Holtsville, NY 11742 solar market data
Updated February 6, 2026Provisional score · under 500 installs By The SolarDNA Data Team
Holtsville 11742 has 228 solar installations at a median installed cost of $4.34/W, recent growth not yet measurable, and a Market Score of 48 — higher than 78% of U.S. zip markets.
Versus New York
How 11742 compares with the state
Installed cost
$0.18/W above
state median $4.16/W
Market score
48 vs 59
New York scores 59
Share of state installs
0.12%
of 187.3K tracked statewide
Battery attach
1.4%
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
11742 by year
6 installs in the trailing twelve months vs 14 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 11742
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | SUNATION SOLAR SYSTEMS | 33 | 3 | 11.79 | $3.83 |
| 2 | TESLA | 26 | 0 | 8.74 | $5.60 |
| 3 | SUNRUN | 18 | 0 | 7.38 | $4.50 |
| 4 | LEVEL SOLAR | 16 | 0 | 9.19 | $5.05 |
| 5 | SUNPOWER | 12 | 0 | 9.01 | $5.41 |
| 6 | LONG ISLAND POWER SOLUTIONS | 10 | 0 | 10.61 | $3.84 |
| 7 | HARVEST POWER | 9 | 0 | 10.13 | $3.75 |
| 8 | NRG RESIDENTIAL SOLAR SOLUTIONS | 9 | 0 | 7.28 | $3.54 |
| 9 | GREEN LOGIC | 6 | 0 | 9.08 | $4.12 |
| 10 | GREENLEAF SOLAR NY | 6 | 0 | 9.09 | $3.46 |
| 11 | EMPOWER SOLAR | 5 | 0 | 10.29 | $5.41 |
| 12 | HYTECH SOLAR | 4 | 1 | 9.91 | $5.58 |
Equipment
What gets installed in 11742
Share of systems with a recorded brand
Modules
LG ELECTRONICS18.3%
TRINA SOLAR14.1%
SUNPOWER11.3%
REC GROUP10.6%
CSI SOLAR9.9%
Inverters
ENPHASE ENERGY36.8%
SOLAREDGE34.7%
ABB11.8%
SMA AMERICA6.3%
UNKNOWN3.5%
Frequently asked
Quick answers about 11742
How many solar installations are there in 11742?
SolarDNA counts 228 active solar installations in Holtsville 11742, 220 of them residential, with data through February 6, 2026.
How much does solar cost in 11742?
The median residential system in 11742 cost $4.34 per watt over the trailing twelve months, $0.18/W above the New York median.
Is solar growing in 11742?
Recent growth cannot be measured yet for 11742: too few recent installs (data runs through February 6, 2026).
Who installs solar in 11742?
SUNATION SOLAR SYSTEMS, TESLA, SUNRUN lead the 47 installers with systems in 11742. The full comp set is above.
Is 11742 a good market for solar sales?
11742 scores 48 out of 100 (Great, higher than 78% of U.S. zip markets). With under 500 installations the score is provisional.