Helping climatetech startupsTransformindustry faster

Radical Plastics
Manufacturing & Processing
Radical Plastics — is commercializing a patented technology for producing economical, biodegradable plastics that are a drop-in replacement for conventional, persistent plastics.

Anzu Partners
Manufacturing & Processing

Oxylus Energy
Transportation & Logistics

Full Cycle Bioplastics
Manufacturing & Processing

Infinite Cooling
Infrastructure & Construction
Infinite Cooling — reduces water consumption in industrial plants by capturing cooling tower plumes. The company has a patent-pending technology developed at MIT that uses electric fields to capture water from the plumes leaving cooling towers.

GreenIRR
Transportation & Logistics

Osmoses
Manufacturing & Processing
Osmoses — develops advanced membrane technology for efficient gas and vapor separations.

InventWood
Infrastructure & Construction
InventWood — offers MettleWood, a super-strong wood material (that's stronger than steel), a highly insulative wood material (as a green substitute for polystyrene) and even a transparent wood material.

Blue Atlas Robotics
Manufacturing & Processing

JURA Bio
Food, Water, & Land

Alloy Enterprises
Manufacturing & Processing
Alloy Enterprises — is developing a new manufacturing method to change the way the world makes aluminum parts.

R3 Energy
Energy & Power

AIRCO
Energy & Power

Altitude
Altitude (subsidiary of Accenture) — is a privately held product design and innovation firm based in Boston that uses its expertise in consumer insight, design and product engineering to help companies innovate and develop new physical products and services.

GreenLabs Recycling
Manufacturing & Processing

Clean Crop Technologies
Food, Water, & Land
Improving food safety and reducing food waste by removing contaminants with food-grade gasses and electricity

Energetic Insurance
Energy & Power
Unlocking solar financing for unrated or below investment grade organizations.

ALP Technologies
Energy & Power

Medley Thermal
Energy & Power
Medley Thermal — links clean, cheap power to steam heating systems, lowering a customer's energy costs and carbon emissions.

Liquid-Charge
Energy & Power
Liquid-Charge — will manufacture mobile Solid Oxide Fuel Cell (SOFC) range extenders for battery electric vehicles, using them to trickle-charge batteries while effortlessly retaining CO2 for sequestration and recycling.

Radical Plastics
Manufacturing & Processing
Radical Plastics — is commercializing a patented technology for producing economical, biodegradable plastics that are a drop-in replacement for conventional, persistent plastics.

Anzu Partners
Manufacturing & Processing

Oxylus Energy
Transportation & Logistics

Full Cycle Bioplastics
Manufacturing & Processing

Infinite Cooling
Infrastructure & Construction
Infinite Cooling — reduces water consumption in industrial plants by capturing cooling tower plumes. The company has a patent-pending technology developed at MIT that uses electric fields to capture water from the plumes leaving cooling towers.

GreenIRR
Transportation & Logistics

Osmoses
Manufacturing & Processing
Osmoses — develops advanced membrane technology for efficient gas and vapor separations.

InventWood
Infrastructure & Construction
InventWood — offers MettleWood, a super-strong wood material (that's stronger than steel), a highly insulative wood material (as a green substitute for polystyrene) and even a transparent wood material.

Blue Atlas Robotics
Manufacturing & Processing

JURA Bio
Food, Water, & Land

Alloy Enterprises
Manufacturing & Processing
Alloy Enterprises — is developing a new manufacturing method to change the way the world makes aluminum parts.

R3 Energy
Energy & Power

AIRCO
Energy & Power

Altitude
Altitude (subsidiary of Accenture) — is a privately held product design and innovation firm based in Boston that uses its expertise in consumer insight, design and product engineering to help companies innovate and develop new physical products and services.

GreenLabs Recycling
Manufacturing & Processing

Clean Crop Technologies
Food, Water, & Land
Improving food safety and reducing food waste by removing contaminants with food-grade gasses and electricity

Energetic Insurance
Energy & Power
Unlocking solar financing for unrated or below investment grade organizations.

ALP Technologies
Energy & Power

Medley Thermal
Energy & Power
Medley Thermal — links clean, cheap power to steam heating systems, lowering a customer's energy costs and carbon emissions.

Liquid-Charge
Energy & Power
Liquid-Charge — will manufacture mobile Solid Oxide Fuel Cell (SOFC) range extenders for battery electric vehicles, using them to trickle-charge batteries while effortlessly retaining CO2 for sequestration and recycling.

Metalmark Innovations
Transportation & Logistics

Maxwellian
Energy & Power
Maxwellian — empowers mobility, energy, and agricultural industries by providing autonomous sanitization and monitoring solutions using unique optical IoT technology to ensure data accessibility for safety and asset management.

Arbor Energy Holdings Inc
Energy & Power
Digital-energy platform to help homeowners live more sustainably

Patch
Transportation & Logistics

Starfield
Food, Water, & Land

Eos Loan
Energy & Power

Moonflower Farms
Food, Water, & Land
Moonflower Technologies uses space age technology to solve real world problems.

WeaveGrid
Energy & Power
WeaveGrid — is a software company that enables wide scale electric vehicle adoption by solving one of the most critical emerging electrification challenges — connecting a growing wave of electric vehicles to an electric grid that was not designed to support the high power needs of widespread charging.

Applied Bioplastics
Food, Water, & Land
Applied Bioplastics — is commercializing plant-based polymers that are far healthier and more sustainable, at competitive pricing to their petrochemical-based analogues

Heliotrope Photonics
Energy & Power
Coating technology that enhances solar-panel performance by transforming wasted sunlight

Searover Robotics and Software
Manufacturing & Processing

Exakom
Manufacturing & Processing
Exakom — is a pioneer in developing innovative data analysis products for the industrial automation market.

Hempitecture
Manufacturing & Processing
Hempitecture (Ketchum, ID) is a manufacturer and distributor of biobased building materials, including their low embodied carbon insulation, HempWool®.

Ebb Carbon
Food, Water, & Land
Ebb Carbon — removes atmospheric CO2 and reduces ocean acidification. Using a proprietary electrochemical system to separate acid out of salty water, Ebb de-acidifies the ocean and enhances its natural ability to capture CO2 from the air and store it safely and stably as bicarbonate for at least 10,000 years.

Folia Materials
Manufacturing & Processing
Folia Materials — is creating a safer, cleaner, and healthier world with its antiviral paper.

Earthbond
Energy & Power
Earthbond — is a platform that connects urban Nigerians with affordable financing for clean, reliable energy. They leverage group financing and carbon accounting to lower costs and risk in the energy transition of Nigeria’s $14B fuel-based, off-grid generator market.

Sensai Analytics
Energy & Power
Sensai Analytics — is developing an enterprise AI platform that enables companies with limited machine learning expertise to build scalable and robust time series forecasting models.

AquaNRG
Energy & Power
AquaNRG is provider of advanced technologies for subsurface energy and environmental applications. AquaNRG's technology has been funded through $1.4M grants by the US Department of Energy and National Science Foundation.

Independence Coffee Company
Food, Water, & Land
Our new 100% Compostable Coffee Pods are made with no plastic. They are Fair Trade, Organic and are produced from the best coffee growing regions in the world. Our focus on reduced environmental impacts and 'give-backs' to great local and national causes runs in our DNA. We partner with large corporate, grocery and food service providers to not only distribute our products, but also educate consumers on the importance of sustainable cpg packaging for our earth's future.

Pressure Core
Manufacturing & Processing
Pressure Core — is a development company focused on transforming industrial waste pressure into emission-free power. The company simplifies project development for host facilities by offering to buy their waste stream instead of selling them a project.

Metalmark Innovations
Transportation & Logistics

Maxwellian
Energy & Power
Maxwellian — empowers mobility, energy, and agricultural industries by providing autonomous sanitization and monitoring solutions using unique optical IoT technology to ensure data accessibility for safety and asset management.

Arbor Energy Holdings Inc
Energy & Power
Digital-energy platform to help homeowners live more sustainably

Patch
Transportation & Logistics

Starfield
Food, Water, & Land

Eos Loan
Energy & Power

Moonflower Farms
Food, Water, & Land
Moonflower Technologies uses space age technology to solve real world problems.

WeaveGrid
Energy & Power
WeaveGrid — is a software company that enables wide scale electric vehicle adoption by solving one of the most critical emerging electrification challenges — connecting a growing wave of electric vehicles to an electric grid that was not designed to support the high power needs of widespread charging.

Applied Bioplastics
Food, Water, & Land
Applied Bioplastics — is commercializing plant-based polymers that are far healthier and more sustainable, at competitive pricing to their petrochemical-based analogues

Heliotrope Photonics
Energy & Power
Coating technology that enhances solar-panel performance by transforming wasted sunlight

Searover Robotics and Software
Manufacturing & Processing

Exakom
Manufacturing & Processing
Exakom — is a pioneer in developing innovative data analysis products for the industrial automation market.

Hempitecture
Manufacturing & Processing
Hempitecture (Ketchum, ID) is a manufacturer and distributor of biobased building materials, including their low embodied carbon insulation, HempWool®.

Ebb Carbon
Food, Water, & Land
Ebb Carbon — removes atmospheric CO2 and reduces ocean acidification. Using a proprietary electrochemical system to separate acid out of salty water, Ebb de-acidifies the ocean and enhances its natural ability to capture CO2 from the air and store it safely and stably as bicarbonate for at least 10,000 years.

Folia Materials
Manufacturing & Processing
Folia Materials — is creating a safer, cleaner, and healthier world with its antiviral paper.

Earthbond
Energy & Power
Earthbond — is a platform that connects urban Nigerians with affordable financing for clean, reliable energy. They leverage group financing and carbon accounting to lower costs and risk in the energy transition of Nigeria’s $14B fuel-based, off-grid generator market.

Sensai Analytics
Energy & Power
Sensai Analytics — is developing an enterprise AI platform that enables companies with limited machine learning expertise to build scalable and robust time series forecasting models.

AquaNRG
Energy & Power
AquaNRG is provider of advanced technologies for subsurface energy and environmental applications. AquaNRG's technology has been funded through $1.4M grants by the US Department of Energy and National Science Foundation.

Independence Coffee Company
Food, Water, & Land
Our new 100% Compostable Coffee Pods are made with no plastic. They are Fair Trade, Organic and are produced from the best coffee growing regions in the world. Our focus on reduced environmental impacts and 'give-backs' to great local and national causes runs in our DNA. We partner with large corporate, grocery and food service providers to not only distribute our products, but also educate consumers on the importance of sustainable cpg packaging for our earth's future.

Pressure Core
Manufacturing & Processing
Pressure Core — is a development company focused on transforming industrial waste pressure into emission-free power. The company simplifies project development for host facilities by offering to buy their waste stream instead of selling them a project.




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
All-time
0
Currently home to
0
0+
Countries Where
Startups Operate
0
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
We pride ourselves on being a convener of the climatetech ecosystem. Join us at an upcoming event to explore all things climate action and collaboration.

Explore Investing
Tap into deal flow with the world’s largest community of climate and energy startups.






















