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

Stepwise logo

Stepwise

Energy & Power

Stepwise — makes home electrification effortless and affordable by reducing the infrastructure upgrades costs associated with installations and helping homeowners save money on their electricity bills through energy management.

NOC Energy logo

NOC Energy

Energy & Power

Decarbonizing industrial heat with power-to-heat and power-to-power solutions

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.

FLITE Material Sciences logo

FLITE Material Sciences

Manufacturing & Processing

Revora Materials logo

Revora Materials

Energy & Power

Carbon-mineralization technology with high-value minerals and metals recovery

REVOLUTION Turbine Technologies logo

REVOLUTION Turbine Technologies

Energy & Power

REVOLUTION Turbine Technologies (RTT) — is the clean energy partner for oil & gas operators ready to leverage smart waste-energy recovery to generate emission-free power for remote operations. RTT is meeting the most demanding power generation challenges of today and tomorrow with a highly experienced team of entrepreneurs, technology developers, and innovators.

Overstory logo

Overstory

Food, Water, & Land

Minimizing vegetation contact with power lines using satellite imagery, climate data, and machine learning

Circularise logo

Circularise

Manufacturing & Processing

enaDyne logo

enaDyne

Manufacturing & Processing

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

OpConnect logo

OpConnect

Transportation & Logistics

OpConnect — is an EV charger company that provides charging station hardware, software, and operating services. Their cloud-based software platform provides energy management, payment processing, scheduling and maintenance tickets, and support services for users.

Parasanti logo

Parasanti

Parasanti — is a data orchestration/edge computing firm, specializing in extreme operating environments within both the federal space and advanced energy solutions.

CemCycle logo

CemCycle

Manufacturing & Processing

Powerhouse Ventures logo

Powerhouse Ventures

Infrastructure & Construction

Investing in software to advance clean energy, mobility, and industry

SolarFi logo

SolarFi

Energy & Power

Privé is a unique and blissful experience for social-distanced gathering in a transparent house that combines the arts, renewable energy, and sustainability.

GreenLIB logo

GreenLIB

Manufacturing & Processing

Singularity Energy logo

Singularity Energy

Energy & Power

Data and software solutions for grid decarbonization

Full Cycle Bioplastics logo

Full Cycle Bioplastics

Manufacturing & Processing

XMtrace logo

XMtrace

Manufacturing & Processing

Low-cost methane monitoring with real-time detection and autonomous response

ALGBIO logo

ALGBIO

Manufacturing & Processing

ALGBIO — treats wastewater and captures CO2 with microalgae to produce biofuels, bioplastics, biomaterials and generate carbon credits.

Verdicity logo

Verdicity

Infrastructure & Construction

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

Stepwise logo

Stepwise

Energy & Power

Stepwise — makes home electrification effortless and affordable by reducing the infrastructure upgrades costs associated with installations and helping homeowners save money on their electricity bills through energy management.

NOC Energy logo

NOC Energy

Energy & Power

Decarbonizing industrial heat with power-to-heat and power-to-power solutions

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.

FLITE Material Sciences logo

FLITE Material Sciences

Manufacturing & Processing

Revora Materials logo

Revora Materials

Energy & Power

Carbon-mineralization technology with high-value minerals and metals recovery

REVOLUTION Turbine Technologies logo

REVOLUTION Turbine Technologies

Energy & Power

REVOLUTION Turbine Technologies (RTT) — is the clean energy partner for oil & gas operators ready to leverage smart waste-energy recovery to generate emission-free power for remote operations. RTT is meeting the most demanding power generation challenges of today and tomorrow with a highly experienced team of entrepreneurs, technology developers, and innovators.

Overstory logo

Overstory

Food, Water, & Land

Minimizing vegetation contact with power lines using satellite imagery, climate data, and machine learning

Circularise logo

Circularise

Manufacturing & Processing

enaDyne logo

enaDyne

Manufacturing & Processing

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

OpConnect logo

OpConnect

Transportation & Logistics

OpConnect — is an EV charger company that provides charging station hardware, software, and operating services. Their cloud-based software platform provides energy management, payment processing, scheduling and maintenance tickets, and support services for users.

Parasanti logo

Parasanti

Parasanti — is a data orchestration/edge computing firm, specializing in extreme operating environments within both the federal space and advanced energy solutions.

CemCycle logo

CemCycle

Manufacturing & Processing

Powerhouse Ventures logo

Powerhouse Ventures

Infrastructure & Construction

Investing in software to advance clean energy, mobility, and industry

SolarFi logo

SolarFi

Energy & Power

Privé is a unique and blissful experience for social-distanced gathering in a transparent house that combines the arts, renewable energy, and sustainability.

GreenLIB logo

GreenLIB

Manufacturing & Processing

Singularity Energy logo

Singularity Energy

Energy & Power

Data and software solutions for grid decarbonization

Full Cycle Bioplastics logo

Full Cycle Bioplastics

Manufacturing & Processing

XMtrace logo

XMtrace

Manufacturing & Processing

Low-cost methane monitoring with real-time detection and autonomous response

ALGBIO logo

ALGBIO

Manufacturing & Processing

ALGBIO — treats wastewater and captures CO2 with microalgae to produce biofuels, bioplastics, biomaterials and generate carbon credits.

CF Tech logo

CF Tech

Energy & Power

CF Technologies — are experts in Critical Fluid processes turning rancid restaurant and sewer trap grease into advanced renewable fuel.

Pika Energy logo

Pika Energy

Energy & Power

Revvit logo

Revvit

Infrastructure & Construction

Low-cost, simple EV charging at commercial, multifamily, fleet parking, and public properties

Advent Technologies logo

Advent Technologies

Energy & Power

Advent Technologies — makes ht-pem fuel cells that convert hydrogen and other renewable fuels to electricity. This platform technology that addresses needs in numerous markets, including passenger, commercial vehicle, and lightweight aviation (eVTOL).

Phoenix Tailings logo

Phoenix Tailings

Manufacturing & Processing

Waste-free, net-zero, cost-competitive rare-earth-metal refining

Interface Polymers logo

Interface Polymers

Manufacturing & Processing

Geokiln Energy Innovation logo

Geokiln Energy Innovation

Energy & Power

Breakthrough low-cost, low-carbon hydrogen production approach that accelerates natural subsurface mineral reactions

Coflux Purification, Inc logo

Coflux Purification, Inc

Food, Water, & Land

A modular, on-site water treatment system eliminating persistent contaminants from water and industrial waste streams

Mithril Technologies logo

Mithril Technologies

Infrastructure & Construction

Reshapable reflectors for advanced antennas & radars for space-based earth and severe weather monitoring

ZS2 Technologies logo

ZS2 Technologies

Manufacturing & Processing

ZS2 Technologies (Calgary, AB) creates magnesium-based advanced building products that can store up to 20 wt.% CO2 from proprietary carbon capture technology.

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.

Axiom Optics logo

Axiom Optics

Manufacturing & Processing

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

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.

Circe Bioscience logo

Circe Bioscience

Food, Water, & Land

Circe Industries circularizes industries with cellular factories.

Applied Bioplastics logo

Applied Bioplastics

Food, Water, & Land

Applied Bioplastics — is commercializing plant-based polymers that are far healthier and more sustainable, at competitive pricing to their petrochemical-based analogues

Catalyxx logo

Catalyxx

Manufacturing & Processing

Catalytic tech to turn bio-ethanol into high-value, carbon-negative chemicals

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.

CERT Systems logo

CERT Systems

Manufacturing & Processing

Upgraid logo

Upgraid

Infrastructure & Construction

AI and satellite data that diagnose buildings and run energy simulations, to produce ready-to-pitch upgrade proposals

Moment Energy logo

Moment Energy

Energy & Power

CF Tech logo

CF Tech

Energy & Power

CF Technologies — are experts in Critical Fluid processes turning rancid restaurant and sewer trap grease into advanced renewable fuel.

Pika Energy logo

Pika Energy

Energy & Power

Revvit logo

Revvit

Infrastructure & Construction

Low-cost, simple EV charging at commercial, multifamily, fleet parking, and public properties

Advent Technologies logo

Advent Technologies

Energy & Power

Advent Technologies — makes ht-pem fuel cells that convert hydrogen and other renewable fuels to electricity. This platform technology that addresses needs in numerous markets, including passenger, commercial vehicle, and lightweight aviation (eVTOL).

Phoenix Tailings logo

Phoenix Tailings

Manufacturing & Processing

Waste-free, net-zero, cost-competitive rare-earth-metal refining

Interface Polymers logo

Interface Polymers

Manufacturing & Processing

Geokiln Energy Innovation logo

Geokiln Energy Innovation

Energy & Power

Breakthrough low-cost, low-carbon hydrogen production approach that accelerates natural subsurface mineral reactions

Coflux Purification, Inc logo

Coflux Purification, Inc

Food, Water, & Land

A modular, on-site water treatment system eliminating persistent contaminants from water and industrial waste streams

Mithril Technologies logo

Mithril Technologies

Infrastructure & Construction

Reshapable reflectors for advanced antennas & radars for space-based earth and severe weather monitoring

ZS2 Technologies logo

ZS2 Technologies

Manufacturing & Processing

ZS2 Technologies (Calgary, AB) creates magnesium-based advanced building products that can store up to 20 wt.% CO2 from proprietary carbon capture technology.

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.

Axiom Optics logo

Axiom Optics

Manufacturing & Processing

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

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.

Circe Bioscience logo

Circe Bioscience

Food, Water, & Land

Circe Industries circularizes industries with cellular factories.

Applied Bioplastics logo

Applied Bioplastics

Food, Water, & Land

Applied Bioplastics — is commercializing plant-based polymers that are far healthier and more sustainable, at competitive pricing to their petrochemical-based analogues

Catalyxx logo

Catalyxx

Manufacturing & Processing

Catalytic tech to turn bio-ethanol into high-value, carbon-negative chemicals

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.

CERT Systems logo

CERT Systems

Manufacturing & Processing

Upgraid logo

Upgraid

Infrastructure & Construction

AI and satellite data that diagnose buildings and run energy simulations, to produce ready-to-pitch upgrade proposals

Moment Energy logo

Moment Energy

Energy & Power

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