Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
Innovator Energy logo

Innovator Energy

Energy & Power

Developing and deploying solutions in cooling, heating, and heat transfer

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.

Solarflux logo

Solarflux

Energy & Power

SolarFlux — makes the FOCUS, a parabolic dish concentrator capable of delivering flexible, clean, inexpensive solar thermal power for a wide range of applications.

Solomon Group logo

Solomon Group

Energy & Power

Solomon Group LLC — delivers solutions for engaging diverse communities, whether urban or rural, with workforce development, language access planning and energy efficiency infrastructure solutions in order to drive understanding and adoption of clean energy and energy-efficiency benefits and opportunities available to the general public.

Reverse Energy Solutions logo

Reverse Energy Solutions

Transportation & Logistics

Our startup implements innovative mobile solutions for solar panel recycling, drastically reducing logistic costs by 90% through streamlined collection and transportation processes.

Black Girls Do Engineer logo

Black Girls Do Engineer

Manufacturing & Processing

Black Girls Do Engineer Corporation - provides girls and young women ages 6 to 21 with mentoring, personal growth regimens, STEM projects and activities, STEM challenges, and guidance on career paths based on insight from professionals that are leaders in the STEM industry. The goal is to provide access, awareness, and advocate for two million Black-American girls to pursue STEM careers by the year 2050. The organization was created with the concern that Black-American girls and young women are not choosing STEM related careers, and their passion is to change the narrative and fix this issue.

Celadyne logo

Celadyne

Energy & Power

CarbonBlue logo

CarbonBlue

Food, Water, & Land

WeaveGrid logo

WeaveGrid

Energy & Power

WeaveGrid — is a software company that enables wide scale electric vehicle adoption by solving one of the most critical emerging electrification challenges — connecting a growing wave of electric vehicles to an electric grid that was not designed to support the high power needs of widespread charging.

Mitico logo

Mitico

Energy & Power

C-Quester delivers a solution for carbon capture using dry granular metal carbonate (GMC) purification technology with integrated measurement, reporting, and verification.

SkyH2O logo

SkyH2O

Food, Water, & Land

Atmospheric water generation for commercial and government projects

Energetic Insurance logo

Energetic Insurance

Energy & Power

Unlocking solar financing for unrated or below investment grade organizations.

Helix Power logo

Helix Power

Energy & Power

Helix Power — is a developer of grid scale high power energy storage and power management systems. Their 1MW flywheel is designed for high-power, high-cycle, long-life applications such as metro rail and microgrids.

Rushnu logo

Rushnu

Manufacturing & Processing

Turns waste into carbon-neutral chemistry

A&I Power Group logo

A&I Power Group

Energy & Power

Electricity-generation systems that convert electromagnetic energy into electrical potential

Cala Systems logo

Cala Systems

Energy & Power

Intelligent heat-pump water heaters

Reframe Systems logo

Reframe Systems

Infrastructure & Construction

Offsite construction of zero-carbon buildings with volumetric modules manufactured with robotic microfactories

Adiabatic Materials logo

Adiabatic Materials

Manufacturing & Processing

Unlocking clean, affordable chemical production with electricity

Maple Materials logo

Maple Materials

Manufacturing & Processing

Maple Materials (Richmond, California, U.S.) develops an electrolysis process to convert CO2 into graphite and oxygen.

Sensible logo

Sensible

Energy & Power

Compact, refrigerant-free thermoelectric heat pump for quiet, efficient, climate-neutral HVAC

Innovator Energy logo

Innovator Energy

Energy & Power

Developing and deploying solutions in cooling, heating, and heat transfer

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.

Solarflux logo

Solarflux

Energy & Power

SolarFlux — makes the FOCUS, a parabolic dish concentrator capable of delivering flexible, clean, inexpensive solar thermal power for a wide range of applications.

Solomon Group logo

Solomon Group

Energy & Power

Solomon Group LLC — delivers solutions for engaging diverse communities, whether urban or rural, with workforce development, language access planning and energy efficiency infrastructure solutions in order to drive understanding and adoption of clean energy and energy-efficiency benefits and opportunities available to the general public.

Reverse Energy Solutions logo

Reverse Energy Solutions

Transportation & Logistics

Our startup implements innovative mobile solutions for solar panel recycling, drastically reducing logistic costs by 90% through streamlined collection and transportation processes.

Black Girls Do Engineer logo

Black Girls Do Engineer

Manufacturing & Processing

Black Girls Do Engineer Corporation - provides girls and young women ages 6 to 21 with mentoring, personal growth regimens, STEM projects and activities, STEM challenges, and guidance on career paths based on insight from professionals that are leaders in the STEM industry. The goal is to provide access, awareness, and advocate for two million Black-American girls to pursue STEM careers by the year 2050. The organization was created with the concern that Black-American girls and young women are not choosing STEM related careers, and their passion is to change the narrative and fix this issue.

Celadyne logo

Celadyne

Energy & Power

CarbonBlue logo

CarbonBlue

Food, Water, & Land

WeaveGrid logo

WeaveGrid

Energy & Power

WeaveGrid — is a software company that enables wide scale electric vehicle adoption by solving one of the most critical emerging electrification challenges — connecting a growing wave of electric vehicles to an electric grid that was not designed to support the high power needs of widespread charging.

Mitico logo

Mitico

Energy & Power

C-Quester delivers a solution for carbon capture using dry granular metal carbonate (GMC) purification technology with integrated measurement, reporting, and verification.

SkyH2O logo

SkyH2O

Food, Water, & Land

Atmospheric water generation for commercial and government projects

Energetic Insurance logo

Energetic Insurance

Energy & Power

Unlocking solar financing for unrated or below investment grade organizations.

Helix Power logo

Helix Power

Energy & Power

Helix Power — is a developer of grid scale high power energy storage and power management systems. Their 1MW flywheel is designed for high-power, high-cycle, long-life applications such as metro rail and microgrids.

Rushnu logo

Rushnu

Manufacturing & Processing

Turns waste into carbon-neutral chemistry

A&I Power Group logo

A&I Power Group

Energy & Power

Electricity-generation systems that convert electromagnetic energy into electrical potential

Cala Systems logo

Cala Systems

Energy & Power

Intelligent heat-pump water heaters

Reframe Systems logo

Reframe Systems

Infrastructure & Construction

Offsite construction of zero-carbon buildings with volumetric modules manufactured with robotic microfactories

Adiabatic Materials logo

Adiabatic Materials

Manufacturing & Processing

Unlocking clean, affordable chemical production with electricity

Maple Materials logo

Maple Materials

Manufacturing & Processing

Maple Materials (Richmond, California, U.S.) develops an electrolysis process to convert CO2 into graphite and oxygen.

Sensible logo

Sensible

Energy & Power

Compact, refrigerant-free thermoelectric heat pump for quiet, efficient, climate-neutral HVAC

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.

Prime Lightworks logo

Prime Lightworks

Energy & Power

Prime Lightworks — makes breakthrough electric propulsion systems for space satellites that are solar-powered, fully renewable, and consume zero fuel. The company’s goal is to eliminate fuel emissions from space propulsion while drastically reducing cost and waste.

INpower logo

INpower

INpower — is a specialty insurance brokerage & risk management firm that knows that business innovation generates risk. Their risk management mission is simple: to provide their clients with deep insurance expertise, thoughtful enterprise risk management counsel, and fierce claims advocacy supported by offices in: Houston, Boston and Irvine, California.

Full Cycle Bioplastics logo

Full Cycle Bioplastics

Manufacturing & Processing

Active Surfaces logo

Active Surfaces

Energy & Power

Flexible, lightweight solar panels that turn any surface into solar

Terralytiq logo

Terralytiq

Manufacturing & Processing

Digital models that deliver Scope 3 hotspots, actionable initiatives, and supplier engagement to cut cost and carbon

Dsider logo

Dsider

Energy & Power

SaaS platform to accelerate the expansion of energy-transition projects

Maxwellian logo

Maxwellian

Energy & Power

Maxwellian — empowers mobility, energy, and agricultural industries by providing autonomous sanitization and monitoring solutions using unique optical IoT technology to ensure data accessibility for safety and asset management.

Verdicity logo

Verdicity

Infrastructure & Construction

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

Searover Robotics and Software logo

Searover Robotics and Software

Manufacturing & Processing

Acelerex logo

Acelerex

Energy & Power

Acelerex — is a pioneer in providing SaaS-based solutions to the challenges of integrating renewables, energy storage and electric vehicles into the 21st century power grid.

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.

Beantrust logo

Beantrust

Food, Water, & Land

ONEPREDICT logo

ONEPREDICT

Manufacturing & Processing

Predicting and diagnosing the status of key industrial assets for the energy and manufacturing industries

Infinite Cooling logo

Infinite Cooling

Infrastructure & Construction

Infinite Cooling — reduces water consumption in industrial plants by capturing cooling tower plumes. The company has a patent-pending technology developed at MIT that uses electric fields to capture water from the plumes leaving cooling towers.

PolyJoule logo

PolyJoule

Energy & Power

PolyJoule — develops low-cost, high-power energy storage designed to strengthen the power grid.

InnoSepra logo

InnoSepra

Energy & Power

Boronite logo

Boronite

Manufacturing & Processing

Octavia Carbon Co logo

Octavia Carbon Co

Manufacturing & Processing

Geothermal heat to capture and mineralize CO₂

SensorEra logo

SensorEra

Food, Water, & Land

SensorEra — provides real time induced seismic monitoring service for unconventional oil and gas production, salt water disposal and carbon injection and sequestration for CCUS.

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.

Prime Lightworks logo

Prime Lightworks

Energy & Power

Prime Lightworks — makes breakthrough electric propulsion systems for space satellites that are solar-powered, fully renewable, and consume zero fuel. The company’s goal is to eliminate fuel emissions from space propulsion while drastically reducing cost and waste.

INpower logo

INpower

INpower — is a specialty insurance brokerage & risk management firm that knows that business innovation generates risk. Their risk management mission is simple: to provide their clients with deep insurance expertise, thoughtful enterprise risk management counsel, and fierce claims advocacy supported by offices in: Houston, Boston and Irvine, California.

Full Cycle Bioplastics logo

Full Cycle Bioplastics

Manufacturing & Processing

Active Surfaces logo

Active Surfaces

Energy & Power

Flexible, lightweight solar panels that turn any surface into solar

Terralytiq logo

Terralytiq

Manufacturing & Processing

Digital models that deliver Scope 3 hotspots, actionable initiatives, and supplier engagement to cut cost and carbon

Dsider logo

Dsider

Energy & Power

SaaS platform to accelerate the expansion of energy-transition projects

Maxwellian logo

Maxwellian

Energy & Power

Maxwellian — empowers mobility, energy, and agricultural industries by providing autonomous sanitization and monitoring solutions using unique optical IoT technology to ensure data accessibility for safety and asset management.

Verdicity logo

Verdicity

Infrastructure & Construction

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

Searover Robotics and Software logo

Searover Robotics and Software

Manufacturing & Processing

Acelerex logo

Acelerex

Energy & Power

Acelerex — is a pioneer in providing SaaS-based solutions to the challenges of integrating renewables, energy storage and electric vehicles into the 21st century power grid.

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.

Beantrust logo

Beantrust

Food, Water, & Land

ONEPREDICT logo

ONEPREDICT

Manufacturing & Processing

Predicting and diagnosing the status of key industrial assets for the energy and manufacturing industries

Infinite Cooling logo

Infinite Cooling

Infrastructure & Construction

Infinite Cooling — reduces water consumption in industrial plants by capturing cooling tower plumes. The company has a patent-pending technology developed at MIT that uses electric fields to capture water from the plumes leaving cooling towers.

PolyJoule logo

PolyJoule

Energy & Power

PolyJoule — develops low-cost, high-power energy storage designed to strengthen the power grid.

InnoSepra logo

InnoSepra

Energy & Power

Boronite logo

Boronite

Manufacturing & Processing

Octavia Carbon Co logo

Octavia Carbon Co

Manufacturing & Processing

Geothermal heat to capture and mineralize CO₂

SensorEra logo

SensorEra

Food, Water, & Land

SensorEra — provides real time induced seismic monitoring service for unconventional oil and gas production, salt water disposal and carbon injection and sequestration for CCUS.

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