Helping climatetech startupsTransformindustry faster

Bevi
Food, Water, & Land

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
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.
Energy & Power

LOCOAL
Manufacturing & Processing
Turning waste into value, and producing clean energy, biofuels, and carbon credits

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
Manufacturing & Processing

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

OffGridBox
Food, Water, & Land

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

Dandelion Energy
Infrastructure & Construction
Geothermal heating and cooling systems for homes

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

Ardent Process Technologies
Energy & Power

Mocean Energy
Energy & Power
Hybrid-offshore renewable power stations, combining wave, solar, and battery systems

Vecarius
Infrastructure & Construction
Heat-to-electricity technology to boost energy efficiency in mass markets

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

Decimetrix
Energy & Power
AI platform to help clients measure their carbon footprint

ThermaFuels
Transportation & Logistics
Deploying scalable, financeable low-carbon methanol and sustainable fuel infrastructure

Bevi
Food, Water, & Land

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
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.
Energy & Power

LOCOAL
Manufacturing & Processing
Turning waste into value, and producing clean energy, biofuels, and carbon credits

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
Manufacturing & Processing

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

OffGridBox
Food, Water, & Land

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

Dandelion Energy
Infrastructure & Construction
Geothermal heating and cooling systems for homes

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

Ardent Process Technologies
Energy & Power

Mocean Energy
Energy & Power
Hybrid-offshore renewable power stations, combining wave, solar, and battery systems

Vecarius
Infrastructure & Construction
Heat-to-electricity technology to boost energy efficiency in mass markets

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

Decimetrix
Energy & Power
AI platform to help clients measure their carbon footprint

ThermaFuels
Transportation & Logistics
Deploying scalable, financeable low-carbon methanol and sustainable fuel infrastructure

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
Energy & Power
Membrane-based technology that taps into osmotic power

Open Ocean Robotics
Energy & Power

GreenChoice
Food, Water, & Land

American Battery Technology Company
Energy & Power
Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company

NONA Technologies
Food, Water, & Land
Desalinating brackish water with 60% less electricity, fewer chemical inputs, and less downtime

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

Starfire Energy
Energy & Power

Hertha Metals Inc.
Energy & Power

Pre Framing Corp
Infrastructure & Construction

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

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

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

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
Manufacturing & Processing

Carbon Negative Solutions
Infrastructure & Construction

FLUIDXLAB Americas Inc.
Manufacturing & Processing
AI-powered microfluidic tools that help control and improve fluid processes across many industries

Mars Materials
Manufacturing & Processing
Converting CO₂ and biomass into acrylonitrile

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
Energy & Power
Membrane-based technology that taps into osmotic power

Open Ocean Robotics
Energy & Power

GreenChoice
Food, Water, & Land

American Battery Technology Company
Energy & Power
Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company

NONA Technologies
Food, Water, & Land
Desalinating brackish water with 60% less electricity, fewer chemical inputs, and less downtime

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

Starfire Energy
Energy & Power

Hertha Metals Inc.
Energy & Power

Pre Framing Corp
Infrastructure & Construction

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

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

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

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
Manufacturing & Processing

Carbon Negative Solutions
Infrastructure & Construction

FLUIDXLAB Americas Inc.
Manufacturing & Processing
AI-powered microfluidic tools that help control and improve fluid processes across many industries

Mars Materials
Manufacturing & Processing
Converting CO₂ and biomass into acrylonitrile




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.


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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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