Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
Radical Plastics logo

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 logo

Anzu Partners

Manufacturing & Processing

Oxylus Energy logo

Oxylus Energy

Transportation & Logistics

Full Cycle Bioplastics logo

Full Cycle Bioplastics

Manufacturing & Processing

Infinite Cooling logo

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 logo

GreenIRR

Transportation & Logistics

Osmoses logo

Osmoses

Manufacturing & Processing

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

InventWood logo

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 logo

Blue Atlas Robotics

Manufacturing & Processing

JURA Bio logo

JURA Bio

Food, Water, & Land

Alloy Enterprises logo

Alloy Enterprises

Manufacturing & Processing

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

R3 Energy logo

R3 Energy

Energy & Power

AIRCO logo

AIRCO

Energy & Power

Altitude logo

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 logo

GreenLabs Recycling

Manufacturing & Processing

Clean Crop Technologies logo

Clean Crop Technologies

Food, Water, & Land

Improving food safety and reducing food waste by removing contaminants with food-grade gasses and electricity

Energetic Insurance logo

Energetic Insurance

Energy & Power

Unlocking solar financing for unrated or below investment grade organizations.

ALP Technologies logo

ALP Technologies

Energy & Power

Medley Thermal logo

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 logo

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 logo

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 logo

Anzu Partners

Manufacturing & Processing

Oxylus Energy logo

Oxylus Energy

Transportation & Logistics

Full Cycle Bioplastics logo

Full Cycle Bioplastics

Manufacturing & Processing

Infinite Cooling logo

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 logo

GreenIRR

Transportation & Logistics

Osmoses logo

Osmoses

Manufacturing & Processing

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

InventWood logo

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 logo

Blue Atlas Robotics

Manufacturing & Processing

JURA Bio logo

JURA Bio

Food, Water, & Land

Alloy Enterprises logo

Alloy Enterprises

Manufacturing & Processing

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

R3 Energy logo

R3 Energy

Energy & Power

AIRCO logo

AIRCO

Energy & Power

Altitude logo

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 logo

GreenLabs Recycling

Manufacturing & Processing

Clean Crop Technologies logo

Clean Crop Technologies

Food, Water, & Land

Improving food safety and reducing food waste by removing contaminants with food-grade gasses and electricity

Energetic Insurance logo

Energetic Insurance

Energy & Power

Unlocking solar financing for unrated or below investment grade organizations.

ALP Technologies logo

ALP Technologies

Energy & Power

Medley Thermal logo

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 logo

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 logo

Metalmark Innovations

Transportation & Logistics

Maxwellian logo

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 logo

Arbor Energy Holdings Inc

Energy & Power

Digital-energy platform to help homeowners live more sustainably

Patch logo

Patch

Transportation & Logistics

Starfield logo

Starfield

Food, Water, & Land

Eos Loan logo

Eos Loan

Energy & Power

Moonflower Farms logo

Moonflower Farms

Food, Water, & Land

Moonflower Technologies uses space age technology to solve real world problems.

WeaveGrid logo

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 logo

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 logo

Heliotrope Photonics

Energy & Power

Coating technology that enhances solar-panel performance by transforming wasted sunlight

Searover Robotics and Software logo

Searover Robotics and Software

Manufacturing & Processing

Exakom logo

Exakom

Manufacturing & Processing

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

Hempitecture logo

Hempitecture

Manufacturing & Processing

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

Ebb Carbon logo

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 logo

Folia Materials

Manufacturing & Processing

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

Earthbond logo

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 logo

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 logo

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 logo

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 logo

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 logo

Metalmark Innovations

Transportation & Logistics

Maxwellian logo

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 logo

Arbor Energy Holdings Inc

Energy & Power

Digital-energy platform to help homeowners live more sustainably

Patch logo

Patch

Transportation & Logistics

Starfield logo

Starfield

Food, Water, & Land

Eos Loan logo

Eos Loan

Energy & Power

Moonflower Farms logo

Moonflower Farms

Food, Water, & Land

Moonflower Technologies uses space age technology to solve real world problems.

WeaveGrid logo

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 logo

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 logo

Heliotrope Photonics

Energy & Power

Coating technology that enhances solar-panel performance by transforming wasted sunlight

Searover Robotics and Software logo

Searover Robotics and Software

Manufacturing & Processing

Exakom logo

Exakom

Manufacturing & Processing

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

Hempitecture logo

Hempitecture

Manufacturing & Processing

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

Ebb Carbon logo

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 logo

Folia Materials

Manufacturing & Processing

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

Earthbond logo

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 logo

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 logo

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 logo

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 logo

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.

Greentown member working in a wet lab
Greentown community members collaborating
Greentown member pipetting in a lab
Greentown members at work in the incubator
[ 03 ]Who We Are

Greentown is a 501(c)(3) nonprofit helping climate entrepreneurs build faster.

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.

[ 04 ]By The Numbers

Our Impact

Our members aren't just building better ways to operate; they're slashing emissions, boosting efficiency, and transforming how we use resources across the world. Now 15 years and counting, the impact speaks for itself.
Capital Mobilized

Our Startups Have Raised Over $0B

2011Now
Startups Supported

All-time

0

Currently home to

0

Global Footprint

0+

Countries Where
Startups Operate

Jobs Created

0

New Jobs Created by Our Members, and Counting

[ 05 ]Our Partners

Where Industry Meets Innovation

Startups bring the breakthroughs. Corporate partners bring the scale, infrastructure, expertise, and capital to make them matter.

  • Amazon
  • Amrize
  • Aramco
  • BCG
  • Chevron
  • Dassault Systemes
  • Emerson
  • Enel
  • Equinor
  • Foley Hoag
  • Fortescue
  • GeSI
  • GE Vernova
  • OnTerris (fka Montrose)
  • Saint-Gobain
  • Shell
  • TotalEnergies
  • Vinson & Elkins
  • Woodside Energy
For Startups

Apply for Membership

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.

Greentown member prototyping hardware in the lab
For Partners
Greentown partners networking at an event

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.

Explore Partnership
Events
Speaker presenting on stage at a Greentown event

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.

View Calendar
For Investors
Founders and investors connecting at a Greentown incubator

Explore Investing

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

Explore Investing