Nassau County, NY solar installation & market data
Updated August 25, 2026 By The SolarDNA Data Team
Nassau County has 13,865 solar installations across 67 zip codes at a median installed cost of $4.37/W, installations down 4.0% over the trailing twelve months, and an installs-weighted Market Score of 48.
Active installations
13,865
Zip markets
67
Median cost
$4.37/W
12-mo growth
▼ 4.0%
Installers active
204
County Market Score
Great · installs-weighted across 67 zips
Best zip in Nassau County scores higher than 91% of U.S. zip markets.
Versus New York
How Nassau County compares with the state
Installed cost
$0.21/W above
state median $4.16/W
Market score
48 vs 59
New York scores 59
Share of state installs
7.40%
of 187.3K tracked statewide
Battery attach
4.7%
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
Next-12-month outlook: 629–769 installs (midpoint 699)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±10% band. Not a forecast of permits or policy.
Growth & pricing
Nassau County by year
713 installs in the trailing twelve months vs 743 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Nassau County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | TESLA | 2,131 | 43 | 64 | $5.58 |
| 2 | SUNATION SOLAR SYSTEMS | 1,729 | 93 | 64 | $3.88 |
| 3 | NYSS | 1,178 | 9 | 52 | $4.13 |
| 4 | EMPOWER SOLAR | 973 | 36 | 62 | $3.93 |
| 5 | SUNRUN | 946 | 4 | 60 | $3.39 |
| 6 | NRG RESIDENTIAL SOLAR SOLUTIONS | 599 | 0 | 59 | $3.58 |
| 7 | SUNPOWER | 597 | 0 | 58 | $4.81 |
| 8 | LONG ISLAND POWER SOLUTIONS | 403 | 11 | 52 | $3.86 |
| 9 | LEVEL SOLAR | 380 | 0 | 37 | $5.04 |
| 10 | HARVEST POWER | 314 | 25 | 49 | $4.01 |
| 11 | SUNRISE SOLAR | 217 | 0 | 33 | $4.03 |
| 12 | TRINITY SOLAR | 197 | 3 | 45 | $3.68 |
| 13 | GREEN LOGIC | 191 | 4 | 45 | $4.14 |
| 14 | GRID CITY ELECTRIC | 188 | 0 | 35 | $3.69 |
| 15 | SURF CLEAN ENERGY | 128 | 6 | 30 | $5.73 |
| 16 | HYTECH SOLAR | 116 | 7 | 37 | $4.24 |
| 17 | SUNGEVITY | 116 | 0 | 38 | $3.82 |
| 18 | SUNWIZE TECHNOLOGIES | 98 | 0 | 35 | $4.65 |
| 19 | BUILT WELL SOLAR | 86 | 0 | 29 | $3.29 |
| 20 | KAMTECH RESTORATION | 82 | 50 | 35 | $4.68 |
| 21 | DIRECT ENERGY SOLAR | 75 | 0 | 32 | $3.92 |
| 22 | INNOVATED ENERGY SOLUTIONS | 75 | 0 | 33 | $4.04 |
| 23 | WESCO DISTRIBUTION | 74 | 0 | 31 | $3.95 |
| 24 | SOLAR INTEGRATED FUND V | 71 | 0 | 33 | $5.10 |
| 25 | NYS ESSENTIAL POWER | 70 | 6 | 30 | $5.03 |
Zip markets
Zips in Nassau County
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 11758 | 841 | $4.19 | 50 A |
| 11756 | 781 | $4.39 | 50 B |
| 11554 | 674 | $4.26 | 50 B |
| 11710 | 630 | $4.08 | 51 A |
| 11561 | 598 | $4.41 | 49 B |
| 11040 | 538 | $4.23 | 50 B |
| 11793 | 535 | $4.06 | 51 A |
| 11572 | 530 | $4.00 | 51 A |
| 11801 | 501 | $4.39 | 49 B |
| 11735 | 472 | $4.26 | 49 B |
| 11803 | 468 | $4.17 | 50 B |
| 11566 | 441 | $4.10 | 50 B |
| 11590 | 440 | $4.29 | 49 B |
| 11003 | 432 | $5.00 | 46 B |
| 11510 | 410 | $4.43 | 48 B |
| 11783 | 380 | $4.04 | 50 B |
| 11580 | 373 | $5.00 | 45 C |
| 11714 | 349 | $4.22 | 49 B |
| 11762 | 298 | $4.20 | 49 B |
| 11791 | 270 | $4.38 | 48 B |
| 11010 | 260 | $4.73 | 46 B |
| 11581 | 236 | $4.28 | 48 B |
| 11001 | 231 | $4.44 | 47 B |
| 11552 | 225 | $4.43 | 47 B |
| 11558 | 205 | $4.11 | 49 B |
| 11553 | 180 | $5.00 | 44 C |
| 11050 | 168 | $4.76 | 45 C |
| 11501 | 165 | $4.93 | 45 C |
| 11550 | 149 | $4.07 | 49 B |
| 11542 | 148 | $4.66 | 46 B |
| 11563 | 145 | $4.65 | 46 B |
| 11518 | 145 | $4.47 | 47 B |
| 11753 | 122 | $4.52 | 46 B |
| 11575 | 119 | $4.65 | 46 B |
| 11598 | 99 | $4.06 | 48 B |
| 11709 | 88 | $4.52 | 46 B |
| 11596 | 73 | $4.73 | 45 C |
| 11530 | 70 | $4.94 | 44 C |
| 11545 | 67 | $4.81 | 45 C |
| 11577 | 66 | $4.44 | 46 B |
| 11557 | 63 | $4.60 | 46 B |
| 11507 | 58 | $4.35 | 47 B |
| 11804 | 57 | $4.88 | 44 C |
| 11565 | 55 | $5.26 | 42 C |
| 11576 | 52 | $4.58 | 46 B |
| 11771 | 51 | $4.86 | 44 C |
| 11797 | 51 | $4.20 | 47 B |
| 11509 | 49 | $4.53 | 46 B |
| 11030 | 43 | $5.05 | 43 C |
| 11569 | 43 | $5.33 | 42 C |
| 11020 | 43 | $5.60 | 41 C |
| 11559 | 42 | $4.54 | 46 B |
| 11096 | 39 | $4.75 | 45 C |
| 11023 | 38 | $4.74 | 45 C |
| 11514 | 35 | $4.88 | 44 C |
| 11021 | 34 | $4.67 | 45 C |
| 11560 | 31 | $4.09 | 48 B |
| 11516 | 30 | $4.27 | 47 B |
| 11579 | 29 | $4.43 | 46 B |
| 11570 | 20 | $5.05 | 43 C |
| 11732 | 19 | $4.60 | 45 C |
| 11568 | 18 | $4.52 | 46 B |
| 11024 | 16 | $5.60 | 41 C |
| 11520 | 10 | $3.80 | 49 B |
| 11548 | 8 | $5.12 | 43 C |
| 11547 | 5 | $4.32 | 47 B |
| 11765 | 4 | $5.76 | 40 C |