Helping climatetech startupsTransformindustry faster

Riptide Autonomous Solutions
Transportation & Logistics
Innovative, affordable unmanned maritime vehicles

Hygen
Energy & Power
Supercharger that fuels gas-powered vehicles efficiently

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

ICODOS
Manufacturing & Processing
Scalable clean methanol to decarbonize transport and chemicals

Full Cycle Bioplastics
Manufacturing & Processing
Converting organic waste into a biodegradable, compostable, plastic-alternative material

InfiSense

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
Manufacturing & Processing
Remote submersibles for research, exploration, and education

Texas Geothermal Energy Alliance
Energy & Power
Advocacy organization advancing geothermal energy in Texas

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

Ecolectro
Manufacturing & Processing
Commercializing alkaline-exchange materials for electrolyzers and fuel cells

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

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
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
Energy & Power
Short- and medium-term carbon reduction and credit solutions

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

Celadyne
Energy & Power
Hydrogen for defense, industry, and heavy-duty transport

Riptide Autonomous Solutions
Transportation & Logistics
Innovative, affordable unmanned maritime vehicles

Hygen
Energy & Power
Supercharger that fuels gas-powered vehicles efficiently

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

ICODOS
Manufacturing & Processing
Scalable clean methanol to decarbonize transport and chemicals

Full Cycle Bioplastics
Manufacturing & Processing
Converting organic waste into a biodegradable, compostable, plastic-alternative material

InfiSense

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
Manufacturing & Processing
Remote submersibles for research, exploration, and education

Texas Geothermal Energy Alliance
Energy & Power
Advocacy organization advancing geothermal energy in Texas

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

Ecolectro
Manufacturing & Processing
Commercializing alkaline-exchange materials for electrolyzers and fuel cells

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

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
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
Energy & Power
Short- and medium-term carbon reduction and credit solutions

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

Celadyne
Energy & Power
Hydrogen for defense, industry, and heavy-duty transport

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

Carbon Negative Solutions
Infrastructure & Construction
Carbon-negative concrete created using AI

Energiency
Manufacturing & Processing
Energy intelligence for manufacturing

MacroCycle Technologies
Manufacturing & Processing
Chemical-recycling process to turn PET and polyester-fiber waste into virgin-grade plastics

Piaggio Fast Forward
Transportation & Logistics
Research and development for clean mobility solutions

Universal Matter Inc.
Manufacturing & Processing
Producing graphene from carbon waste streams

Tycho Solutions
Energy & Power
Geospatial software for clean energy site selection

Littoral Power Systems
Energy & Power
LPS sells and maintains innovative, cost-effective, low impact hydropower and ocean power equipment.

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
Manufacturing & Processing
Viable alternatives to tree-sourced goods

Circe Bioscience
Food, Water, & Land
Circe Industries circularizes industries with cellular factories.

Interface Polymers
Manufacturing & Processing
Enhancing polyolefin performance with additives for better compatibility and cost efficiency

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

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

Carbon Negative Solutions
Infrastructure & Construction
Carbon-negative concrete created using AI

Energiency
Manufacturing & Processing
Energy intelligence for manufacturing

MacroCycle Technologies
Manufacturing & Processing
Chemical-recycling process to turn PET and polyester-fiber waste into virgin-grade plastics

Piaggio Fast Forward
Transportation & Logistics
Research and development for clean mobility solutions

Universal Matter Inc.
Manufacturing & Processing
Producing graphene from carbon waste streams

Tycho Solutions
Energy & Power
Geospatial software for clean energy site selection

Littoral Power Systems
Energy & Power
LPS sells and maintains innovative, cost-effective, low impact hydropower and ocean power equipment.

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
Manufacturing & Processing
Viable alternatives to tree-sourced goods

Circe Bioscience
Food, Water, & Land
Circe Industries circularizes industries with cellular factories.

Interface Polymers
Manufacturing & Processing
Enhancing polyolefin performance with additives for better compatibility and cost efficiency

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




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
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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.

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