Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
Riptide Autonomous Solutions logo

Riptide Autonomous Solutions

Transportation & Logistics

Innovative, affordable unmanned maritime vehicles

Hygen logo

Hygen

Energy & Power

Supercharger that fuels gas-powered vehicles efficiently

R&B Technology logo

R&B Technology

Manufacturing & Processing

R&B Technology (USA) Company Inc. — develops Ari, a cloud-based augmented intelligence software platform that analyzes data and creates holistic recommendations—and elegant visualizations—based on insights that are impossible to see otherwise.

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.

CeraPhi Energy logo

CeraPhi Energy

Energy & Power

CeraPhi Energy — is a geothermal energy company developing a “plug and play” scalable technology platform.

ICODOS logo

ICODOS

Manufacturing & Processing

Scalable clean methanol to decarbonize transport and chemicals

Full Cycle Bioplastics logo

Full Cycle Bioplastics

Manufacturing & Processing

Converting organic waste into a biodegradable, compostable, plastic-alternative material

InfiSense logo

InfiSense

HyperKelp logo

HyperKelp

Food, Water, & Land

HyperKelp — produces the Kelp Smart Buoy—a hosted payload platform capable of carrying hundreds of sensors—that collects and transmits marine-level data for wind farmers, climate scientists, and military intelligence officials.

Electrona Robotics logo

Electrona Robotics

Manufacturing & Processing

Remote submersibles for research, exploration, and education

Texas Geothermal Energy Alliance logo

Texas Geothermal Energy Alliance

Energy & Power

Advocacy organization advancing geothermal energy in Texas

Energy Intelligence logo

Energy Intelligence

Energy & Power

Energy Intelligence — develops ultra-compact energy harvesting systems that are installed on roads to turn the motion of vehicles into electricity.

RenewCO₂ logo

RenewCO₂

Manufacturing & Processing

Electrochemical process to convert CO₂ into fuels and chemicals, such as SAF and propylene glycol

Ecolectro logo

Ecolectro

Manufacturing & Processing

Commercializing alkaline-exchange materials for electrolyzers and fuel cells

enaDyne logo

enaDyne

Manufacturing & Processing

enaDyne — develops non-thermal plasma catalysis reactors to convert CO2 into chemicals and fuels.

Forty Acres Consulting logo

Forty Acres Consulting

Transportation & Logistics

Forty Acres Consulting — consults for both large Fortune 500 companies and startups big and small. They specialize in scaling, supply chain, logistics, business development and healthcare.

Canetia Analytics logo

Canetia Analytics

Transportation & Logistics

Canetia Analytics — monitors structures and their natural vibration signature through IoT, artificial intelligence and machine learning to enable a building to be seen from the inside to the outside, continuously and automatically.

InnoSepra logo

InnoSepra

Energy & Power

Short- and medium-term carbon reduction and credit solutions

Clean Power logo

Clean Power

Energy & Power

Hydrogen PEM fuel cell that improves performance and longevity while reducing costs by eliminating platinum catalysts

Celadyne logo

Celadyne

Energy & Power

Hydrogen for defense, industry, and heavy-duty transport

Riptide Autonomous Solutions logo

Riptide Autonomous Solutions

Transportation & Logistics

Innovative, affordable unmanned maritime vehicles

Hygen logo

Hygen

Energy & Power

Supercharger that fuels gas-powered vehicles efficiently

R&B Technology logo

R&B Technology

Manufacturing & Processing

R&B Technology (USA) Company Inc. — develops Ari, a cloud-based augmented intelligence software platform that analyzes data and creates holistic recommendations—and elegant visualizations—based on insights that are impossible to see otherwise.

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.

CeraPhi Energy logo

CeraPhi Energy

Energy & Power

CeraPhi Energy — is a geothermal energy company developing a “plug and play” scalable technology platform.

ICODOS logo

ICODOS

Manufacturing & Processing

Scalable clean methanol to decarbonize transport and chemicals

Full Cycle Bioplastics logo

Full Cycle Bioplastics

Manufacturing & Processing

Converting organic waste into a biodegradable, compostable, plastic-alternative material

InfiSense logo

InfiSense

HyperKelp logo

HyperKelp

Food, Water, & Land

HyperKelp — produces the Kelp Smart Buoy—a hosted payload platform capable of carrying hundreds of sensors—that collects and transmits marine-level data for wind farmers, climate scientists, and military intelligence officials.

Electrona Robotics logo

Electrona Robotics

Manufacturing & Processing

Remote submersibles for research, exploration, and education

Texas Geothermal Energy Alliance logo

Texas Geothermal Energy Alliance

Energy & Power

Advocacy organization advancing geothermal energy in Texas

Energy Intelligence logo

Energy Intelligence

Energy & Power

Energy Intelligence — develops ultra-compact energy harvesting systems that are installed on roads to turn the motion of vehicles into electricity.

RenewCO₂ logo

RenewCO₂

Manufacturing & Processing

Electrochemical process to convert CO₂ into fuels and chemicals, such as SAF and propylene glycol

Ecolectro logo

Ecolectro

Manufacturing & Processing

Commercializing alkaline-exchange materials for electrolyzers and fuel cells

enaDyne logo

enaDyne

Manufacturing & Processing

enaDyne — develops non-thermal plasma catalysis reactors to convert CO2 into chemicals and fuels.

Forty Acres Consulting logo

Forty Acres Consulting

Transportation & Logistics

Forty Acres Consulting — consults for both large Fortune 500 companies and startups big and small. They specialize in scaling, supply chain, logistics, business development and healthcare.

Canetia Analytics logo

Canetia Analytics

Transportation & Logistics

Canetia Analytics — monitors structures and their natural vibration signature through IoT, artificial intelligence and machine learning to enable a building to be seen from the inside to the outside, continuously and automatically.

InnoSepra logo

InnoSepra

Energy & Power

Short- and medium-term carbon reduction and credit solutions

Clean Power logo

Clean Power

Energy & Power

Hydrogen PEM fuel cell that improves performance and longevity while reducing costs by eliminating platinum catalysts

Celadyne logo

Celadyne

Energy & Power

Hydrogen for defense, industry, and heavy-duty transport

ALLY Energy logo

ALLY Energy

Infrastructure & Construction

ALLY Energy — is an energy tech and human capital services company that offers packaged services and bespoke offerings such as talent engagement, culture development and design, recruitment training and coaching, and consulting.

Enviro Power Technologies logo

Enviro Power Technologies

Energy & Power

Enviro Power Technologies — is replacing aging heating equipment with their breakthrough SmartWatt heat & power technology providing energy solutions servicing millions of homes, businesses and their power utilities in lowering ever increasing utility bills and increasing resiliency and reliability.

GeoFuels logo

GeoFuels

Energy & Power

We are positioned to solve the problem of clean hydrogen not competing economically against alternatives. Through geothermal power and methane pyrolysis we believe we have the solution.

Climate Core Capital logo

Climate Core Capital

Infrastructure & Construction

Climate Core — runs a climate-oriented real estate strategy, namely acquiring buildings in low climate risk locations and making those buildings the most resilient in the built environment.

CarbonFree logo

CarbonFree

Manufacturing & Processing

Transforming CO₂ into carbon-negative chemicals from stationary point source emitters

Carbon Negative Solutions logo

Carbon Negative Solutions

Infrastructure & Construction

Carbon-negative concrete created using AI

Energiency logo

Energiency

Manufacturing & Processing

Energy intelligence for manufacturing

MacroCycle Technologies logo

MacroCycle Technologies

Manufacturing & Processing

Chemical-recycling process to turn PET and polyester-fiber waste into virgin-grade plastics

Piaggio Fast Forward logo

Piaggio Fast Forward

Transportation & Logistics

Research and development for clean mobility solutions

Universal Matter Inc. logo

Universal Matter Inc.

Manufacturing & Processing

Producing graphene from carbon waste streams

Tycho Solutions logo

Tycho Solutions

Energy & Power

Geospatial software for clean energy site selection

Littoral Power Systems logo

Littoral Power Systems

Energy & Power

LPS sells and maintains innovative, cost-effective, low impact hydropower and ocean power equipment.

Aeon Blue Technologies logo

Aeon Blue Technologies

Manufacturing & Processing

By matching chemical plant production with green variable power, ABT offers a solution that can boost profit margins by reducing electricity costs, making plants safer for employees and surrounding communities, and solving one of the most pressing challenges faced by the industrial sector: manufacturing without carbon. Aeon Blue aims for swift deployment of its advanced intermittency technology through licensing and EPC support with a fee and royalties model.

Foray Bioscience logo

Foray Bioscience

Manufacturing & Processing

Viable alternatives to tree-sourced goods

Circe Bioscience logo

Circe Bioscience

Food, Water, & Land

Circe Industries circularizes industries with cellular factories.

Interface Polymers logo

Interface Polymers

Manufacturing & Processing

Enhancing polyolefin performance with additives for better compatibility and cost efficiency

Allium Engineering logo

Allium Engineering

Manufacturing & Processing

Allium Engineering — is a US-based startup founded by two MIT Ph.D graduates that designs and manufactures coated rebar technology that will create a more resilient, affordable, and sustainable infrastructure.

Lignium Energy logo

Lignium Energy

Energy & Power

Lignium Energy — transforms cow manure into combustion pellets, generating a certified and odorless product with a high calorific power that complies with all the regulations to be used.

Vistex Composites logo

Vistex Composites

Manufacturing & Processing

Vistex Composites is a manufacturing innovation company that has developed disruptive technology for the manufacture of advanced composite products. Our patented PFL™ process can be integrated into existing manufacturing plants, or finished products can be manufactured with Vistex's in-house manufacturing team.

Blue Atlas Robotics logo

Blue Atlas Robotics

Manufacturing & Processing

Rapid, large-scale data collection and 3D-modeling of underwater assets

ALLY Energy logo

ALLY Energy

Infrastructure & Construction

ALLY Energy — is an energy tech and human capital services company that offers packaged services and bespoke offerings such as talent engagement, culture development and design, recruitment training and coaching, and consulting.

Enviro Power Technologies logo

Enviro Power Technologies

Energy & Power

Enviro Power Technologies — is replacing aging heating equipment with their breakthrough SmartWatt heat & power technology providing energy solutions servicing millions of homes, businesses and their power utilities in lowering ever increasing utility bills and increasing resiliency and reliability.

GeoFuels logo

GeoFuels

Energy & Power

We are positioned to solve the problem of clean hydrogen not competing economically against alternatives. Through geothermal power and methane pyrolysis we believe we have the solution.

Climate Core Capital logo

Climate Core Capital

Infrastructure & Construction

Climate Core — runs a climate-oriented real estate strategy, namely acquiring buildings in low climate risk locations and making those buildings the most resilient in the built environment.

CarbonFree logo

CarbonFree

Manufacturing & Processing

Transforming CO₂ into carbon-negative chemicals from stationary point source emitters

Carbon Negative Solutions logo

Carbon Negative Solutions

Infrastructure & Construction

Carbon-negative concrete created using AI

Energiency logo

Energiency

Manufacturing & Processing

Energy intelligence for manufacturing

MacroCycle Technologies logo

MacroCycle Technologies

Manufacturing & Processing

Chemical-recycling process to turn PET and polyester-fiber waste into virgin-grade plastics

Piaggio Fast Forward logo

Piaggio Fast Forward

Transportation & Logistics

Research and development for clean mobility solutions

Universal Matter Inc. logo

Universal Matter Inc.

Manufacturing & Processing

Producing graphene from carbon waste streams

Tycho Solutions logo

Tycho Solutions

Energy & Power

Geospatial software for clean energy site selection

Littoral Power Systems logo

Littoral Power Systems

Energy & Power

LPS sells and maintains innovative, cost-effective, low impact hydropower and ocean power equipment.

Aeon Blue Technologies logo

Aeon Blue Technologies

Manufacturing & Processing

By matching chemical plant production with green variable power, ABT offers a solution that can boost profit margins by reducing electricity costs, making plants safer for employees and surrounding communities, and solving one of the most pressing challenges faced by the industrial sector: manufacturing without carbon. Aeon Blue aims for swift deployment of its advanced intermittency technology through licensing and EPC support with a fee and royalties model.

Foray Bioscience logo

Foray Bioscience

Manufacturing & Processing

Viable alternatives to tree-sourced goods

Circe Bioscience logo

Circe Bioscience

Food, Water, & Land

Circe Industries circularizes industries with cellular factories.

Interface Polymers logo

Interface Polymers

Manufacturing & Processing

Enhancing polyolefin performance with additives for better compatibility and cost efficiency

Allium Engineering logo

Allium Engineering

Manufacturing & Processing

Allium Engineering — is a US-based startup founded by two MIT Ph.D graduates that designs and manufactures coated rebar technology that will create a more resilient, affordable, and sustainable infrastructure.

Lignium Energy logo

Lignium Energy

Energy & Power

Lignium Energy — transforms cow manure into combustion pellets, generating a certified and odorless product with a high calorific power that complies with all the regulations to be used.

Vistex Composites logo

Vistex Composites

Manufacturing & Processing

Vistex Composites is a manufacturing innovation company that has developed disruptive technology for the manufacture of advanced composite products. Our patented PFL™ process can be integrated into existing manufacturing plants, or finished products can be manufactured with Vistex's in-house manufacturing team.

Blue Atlas Robotics logo

Blue Atlas Robotics

Manufacturing & Processing

Rapid, large-scale data collection and 3D-modeling of underwater assets

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