Solar installations in Delaware
7,905 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 Development | 126 |
| 2 | Clean Energy Usa | 103 |
| 3 | Liberty Services Company | 89 |
| 4 | Tesla Energy | 67 |
| 5 | Cmi Solar Electric | 57 |
| 6 | Advanced Solar | 44 |
| 7 | Flexera | 41 |
| 8 | Kw Solar Solutions | 38 |
| 9 | Alutech United | 30 |
| 10 | Cnc Solar | 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
Bars: recorded installs · right column: median $/W that year.
By county
Solar by county in Delaware
| County | Installs | Capacity | Median $/W |
|---|---|---|---|
| New Castle County | 4,557 | 125.8 MW | $4.50/W |
| Sussex County | 2,581 | 66.8 MW | $4.65/W |
| Kent County | 727 | 24.3 MW | $4.71/W |
Counties derived from installation ZIP codes (Census ZCTA crosswalk) — approximate at boundaries. Counties with fewer than 50 recorded installs are shown but not indexed.
Frequently asked questions
How many solar installations are there in Delaware?
PanelCensus records 7,905 solar installations in Delaware, totalling 241.1 MW of capacity — 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 $4.58/W pre-incentive. Year-by-year medians are shown on this page.
Who are the biggest solar installers in Delaware?
Sungevity Development has the most recorded installations in Delaware (126), followed by Clean Energy Usa (103).