Solar installations in Connecticut

54,917 recorded installations — prices, growth by year, county breakdown and the installers doing the work.

Dataset updated July 2026 . Refreshed from LBNL's Tracking the Sun public releases.

Installations

54,917

Total capacity

914.4 MW

Median price

$3.78/W

pre-incentive

Third-party owned

61%

lease / PPA

Most active

Top installers in Connecticut

#	Installer	Installs in CT
1	Trinity Solar	12,474
2	Tesla Energy	7,094
3	Sunrun	5,831
4	Posigen	3,659
5	Sunpower Capital	2,841
6	Momentum Solar	1,712
7	Ross Solar Group	1,393
8	Ctec Solar	1,274
9	Sunlight Solar Energy	1,181
10	Rgs Energy	1,151
11	Roof Diagnostics Solar	1,005
12	Earthlight Technologies	1,004
13	Aegis Electrical Systems	823
14	Sungevity Development	815
15	Direct Energy Solar Formerly Astrum	671

Connecticut installer directory →

Growth

Installations by year

2005

33$8.05/W

2006

103$8.42/W

2007

187$8.85/W

2008

334$8.40/W

2009

524$8.00/W

2010

527$7.27/W

2011

435$6.23/W

2012

355$5.06/W

2013

1,074$4.46/W

2014

1,513$4.18/W

2015

8,305$4.42/W

2016

7,368$3.80/W

2017

4,456$3.37/W

2018

5,770$3.57/W

2019

7,523$3.57/W

2020

6,699$3.57/W

2021

4,738$3.60/W

2022

1,493$3.86/W

2023

3,219$1.52/W

2024

3$3.15/W

Bars: recorded installs · right column: median $/W that year.

By county

Solar by county in Connecticut

County	Installs	Capacity	Median $/W
New Haven County	13,225	124.4 MW	$3.75/W
Hartford County	11,938	130.7 MW	$3.72/W
Fairfield County	9,040	96.3 MW	$3.96/W
New London County	4,173	39.3 MW	$3.83/W
Middlesex County	3,102	31.8 MW	$3.75/W
Litchfield County	2,801	29.6 MW	$3.99/W
Tolland County	2,338	25.8 MW	$3.76/W
Windham County	2,183	21.2 MW	$3.72/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 Connecticut?

LBNL's Tracking the Sun dataset records 54,917 residential and small-commercial solar installations in Connecticut, totalling 914.4 MW of capacity. (Coverage depends on the state's reporting programs, so actual totals are higher.)

How much does solar cost per watt in Connecticut?

The median installed price across priced systems in Connecticut is $3.78/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 (12,474), followed by Tesla Energy (7,094).