Best Sustainability Tech Companies in Massachusetts, United States
The 500 best Sustainability Tech companies in Massachusetts, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Moderna.
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 Massachusetts
| # | Company | Disclosed funding | Last round | Employees | Founder | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|
| 1 | Moderna Developer of mRNA-based therapeutics for a wide range of diseases 82Tech top 11%Funding top 15%Market top 22%Partners top 25% All 12 signals ▾Techtop 11% Fundingtop 15% Markettop 22% Partnerstop 25% Talenttop 25% Newstop 31% Moattop 32% Patentstop 34% Globaltop 38% Innovationtop 39% Growthbottom 49% Fin. healthbottom 48% Tech: 57 technologies across 6/8 capability areas · Cloud: Amazon Cloudfront, Amazon Ses Funding: Raised $2.8B across 20 rounds · 20 rounds over 14 yrs (1.4/yr) rank vs industry peers · Fliar Intelligence Index 82/100 | $2.8B | 17 mo ago | 1,312 | Robert Langer Co-Founder | 31 patents Patents concentrated in health & consumer products | 1 internship |
| 2 | Indigo 🦄 Provider of biological and sustainability solutions for the agriculture industry | $1.4B | 33 mo ago | 708 708 → 1,393 (+97%) · sector median +70% | Geoffrey Maltzahn Co-Founder | 355 patents Patents concentrated in health & consumer products | 1 partnership |
| 3 | 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 | 331 331 → 589 (+78%) · sector median +70% | Zaid Ashai CEO | — | 1 award |
| 4 | Form Energy Clean energy technology platform developing long-duration iron-air battery systems 83Patents top 11%Funding top 15%Innovation top 16%Moat top 26% All 12 signals ▾Patentstop 11% Fundingtop 15% Innovationtop 16% Moattop 26% Producttop 28% Growthtop 31% Partnerstop 31% Talenttop 34% Newstop 36% Markettop 37% Techtop 44% Globalbottom 44% Patents: 358 patents matched (strict assignee match) · 302 filings since 2022 vs 54 in 2017-21 Funding: Raised $1.1B across 9 rounds · 9 rounds over 8 yrs (1.1/yr) rank vs industry peers · Fliar Intelligence Index 83/100 | $1.1B | 17 mo ago | 372 372 → 850 (+128%) · sector median +70% | Ted Wiley Co-Founder + President & COO | 358 patents Low-cost metal‑air batteries and iron‑based electrochemical production systems | 1 job opening |
| 5 | Ascend Elements 🦄 Manufacturer of engineered materials from recycled lithium-ion batteries and battery scrap 80Funding top 13%Innovation top 21%Patents top 22%News top 24% All 11 signals ▾Fundingtop 13% Innovationtop 21% Patentstop 22% Newstop 24% Moattop 25% Growthtop 27% Talenttop 38% Markettop 42% Techbottom 48% Partnersbottom 43% Globalbottom 42% Funding: Raised $1.0B across 10 rounds · 10 rounds over 4 yrs (2.5/yr) Innovation: 98 patents (top 28% of patent-holders) · 98 filings since 2022 vs 0 in 2017-21 rank vs industry peers · Fliar Intelligence Index 80/100 | $1.0B | 15 mo ago | 87 87 → 148 (+70%) · sector median +70% | Yan Wang Co-Founder | 98 patents Recycling and purification of battery metals and graphite for Li‑ion and NiMH batteries | — |
| 6 | Divert Provider of recyclable waste management services 55Funding top 28%Talent top 38%Tech top 42%Moat top 45% All 10 signals ▾Fundingtop 28% Talenttop 38% Techtop 42% Moattop 45% Markettop 46% Patentstop 50% Growthbottom 47% Globalbottom 42% Innovationbottom 36% Newsbottom 19% Funding: Raised $1.0B across 2 rounds · 2 rounds over 8 yrs (0.2/yr) Talent: 2 named leaders on record · 2 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 55/100 | $1.0B | 4 mo ago | 250 | Ryan Begin Co-Founder & CEO | 39 patents Digital waste tracking and compliance analytics for supply-chain material handling | 1 partnership · 1 expansion |
| 7 | Generate Biomedicines 🦄 Developer of a platform for generating novel protein-based therapeutic modalities 78AI top 18%Funding top 23%News top 24%Innovation top 25% All 12 signals ▾AItop 18% Fundingtop 23% Newstop 24% Innovationtop 25% Growthtop 25% Patentstop 25% Moattop 25% Talenttop 28% Markettop 45% Techbottom 43% Globalbottom 42% Fin. healthbottom 39% AI: Classified as an AI company · Holds AI/ML patents (G06N-family CPC) Funding: Raised $643M across 3 rounds · 3 rounds over 5 yrs (0.6/yr) rank vs industry peers · Fliar Intelligence Index 78/100 | $643M | 17 mo ago | 75 | Gevorg Grigoryan Co-Founder & CTO | 36 patents Patents concentrated in chemistry & materials | — |
| 8 | Gradiant 🦄 Provider of industrial water treatment solutions and technologies 78Patents top 21%Moat top 22%Funding top 26%Innovation top 29% All 11 signals ▾Patentstop 21% Moattop 22% Fundingtop 26% Innovationtop 29% Globaltop 30% Markettop 33% Growthtop 35% Fin. healthtop 37% Techtop 40% Newstop 42% Talentbottom 49% Patents: 256 patents matched (strict assignee match) · 103 filings since 2022 vs 108 in 2017-21 Moat: Editorial + unicorn rating 9/10 · IP moat: 256 patents rank vs industry peers · Fliar Intelligence Index 78/100 | $400M | 1 mo ago | 900 | Anurag Bajpayee Co-Founder & CEO | 256 patents Patents concentrated in transport & manufacturing processes | — |
| 9 | Vedanta Biosciences Developer of therapeutics to treat infectious diseases | $350M | 27 mo ago | 71 71 → 88 (+24%) · sector median +70% | Bernat Olle Chief Executive Officer | 131 patents Microbiome-based therapeutics for infection, dysbiosis, and immune-mediated diseases | — |
| 10 | binx health Developer of a diagnostic platform for sexually transmitted infections | $284M | 26 mo ago | 46 46 → 93 (+102%) · sector median +70% | — | — | — |
| 11 | 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 | 124 124 → 228 (+84%) · sector median +70% | Hagit Messer Co-Founder | — | 1 award |
| 12 | Ambri Manufacturer of liquid metal battery systems for grid energy storage | $219M | 22 mo ago | 141 | David Bradwell Chief Executive Officer | 114 patents Liquid metal battery technology for grid-scale high-temperature energy storage | — |
| 13 | Sense Smart energy platform providing real-time electricity usage insights for homes and utilities 60Patents top 21%Funding top 23%Customers top 26%Moat top 26% All 12 signals ▾Patentstop 21% Fundingtop 23% Customerstop 26% Moattop 26% Innovationtop 27% Producttop 33% Talenttop 33% Techtop 36% Growthtop 37% Globaltop 50% Marketbottom 40% Fin. healthbottom 17% Patents: 114 patents matched (strict assignee match) · 60 filings since 2022 vs 44 in 2017-21 Funding: Raised $195M across 5 rounds · 5 rounds over 11 yrs (0.5/yr) rank vs industry peers · Fliar Intelligence Index 60/100 | $195M | 4 mo ago | 120 120 → 106 (-12%) · sector median +70% | Mike Phillips Co-founder | 114 patents Smart power metering and event analytics for device identification in intelligent grids | 1 award |
| 14 | Microbiotix Biopharmaceutical company combating serious infectious diseases and multi-drug resistant pathogens 32Patents top 20%Funding top 24%Innovation top 28%Moat top 41% All 8 signals ▾Patentstop 20% Fundingtop 24% Innovationtop 28% Moattop 41% Globalbottom 38% Marketbottom 29% Newsbottom 17% Techbottom 16% Patents: 143 patents matched (strict assignee match) · 43 filings since 2022 vs 33 in 2017-21 Funding: Raised $152M across 61 rounds · 61 rounds over 25 yrs (2.4/yr) rank vs industry peers · Fliar Intelligence Index 32/100 | $152M | 13 mo ago | 23 | — | 143 patents Discovery and development of antimicrobial small‑molecule therapeutics (antifungal, antibacterial, antiviral). | — |
| 15 | CubicPV Manufacturer of solar PV modules | $137M | 13 mo ago | 71 | — | 184 patents Perovskite solar cell materials, coatings, and scalable thin‑film manufacturing. | — |
| 16 | Sherlock Provider of a diagnostic platform for DNA and RNA detection 62Growth top 13%Funding top 22%Talent top 28%Moat top 41% All 9 signals ▾Growthtop 13% Fundingtop 22% Talenttop 28% Moattop 41% Patentsbottom 46% Innovationbottom 41% Marketbottom 39% Globalbottom 37% Newsbottom 34% Growth: Headcount 1 → 33 (+3200%) across vintages · Fresh capital in last 24 mo Funding: Raised $111M across 9 rounds · 9 rounds over 7 yrs (1.3/yr) rank vs industry peers · Fliar Intelligence Index 62/100 | $111M | 12 mo ago | 33 | David Walt Co-Founder | 5 patents Remote health monitoring systems that detect critical vitals and trigger emergency interventions | — |
| 17 | ZwitterCo Manufacturer of wastewater treatment systems using membrane technology 60Funding top 24%Product top 30%Innovation top 33%Moat top 37% All 11 signals ▾Fundingtop 24% Producttop 30% Innovationtop 33% Moattop 37% Techtop 38% Talenttop 38% Patentstop 39% Growthtop 40% Globalbottom 39% Marketbottom 38% Newsbottom 21% Funding: Raised $102M across 5 rounds · 5 rounds over 6 yrs (0.8/yr) Product: 8 distinct product lines · Company stage: Series B rank vs industry peers · Fliar Intelligence Index 60/100 | $102M | 23 mo ago | 57 57 → 86 (+51%) · sector median +70% | Christopher Drover Co-Founder & CTO | 14 patents Patents concentrated in chemistry & materials | 1 launch |
| 18 | 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 | 16 | Nicole Richards CEO | 13 patents Bio-solvent ore leaching and PFAS-binding protein technologies for selective impurity removal. | — |
| 19 | Red Queen Therapeutics Developer of therapeutics for virus-borne illnesses | $55M | 22 mo ago | — | Mark Mitchnick CEO | — | — |
| 20 | Oncimmune Immunodiagnostics company developing biomarker platforms for cancer and immune diseases | $49M | 19 mo ago | 62 62 → 35 (-44%) · sector median +70% | Jamie Heywood Managing Director | 4 patents Immunoassay development and calibration technologies for diagnostic testing | — |
| 21 | Arietis Developing novel antibiotics to combat drug-resistant bacterial pathogens and infections | $41M | 14 mo ago | 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 | 23 | Matthew Silver Co-Founder & CEO | 70 patents Anaerobic wastewater treatment and bioelectrochemical conversion to renewable natural gas | 1 partnership |
| 23 | Preservation of Affordable Housing Non-profit organisation developing affordable homes | $31M | 14 mo ago | 505 | Aaron Gornstein President and CEO | — | 1 job opening · 1 expansion · 1 award |
| 24 | 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 | Edward Obropta Co-Founder & CTO | 4 patents UAV‑based remote sensing and edge computing for precision agriculture crop monitoring | — |
| 25 | SYSO Technologies Provider of renewable energy storage and management solutions 35Funding top 36%Talent top 38%Moat top 39%Market bottom 40% All 5 signals ▾Fundingtop 36% Talenttop 38% Moattop 39% Marketbottom 40% Globalbottom 29% Funding: Raised $24.5M across 5 rounds · 5 rounds over 5 yrs (1.0/yr) Talent: 2 named leaders on record · 2 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 35/100 | $24M | 5 mo ago | 22 22 → 44 (+100%) · sector median +70% | Christopher Gosline Co-Founder & CEO | — | — |
| 26 | VIA Developer of Web3 solutions that protect data against theft, misuse | $20M | 16 mo ago | 50 | Colin Gounden Co-Founder & CEO | — | 2 job openings · 1 partnership |
| 27 | REsurety Provider of risk management solutions to improve the profitability of wind power | $19M | 20 mo ago | 58 58 → 76 (+31%) · sector median +70% | — | 2 patents Calculating locational marginal emissions for electricity grid market analytics | — |
| 28 | Lydian Labs Developer of technology to recycle CO2 emissions into carbon-neutral fuels | $18M | 5 mo ago | — | Joe Rodden Co-Founder & CEO | 25 patents Modular electrically heated reactors for endothermic chemical synthesis and catalytic processes. | — |
| 29 | Infinite Cooling Technology developer for capturing water from cooling tower plumes | $16M | 13 mo ago | 13 13 → 16 (+23%) · sector median +70% | Kripa Varanasi Co-Founder | 19 patents Optimizing industrial cooling tower control and gas‑stream condensate/particle collection technologies. | — |
| 30 | SiTration Provider of battery recycling solutions | $14M | 11 mo ago | 5 | Brendan Smith Co-Founder & CEO | 20 patents Metal extraction processes and electrically conductive membrane separation technologies. | — |
| 31 | Granata Bio Developer of therapeutics for women's health and infertility | $14M | 13 mo ago | — | Marc Chung Co-Founder | — | — |
| 32 | CMHA Organization providing homelessness prevention, shelter access, housing stability, and public education… | $13M | 12 mo ago | 12 | Leah Bradley CEO | — | 1 award |
| 33 | Eden GeoPower Geothermal micro energy generation technology developers | $13M | 14 mo ago | 20 | — | 30 patents Electrically enhanced in‑situ mining, fracturing, and hydrogen‑production rock stimulation | — |
| 34 | Phoenix Tailings Online mineral recovery from mining waste platform | $12M | 3 mo ago | 30 | Nicholas Myers Co-Founder & CEO | 51 patents Metal recovery and process control in molten‑salt electrolysis systems | — |
| 35 | AeroShield Provider of insulated window panes 27Funding top 28%Talent top 28%Moat top 39%Tech bottom 44% All 6 signals ▾Fundingtop 28% Talenttop 28% Moattop 39% Techbottom 44% Globalbottom 29% Marketbottom 22% Funding: Raised $12.0M across 9 rounds · 9 rounds over 6 yrs (1.5/yr) Talent: 3 named leaders on record · 3 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 27/100 | $12M | 9 mo ago | 10 | Kyle Wilke Cofounder and CTO | — | — |
| 36 | AutoIVF Developer of solutions to automate and improve In Vitro Fertilization procedures | $12M | 13 mo ago | 4 | Mitchel Sayare Co-Founder & Chairman | 2 patents Patents concentrated in transport & manufacturing processes | — |
| 37 | Vertical Semiconductor Developer of vertical GaN technology for power electronics applications | $11M | 8 mo ago | — | Josh Perozek CTO & Co-Founder | — | 1 expansion · 1 award |
| 38 | Sunwealth Clean energy investment and crowdfunding platform | $10M | 17 mo ago | 34 34 → 28 (-18%) · sector median +70% | Jon Abe CEO & Founder | — | 1 job opening · 1 award |
| 39 | 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 | Shiv Bhakta Co-Founder | — | — |
| 40 | Burlington Housing Authority Provider of affordable housing and community support services for residents | $10M | 14 mo ago | — | Rick Iovine Co-CEO | — | — |
| 41 | MacroCycle Developer of zero-carbon plastic upcycling technology | $10M | 3 mo ago | — | Jan-Georg Rosenboom Co-Founder & CTO | — | 1 internship · 2 awards |
| 42 | HelixBind Innovative diagnostics for faster, accurate bloodstream infection identification and personalized… | $9M | 13 mo ago | 25 | — | 45 patents Microfluidic platforms for rapid, ultrasensitive detection of microbial pathogens. | — |
| 43 | Luminous Robotics Developer of automated solar panel installation equipment | $8M | 10 mo ago | — | Jay Wong Founder & CEO | — | — |
| 44 | Triton Anchor Developer of anchoring solutions for floating offshore wind and marine energy | $8M | 9 mo ago | 6 | Ross Haghighat CEO | — | — |
| 45 | Hunterian Provider of gene-editing platform based on CRISPR delivery technology | $8M | 16 mo ago | 6 | Vinod Ranga Founder & CEO | — | — |
| 46 | Ekotrope Tech-enabled service provider for energy-efficient building, green politics, & construction 32Growth top 35%Product top 36%Talent bottom 49%Tech bottom 48% All 10 signals ▾Growthtop 35% Producttop 36% Talentbottom 49% Techbottom 48% Fundingbottom 47% Innovationbottom 43% Moatbottom 42% Patentsbottom 37% Globalbottom 32% Marketbottom 29% Growth: Fresh capital in last 24 mo Product: 7 distinct product lines · Company stage: Series A rank vs industry peers · Fliar Intelligence Index 32/100 | $6M | 8 mo ago | 17 17 → 36 (+112%) · sector median +70% | Nick Sisler Founder and Director of Engineering | 5 patents Energy management software for green building automation and demand‑side control | 1 job opening · 1 launch |
| 47 | 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 | — | Remen Okoruwa Co-Founder & CEO | — | 1 launch |
| 48 | Oxbridge Clinical Home | Oxbridge Clinical | $4M | 8 mo ago | — | Cristiano Peron Co-Founder and Chief Medical Officer | 4 patents Rapid detection and quantification of microorganisms using biosensor-based diagnostic devices | 1 job opening |
| 49 | Bluejay Diagnostics Non-invasive point-of-care diagnostic solutions | $4M | 8 mo ago | 28 | Svetlana Dey CEO | — | — |
| 50 | InnoTech Precision Medicine Developer of multimodal molecular diagnostic platform for early disease detection | $3M | 10 mo ago | 5 | Reza Mollaaghababa Co-Founder | — | 1 internship · 1 launch |
Top 12 Sustainability Tech companies in Massachusetts
#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
Gradiant 🦄Series E · Woburn, Massachusetts · founded 2013 · 900 employees$400Mraised▾
Provider of industrial water treatment solutions and technologies. It offers end-to-end, turnkey treatment systems engineered to meet specific customer requirements. Services include water reduction, reclamation, and renewal, recovering valuable resources from wastewater. Custom chemical formulations are developed in-house to support these technologies. The company's solutions address various industrial sectors, focusing on minimizing environmental impact and optimizing water usage. Technologies include those for PFAS removal, lithium extraction, and green hydrogen production.
- May 2026Series E—
- Oct 2025Conventional Debt$50M
- May 2023Series D$225M
- Jun 2021Series C$104.8M
#3
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
#4
Series B · Concord, Massachusetts · founded 2005 · 250 employees$1Braised▾
Provider of recyclable waste management services
- Jan 2026Series B—
- Mar 2023Series B$1B
- Jul 2018Series A$3.8M
#5
Series D · Cambridge, Massachusetts · founded 2013 · 120 employees$194.6Mraised▾
Smart energy platform providing real-time electricity usage insights for homes and utilities. It uses smart sensors and data analytics to deliver real-time electricity usage insights for homes, utilities, and energy partners. It helps users understand and reduce energy consumption, improve efficiency, and support grid reliability by providing high-resolution monitoring and behavioral energy insights aimed at lowering carbon emissions and accelerating the energy transition.
- Jan 2026Series D—
- Apr 2022Series C$127.6M
- Sep 2021Series B—
- Aug 2019Series B$29.9M
#6
Public · Cambridge, Massachusetts · founded 2010 · 1312 employees$2.8Braised▾
Developer of mRNA-based therapeutics for a wide range of diseases. The company produces human proteins, antibodies, or vaccines inside patient cells, which are in turn active intracellularly or secreted. The company is also developing vaccines in different disease areas such as infectious diseases, cancer, rare diseases, and COVID-19.
- Jan 2025Grant (prize money)$590M
- Jul 2024Grant (prize money)$176M
- Oct 2020Grant (prize money)$56M
- May 2020Post IPO—
#7
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
#8
Series D · Westborough, Massachusetts · founded 2015 · 87 employees$1Braised▾
Manufacturer of engineered materials from recycled lithium-ion batteries and battery scrap. The company utilizes a direct precursor synthesis process to transform discarded batteries and manufacturing scrap into active cathode battery material. This process recovers critical elements for reuse in lithium-ion battery manufacturing. The company provides logistics, material-tracking, and customer support services.
- Feb 2025Grant (prize money)—
- Feb 2024Series D$162M
- Sep 2023Series D$460.1M
- Sep 2023Grant (prize money)$480.6M
#9
Series F · Somerville, Massachusetts · founded 2009 · 372 employees$1.1Braised▾
Clean energy technology platform developing long-duration iron-air battery systems. It develops advanced battery solutions capable of storing electricity for multiple days, helping balance energy supply and demand during periods of high stress or renewable energy intermittency. It is designed to support the transition to a cleaner and more resilient electric grid by enabling greater integration of renewable energy sources such as wind and solar. Its technology centers on cost-effective, scalable battery systems built for long-duration storage applications, addressing critical gaps in traditional short-duration energy storage solutions.
- Jan 2026Series F—
- Oct 2024Series F$405M
- Aug 2023Grant (prize money)$12M
- Sep 2022Series E$450M
#10
Series B · Cambridge, Massachusetts · founded 2019 · 22 employees$24.5Mraised▾
Provider of renewable energy storage and management solutions. It offers the SYSO Technology Platform - which is used to manage equipment, market data & weather data, and SYSO Technology Server - which provides installation and data security solutions.
- Dec 2025Series B$7M
- Jul 2024Series B$14.5M
- Oct 2022Series A$10M
- Apr 2022Seed$2M
#11
Series B · Woburn, Massachusetts · founded 2019 · 30 employees$12.1Mraised▾
Online mineral recovery from mining waste platform. It has developed technologies to remediate tailings ponds by extracting new ores and basic metals from bauxite residue. It is on a mission for zero waste and zero carbon emission resulting in reducing production costs. It eradicates metals such as alumina, iron, scandium, silica, and more. The offering sectors include cell phones, autos, aircraft, biotechnology, and more.
- Feb 2026Venture Debt$10M
- Feb 2026Series B$30.2M
- May 2025Grant (prize money)$499.9K
- Nov 2024Series B$106.6M
#12
Public · Somerville, Massachusetts · founded 2018 · 75 employees$643Mraised▾
Developer of a platform for generating novel protein-based therapeutic modalities. The platform aims to expand technical possibilities to change how medicines are made. It studies proteins to learn rules by which nature encodes function. The company generates medicines across therapeutic modalities with speed and success.
- Dec 2024Series C—
- Sep 2023Series C$273M
- Nov 2021Series B$370M
- Sep 2020Series A$50M
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 Massachusetts researches in climate adaptation
UMass Amherst, MIT, and UMass Lowell lead Massachusetts climate-adaptation research, focusing on agricultural impacts, governance, and flood risk, with a contested tone (concern-dominant, mean stance 0.16).
- University of Massachusetts Amherst11
- Massachusetts Institute of Technology11
- University of Massachusetts Lowell6
- University of Massachusetts Boston6
- University of Massachusetts Dartmouth2