Solar installations in Delaware
9,550 recorded installations — prices, growth by year, county breakdown and the installers doing the work.
Dataset updated . Sources: LBNL Tracking the Sun + city permit records + state programs + USGS/EIA utility-scale.
Most active
Top installers in Delaware
| # | Installer | Installs in DE |
|---|---|---|
| 1 | Sungevity | 126 |
| 2 | Clean Energy Usa | 103 |
| 3 | Liberty Services | 89 |
| 4 | Tesla | 67 |
| 5 | Cmi Solar Electric | 57 |
| 6 | Advanced Solar | 44 |
| 7 | Flexera | 41 |
| 8 | Kw Solar Solutions | 38 |
| 9 | Cnc Solar | 30 |
| 10 | Alutech United | 30 |
| 11 | Suntricity | 26 |
| 12 | Solair | 12 |
| 13 | Liberty Electric | 11 |
| 14 | Wise Power Systems | 8 |
| 15 | Green Street Power Partners | 5 |
Growth
Installations by year
New installs per year and the running cumulative total, plus % of homes with solar (ACS housing units).
By county
Solar by county in Delaware
| County | Installs | % homes | Capacity | Median $/W |
|---|---|---|---|---|
| New Castle County | 5,795 | 2.5% | 140.0 MW | $4.33/W |
| Sussex County | 2,900 | 2.0% | 71.2 MW | $4.41/W |
| Kent County | 809 | 1.1% | 25.3 MW | $4.68/W |
Counties derived from installation ZIP codes (Census ZCTA crosswalk) — approximate at boundaries. Counties marked limited have under 10 recorded installs, so their medians and penetration are indicative only. % homes = recorded installs ÷ housing units (U.S. Census ACS 5-Year, B25001).
Search every recorded Delaware installation — by installer, size, date, storage and equipment.
🔒 Create a free account to export CSVFrequently asked questions
How many solar installations are there in Delaware?
PanelCensus records 9,550 solar installations in Delaware, totalling 260.9 MW of capacity — about 2.1% of the state's 457,958 housing units (U.S. Census ACS) — compiled from LBNL's Tracking the Sun, city permit records, state programs and USGS/EIA utility-scale data. (Coverage depends on what the state publishes, so actual totals are higher.)
How much does solar cost per watt in Delaware?
The median installed price across priced systems in Delaware is $4.38/W pre-incentive. Year-by-year medians are shown on this page.
Who are the biggest solar installers in Delaware?
Sungevity has the most recorded installations in Delaware (126), followed by Clean Energy Usa (103).