Solar installations in Connecticut
63,735 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 Connecticut
| # | Installer | Installs in CT |
|---|---|---|
| 1 | Trinity Solar | 12,485 |
| 2 | Tesla | 7,134 |
| 3 | Sunrun | 5,840 |
| 4 | Posigen | 3,716 |
| 5 | Sunpower | 2,846 |
| 6 | Momentum Solar | 1,712 |
| 7 | Ross Solar Group | 1,393 |
| 8 | Ctec Solar | 1,276 |
| 9 | Sunlight Solar Energy | 1,184 |
| 10 | Earthlight Technologies | 1,162 |
| 11 | Rgs Energy | 1,151 |
| 12 | Roof Diagnostics Solar | 1,005 |
| 13 | Aegis Electrical Systems | 823 |
| 14 | Sungevity | 815 |
| 15 | Direct Energy Solar | 669 |
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 Connecticut
| County | Installs | % homes | Capacity | Median $/W |
|---|---|---|---|---|
| New Haven County | 193 | — | 50.4 MW | $2.74/W |
| Fairfield County | 179 | — | 15.8 MW | $2.87/W |
| Hartford County | 70 | — | 172.7 MW | $2.32/W |
| New London County | 27 | — | 81.9 MW | $2.60/W |
| Litchfield County | 19 | — | 28.8 MW | $2.47/W |
| Windham County | 17 | — | 102.8 MW | $2.55/W |
| Middlesex County | 13 | — | 12.3 MW | $3.23/W |
| Tolland County | 13 | — | 21.0 MW | $1.88/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 Connecticut installation — by installer, size, date, storage and equipment.
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Top solar developers in Connecticut
| # | Developer | Systems |
|---|---|---|
| 1 | Verogy | 5 |
| 2 | Greenskies Renewable Energy, LLC | 4 |
Developer/EPC named on the permit or program record — often the same firm as the installer.
Frequently asked questions
How many solar installations are there in Connecticut?
PanelCensus records 63,735 solar installations in Connecticut, totalling 1.8 GW of capacity — about 4.1% of the state's 1,536,049 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 Connecticut?
The median installed price across priced systems in Connecticut is $3.79/W pre-incentive. Year-by-year medians are shown on this page.
Who are the biggest solar installers in Connecticut?
Trinity Solar has the most recorded installations in Connecticut (12,485), followed by Tesla (7,134).