Best Sustainability Tech Companies in Boston, United States
The 169 best Sustainability Tech companies in Boston, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Indigo.
Our analysis of 84 Sustainability Tech companies
$19.4b in tracked funding; 85% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Sustainability Tech companies in Boston
| # | Company | Disclosed funding | Last round | Stage | Employees | Founder | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | Indigo 🦄 Provider of biological and sustainability solutions for the agriculture industry | $1.4B | 33 mo ago | Series G | 708 708 → 1,393 (+97%) · sector median +72% | Geoffrey Maltzahn Co-Founder | 355 patents Patents concentrated in health & consumer products | 1 partnership |
| 2 | Nexamp 🦄 Provider of community solar programs and energy solutions for businesses 76Funding top 12%Tech top 23%Moat top 23%Talent top 35% All 8 signals ▾Fundingtop 12% Techtop 23% Moattop 23% Talenttop 35% Markettop 38% Growthtop 43% Globalbottom 39% Newsbottom 38% Funding: Raised $1.3B across 12 rounds · 12 rounds over 16 yrs (0.8/yr) Tech: 42 technologies across 6/8 capability areas · Cloud: Cloudflare rank vs industry peers · Fliar Intelligence Index 76/100 | $1.3B | 1 mo ago | Series E | 331 331 → 589 (+78%) · sector median +72% | Zaid Ashai CEO | — | 1 award |
| 3 | Atea Developer of therapeutics for viral diseases | $293M | 36 mo ago | Public | 58 58 → 58 (+0%) · sector median +72% | Jean Sommadossi Founder & CEO | — | — |
| 4 | binx health Developer of a diagnostic platform for sexually transmitted infections | $284M | 26 mo ago | Series F | 46 46 → 93 (+102%) · sector median +72% | — | — | — |
| 5 | Tomorrow.io 🦄 AI-powered weather intelligence platform using satellites for real-time forecasting 89Funding top 16%Customers top 25%AI top 26%Moat top 26% All 11 signals ▾Fundingtop 16% Customerstop 25% AItop 26% Moattop 26% Producttop 27% Techtop 28% Talenttop 28% Newstop 30% Growthtop 37% Markettop 39% Globaltop 48% Funding: Raised $250M across 4 rounds · 4 rounds over 9 yrs (0.4/yr) Customers: Play-Store rating 4.57★ across 25,899 ratings (2 apps) · Review volume +2% in 6 mo rank vs industry peers · Fliar Intelligence Index 89/100 | $250M | 1 mo ago | Series F | 124 124 → 228 (+84%) · sector median +72% | Hagit Messer Co-Founder | — | 1 award |
| 6 | Enel X Developer of utility-scale renewable energy projects | $168M | 65 mo ago | Acquired | 513 | — | — | — |
| 7 | RVAC Medicines Developer of therapeutics to treat infectious and other diseases | $140M | 49 mo ago | Deadpooled | 56 | — | 6 patents mRNA production, formulation, and delivery technologies for therapeutic nucleic acids | — |
| 8 | Acetylon Global biopharmaceutical company discovering, developing, and delivering innovative medicines | $138M | 154 mo ago | Acqui-Hired | 37 | Marc Cohen Co-Founder | — | — |
| 9 | Bevi Provider of smart water dispenser system provider | $136M | 46 mo ago | Series D | 102 | Sean Grundy Co-Founder & CEO | 3 patents Sealed flexible beverage pouch technology and automated manufacturing equipment | 1 job opening |
| 10 | HilleVax Developer of a vaccine for norovirus infection | $135M | 57 mo ago | Public | 62 | — | — | — |
| 11 | Paratek Pharma Developer of therapeutics for antimicrobial resistant infections | $96M | 56 mo ago | Acquired | 205 205 → 446 (+118%) · sector median +72% | — | — | 2 awards |
| 12 | Lucidity Lights Contract based manufacturer of lights | $95M | 53 mo ago | Series D | 31 | John Goscha Founder | 68 patents Advanced circadian lighting and RF induction lamp technologies for energy-efficient illumination | — |
| 13 | Allonnia Provider of solutions for upcycling plastic waste 37Funding top 24%Moat top 37%Patents top 41%Innovation top 47% All 8 signals ▾Fundingtop 24% Moattop 37% Patentstop 41% Innovationtop 47% Talentbottom 49% Newsbottom 44% Globalbottom 39% Marketbottom 34% Funding: Raised $90.0M across 5 rounds · 5 rounds over 6 yrs (0.8/yr) Moat: Editorial + unicorn rating 6/10 · IP moat: 13 patents rank vs industry peers · Fliar Intelligence Index 37/100 | $90M | 6 mo ago | Series A | 16 | Nicole Richards CEO | 13 patents Bio-solvent ore leaching and PFAS-binding protein technologies for selective impurity removal. | — |
| 14 | General Compression Premier online platform for sports betting, live casino, and slots | $84M | 162 mo ago | Deadpooled | 17 | — | 11 patents Advanced hydraulic‑actuated gas compressors/expanders with enhanced heat‑transfer and energy‑storage efficiency. | — |
| 15 | Daktari Diagnostics Point of care diagnostic platform and data management system | $73M | 109 mo ago | Series D | 23 | — | 44 patents Microfluidic particle counting and fluid delivery systems for diagnostic analyte detection. | — |
| 16 | Voltus Provider of demand response solutions for industrial and commercial applications | $66M | 61 mo ago | Series C | 172 172 → 286 (+66%) · sector median +72% | Dana Guernsey Co-Founder & CEO | — | 1 partnership |
| 17 | Digital Lumens Intelligent LED based lighting solutions | $61M | 139 mo ago | Acquired | 50 50 → 42 (-16%) · sector median +72% | — | 154 patents Smart lighting control systems integrated with optimized mesh network routing for IoT applications | 1 launch · 1 partnership |
| 18 | Renovia Developer of e-stimulation device and tools for the strengthening of pelvic floor muscles | $57M | 62 mo ago | Series C | 19 | Eileen Maus CEO | 59 patents Patents concentrated in health & consumer products | — |
| 19 | Day Zero Diagnostics Developer of genome sequencing-based diagnostics for infectious diseases | $49M | 33 mo ago | Series B | 52 | Jong Lee CEO & Cofounder | — | — |
| 20 | enVerid Provider of energy-saving HVAC solutions for heating, ventilating, and air conditioning systems | $49M | 37 mo ago | Series B | 31 | Christian Weeks Chief Executive Officer | — | — |
| 21 | Arietis Developing novel antibiotics to combat drug-resistant bacterial pathogens and infections | $41M | 14 mo ago | Funding Raised | 5 | Kim Lewis Founder | 2 patents Antimicrobial agents targeting dormant/non-replicating bacterial infections | — |
| 22 | Cambrian Innovation Bio-electro-chemical wastewater treatment systems developer | $37M | 12 mo ago | Series C | 23 | Matthew Silver Co-Founder & CEO | 70 patents Anaerobic wastewater treatment and bioelectrochemical conversion to renewable natural gas | 1 partnership |
| 23 | Perch Energy Provider of community solar subscriptions that offer savings on electricity bills | $36M | 32 mo ago | Series B | 67 | — | — | — |
| 24 | Good Start Genetics Genetic testing company improving health and lives through accessible genetic information | $32M | 157 mo ago | Acquired | 128 | — | 154 patents Patents concentrated in chemistry & materials | — |
| 25 | Fastr AI-enhanced digital experience composition platform built for ecommerce leaders, empowering them to optimize… | $31M | 70 mo ago | Series C | — | Luhui Yan Founder | — | — |
| 26 | Preservation of Affordable Housing Non-profit organisation developing affordable homes | $31M | 15 mo ago | Funding Raised | 505 | Aaron Gornstein President and CEO | — | 1 job opening · 1 expansion · 1 award |
| 27 | WindESCo Provider of IoT-enabled sensor solutions for wind turbines | $26M | 34 mo ago | Series B | 17 17 → 10 (-41%) · sector median +72% | — | 24 patents Coordinated yaw control systems for wind farm performance optimization | — |
| 28 | REsurety Provider of risk management solutions to improve the profitability of wind power | $19M | 20 mo ago | Series C | 58 58 → 76 (+31%) · sector median +72% | — | 2 patents Calculating locational marginal emissions for electricity grid market analytics | — |
| 29 | Aldatu Biosciences Innovative PCR diagnostics for infectious diseases, advancing global health emergency response | $18M | 45 mo ago | Funding Raised | 11 | — | — | — |
| 30 | NanoView Biosciences Provider of a nanotechnology based molecular diagnostic platform | $16M | 51 mo ago | Acqui-Hired | 24 | — | — | — |
| 31 | Found Energy Provider of hydrogen storage solution | $15M | 28 mo ago | Seed | 9 | — | 162 patents Patents concentrated in transport & manufacturing processes | — |
| 32 | SunDensity Provider of nanotech-enabled PV coatings | $14M | 55 mo ago | Series A | 11 | Nishikant Sonwalkar Founder & President | 18 patents Patents concentrated in electrical & electronics | — |
| 33 | CO2 AI AI-based platform to offset the carbon footprint | $12M | 33 mo ago | Series A | — | Florian Jourda Co-founder • CTO | 16 patents Patents concentrated in transport & manufacturing processes | 1 job opening · 2 partnerships |
| 34 | Breaking Developer of microbe-based solutions to plastic degradation and sustainable alternatives | $10M | 26 mo ago | Seed | — | Ben Lamm Co-Founder | — | 1 job opening |
| 35 | Tetra Provider of air conditioning, boiler & furnace replacement and HVAC installation services | $10M | 30 mo ago | Seed | 23 | Max Veggeberg CEO | 56 patents Pet nutrition formulations, agricultural biotech (soil/fungal treatments), and behavior‑monitoring platforms | — |
| 36 | FLUID Provider of microfluidic technology for microbial profiling and diagnostics | $10M | 58 mo ago | Series A | 5 | Monika Weber Founder & CEO | — | — |
| 37 | Luminous Robotics Developer of automated solar panel installation equipment | $8M | 10 mo ago | Series A | — | Jay Wong Founder & CEO | — | — |
| 38 | Pascal Manufacturer of solid refrigerants for HVAC systems | $8M | 25 mo ago | Seed | 6 | Adam Slavney Co-Founder & CEO | 10 patents Electronic vaporization devices and safety caps for e‑cigarette products | 1 job opening |
| 39 | Altus Thermal Provider of residential water heating and cooling solutions | $7M | 29 mo ago | Series A | 7 | Michael Rigney CEO & Cofounder | 6 patents Smart control algorithms for electric resistance and heat‑pump water heaters and predictive fluid heat transfer. | 1 job opening |
| 40 | PhagePro Developing phage treatments to combat antibiotic resistance and promote health equity | $5M | 18 mo ago | Funding Raised | 5 | Minmin Yen Co-Founder & CEO | — | — |
| 41 | Propexo Ofers a unified API for integration leading property management systems 55Talent top 35%Funding top 45%Global bottom 25% All 3 signals ▾Talenttop 35% Fundingtop 45% Globalbottom 25% Talent: 3 named leaders on record Funding: Raised $5.0M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) rank vs industry peers · Fliar Intelligence Index 55/100 | $5M | 9 mo ago | Series A | — | Remen Okoruwa Co-Founder & CEO | — | 1 launch |
| 42 | Oxbridge Clinical Home | Oxbridge Clinical | $4M | 8 mo ago | Series A | — | Cristiano Peron Co-Founder and Chief Medical Officer | 4 patents Rapid detection and quantification of microorganisms using biosensor-based diagnostic devices | 1 job opening |
| 43 | Embue Provider of a cloud-based platform for building maintenance management | $4M | 43 mo ago | Seed | 18 | — | — | — |
| 44 | InnoTech Precision Medicine Developer of multimodal molecular diagnostic platform for early disease detection | $3M | 10 mo ago | Funding Raised | 5 | Reza Mollaaghababa Co-Founder | — | 1 internship · 1 launch |
| 45 | New Ecology Developer of affordable houses | $2M | 15 mo ago | Funding Raised | 50 | — | — | — |
| 46 | Grain Provider of solutions for waste management, biochar production, and carbon removal | $2M | 14 mo ago | Seed | 10 | Ryan Letourneau CEO & Co-Founder | — | — |
| 47 | Voda AI-enabled software solution for pipe breakage prediction | $1M | 12 mo ago | Series A | 25 | Jim Fitchett Chief Operating Officer & Co-Founder | 9 patents Patents concentrated in computing, sensing & instrumentation | 2 launchs |
| 48 | Northwind Climate Provider of business intelligence for the climate economy | $1M | 14 mo ago | Seed | — | Doug Rubin Founder & CEO | — | — |
| 49 | Propedix Developer of therapeutics for fungal diseases | $800K | 19 mo ago | Seed | — | Carl Schanbacher Founder | — | — |
| 50 | Quarksen Developer of a sensing device for diagnosing multiple diseases | $275K | 23 mo ago | Funding Raised | — | Zohreh Izadifar Co-Founder | — | — |
Top 12 Sustainability Tech companies in Boston
#1
Nexamp 🦄Series E · Boston, Massachusetts · founded 2007 · 331 employees$1.3Braised▾
Provider of community solar programs and energy solutions for businesses. It offers community solar subscriptions, enabling savings on electricity costs without rooftop panels. It delivers energy storage solutions and power purchase agreements for commercial users. It also offers community solar programs with no rooftop panels, sign-up fees, or long-term contracts, enabling savings on electricity costs. It focuses on clean energy asset development, customer acquisition, and management, minimizing risk for counterparties.
- Apr 2026Conventional Debt$200M
- Feb 2026Series E$180M
- Mar 2024Series E$520M
- Jun 2023Conventional Debt—
#2
Series F · Boston, Massachusetts · founded 2016 · 124 employees$250Mraised▾
AI-powered weather intelligence platform using satellites for real-time forecasting. It combines satellite data, machine learning, and real-time atmospheric modeling to deliver hyperlocal forecasts and predictive insights. It helps industries like aviation, energy, logistics, and insurance anticipate weather risks and automate operational decisions.
- May 2026Series F$35M
- Feb 2026Series F$175M
- Sep 2023Series E—
- Jun 2023Series E$87M
#3
Series A · Boston, Massachusetts · founded 2019 · 16 employees$90Mraised▾
Provider of solutions for upcycling plastic waste. It uses advanced biology and technology to recycle and convert upcycle waste. It is focused on four key sectors of mining, industry, energy, and plastics, including segments of PFAS separation and concentration, PFAS sensing, rare earth elements - REE, oil sands process water - OSPW, and Plastics.
- Dec 2025Series A$20M
- Jan 2025Series A$650K
- Mar 2023Series A$30M
- May 2021Series A$20M
#4
Series C · Boston, Massachusetts · founded 2006 · 23 employees$37Mraised▾
Bio-electro-chemical wastewater treatment systems developer. The company product suite uses bioelectrochemical systems in which electrically-active microbes oxidize in contact with electrodes & reduce organic fuels and contaminants in the water. The process generates 30-200 kilowatt power and can treat wastewater flows between 10,000 to 300,000 gallons per day. Provides bioelectrochemical nitrate sensor for surface water monitoring denitrification system electricity, hydrogen & methane generation solution for spacecraft. Also offers a financing service called as Water-Energy Purchase Agreement in which the company will construct, install, own, and operate the treatment system and the user needs to pay on a per-gallon basis.
- Jun 2025Conventional Debt$150M
- Nov 2023Series C$200M
- Feb 2022Series B$2.2M
- Oct 2019Series B$18M
#5
Funding Raised · Boston, Massachusetts · founded 2008 · 5 employees$41.4Mraised▾
Developing novel antibiotics to combat drug-resistant bacterial pathogens and infections. This biotech company is focused on creating first-in-class small molecule antibiotics to address the high unmet clinical need in treating infections caused by drug-resistant bacteria. Their innovative approach involves activating the ClpP protease, causing bacterial cells to self-digest, offering a unique mechanism to overcome resistance. This strategy is particularly effective against ESKAPE pathogens and Streptococcus pneumoniae, even targeting non-growing cells and biofilms, which are often resistant to traditional antibiotics. By combining ClpP activators with existing antibiotics, they aim to prevent resistance development and eradicate infections more effectively, potentially revolutionizing the treatment of complicated infections and reducing recurrence. Their research and development efforts are geared towards addressing the critical threat of antimicrobial resistance, especially in Gram-positive pathogens, and providing novel solutions for infections like endocarditis, osteomyelitis, and diabetic ulcers.
- Apr 2025Grant (prize money)$6.4M
- Sep 2023Grant (prize money)$2M
- Mar 2021Grant (prize money)$3M
- Dec 2018Grant (prize money)$6.4M
#6
Indigo 🦄Series G · Boston, Massachusetts · founded 2013 · 708 employees$1.4Braised▾
Provider of biological and sustainability solutions for the agriculture industry. The company offers biological products that harness the plant microbiome to protect crops. It also provides sustainability programs that help scale sustainable practices. These solutions aim to reduce emissions, conserve water, and improve farm profitability.
- Sep 2023Series G$250M
- Jun 2020Series F$360M
- Jan 2020Conventional Debt$25M
- Jan 2020Series F$175M
#7
Funding Raised · Boston, Massachusetts · founded 2001 · 505 employees$30.7Mraised▾
Non-profit organisation developing affordable homes
- Mar 2025Grant (prize money)$150K
- Mar 2025Grant (prize money)$69.5K
- Jan 2025Grant (prize money)—
- Sep 2011Grant (prize money)$30.5M
#8
Series A · Boston, Massachusetts · founded 2023$8.4Mraised▾
Developer of automated solar panel installation equipment. This equipment is designed to integrate seamlessly into existing workflows, minimizing disruption and maximizing efficiency. The focus is on providing technology easily adopted by existing crews, requiring no significant process changes or on-site integration. The equipment automates a key stage of solar construction, improving speed and reducing labor costs.
- Jul 2025Series A$3.5M
- Jul 2025Grant (prize money)$4.9M
#9
Series A · Boston, Massachusetts · founded 2023$4.5Mraised▾
Home | Oxbridge Clinical
- Oct 2025Series A$4.5M
#10
Series F · Boston, Massachusetts · founded 2005 · 46 employees$284.3Mraised▾
Developer of a diagnostic platform for sexually transmitted infections. The platform, io Diagnostic System is a PCR-based, portable, and point-of-care testing platform for sexually transmitted infections (STIs). The company is developing this platform for both clinical and at-home applications. The company also developing other products such as io MSTI Cartridge for detection of Chlamydia trachomatis, Neisseria gonorrhoeae, and Trichomonas vaginalis.
- Apr 2024Series F$65M
- May 2021Series E$104M
- Aug 2017Grant (prize money)$2.6M
- Jan 2017Series D$35M
#11
Series A · Boston, Massachusetts · founded 2022$5Mraised▾
Ofers a unified API for integration leading property management systems. The platform enables users to manage time and revenue. It helps in managing customers through its property managing features.
- Sep 2025Series A$5M
#12
Funding Raised · Boston, Massachusetts · founded 2021 · 5 employees$2.9Mraised▾
Developer of multimodal molecular diagnostic platform for early disease detection. It focuses on creating diagnostic solutions, particularly for cancer, by integrating molecular biology and engineering. The company's platform aims to provide accurate and accessible diagnostics to empower patients and healthcare providers. It develops and commercializes a diagnostic platform that utilizes multimodal detection to identify disease biomarkers. The company collaborates with scientists, engineers, and clinicians to ensure its diagnostic platform meets patient care standards.
- Aug 2025Grant (prize money)$329.7K
- Apr 2025Grant (prize money)$756K
- Jan 2025Grant (prize money)$756K
- Sep 2023Grant (prize money)$329.7K
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Sustainability Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
What Boston researches in climate adaptation
Boston University, UMass Boston, and Boston College lead climate-adaptation research dominated by concern-toned work on policy, agricultural impacts, and governance, with a cautiously optimistic mean stance.
- Boston University19
- University of Massachusetts Boston6
- Boston College2
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.