score of 36.
Active installations
216
Zip markets
2
Median cost
$5.66/W
12-mo growth
▲ 76.3%
Installers active
7
City Market Score
Fair · installs-weighted across 2 zips
Best zip in Williamsport scores higher than 19% of U.S. zip markets.
Versus Pennsylvania
How Williamsport compares with the state
Installed cost
$0.34/W below
state median $5.99/W
Market score
36 vs 50
Pennsylvania scores 50
Share of state installs
0.24%
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: 65–89 installs (midpoint 77)
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
Williamsport by year
67 installs in the trailing twelve months vs 38 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Williamsport
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | KC LARSON | 9 | 0 | 2 | $5.87 |
| 2 | FISHER SOLAR | 4 | 0 | 1 | $5.68 |
| 3 | SOLAIR ENERGY | 1 | 0 | 1 | $6.30 |
| 4 | ASTRUM SOLAR | 1 | 0 | 1 | $4.45 |
| 5 | ENDLESS MTN SOLAR SERVICES | 1 | 0 | 1 | $7.00 |
| 6 | ENERGY SYSTEMS AND INSTALLATION | 1 | 0 | 1 | $2.95 |
| 7 | RENEWABLE ENERGY FOR PA | 1 | 0 | 1 | $4.71 |