Best Solar Energy Companies in Massachusetts, United States
The 102 best Solar Energy companies in Massachusetts, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Enel X.
Our analysis of 50 Solar Energy companies
$17.8b in tracked funding; 84% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Solar Energy companies in Massachusetts
| # | Company | Disclosed funding | Last round | Employees | Founded | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Enel X Developer of utility-scale renewable energy projects | $168M | 65 mo ago | 513 | 2001 | — | Adobe Experience ManagerJavaGraphQL+25 | — | — |
| 2 | BlueWave Developer of solar and wind energy projects | $64M | 33 mo ago | 58 | 2010 | Sean Finnerty CEO | Craft CMSApple iCloud MailMicrosoft 365+16 | — | — |
| 3 | Colossus Provider of solar panel installation services | $41M | 53 mo ago | 200 | 2016 | — | WordPressApple iCloud MailMySQL+23 | — | — |
| 4 | Ameresco Developer of energy efficiency, storage, and renewable natural gas 69Partners top 18%News top 22%Product top 22%Talent top 25% All 14 signals ▾Partnerstop 18% Newstop 22% Producttop 22% Talenttop 25% Markettop 30% Fundingtop 30% Fin. healthtop 32% Growthtop 38% Techtop 46% Moattop 47% Patentstop 49% Innovationbottom 44% Globalbottom 32% Customersbottom 7% Partners: 5 contract events in 12 mo · Named contractor/client in 5 deals News: 24 BI events in 12 mo (of 222 tracked, 9 types) · +71% YoY rank vs industry peers · Fliar Intelligence Index 69/100 | $40M | 7 mo ago | 1,126 | 2000 | David Anderson Co-Founder and Strategic Advisor | WordPressApple iCloud MailMicrosoft 365+32 | 4 patents Density-gradient separation systems for liquid-phase purification and biotech processing | — |
| 5 | Raptor Maps Provider of solar asset management platform using aerial and sensor data 57AI top 15%Funding top 32%Growth top 32%Talent top 34% All 12 signals ▾AItop 15% Fundingtop 32% Growthtop 32% Talenttop 34% Producttop 40% Moattop 41% Techbottom 49% Marketbottom 41% Globalbottom 39% Innovationbottom 33% Patentsbottom 31% Newsbottom 21% AI: Holds AI/ML patents (G06N-family CPC) Funding: Raised $27.5M across 6 rounds · 6 rounds over 11 yrs (0.5/yr) rank vs industry peers · Fliar Intelligence Index 57/100 | $28M | 18 mo ago | 64 | 2015 | Edward Obropta Co-Founder & CTO | Framer SitesApple iCloud MailGoogle Workspace+14 | 4 patents UAV‑based remote sensing and edge computing for precision agriculture crop monitoring | — |
| 6 | Active Surfaces Developer of ultra-thin, lightweight, flexible, low-cost solar cells. 16Talent top 38%Funding top 43%Moat bottom 38%Global bottom 36% All 6 signals ▾Talenttop 38% Fundingtop 43% Moatbottom 38% Globalbottom 36% Newsbottom 22% Marketbottom 21% Talent: 2 named leaders on record · 2 C-suite/founder profiles curated Funding: Raised $9.7M across 3 rounds · 3 rounds over 3 yrs (1.0/yr) rank vs industry peers · Fliar Intelligence Index 16/100 | $10M | 12 mo ago | 2 | 2022 | Shiv Bhakta Co-Founder | — | — | — |
| 7 | Solstice Community solar provider unlocking clean energy access and savings for all | $7M | 65 mo ago | 55 | 2016 | Sandhya Murali Co-Founder and COO | WordPress Block EditorElementorWordPress+43 | 2 patents Provides medical fiducial markers for image-guided surgery and diagnostics. | 1 expansion |
| 8 | Sungage Financial Provider of solar financing services | $5M | 11 mo ago | 71 71 → 108 (+52%) | 2011 | Sylvain Mansier Co-Founder & President | WebflowApple iCloud MailGoogle Workspace+19 | — | 1 job opening · 1 partnership |
| 9 | Yeloha Solar sharing | $4M | 134 mo ago | 20 | 2012 | — | — | — | — |
| 10 | Reservoir Power Developer of sustainable power grids for high-value power projects 53Talent top 35%Funding top 47%Global bottom 25% All 3 signals ▾Talenttop 35% Fundingtop 47% Globalbottom 25% Talent: 3 named leaders on record Funding: Raised $4.1M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) rank vs industry peers · Fliar Intelligence Index 53/100 | $4M | 5 mo ago | — | 2025 | William Bliss Co-Founder & Chief Development Officer | — | — | — |
| 11 | Mona Lee Provider of solar photovoltaic modules | $3M | 33 mo ago | — | 2022 | Walid Halty Co-Founder & CEO | WordPressMySQLPHP+35 | — | — |
| 12 | Stellaris Solar Module Manufacturing | $3M | 215 mo ago | — | 2005 | Lee Johnson Co-Founder & VP | — | 27 patents Integrated solar panel mounting systems with structural electrical interconnects and ladder inverters | — |
| 13 | Solectria Renewables Leading supplier of innovative commercial PV inverters and energy storage solutions | $2M | 177 mo ago | — | 2005 | James Worden Chief Executive Officer (CEO) | — | — | — |
| 14 | PanelClaw Makes mounting systems for flat roof and ground mount applications. | $2M | 187 mo ago | 33 | 2007 | — | — | 65 patents Photovoltaic module mounting hardware and high‑current conductor management clips. | — |
| 15 | Bright Spot Automation Solar PV testing and automation solutions for enhanced module performance | $2M | 12 mo ago | — | 2014 | Rob Janoch CEO | — | — | 1 launch |
| 16 | Green Ray Solar Provider of micro inverter incorporated PV panels and 3D printing services | $2M | 203 mo ago | 51 | 2006 | Miles C Russell CEO & President | — | — | — |
| 17 | Mass Megawatts Wind Power Green energy solutions provider specializing in wind and solar power systems | $1M | 64 mo ago | 3 | 1997 | — | — | — | — |
| 18 | Resonant Energy Solar installation company | $520K | 38 mo ago | 26 | 2016 | Ben Underwood Co-CEO & Founder | — | — | 1 job opening · 1 partnership |
| 19 | VesprSolar Provider of solar panel installation services | $505K | 43 mo ago | 10 | 2016 | — | — | — | 1 partnership |
| 20 | Opticomp Networks Developer of high-efficiency foldable and rollable solar modules for space and terrestrial applications | $320K | 132 mo ago | — | 1988 | John Farah Owner | — | — | — |
| 21 | inBalance Developer of solar and wind energy projects | $125K | 60 mo ago | 20 | 2020 | Thomas Marge Co-Founder & CEO | — | — | — |
Top 12 Solar Energy companies in Massachusetts
#1
Public · Framingham, Massachusetts · founded 2000 · 1126 employees$39.9Mraised▾
Developer of energy efficiency, storage, and renewable natural gas
- Oct 2025Grant (prize money)$39.9M
#2
Series A · Cambridge, Massachusetts · founded 2025$4.1Mraised▾
Developer of sustainable power grids for high-value power projects. It has expertise in the origination and development of high-value power projects. It is focused on advancing solutions for a low-carbon power grid.
- Jan 2026Series A$4.1M
#3
Series C · Cambridge, Massachusetts · founded 2015 · 64 employees$27.5Mraised▾
Provider of solar asset management platform using aerial and sensor data. The platform analyzes images to conduct root cause analysis and direct operations and maintenance efforts. The platform digitally reconstructs solar plants in a map-based interface enriched with data. Autonomous drones investigate site conditions and equipment, automating visual investigations. A mobile application allows technicians to access remediation context, even offline.
- Dec 2024Series C$35M
- Apr 2022Series B$22M
- Oct 2020Series A$100K
- Aug 2020Series A$5M
#4
Seed · Cambridge, Massachusetts · founded 2022 · 2 employees$9.7Mraised▾
Developer of ultra-thin, lightweight, flexible, low-cost solar cells. The company focuses on enabling any surface to generate solar energy. It utilizes novel manufacturing techniques and commodity materials to build solar cells for both established and emerging markets. The company aims to provide solutions for integrating solar technology into various applications, including roofing, canopies, vehicles, and electronics.
- May 2025Seed$1.3M
- May 2024Seed$5.6M
- Sep 2023Seed$3.6M
#5
Series A · Boston, Massachusetts · founded 2011 · 71 employees$5.5Mraised▾
Provider of solar financing services
- Jun 2025Series A$7.2M
- Oct 2024Conventional Debt$5M
- May 2024Conventional Debt$29.2M
- Feb 2024Grant (prize money)$6.6M
#6
Funding Raised · Westford, Massachusetts · founded 2014$2.1Mraised▾
Solar PV testing and automation solutions for enhanced module performance. The company provides specialized manufacturing and measurement tools for the solar energy industry and photovoltaic researchers. They focus on improving module durability and performance through precision inspection and analysis. Their offerings span the complete PV value chain, from R&D to manufacturing to field testing, including electroluminescence, photoluminescence, and ultraviolet fluorescence imaging systems. They offer software solutions for system control, image capture, analysis, and reporting. They serve the entire Perovskite PV value chain with metrology tools implemented from R&D to product development to manufacturing to field testing. They provide customized solutions and support, tailoring hardware and software to fit customer needs. Their expertise includes defect imaging, durability testing, and failure analysis, contributing to the science of solar durability through research and innovation.
- May 2025Grant (prize money)$1.3M
- Jul 2017Grant (prize money)$600K
- Feb 2017Grant (prize money)$150K
#7
Acquired · Boston, Massachusetts · founded 2010 · 58 employees$64Mraised▾
Developer of solar and wind energy projects
- Sep 2023Conventional Debt$64M
#8
Acquired · Boston, Massachusetts · founded 2001 · 513 employees$168Mraised▾
Developer of utility-scale renewable energy projects
- Jan 2021Grant (prize money)$279K
- Sep 2020Grant (prize money)—
- Feb 2020Grant (prize money)$1M
- Jun 2019Grant (prize money)$418.7K
#9
Series A · Revere, Massachusetts · founded 2016 · 200 employees$41Mraised▾
Developer of enterprise software and marketplace intended to manage the solar business. The company's platform helps businesses to leverage proprietary data and technology to integrate, optimize and digitize their workflows and generate leads among others, enabling solar providers to reach more customers and increase revenue.
- Jan 2022Series A$36M
- 2020Seed$5M
#10
Seed · Boston, Massachusetts · founded 2022$3.2Mraised▾
Provider of solar photovoltaic modules
#11
Acquired · Boston, Massachusetts · founded 2016 · 55 employees$7.4Mraised▾
Community solar provider unlocking clean energy access and savings for all. This organization focuses on expanding access to solar energy through community solar gardens, enabling individuals and businesses to benefit from solar power without needing to install panels on their property. They connect subscribers to local solar projects, providing credits on their electricity bills based on the solar garden's production. This model promotes affordable, accessible, and responsible energy consumption, supporting a cleaner and more equitable energy grid. They offer a platform for individuals, households, developers, and businesses to participate in the clean energy transition, fostering a community-driven approach to sustainability. The organization emphasizes ease of enrollment, cost savings, and environmental impact, making solar energy accessible to a broader audience. They provide customer support, educational resources, and partnership opportunities to further their mission of equitable access to clean energy.
- Jan 2021Seed$3.1M
- Oct 2020Seed$100K
- Aug 2020Conventional Debt$3.1M
- May 2020Conventional Debt$967.5K
#12
Funding Raised · Boston, Massachusetts · founded 2016 · 26 employees$520.3Kraised▾
Solar installation company
- Apr 2023Conventional Debt$75K
- Jun 2021Conventional Debt$445.3K
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Solar Energy coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Solar Pv in Massachusetts is moving
A read on the academic research around Solar Pv in Massachusetts — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 134 papers.
MIT and UMass institutions lead Massachusetts solar-PV research, optimistically advancing perovskite materials and quantum dots with breakthroughs outpacing concerns roughly three-to-one.
- Massachusetts Institute of Technology99
- University of Massachusetts Amherst24
- University of Massachusetts Lowell7
- Massachusetts Audubon Society1
- Emmanuel College - Massachusetts1
- Solar cell3→9
- Photovoltaic system5→10
- Solar energy3→5
- Perovskite (structure)3→4
- Photovoltaic system2→5
- Renewable energy1→4
- Perovskite (structure)1→3
- Perovskite (structure)2→4
- Solar cell2→3
- Solar energy2→3
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.