Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
Bevi logo

Bevi

Food, Water, & Land

Radical Plastics logo

Radical Plastics

Manufacturing & Processing

Radical Plastics — is commercializing a patented technology for producing economical, biodegradable plastics that are a drop-in replacement for conventional, persistent plastics.

Carbon Upcycling Technologies logo

Carbon Upcycling Technologies

Manufacturing & Processing

Carbon Upcycling Technologies (Calgary, AB) is a circular decarbonization solution for hard-to-abate industries –- utilizing low-purity industrial CO2 and industrial by-products to decarbonize cement.

TORO Water Air Thermal Technologies Corp. logo

TORO Water Air Thermal Technologies Corp.

Energy & Power

LOCOAL logo

LOCOAL

Manufacturing & Processing

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

Sheetak logo

Sheetak

Manufacturing & Processing

Based in Austin, Texas, Sheetak develops advanced thermoelectric, solid-state cooling, and energy harvesting technologies for high-performance electronics. With expertise in thermoelectric materials, device engineering, and U.S.-based manufacturing, Sheetak provides precision thermal management solutions for applications in photonics, telecommunications, aerospace, defense, computing, and medical systems.

M2X Energy logo

M2X Energy

Manufacturing & Processing

Soliyarn logo

Soliyarn

Manufacturing & Processing

Soliyarn — employs a unique (dry) process to vapor coat polymers on textiles, which leads to washable electronic clothing without wires or bulk.

Planckton Data logo

Planckton Data

Manufacturing & Processing

Planckton Data — is making a platform that is built to manage the entire carbon data lifecycle by automating data collection and conversion and producing insights quickly without the need to make extensive changes to existing systems

Deep Anchor Solutions logo

Deep Anchor Solutions

Infrastructure & Construction

Anchoring solutions for floating applications including energy, aquaculture, and large-scale infrastructure

OffGridBox logo

OffGridBox

Food, Water, & Land

LNK Energies logo

LNK Energies

Energy & Power

LNK is an MIT spin-out enabling zero-emission heavy-duty mobility without a price premium.

Dandelion Energy logo

Dandelion Energy

Infrastructure & Construction

Geothermal heating and cooling systems for homes

Axiom Optics logo

Axiom Optics

Manufacturing & Processing

Axiom Optics — provides optical instrumentation for fundamental sciences (astronomy, physics, biology) and industrial quality control.

Ardent Process Technologies logo

Ardent Process Technologies

Energy & Power

Mocean Energy logo

Mocean Energy

Energy & Power

Hybrid-offshore renewable power stations, combining wave, solar, and battery systems

Vecarius logo

Vecarius

Infrastructure & Construction

Heat-to-electricity technology to boost energy efficiency in mass markets

H2Pro logo

H2Pro

Energy & Power

H2Pro — is enabling the wide scale adoption of sustainable hydrogen fuel by introducing a novel production technology E-TAC.

Decimetrix logo

Decimetrix

Energy & Power

AI platform to help clients measure their carbon footprint

ThermaFuels logo

ThermaFuels

Transportation & Logistics

Deploying scalable, financeable low-carbon methanol and sustainable fuel infrastructure

Bevi logo

Bevi

Food, Water, & Land

Radical Plastics logo

Radical Plastics

Manufacturing & Processing

Radical Plastics — is commercializing a patented technology for producing economical, biodegradable plastics that are a drop-in replacement for conventional, persistent plastics.

Carbon Upcycling Technologies logo

Carbon Upcycling Technologies

Manufacturing & Processing

Carbon Upcycling Technologies (Calgary, AB) is a circular decarbonization solution for hard-to-abate industries –- utilizing low-purity industrial CO2 and industrial by-products to decarbonize cement.

TORO Water Air Thermal Technologies Corp. logo

TORO Water Air Thermal Technologies Corp.

Energy & Power

LOCOAL logo

LOCOAL

Manufacturing & Processing

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

Sheetak logo

Sheetak

Manufacturing & Processing

Based in Austin, Texas, Sheetak develops advanced thermoelectric, solid-state cooling, and energy harvesting technologies for high-performance electronics. With expertise in thermoelectric materials, device engineering, and U.S.-based manufacturing, Sheetak provides precision thermal management solutions for applications in photonics, telecommunications, aerospace, defense, computing, and medical systems.

M2X Energy logo

M2X Energy

Manufacturing & Processing

Soliyarn logo

Soliyarn

Manufacturing & Processing

Soliyarn — employs a unique (dry) process to vapor coat polymers on textiles, which leads to washable electronic clothing without wires or bulk.

Planckton Data logo

Planckton Data

Manufacturing & Processing

Planckton Data — is making a platform that is built to manage the entire carbon data lifecycle by automating data collection and conversion and producing insights quickly without the need to make extensive changes to existing systems

Deep Anchor Solutions logo

Deep Anchor Solutions

Infrastructure & Construction

Anchoring solutions for floating applications including energy, aquaculture, and large-scale infrastructure

OffGridBox logo

OffGridBox

Food, Water, & Land

LNK Energies logo

LNK Energies

Energy & Power

LNK is an MIT spin-out enabling zero-emission heavy-duty mobility without a price premium.

Dandelion Energy logo

Dandelion Energy

Infrastructure & Construction

Geothermal heating and cooling systems for homes

Axiom Optics logo

Axiom Optics

Manufacturing & Processing

Axiom Optics — provides optical instrumentation for fundamental sciences (astronomy, physics, biology) and industrial quality control.

Ardent Process Technologies logo

Ardent Process Technologies

Energy & Power

Mocean Energy logo

Mocean Energy

Energy & Power

Hybrid-offshore renewable power stations, combining wave, solar, and battery systems

Vecarius logo

Vecarius

Infrastructure & Construction

Heat-to-electricity technology to boost energy efficiency in mass markets

H2Pro logo

H2Pro

Energy & Power

H2Pro — is enabling the wide scale adoption of sustainable hydrogen fuel by introducing a novel production technology E-TAC.

Decimetrix logo

Decimetrix

Energy & Power

AI platform to help clients measure their carbon footprint

ThermaFuels logo

ThermaFuels

Transportation & Logistics

Deploying scalable, financeable low-carbon methanol and sustainable fuel infrastructure

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.

Sweetch Energy logo

Sweetch Energy

Energy & Power

Membrane-based technology that taps into osmotic power

Open Ocean Robotics logo

Open Ocean Robotics

Energy & Power

GreenChoice logo

GreenChoice

Food, Water, & Land

American Battery Technology Company logo

American Battery Technology Company

Energy & Power

Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company

NONA Technologies logo

NONA Technologies

Food, Water, & Land

Desalinating brackish water with 60% less electricity, fewer chemical inputs, and less downtime

Regenerative Resources logo

Regenerative Resources

Food, Water, & Land

Regenerative Resources — is an ecosystems services company that acquires highly-degraded land and transforms it in order to reuse it for aquaculture.

Optigon logo

Optigon

Energy & Power

Rapid, contactless characterization for assessing performance during photovoltaic solar cell fabrication

Starfire Energy logo

Starfire Energy

Energy & Power

Hertha Metals Inc. logo

Hertha Metals Inc.

Energy & Power

Pre Framing Corp logo

Pre Framing Corp

Infrastructure & Construction

Exakom logo

Exakom

Manufacturing & Processing

Exakom — is a pioneer in developing innovative data analysis products for the industrial automation market.

ConnectDER logo

ConnectDER

Energy & Power

ConnectDER — unlocks the massive potential of DERs by turning the meter socket into the utility’s all-in-one plug-in point for solar, storage, EVs, and beyond.

CeraPhi Energy logo

CeraPhi Energy

Energy & Power

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

Sparkplug Power logo

Sparkplug Power

Energy & Power

Energy-storage-as-a-service for municipal utilities and commercial businesses

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.

Innoveering logo

Innoveering

Manufacturing & Processing

Carbon Negative Solutions logo

Carbon Negative Solutions

Infrastructure & Construction

FLUIDXLAB Americas Inc. logo

FLUIDXLAB Americas Inc.

Manufacturing & Processing

AI-powered microfluidic tools that help control and improve fluid processes across many industries

Mars Materials logo

Mars Materials

Manufacturing & Processing

Converting CO₂ and biomass into acrylonitrile

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.

Sweetch Energy logo

Sweetch Energy

Energy & Power

Membrane-based technology that taps into osmotic power

Open Ocean Robotics logo

Open Ocean Robotics

Energy & Power

GreenChoice logo

GreenChoice

Food, Water, & Land

American Battery Technology Company logo

American Battery Technology Company

Energy & Power

Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company

NONA Technologies logo

NONA Technologies

Food, Water, & Land

Desalinating brackish water with 60% less electricity, fewer chemical inputs, and less downtime

Regenerative Resources logo

Regenerative Resources

Food, Water, & Land

Regenerative Resources — is an ecosystems services company that acquires highly-degraded land and transforms it in order to reuse it for aquaculture.

Optigon logo

Optigon

Energy & Power

Rapid, contactless characterization for assessing performance during photovoltaic solar cell fabrication

Starfire Energy logo

Starfire Energy

Energy & Power

Hertha Metals Inc. logo

Hertha Metals Inc.

Energy & Power

Pre Framing Corp logo

Pre Framing Corp

Infrastructure & Construction

Exakom logo

Exakom

Manufacturing & Processing

Exakom — is a pioneer in developing innovative data analysis products for the industrial automation market.

ConnectDER logo

ConnectDER

Energy & Power

ConnectDER — unlocks the massive potential of DERs by turning the meter socket into the utility’s all-in-one plug-in point for solar, storage, EVs, and beyond.

CeraPhi Energy logo

CeraPhi Energy

Energy & Power

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

Sparkplug Power logo

Sparkplug Power

Energy & Power

Energy-storage-as-a-service for municipal utilities and commercial businesses

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.

Innoveering logo

Innoveering

Manufacturing & Processing

Carbon Negative Solutions logo

Carbon Negative Solutions

Infrastructure & Construction

FLUIDXLAB Americas Inc. logo

FLUIDXLAB Americas Inc.

Manufacturing & Processing

AI-powered microfluidic tools that help control and improve fluid processes across many industries

Mars Materials logo

Mars Materials

Manufacturing & Processing

Converting CO₂ and biomass into acrylonitrile

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