Solar installations in Nassau County, NY
13,623 recorded installations in Nassau County, New York — capacity, prices and the installers doing the work.
Dataset updated . Sources: LBNL Tracking the Sun + city permit records + state programs + USGS/EIA utility-scale.
Severe-weather exposure: solar sites here have been matched to an average of 3.9 hail and 3.9 high-wind NOAA storm events — a regional inspection/maintenance signal (proximity, not confirmed damage).
Search every recorded installation in Nassau County by installer, size, date and equipment.
Search sites →Independent check:Stanford's DeepSolar detected about 25,016 solar arrays here from 2018 satellite imagery — our recorded data covers roughly 54% of that (this county is under-reported in public program data). A yardstick, not dated records.
Most active
Top installers in Nassau County
| # | Installer | Installs here |
|---|---|---|
| 1 | Tesla | 2,034 |
| 2 | Sunation Solar Systems | 1,625 |
| 3 | Nyss | 1,114 |
| 4 | Empower Solar | 945 |
| 5 | Sunrun | 917 |
| 6 | Sunpower | 580 |
| 7 | Nrg Residential Solar Solutions | 579 |
| 8 | Long Island Power Solutions | 385 |
| 9 | Level Solar | 361 |
| 10 | Harvest Power | 294 |
Growth
Installations by year
Frequently asked questions
How many homes have solar in Nassau County?
PanelCensus records 13,623 solar installations in Nassau County, New York (173.0 MW of capacity) — about 2.9% of the county's 477,860 housing units (U.S. Census ACS). Dataset coverage depends on New York's reporting programs, so the true total is higher.
How much does solar cost in Nassau County?
The median installed price for recorded systems in Nassau County is $4.35/W pre-incentive; the median system runs 7.6 kW.
Who installs solar in Nassau County?
The most active recorded installers in Nassau County are Tesla, Sunation Solar Systems, Nyss.
County assignment is derived from installation ZIP codes via the Census 2020 ZCTA↔county crosswalk (primary county by land-area overlap) — approximate at county boundaries. Market penetration = recorded installations ÷ housing units (U.S. Census Bureau ACS 5-Year, Table B25001); it undercounts where dataset coverage is partial. See methodology.