Port Jefferson, NY 11777 solar market data
Updated January 26, 2026Provisional score · under 500 installs By The SolarDNA Data Team
Port Jefferson 11777 has 79 solar installations at a median installed cost of $4.64/W, recent growth not yet measurable, and a Market Score of 45 — higher than 70% of U.S. zip markets.
Versus New York
How 11777 compares with the state
Installed cost
$0.48/W above
state median $4.16/W
Market score
45 vs 59
New York scores 59
Share of state installs
0.04%
of 187.3K tracked statewide
Battery attach
8.2%
state 2.1%
Statewide momentum
▲ 25.2%
residential solar added in New York, 12 months through Jul 2026
Statewide market
274.1K systems
6.4% of homes · utility-reported through Jul 2026
Growth & pricing
11777 by year
5 installs in the trailing twelve months vs 4 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 11777
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | TESLA | 12 | 0 | 9.47 | $5.60 |
| 2 | SUNATION SOLAR SYSTEMS | 9 | 3 | 12.68 | $3.37 |
| 3 | LONG ISLAND POWER SOLUTIONS | 5 | 0 | 10.82 | $3.44 |
| 4 | SUNRUN | 5 | 0 | 6.16 | $4.43 |
| 5 | EMPOWER SOLAR | 3 | 0 | 10.61 | $3.93 |
| 6 | COOPER ELECTRIC | 2 | 0 | 13.25 | $4.58 |
| 7 | EASTERN ENERGY SYSTEMS | 2 | 0 | 13.61 | $3.38 |
| 8 | GREENLEAF SOLAR NY | 2 | 0 | 11.61 | $3.60 |
| 9 | NRG RESIDENTIAL SOLAR SOLUTIONS | 2 | 0 | 6.6 | $3.41 |
| 10 | SUNPOWER | 2 | 0 | 11.06 | $4.34 |
| 11 | HARVEST POWER | 1 | 1 | 15.12 | $3.04 |
| 12 | HYTECH SOLAR | 1 | 1 | 19.84 | $4.59 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 11776 Port Jefferson Station | 3.8 km | 333 | $4.65 | 47 |
| 11733 East Setauket | 4.3 km | 222 | $5.00 | 45 |
| 11766 Mount Sinai | 4.6 km | 142 | $4.52 | 46 |
| 11764 Miller Place | 5.9 km | 198 | $4.40 | 47 |
| 11790 Stony Brook | 7.1 km | 148 | $5.00 | 44 |
| 11789 Sound Beach | 7.4 km | 65 | $3.98 | 49 |
Equipment
What gets installed in 11777
Share of systems with a recorded brand
Modules
REC GROUP15.2%
LG ELECTRONICS13.0%
CSI SOLAR10.9%
QCELLS NORTH AMERICA10.9%
SUNPOWER10.9%
Inverters
ENPHASE ENERGY25.5%
SOLAREDGE21.3%
SMA AMERICA17.0%
ABB10.6%
TESLA8.5%
Frequently asked
Quick answers about 11777
How many solar installations are there in 11777?
SolarDNA counts 79 active solar installations in Port Jefferson 11777, 76 of them residential, with data through January 26, 2026.
How much does solar cost in 11777?
The median residential system in 11777 cost $4.64 per watt over the trailing twelve months, $0.48/W above the New York median.
Is solar growing in 11777?
Recent growth cannot be measured yet for 11777: too few recent installs (data runs through January 26, 2026).
Who installs solar in 11777?
TESLA, SUNATION SOLAR SYSTEMS, LONG ISLAND POWER SOLUTIONS lead the 26 installers with systems in 11777. The full comp set is above.
Is 11777 a good market for solar sales?
11777 scores 45 out of 100 (Good, higher than 70% of U.S. zip markets). With under 500 installations the score is provisional.