Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
Armada AI logo

Armada AI

Element Resources logo

Element Resources

Energy & Power

Developing large-scale green hydrogen projects

EQORE logo

EQORE

EQORE is an end-to-end provider of intelligent and autonomous energy storage for commercial and industrial facilities, aimed at minimizing their electricity costs. By offering unprecedented ROIs, EQORE makes adding distributed storage to the grid financially attractive, promoting grid resilience while supporting businesses.

Capro-X logo

Capro-X

Food, Water, & Land

Sustainable biochemicals made from food waste at food production plants, creating alternatives to palm-oil chemicals

BiaTech Corporation logo

BiaTech Corporation

Energy & Power

Energy and natural resource infrastructure immersion with AI-enabled edge and cloud technology

PURGIT logo

PURGIT

Transportation & Logistics

Build a verifiable vapor control system that makes no pollution and recovers the VOC for recycling. Reduce air pollution and claim carbon credits.

Energy Dome logo

Energy Dome

Energy & Power

EnergyDome — has ideated and patented a revolutionary technology for large-scale and long-duration energy storage: The CO2 Battery.

Realizse logo

Realizse

Energy & Power

Tokenization and product verification for circularity, energy, and the real estate markets

Carbonbase logo

Carbonbase

Diffraqtion logo

Diffraqtion

Manufacturing & Processing

Machine Vision at the Quantum Limit

LOCOAL logo

LOCOAL

Manufacturing & Processing

Turning waste into value, and producing clean energy, biofuels, and carbon credits

7Analytics logo

7Analytics

Infrastructure & Construction

7Analytics is a climate-tech startup developing superior high-precision predictive models for floods, enhancing urban resilience to climate change. Our mission is to empower asset owners, insurance companies and governance with the tools needed to mitigate the impacts of extreme weather events.

Ohmium International logo

Ohmium International

Energy & Power

Searover Robotics and Software logo

Searover Robotics and Software

Manufacturing & Processing

Studio 3e8 logo

Studio 3e8

Manufacturing & Processing

Metal 3D printing in a desktop form factor.

Oxylus Energy logo

Oxylus Energy

Transportation & Logistics

Felixfusion logo

Felixfusion

Terrapin Geothermics logo

Terrapin Geothermics

Energy & Power

Terrapin Geothermics — develops energy projects that reduce the emissions intensity of the industrial sectors.

CZAR Power logo

CZAR Power

Energy & Power

pH Matter logo

pH Matter

Energy & Power

Armada AI logo

Armada AI

Element Resources logo

Element Resources

Energy & Power

Developing large-scale green hydrogen projects

EQORE logo

EQORE

EQORE is an end-to-end provider of intelligent and autonomous energy storage for commercial and industrial facilities, aimed at minimizing their electricity costs. By offering unprecedented ROIs, EQORE makes adding distributed storage to the grid financially attractive, promoting grid resilience while supporting businesses.

Capro-X logo

Capro-X

Food, Water, & Land

Sustainable biochemicals made from food waste at food production plants, creating alternatives to palm-oil chemicals

BiaTech Corporation logo

BiaTech Corporation

Energy & Power

Energy and natural resource infrastructure immersion with AI-enabled edge and cloud technology

PURGIT logo

PURGIT

Transportation & Logistics

Build a verifiable vapor control system that makes no pollution and recovers the VOC for recycling. Reduce air pollution and claim carbon credits.

Energy Dome logo

Energy Dome

Energy & Power

EnergyDome — has ideated and patented a revolutionary technology for large-scale and long-duration energy storage: The CO2 Battery.

Realizse logo

Realizse

Energy & Power

Tokenization and product verification for circularity, energy, and the real estate markets

Carbonbase logo

Carbonbase

Diffraqtion logo

Diffraqtion

Manufacturing & Processing

Machine Vision at the Quantum Limit

LOCOAL logo

LOCOAL

Manufacturing & Processing

Turning waste into value, and producing clean energy, biofuels, and carbon credits

7Analytics logo

7Analytics

Infrastructure & Construction

7Analytics is a climate-tech startup developing superior high-precision predictive models for floods, enhancing urban resilience to climate change. Our mission is to empower asset owners, insurance companies and governance with the tools needed to mitigate the impacts of extreme weather events.

Ohmium International logo

Ohmium International

Energy & Power

Searover Robotics and Software logo

Searover Robotics and Software

Manufacturing & Processing

Studio 3e8 logo

Studio 3e8

Manufacturing & Processing

Metal 3D printing in a desktop form factor.

Oxylus Energy logo

Oxylus Energy

Transportation & Logistics

Felixfusion logo

Felixfusion

Terrapin Geothermics logo

Terrapin Geothermics

Energy & Power

Terrapin Geothermics — develops energy projects that reduce the emissions intensity of the industrial sectors.

CZAR Power logo

CZAR Power

Energy & Power

pH Matter logo

pH Matter

Energy & Power

Eos Loan logo

Eos Loan

Energy & Power

Folia Materials logo

Folia Materials

Manufacturing & Processing

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

Nfinite Nanotech logo

Nfinite Nanotech

Manufacturing & Processing

Carbonext logo

Carbonext

Manufacturing & Processing

3D-graphene technology that develops integrated solutions with carbon-coated silicon anodes

Provocative logo

Provocative

Manufacturing & Processing

Replacing data centers’ cooling systems with carbon capture

Dottir Labs logo

Dottir Labs

Food, Water, & Land

Sensor technology that provides real-time, detailed chemical analysis of water

Excipio Energy logo

Excipio Energy

Energy & Power

Excipio Energy — is an offshore renewable energy company integrating wind, wave, currents, OTEC, and power-to-fuel in a single floating platform.

Julius Education logo

Julius Education

Infrastructure & Construction

Helping green organizations manage the changing workforce through an experience platform for job-seekers

Trillium Brewing Company logo

Trillium Brewing Company

Food, Water, & Land

Wellbore Consultants logo

Wellbore Consultants

Energy & Power

Advanced subsurface stimulation systems to improve resource recovery while reducing energy intensity, water usage, and surface impact

TalkingHeads Wireless logo

TalkingHeads Wireless

Energy & Power

TalkingHeads Wireless — develops Smart Network Towers, starting with the world’s most energy-efficient remote radio heads (RRH), which is the hardware box that sits at the top of the cell tower.

OpConnect logo

OpConnect

Transportation & Logistics

OpConnect — is an EV charger company that provides charging station hardware, software, and operating services. Their cloud-based software platform provides energy management, payment processing, scheduling and maintenance tickets, and support services for users.

Open Ocean Robotics logo

Open Ocean Robotics

Energy & Power

Circularise logo

Circularise

Manufacturing & Processing

rStream logo

rStream

Manufacturing & Processing

Autonomous waste-sorting system for non-industrial settings with critical waste volumes

Pika Energy logo

Pika Energy

Energy & Power

Global ROC logo

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.

Teal Bio logo

Teal Bio

Manufacturing & Processing

Reusable N95 respirator system for healthcare workers to reduce landfill waste

Ecolectro logo

Ecolectro

Manufacturing & Processing

Fleet Robotics logo

Fleet Robotics

Transportation & Logistics

Robotics to clean biofouling from ship hulls, improving fuel consumption for large ships

Eos Loan logo

Eos Loan

Energy & Power

Folia Materials logo

Folia Materials

Manufacturing & Processing

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

Nfinite Nanotech logo

Nfinite Nanotech

Manufacturing & Processing

Carbonext logo

Carbonext

Manufacturing & Processing

3D-graphene technology that develops integrated solutions with carbon-coated silicon anodes

Provocative logo

Provocative

Manufacturing & Processing

Replacing data centers’ cooling systems with carbon capture

Dottir Labs logo

Dottir Labs

Food, Water, & Land

Sensor technology that provides real-time, detailed chemical analysis of water

Excipio Energy logo

Excipio Energy

Energy & Power

Excipio Energy — is an offshore renewable energy company integrating wind, wave, currents, OTEC, and power-to-fuel in a single floating platform.

Julius Education logo

Julius Education

Infrastructure & Construction

Helping green organizations manage the changing workforce through an experience platform for job-seekers

Trillium Brewing Company logo

Trillium Brewing Company

Food, Water, & Land

Wellbore Consultants logo

Wellbore Consultants

Energy & Power

Advanced subsurface stimulation systems to improve resource recovery while reducing energy intensity, water usage, and surface impact

TalkingHeads Wireless logo

TalkingHeads Wireless

Energy & Power

TalkingHeads Wireless — develops Smart Network Towers, starting with the world’s most energy-efficient remote radio heads (RRH), which is the hardware box that sits at the top of the cell tower.

OpConnect logo

OpConnect

Transportation & Logistics

OpConnect — is an EV charger company that provides charging station hardware, software, and operating services. Their cloud-based software platform provides energy management, payment processing, scheduling and maintenance tickets, and support services for users.

Open Ocean Robotics logo

Open Ocean Robotics

Energy & Power

Circularise logo

Circularise

Manufacturing & Processing

rStream logo

rStream

Manufacturing & Processing

Autonomous waste-sorting system for non-industrial settings with critical waste volumes

Pika Energy logo

Pika Energy

Energy & Power

Global ROC logo

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.

Teal Bio logo

Teal Bio

Manufacturing & Processing

Reusable N95 respirator system for healthcare workers to reduce landfill waste

Ecolectro logo

Ecolectro

Manufacturing & Processing

Fleet Robotics logo

Fleet Robotics

Transportation & Logistics

Robotics to clean biofouling from ship hulls, improving fuel consumption for large ships

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