Solar installers in Massachusetts
449 profiled installers based in Massachusetts, plus the national companies most active in the state — volume, prices and ownership mix from public data.
Dataset updated . Sources: LBNL Tracking the Sun + city permit records + state programs + USGS/EIA utility-scale.
Installers based here
449
Recorded installs
158,257
State capacity
8.4 GW
Median price
$4.16/W
pre-incentive
Any headquarters
Most active in Massachusetts
| # | Installer | Installs in MA |
|---|---|---|
| 1 | Sunrun | 37,161 |
| 2 | Tesla Energy | 23,191 |
| 3 | Trinity Solar | 12,480 |
| 4 | Direct Energy Solar Formerly Astrum | 3,361 |
| 5 | Roof Diagnostics Solar | 3,086 |
| 6 | Boston Solar | 3,016 |
| 7 | Sungevity Development | 2,795 |
| 8 | Sunbug Solar | 2,436 |
| 9 | Next Step Living | 2,360 |
| 10 | Rgs Energy | 2,045 |
| 11 | Revolusun | 1,671 |
| 12 | Freedom Forever | 1,633 |
| 13 | Solarflair Energy | 1,621 |
| 14 | Pv Squared | 1,616 |
| 15 | My Generation Energy | 1,314 |
Based in the state
Installers headquartered in Massachusetts
| Installer | Installs | Capacity | Median $/W | TPO | Active since |
|---|---|---|---|---|---|
| Direct Energy Solar Formerly Astrum | 5,899 | 55.3 MW | $3.89/W | 18% | 2010 |
| Roof Diagnostics Solar | 4,115 | 27.3 MW | $3.55/W | 76% | 2012 |
| Palmetto Solar | 3,351 | 26.0 MW | $4.00/W | 28% | 2017 |
| Boston Solar | 3,046 | 35.0 MW | $3.76/W | 3% | 2012 |
| Next Step Living | 2,475 | 14.1 MW | $6.50/W | 1% | 2012 |
| Sunbug Solar | 2,444 | 32.6 MW | $3.99/W | 2% | 2009 |
| Revolusun | 1,892 | 33.5 MW | $4.18/W | 3% | 2012 |
| Solarflair Energy | 1,644 | 28.0 MW | $3.59/W | 1% | 2008 |
| Pv Squared | 1,628 | 18.7 MW | $4.59/W | 1% | 2003 |
| My Generation Energy | 1,316 | 20.6 MW | $3.68/W | 1% | 2009 |
| New England Clean Energy | 1,290 | 12.0 MW | $4.64/W | 0% | 2007 |
| Northeast Solar Design Associates | 1,243 | 15.3 MW | $3.99/W | 2% | 2004 |
| Endless Mtn Solar Services | 1,004 | 8.5 MW | $5.38/W | 1% | 2009 |
| Isaksen Solar | 947 | 11.0 MW | $3.89/W | 5% | 2017 |
| E2 Solar | 905 | 7.3 MW | $4.85/W | 0% | 2007 |
| Great Sky Solar | 890 | 8.7 MW | $3.12/W | 0% | 2011 |
| Second Generation Energy | 833 | 13.0 MW | $3.55/W | 5% | 2008 |
| Solar Rising | 775 | 7.4 MW | $3.35/W | 2% | 2013 |
| Summit Energy Group | 752 | 10.8 MW | $4.58/W | 23% | 2004 |
| Devlin Contracting Maintenance | 739 | 6.7 MW | $4.37/W | 48% | 2018 |
| Ameresco | 701 | 315.7 MW | $3.43/W | 18% | 2005 |
| Solect Energy | 632 | 113.6 MW | $2.87/W | 27% | 2011 |
| Mass Renewables | 631 | 6.1 MW | $3.84/W | 1% | 2009 |
| Ace Residential Solar | 617 | 11.3 MW | $3.25/W | 1% | 2015 |
| Blue Selenium Solar | 607 | 5.2 MW | $5.19/W | 1% | 2010 |
| Cazeault Solar | 543 | 4.2 MW | $3.98/W | 0% | 2013 |
| Green Earth Energy Photovoltaic | 535 | 26.0 MW | $3.80/W | 5% | 2010 |
| Brightstar Solar | 524 | 5.2 MW | $3.36/W | 0% | 2010 |
| Invaleon Technologies Corporation | 517 | 19.3 MW | $3.20/W | 3% | 2012 |
| South Mountain Company | 500 | 5.7 MW | $4.97/W | 0% | 2007 |
| Nuwatt Energy | 497 | 4.6 MW | $3.22/W | 3% | 2011 |
| Solar Wolf Energy | 482 | 4.0 MW | $4.19/W | 0% | 2016 |
| Nexamp | 444 | 1.3 GW | $2.38/W | 28% | 2008 |
| Solar Five | 431 | 3.5 MW | $4.40/W | 31% | 2015 |
| Kyle Greene | 406 | 3.1 MW | — | 0% | 2016 |
| Stephen Kelly | 382 | 9.2 MW | $1.90/W | 0% | 2015 |
| Solar Store Of Greenfield | 339 | 2.4 MW | $4.16/W | 1% | 2006 |
| Blueset Home Solar | 324 | 2.9 MW | $4.11/W | 1% | 2018 |
| United Solar Associates | 307 | 5.6 MW | $3.99/W | 24% | 2010 |
| Energy Monster | 280 | 2.8 MW | $3.10/W | 1% | 2015 |
| Berkshire Photovoltaic Services Bpvs | 274 | 1.4 MW | $7.06/W | 0% | 2003 |
| Clean Energy Design | 262 | 5.0 MW | $4.25/W | 0% | 2005 |
| Insight Solar | 249 | 2.5 MW | $4.13/W | 19% | 2019 |
| Vantage Solar | 249 | 2.8 MW | $3.04/W | 29% | 2014 |
| Certified Safe Electric | 246 | 2.1 MW | $3.57/W | 7% | 2009 |
| Fullers Energy | 246 | 2.6 MW | $5.65/W | 0% | 2011 |
| Alternate Energy | 239 | 2.1 MW | $3.78/W | 2% | 2004 |
| Sunwind Solutions | 230 | 2.2 MW | $3.46/W | 0% | 2010 |
| NATHAN ASHE | 219 | 6.4 MW | — | 0% | 2017 |
| Ace Solar | 213 | 9.6 MW | $3.22/W | 9% | 2015 |
| Rayah Solar | 210 | 5.9 MW | $3.98/W | 16% | 2013 |
| Southern Light Solar | 200 | 3.3 MW | $3.50/W | 2% | 2013 |
| Bay State Solar | 195 | 2.8 MW | $4.25/W | 42% | 2013 |
| Transformations | 190 | 1.5 MW | $5.57/W | 4% | 2005 |
| Philip Kapitan | 190 | 1.6 MW | $3.60/W | 0% | 2020 |
| Beaumont Solar | 187 | 41.3 MW | $3.55/W | 5% | 2008 |
| Acushnet Alternative Heating | 186 | 2.0 MW | $3.00/W | 0% | 2013 |
| Ino Electrical Service | 182 | 4.2 MW | $3.38/W | 1% | 2010 |
| Sunlight Solar Ca | 182 | 1.0 MW | $4.50/W | 3% | 2004 |
| Plymouth Solar Energy | 178 | 2.1 MW | $4.15/W | 1% | 2011 |
| Rexel Energy Solutions | 176 | 7.6 MW | $4.29/W | 1% | 2011 |
| Crius Solar | 164 | 1.2 MW | $4.20/W | 13% | 2017 |
| Stephen A Kelly | 163 | 1.1 MW | — | 0% | 2022 |
| Independent Power Systems | 158 | 5.5 MW | $5.05/W | 0% | 2011 |
| Corbin Solar Solutions | 152 | 1.4 MW | $4.22/W | 29% | 2010 |
| Endless Energy | 149 | 1.4 MW | $3.46/W | 1% | 2017 |
| Got Sun Go Solar | 146 | 1.3 MW | $4.08/W | 1% | 2010 |
| Harvest Sun Solar | 144 | 1.8 MW | $3.53/W | 0% | 2017 |
| Matthew Markham | 144 | 1.2 MW | — | 0% | 2015 |
| Beacon Solar | 143 | 2.1 MW | $4.20/W | 2% | 2017 |
| Empower Energy Solutions | 139 | 1.2 MW | $5.93/W | 0% | 2021 |
| Reliable Solar Solutions | 139 | 1.3 MW | $3.53/W | 0% | 2015 |
| Romain Strecker | 138 | 4.2 MW | — | 0% | 2012 |
| Gehrlicher Solar America Corporation | 131 | 189.4 MW | $2.64/W | 29% | 2011 |
| Kw Management | 127 | 16.5 MW | $4.74/W | 3% | 2006 |
| Big Sky Renewable Energy | 126 | 1.7 MW | $4.85/W | 0% | 2012 |
| Design With Nature | 126 | 1.7 MW | $3.40/W | 0% | 2013 |
| Grenergy Solar Storellc | 125 | 1.1 MW | $3.87/W | 0% | 2008 |
| James Sherman | 122 | 353 kW | — | 0% | 2013 |
| Dynamic Energy Solutions | 121 | 117.4 MW | $2.32/W | 11% | 2001 |
| Green Seal Environmental | 120 | 8.6 MW | $3.00/W | 3% | 2015 |
| Thomas Young | 120 | 2.0 MW | — | 0% | 2016 |
| New England Solar Green Solutions | 110 | 1.0 MW | $3.75/W | 0% | 2009 |
| Southcoast Greenlight | 110 | 2.5 MW | $3.43/W | 0% | 2008 |
| Bruce Junior | 109 | 750 kW | — | 0% | 2016 |
| Joseph Wyld-Chirico | 109 | 232 kW | — | 0% | 2011 |
| Ack Smart | 105 | 1.1 MW | $4.44/W | 1% | 2014 |
| Smart Green Solar | 101 | 881 kW | $5.77/W | 0% | 2022 |
| Future Energy Solarllc | 99 | 1.1 MW | $2.95/W | 0% | 2016 |
| Cs Energy | 88 | 220.8 MW | $2.00/W | 25% | 2013 |
| Viridis Energy Solutions | 88 | 872 kW | $4.16/W | 20% | 2019 |
| Team Sunshine Construction | 85 | 766 kW | $5.15/W | 13% | 2022 |
| Massamerican Energy | 84 | 14.8 MW | $2.73/W | 32% | 2014 |
| Resolution Solar | 82 | 604 kW | $4.29/W | 95% | 2014 |
| Firstmark Advantage | 81 | 664 kW | $4.90/W | 6% | 2015 |
| W H Bennett | 80 | 3.5 MW | $4.47/W | 1% | 2012 |
| Katherine Dailey | 79 | 444 kW | — | 0% | 2017 |
| Zapotec Energy | 78 | 1.6 MW | $7.81/W | 0% | 2003 |
| Steele Hudson | 78 | 588 kW | — | 0% | 2016 |
| Brightway Energy | 77 | 733 kW | $3.74/W | 0% | 2020 |
"Based in" = the state with the most recorded installs for that installer. Top 100 shown, ordered by volume.
Frequently asked questions
How many solar installers are there in Massachusetts?
PanelCensus profiles 449 installers based in Massachusetts (5+ recorded installs each), resolved from 158,257 recorded installations in the state. Multi-state national installers also operate here — see the "most active" list.
Who is the biggest solar installer in Massachusetts?
Sunrun has the most recorded installations in Massachusetts with 37,161 systems.
See installation-level geography on the Massachusetts solar page.