Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
Verdicity logo

Verdicity

Infrastructure & Construction

AI-enabled, customizable smart building, information, and facility services for building vendors

Fervo Energy logo

Fervo Energy

Energy & Power

Fervo Energy — is a next-generation geothermal power developer, delivering 24/7 carbon-free energy.

Oxylus Energy logo

Oxylus Energy

Transportation & Logistics

Accion Systems logo

Accion Systems

Transportation & Logistics

Accion Systems — develops in-space propulsion technologies that optimize scalability, performance, and efficiency to accelerate the exploration of space. Accion’s flagship product, TILE, uses proprietary electrospray thrusters, bringing electric propulsion to satellites of all sizes and redefining in-space capabilities for the 21st century.

Thiozen logo

Thiozen

Manufacturing & Processing

Chemical waste-to-hydrogen cycle that removes hydrogen sulfide from gas streams and generates zero-emission hydrogen

Anzu Partners logo

Anzu Partners

Manufacturing & Processing

Embue logo

Embue

Infrastructure & Construction

Bodhi logo

Bodhi

Energy & Power

Bodhi — cultivates the bond between people and the energy that powers their lives. The company’s software platform empowers solar companies to deliver amazing customer experiences with ease. Bodhi automates communication and personalizes the homeowners’ experience, so that installers can focus on what they do best – executing projects, making more sales, and transforming communities around energy.

Patch logo

Patch

Transportation & Logistics

Spare-it logo

Spare-it

Manufacturing & Processing

Spare-it — is a catalyst for sustainability in the workplace.

ClearTrace logo

ClearTrace

Energy & Power

Product suite for traceable, end-to-end data management of electricity and certificate transactions

Gaia AI logo

Gaia AI

Food, Water, & Land

Collecting high-quality biomass data in forests with drones, LiDAR, and computer vision

Folia Materials logo

Folia Materials

Manufacturing & Processing

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

Planetary Hydrogen logo

Planetary Hydrogen

Manufacturing & Processing

Flight Guard AI logo

Flight Guard AI

Transportation & Logistics

Pilot-wearable safety systems using human-centered AI to enhance pilot awareness

Infranergy logo

Infranergy

Energy & Power

GreenIRR logo

GreenIRR

Transportation & Logistics

Lobster Robotics logo

Lobster Robotics

Food, Water, & Land

Lobster Robotics — develops lightweight, low-cost, fast robots for visual surveying to lower the cost of surveying in offshore wind farms.

Varea Energy logo

Varea Energy

Energy & Power

Varea Energy — aims to help enable the world’s transition to an energy-efficient and sustainable future by rooting out inefficient waste, water, and energy systems to increase sustainability and decrease operational costs for commercial facilities.

EarthEn logo

EarthEn

Energy & Power

Enabling electrification through CO₂-based thermodynamic cycle

Verdicity logo

Verdicity

Infrastructure & Construction

AI-enabled, customizable smart building, information, and facility services for building vendors

Fervo Energy logo

Fervo Energy

Energy & Power

Fervo Energy — is a next-generation geothermal power developer, delivering 24/7 carbon-free energy.

Oxylus Energy logo

Oxylus Energy

Transportation & Logistics

Accion Systems logo

Accion Systems

Transportation & Logistics

Accion Systems — develops in-space propulsion technologies that optimize scalability, performance, and efficiency to accelerate the exploration of space. Accion’s flagship product, TILE, uses proprietary electrospray thrusters, bringing electric propulsion to satellites of all sizes and redefining in-space capabilities for the 21st century.

Thiozen logo

Thiozen

Manufacturing & Processing

Chemical waste-to-hydrogen cycle that removes hydrogen sulfide from gas streams and generates zero-emission hydrogen

Anzu Partners logo

Anzu Partners

Manufacturing & Processing

Embue logo

Embue

Infrastructure & Construction

Bodhi logo

Bodhi

Energy & Power

Bodhi — cultivates the bond between people and the energy that powers their lives. The company’s software platform empowers solar companies to deliver amazing customer experiences with ease. Bodhi automates communication and personalizes the homeowners’ experience, so that installers can focus on what they do best – executing projects, making more sales, and transforming communities around energy.

Patch logo

Patch

Transportation & Logistics

Spare-it logo

Spare-it

Manufacturing & Processing

Spare-it — is a catalyst for sustainability in the workplace.

ClearTrace logo

ClearTrace

Energy & Power

Product suite for traceable, end-to-end data management of electricity and certificate transactions

Gaia AI logo

Gaia AI

Food, Water, & Land

Collecting high-quality biomass data in forests with drones, LiDAR, and computer vision

Folia Materials logo

Folia Materials

Manufacturing & Processing

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

Planetary Hydrogen logo

Planetary Hydrogen

Manufacturing & Processing

Flight Guard AI logo

Flight Guard AI

Transportation & Logistics

Pilot-wearable safety systems using human-centered AI to enhance pilot awareness

Infranergy logo

Infranergy

Energy & Power

GreenIRR logo

GreenIRR

Transportation & Logistics

Lobster Robotics logo

Lobster Robotics

Food, Water, & Land

Lobster Robotics — develops lightweight, low-cost, fast robots for visual surveying to lower the cost of surveying in offshore wind farms.

Varea Energy logo

Varea Energy

Energy & Power

Varea Energy — aims to help enable the world’s transition to an energy-efficient and sustainable future by rooting out inefficient waste, water, and energy systems to increase sustainability and decrease operational costs for commercial facilities.

EarthEn logo

EarthEn

Energy & Power

Enabling electrification through CO₂-based thermodynamic cycle

Climative logo

Climative

Energy & Power

AI-assisted home-energy assessments deployed in an interactive, web-based platform

EcoForge logo

EcoForge

Food, Water, & Land

-- is a building material technology company developing affordable, high-performance building materials from local agricultural residues, replacing energy-intensive, fossil-based materials. This sustainable approach increases resilience to climate and supply chain risks, supports local farming, and job creation. Moreover, EcoForge’s toxic chemical-free material recipe promotes healthier indoor environments.

RISE Robotics logo

RISE Robotics

Manufacturing & Processing

Studio 3e8 logo

Studio 3e8

Manufacturing & Processing

Metal 3D printing in a desktop form factor.

PurposeEnergy logo

PurposeEnergy

Food, Water, & Land

Pirl logo

Pirl

Transportation & Logistics

SWTCH Energy Inc. logo

SWTCH Energy Inc.

Transportation & Logistics

GreenChoice logo

GreenChoice

Food, Water, & Land

Iron Lattice logo

Iron Lattice

Manufacturing & Processing

Building AI memory that powers human potential.

Atlas Robotics logo

Atlas Robotics

Transportation & Logistics

Autonomous Marine Systems logo

Autonomous Marine Systems

Food, Water, & Land

LOCOAL logo

LOCOAL

Manufacturing & Processing

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

Arbor Energy Holdings Inc logo

Arbor Energy Holdings Inc

Energy & Power

Digital-energy platform to help homeowners live more sustainably

enaDyne logo

enaDyne

Manufacturing & Processing

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

Prophet AI logo

Prophet AI

Food, Water, & Land

AI-based poultry-health-monitoring system to reduce chicken mortality, save revenue, and avoid carbon emissions

Sustonable logo

Sustonable

Manufacturing & Processing

Sustonable — mixes post-consumer recycled plastic bottles, recycled glass and natural stone to create a circular, high-quality surface material, that can be used for kitchen tops, wall panels and furniture purposes.

Pike Robotics logo

Pike Robotics

Energy & Power

Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces

HEXAspec logo

HEXAspec

Energy & Power

Thermal management solutions for semiconductor chips, enabling more powerful hardware

AmpUp logo

AmpUp

Transportation & Logistics

Veloce Energy logo

Veloce Energy

Energy & Power

Veloce Energy — develops technology to create intelligent, flexible, and scalable grid-edge energy networks (GrEEN). Initially focused on cost-reduction in EV charging stations, the Veloce FastGrid™ system uniquely combines energy storage, intelligence, a streamlined installation system, and a unique charging-infrastructure-as-a-service model to maximize and deliver customer value.

Climative logo

Climative

Energy & Power

AI-assisted home-energy assessments deployed in an interactive, web-based platform

EcoForge logo

EcoForge

Food, Water, & Land

-- is a building material technology company developing affordable, high-performance building materials from local agricultural residues, replacing energy-intensive, fossil-based materials. This sustainable approach increases resilience to climate and supply chain risks, supports local farming, and job creation. Moreover, EcoForge’s toxic chemical-free material recipe promotes healthier indoor environments.

RISE Robotics logo

RISE Robotics

Manufacturing & Processing

Studio 3e8 logo

Studio 3e8

Manufacturing & Processing

Metal 3D printing in a desktop form factor.

PurposeEnergy logo

PurposeEnergy

Food, Water, & Land

Pirl logo

Pirl

Transportation & Logistics

SWTCH Energy Inc. logo

SWTCH Energy Inc.

Transportation & Logistics

GreenChoice logo

GreenChoice

Food, Water, & Land

Iron Lattice logo

Iron Lattice

Manufacturing & Processing

Building AI memory that powers human potential.

Atlas Robotics logo

Atlas Robotics

Transportation & Logistics

Autonomous Marine Systems logo

Autonomous Marine Systems

Food, Water, & Land

LOCOAL logo

LOCOAL

Manufacturing & Processing

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

Arbor Energy Holdings Inc logo

Arbor Energy Holdings Inc

Energy & Power

Digital-energy platform to help homeowners live more sustainably

enaDyne logo

enaDyne

Manufacturing & Processing

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

Prophet AI logo

Prophet AI

Food, Water, & Land

AI-based poultry-health-monitoring system to reduce chicken mortality, save revenue, and avoid carbon emissions

Sustonable logo

Sustonable

Manufacturing & Processing

Sustonable — mixes post-consumer recycled plastic bottles, recycled glass and natural stone to create a circular, high-quality surface material, that can be used for kitchen tops, wall panels and furniture purposes.

Pike Robotics logo

Pike Robotics

Energy & Power

Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces

HEXAspec logo

HEXAspec

Energy & Power

Thermal management solutions for semiconductor chips, enabling more powerful hardware

AmpUp logo

AmpUp

Transportation & Logistics

Veloce Energy logo

Veloce Energy

Energy & Power

Veloce Energy — develops technology to create intelligent, flexible, and scalable grid-edge energy networks (GrEEN). Initially focused on cost-reduction in EV charging stations, the Veloce FastGrid™ system uniquely combines energy storage, intelligence, a streamlined installation system, and a unique charging-infrastructure-as-a-service model to maximize and deliver customer value.

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