Solar installations in New Castle County, DE
5,795 recorded installations in New Castle County, Delaware — 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 3.6 hail and 4 high-wind NOAA storm events — a regional inspection/maintenance signal (proximity, not confirmed damage).
Search every recorded installation in New Castle County by installer, size, date and equipment.
Search sites →Independent check:Stanford's DeepSolar detected about 4,139 solar arrays here from 2018 satellite imagery — our recorded data covers roughly 140% of that. A yardstick, not dated records.
Most active
Top installers in New Castle County
| # | Installer | Installs here |
|---|---|---|
| 1 | Sungevity | 84 |
| 2 | Liberty Services | 70 |
| 3 | Advanced Solar | 39 |
| 4 | Cmi Solar Electric | 37 |
| 5 | Tesla | 34 |
| 6 | Kw Solar Solutions | 33 |
| 7 | Suntricity | 22 |
| 8 | Liberty Electric | 9 |
| 9 | Flexera | 8 |
| 10 | Terrasol Energies | 3 |
Growth
Installations by year
Frequently asked questions
How many homes have solar in New Castle County?
PanelCensus records 5,795 solar installations in New Castle County, Delaware (140.0 MW of capacity) — about 2.5% of the county's 235,057 housing units (U.S. Census ACS). Dataset coverage depends on Delaware's reporting programs, so the true total is higher.
How much does solar cost in New Castle County?
The median installed price for recorded systems in New Castle County is $4.33/W pre-incentive; the median system runs 7.9 kW.
Who installs solar in New Castle County?
The most active recorded installers in New Castle County are Sungevity, Liberty Services, Advanced Solar.
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.