Helping climatetech startupsTransformindustry faster
Pike Robotics
Energy & Power
Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces
Tank Utility
Energy & Power
Massachusetts Materials Technologies
Energy & Power
Seamlessly measuring the mechanical properties of pipelines without interruption
KP Labs
Manufacturing & Processing
Modular, biomembrane-based systems for on-site recovery of critical metals from e-waste and industrial residues
Dottir Labs
Food, Water, & Land
Sensor technology that provides real-time, detailed chemical analysis of water
Sealed
Infrastructure & Construction
Sankofa Dynamics
Food, Water, & Land
SomEV
Energy & Power
SomEV — provides a wait-less charging network for light electric vehicles, using swappable batteries paired with a smart battery swap kiosk.
Energy Toolbase
Energy & Power
Energy Toolbase — is an industry leading software platform that provides a cohesive suite of project modeling, energy storage control and asset monitoring products that enable solar and energy storage developers to deploy projects more efficiently.
GreenIRR
Transportation & Logistics
Thiozen
Manufacturing & Processing
Chemical waste-to-hydrogen cycle that removes hydrogen sulfide from gas streams and generates zero-emission hydrogen
eologix sensor technology
Energy & Power
DxLab
Food, Water, & Land
DxLab — consists of engineers, physicists, biologists, and chemists working together to provide rapid and affordable detection of diseases with new diagnostic platforms that can be used where they are needed the most. By providing means for easy and accurate disease detection, they aim to make diagnostic testing available to anyone who wants or needs it.
Autonomous Marine Systems
Food, Water, & Land
Paragon Pure
Food, Water, & Land
Fresh Inset
Food, Water, & Land
Improving fresh produce’s shelf life, appearance, and quality
Reverse Energy Solutions
Transportation & Logistics
Our startup implements innovative mobile solutions for solar panel recycling, drastically reducing logistic costs by 90% through streamlined collection and transportation processes.
Biobot Analytics
Food, Water, & Land
Wootz
Manufacturing & Processing
Carbon nanotube supermaterials to replace or augment traditional metallic conductors
Metalex Commodities
Manufacturing & Processing
Metalex delivers carbon neutral critical metals needed for the green energy transition.
Pike Robotics
Energy & Power
Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces
Tank Utility
Energy & Power
Massachusetts Materials Technologies
Energy & Power
Seamlessly measuring the mechanical properties of pipelines without interruption
KP Labs
Manufacturing & Processing
Modular, biomembrane-based systems for on-site recovery of critical metals from e-waste and industrial residues
Dottir Labs
Food, Water, & Land
Sensor technology that provides real-time, detailed chemical analysis of water
Sealed
Infrastructure & Construction
Sankofa Dynamics
Food, Water, & Land
SomEV
Energy & Power
SomEV — provides a wait-less charging network for light electric vehicles, using swappable batteries paired with a smart battery swap kiosk.
Energy Toolbase
Energy & Power
Energy Toolbase — is an industry leading software platform that provides a cohesive suite of project modeling, energy storage control and asset monitoring products that enable solar and energy storage developers to deploy projects more efficiently.
GreenIRR
Transportation & Logistics
Thiozen
Manufacturing & Processing
Chemical waste-to-hydrogen cycle that removes hydrogen sulfide from gas streams and generates zero-emission hydrogen
eologix sensor technology
Energy & Power
DxLab
Food, Water, & Land
DxLab — consists of engineers, physicists, biologists, and chemists working together to provide rapid and affordable detection of diseases with new diagnostic platforms that can be used where they are needed the most. By providing means for easy and accurate disease detection, they aim to make diagnostic testing available to anyone who wants or needs it.
Autonomous Marine Systems
Food, Water, & Land
Paragon Pure
Food, Water, & Land
Fresh Inset
Food, Water, & Land
Improving fresh produce’s shelf life, appearance, and quality
Reverse Energy Solutions
Transportation & Logistics
Our startup implements innovative mobile solutions for solar panel recycling, drastically reducing logistic costs by 90% through streamlined collection and transportation processes.
Biobot Analytics
Food, Water, & Land
Wootz
Manufacturing & Processing
Carbon nanotube supermaterials to replace or augment traditional metallic conductors
Metalex Commodities
Manufacturing & Processing
Metalex delivers carbon neutral critical metals needed for the green energy transition.
Aquasaic
Food, Water, & Land
WhaleSpotter
Transportation & Logistics
Thermal imaging and AI to prevent marine mammal strikes at sea
Altaeros
Energy & Power
Global ROC
Food, Water, & Land
Global ROC — provides an innovative technology solution for cooling tower systems that reduces chemical consumption, saves water, and decreases energy costs.
Catalyxx
Manufacturing & Processing
Catalytic tech to turn bio-ethanol into high-value, carbon-negative chemicals
SteamIQ
Manufacturing & Processing
Revterra
Energy & Power
Kinetic stabilizer for instant grid stabilization for industrial manufacturing, data centers, and rapid EV charging
Decimetrix
Energy & Power
AI platform to help clients measure their carbon footprint
FLITE Material Sciences
Manufacturing & Processing
Allkemie
Manufacturing & Processing
Producing tailored graphene and other nanomaterials at scale
InnoSepra
Energy & Power
Type One Energy
Energy & Power
Prophet AI
Food, Water, & Land
AI-based poultry-health-monitoring system to reduce chicken mortality, save revenue, and avoid carbon emissions
Florrent
Food, Water, & Land
High-energy-density supercapacitors for energy storage, made from domestic biomass waste
Highland Park Technologies
Infrastructure & Construction
Insulated cladding and building envelope retrofits at a fraction of the cost
Wise Energie
Energy & Power
Blending vertical-axis wind, solar PV, and battery storage into a single, silent system generating 24/7 clean power
Cocoa Potash
Food, Water, & Land
Starfield
Food, Water, & Land
Puro Renewables
Manufacturing & Processing
Puro Renewables (Miami Beach, FL) upcycles carbon-negative biowaste for use in reducing the amount of fossil-fuel-based resin and carbon footprint in typical plastic products.
Loop Chemicals
Manufacturing & Processing
Enabling localized production of ammonia at competitive prices and zero carbon footprint.
Aquasaic
Food, Water, & Land
WhaleSpotter
Transportation & Logistics
Thermal imaging and AI to prevent marine mammal strikes at sea
Altaeros
Energy & Power
Global ROC
Food, Water, & Land
Global ROC — provides an innovative technology solution for cooling tower systems that reduces chemical consumption, saves water, and decreases energy costs.
Catalyxx
Manufacturing & Processing
Catalytic tech to turn bio-ethanol into high-value, carbon-negative chemicals
SteamIQ
Manufacturing & Processing
Revterra
Energy & Power
Kinetic stabilizer for instant grid stabilization for industrial manufacturing, data centers, and rapid EV charging
Decimetrix
Energy & Power
AI platform to help clients measure their carbon footprint
FLITE Material Sciences
Manufacturing & Processing
Allkemie
Manufacturing & Processing
Producing tailored graphene and other nanomaterials at scale
InnoSepra
Energy & Power
Type One Energy
Energy & Power
Prophet AI
Food, Water, & Land
AI-based poultry-health-monitoring system to reduce chicken mortality, save revenue, and avoid carbon emissions
Florrent
Food, Water, & Land
High-energy-density supercapacitors for energy storage, made from domestic biomass waste
Highland Park Technologies
Infrastructure & Construction
Insulated cladding and building envelope retrofits at a fraction of the cost
Wise Energie
Energy & Power
Blending vertical-axis wind, solar PV, and battery storage into a single, silent system generating 24/7 clean power
Cocoa Potash
Food, Water, & Land
Starfield
Food, Water, & Land
Puro Renewables
Manufacturing & Processing
Puro Renewables (Miami Beach, FL) upcycles carbon-negative biowaste for use in reducing the amount of fossil-fuel-based resin and carbon footprint in typical plastic products.
Loop Chemicals
Manufacturing & Processing
Enabling localized production of ammonia at competitive prices and zero carbon footprint.
The way the world makes energy, materials, and food is changing — and the next decade will decide whether that change makes life better: more energy with fewer emissions, more industry with cleaner air, more good jobs.
That future comes from entrepreneurs — the heroes who turn ideas into real products, real companies, and the jobs of the future. And the ones who make it are the ones with a community behind them.
For 15 years, Greentown has been that community — leaning in with the space, the people, the funding, and the first customers they need. Get behind the entrepreneurs building our future.
Our Startups Have Raised Over $0B
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Startups Operate
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New Jobs Created by Our Members, and Counting
Startups bring the breakthroughs. Corporate partners bring the scale, infrastructure, expertise, and capital to make them matter.
Ready to take your technology to the next level? Join the world's largest community of climatetech and energy entrepreneurs and fast-track your speed to market.
Become a Partner
Access the most concentrated pipeline of vetted climatetech companies in North America. Partner on pilots, invest, or join as a corporate sponsor.
Get Involved
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Tap into deal flow with the world’s largest community of climate and energy startups.