Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
Carbontec logo

Carbontec

Infrastructure & Construction

Diffraqtion logo

Diffraqtion

Manufacturing & Processing

Machine Vision at the Quantum Limit

Massachusetts Materials Technologies logo

Massachusetts Materials Technologies

Energy & Power

Seamlessly measuring the mechanical properties of pipelines without interruption

Fysikes Biosolutions logo

Fysikes Biosolutions

Energy & Power

Fysikes Biosolutions — develops renewable green fuels (methanol, ammonia, and naphtas) via the production of hydrogen and concentrated CO2 from direct air capture and industrial CO2 capture technologies.

FGC Plasma Solutions logo

FGC Plasma Solutions

Energy & Power

Innovator Energy logo

Innovator Energy

Energy & Power

Developing and deploying solutions in cooling, heating, and heat transfer

Katz Water Technologies logo

Katz Water Technologies

Energy & Power

Katz Water Technologies — recycles their customers’ waste water instead of disposing it and sells the components as valuable materials.

ALP Technologies logo

ALP Technologies

Energy & Power

Pika Energy logo

Pika Energy

Energy & Power

Geckskin logo

Geckskin

Manufacturing & Processing

Mithril Technologies logo

Mithril Technologies

Infrastructure & Construction

Reshapable reflectors for advanced antennas & radars for space-based earth and severe weather monitoring

MagDrive Technologies Inc. logo

MagDrive Technologies Inc.

Manufacturing & Processing

Eliminating fugitive emissions and delivering zero-leak performance and durability

Nfinite Nanotech logo

Nfinite Nanotech

Manufacturing & Processing

PlaSene logo

PlaSene

Manufacturing & Processing

Converting plastic waste into liquid fuel and low-carbon hydrogen

Hera Materials logo

Hera Materials

Manufacturing & Processing

Regenerative plastics made from diverse, local biomass, powered by robotics and AI

Salient Energy logo

Salient Energy

Energy & Power

Green Path Strategies logo

Green Path Strategies

Energy & Power

RailPod logo

RailPod

Transportation & Logistics

Visolis logo

Visolis

Infrastructure & Construction

CGIS logo

CGIS

Energy & Power

Carbontec logo

Carbontec

Infrastructure & Construction

Diffraqtion logo

Diffraqtion

Manufacturing & Processing

Machine Vision at the Quantum Limit

Massachusetts Materials Technologies logo

Massachusetts Materials Technologies

Energy & Power

Seamlessly measuring the mechanical properties of pipelines without interruption

Fysikes Biosolutions logo

Fysikes Biosolutions

Energy & Power

Fysikes Biosolutions — develops renewable green fuels (methanol, ammonia, and naphtas) via the production of hydrogen and concentrated CO2 from direct air capture and industrial CO2 capture technologies.

FGC Plasma Solutions logo

FGC Plasma Solutions

Energy & Power

Innovator Energy logo

Innovator Energy

Energy & Power

Developing and deploying solutions in cooling, heating, and heat transfer

Katz Water Technologies logo

Katz Water Technologies

Energy & Power

Katz Water Technologies — recycles their customers’ waste water instead of disposing it and sells the components as valuable materials.

ALP Technologies logo

ALP Technologies

Energy & Power

Pika Energy logo

Pika Energy

Energy & Power

Geckskin logo

Geckskin

Manufacturing & Processing

Mithril Technologies logo

Mithril Technologies

Infrastructure & Construction

Reshapable reflectors for advanced antennas & radars for space-based earth and severe weather monitoring

MagDrive Technologies Inc. logo

MagDrive Technologies Inc.

Manufacturing & Processing

Eliminating fugitive emissions and delivering zero-leak performance and durability

Nfinite Nanotech logo

Nfinite Nanotech

Manufacturing & Processing

PlaSene logo

PlaSene

Manufacturing & Processing

Converting plastic waste into liquid fuel and low-carbon hydrogen

Hera Materials logo

Hera Materials

Manufacturing & Processing

Regenerative plastics made from diverse, local biomass, powered by robotics and AI

Salient Energy logo

Salient Energy

Energy & Power

Green Path Strategies logo

Green Path Strategies

Energy & Power

RailPod logo

RailPod

Transportation & Logistics

Visolis logo

Visolis

Infrastructure & Construction

CGIS logo

CGIS

Energy & Power

Dugu Systems logo

Dugu Systems

Energy & Power

Zero-carbon power with an emissions-free gas turbine

Energy Toolbase logo

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.

HarvestAi logo

HarvestAi

Food, Water, & Land

Computer vision and AI to provide greenhouse operators with automated data for optimized harvest planning

Eclipse Solar Projects logo

Eclipse Solar Projects

Energy & Power

Eclipse Solar Projects is a developer of utility-scale solar assets that generates, and then sells, power/electricity wholesale.

FAST Metals logo

FAST Metals

Manufacturing & Processing

Hydrometallurgical-recovery process for extracting rare-earth elements from industrial tailings

Upgraid logo

Upgraid

Infrastructure & Construction

AI and satellite data that diagnose buildings and run energy simulations, to produce ready-to-pitch upgrade proposals

SepPure Technologies logo

SepPure Technologies

Transportation & Logistics

SepPure — is dramatically reducing energy consumption and pollution globally by enabling the most effective chemical separation at a molecular level, without the traditional use of heat.

Embr Labs logo

Embr Labs

Tank Utility logo

Tank Utility

Energy & Power

Overstory logo

Overstory

Food, Water, & Land

Minimizing vegetation contact with power lines using satellite imagery, climate data, and machine learning

CarTwin logo

CarTwin

Transportation & Logistics

CarTwin is unlocking the value of automative data by creating an integrated data ecosystem to drive actionable insight and predictive analytics to address the industry’s most pressing challenges. Its digital twin technology enables a diverse set of automotive use cases that power new innovations by connecting physical and digital worlds providing real-time operational awareness of vehicle, component, and manufacturing performance.

BluBridge Energy Solutions logo

BluBridge Energy Solutions

Energy & Power

Removing undesired elements from pre- and post-combustion gas streams

Arbon logo

Arbon

Energy & Power

Low energy humidity-driven modular tech capturing and releasing CO2 for practical decarbonization

Suyana Climate Insurance logo

Suyana Climate Insurance

Greentown Labs logo

Greentown Labs

Dottir Labs logo

Dottir Labs

Food, Water, & Land

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

Anzu Partners logo

Anzu Partners

Manufacturing & Processing

Foray Bioscience logo

Foray Bioscience

Manufacturing & Processing

Salient Predictions logo

Salient Predictions

Food, Water, & Land

Salient Predictions uses ocean data and machine learning to provide the world's most accurate weather forecasts from 3 weeks to 9 months out, enabling climate change resiliency and mitigation within industry.

Polymer-X logo

Polymer-X

Manufacturing & Processing

Dugu Systems logo

Dugu Systems

Energy & Power

Zero-carbon power with an emissions-free gas turbine

Energy Toolbase logo

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.

HarvestAi logo

HarvestAi

Food, Water, & Land

Computer vision and AI to provide greenhouse operators with automated data for optimized harvest planning

Eclipse Solar Projects logo

Eclipse Solar Projects

Energy & Power

Eclipse Solar Projects is a developer of utility-scale solar assets that generates, and then sells, power/electricity wholesale.

FAST Metals logo

FAST Metals

Manufacturing & Processing

Hydrometallurgical-recovery process for extracting rare-earth elements from industrial tailings

Upgraid logo

Upgraid

Infrastructure & Construction

AI and satellite data that diagnose buildings and run energy simulations, to produce ready-to-pitch upgrade proposals

SepPure Technologies logo

SepPure Technologies

Transportation & Logistics

SepPure — is dramatically reducing energy consumption and pollution globally by enabling the most effective chemical separation at a molecular level, without the traditional use of heat.

Embr Labs logo

Embr Labs

Tank Utility logo

Tank Utility

Energy & Power

Overstory logo

Overstory

Food, Water, & Land

Minimizing vegetation contact with power lines using satellite imagery, climate data, and machine learning

CarTwin logo

CarTwin

Transportation & Logistics

CarTwin is unlocking the value of automative data by creating an integrated data ecosystem to drive actionable insight and predictive analytics to address the industry’s most pressing challenges. Its digital twin technology enables a diverse set of automotive use cases that power new innovations by connecting physical and digital worlds providing real-time operational awareness of vehicle, component, and manufacturing performance.

BluBridge Energy Solutions logo

BluBridge Energy Solutions

Energy & Power

Removing undesired elements from pre- and post-combustion gas streams

Arbon logo

Arbon

Energy & Power

Low energy humidity-driven modular tech capturing and releasing CO2 for practical decarbonization

Suyana Climate Insurance logo

Suyana Climate Insurance

Greentown Labs logo

Greentown Labs

Dottir Labs logo

Dottir Labs

Food, Water, & Land

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

Anzu Partners logo

Anzu Partners

Manufacturing & Processing

Foray Bioscience logo

Foray Bioscience

Manufacturing & Processing

Salient Predictions logo

Salient Predictions

Food, Water, & Land

Salient Predictions uses ocean data and machine learning to provide the world's most accurate weather forecasts from 3 weeks to 9 months out, enabling climate change resiliency and mitigation within industry.

Polymer-X logo

Polymer-X

Manufacturing & Processing

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