Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
Opus One Solutions logo

Opus One Solutions

Energy & Power

KP Labs logo

KP Labs

Manufacturing & Processing

Modular, biomembrane-based systems for on-site recovery of critical metals from e-waste and industrial residues

Sora Fuel Corporation logo

Sora Fuel Corporation

Transportation & Logistics

Cost-effective sustainable aviation fuel

Arbor Energy Holdings Inc logo

Arbor Energy Holdings Inc

Energy & Power

Digital-energy platform to help homeowners live more sustainably

Pirl logo

Pirl

Transportation & Logistics

KUBO Greenhouse Projects logo

KUBO Greenhouse Projects

Food, Water, & Land

pH Matter logo

pH Matter

Energy & Power

CeraPhi Energy logo

CeraPhi Energy

Energy & Power

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

Eos Loan logo

Eos Loan

Energy & Power

Puro Renewables logo

Puro Renewables

Manufacturing & Processing

Puro Renewables (Miami Beach, FL) upcycles carbon-negative biowaste for use in reducing the amount of fossil-fuel-based resin and carbon footprint in typical plastic products.

Energy Dome logo

Energy Dome

Energy & Power

EnergyDome — has ideated and patented a revolutionary technology for large-scale and long-duration energy storage: The CO2 Battery.

Inspiralia logo

Inspiralia

Inspiralia — is a New Product Development Service Company which helps their clients raise non-dilutive funding, improve their R&D processes and take over & execute entire R&D activities in their own labs.

SeaSatellites logo

SeaSatellites

Transportation & Logistics

Texas Geothermal Energy Alliance logo

Texas Geothermal Energy Alliance

Energy & Power

Excipio Energy logo

Excipio Energy

Energy & Power

Excipio Energy — is an offshore renewable energy company integrating wind, wave, currents, OTEC, and power-to-fuel in a single floating platform.

InventWood logo

InventWood

Infrastructure & Construction

InventWood — offers MettleWood, a super-strong wood material (that's stronger than steel), a highly insulative wood material (as a green substitute for polystyrene) and even a transparent wood material.

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.

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.

REI logo

REI

Energy & Power

InfiSense logo

InfiSense

Opus One Solutions logo

Opus One Solutions

Energy & Power

KP Labs logo

KP Labs

Manufacturing & Processing

Modular, biomembrane-based systems for on-site recovery of critical metals from e-waste and industrial residues

Sora Fuel Corporation logo

Sora Fuel Corporation

Transportation & Logistics

Cost-effective sustainable aviation fuel

Arbor Energy Holdings Inc logo

Arbor Energy Holdings Inc

Energy & Power

Digital-energy platform to help homeowners live more sustainably

Pirl logo

Pirl

Transportation & Logistics

KUBO Greenhouse Projects logo

KUBO Greenhouse Projects

Food, Water, & Land

pH Matter logo

pH Matter

Energy & Power

CeraPhi Energy logo

CeraPhi Energy

Energy & Power

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

Eos Loan logo

Eos Loan

Energy & Power

Puro Renewables logo

Puro Renewables

Manufacturing & Processing

Puro Renewables (Miami Beach, FL) upcycles carbon-negative biowaste for use in reducing the amount of fossil-fuel-based resin and carbon footprint in typical plastic products.

Energy Dome logo

Energy Dome

Energy & Power

EnergyDome — has ideated and patented a revolutionary technology for large-scale and long-duration energy storage: The CO2 Battery.

Inspiralia logo

Inspiralia

Inspiralia — is a New Product Development Service Company which helps their clients raise non-dilutive funding, improve their R&D processes and take over & execute entire R&D activities in their own labs.

SeaSatellites logo

SeaSatellites

Transportation & Logistics

Texas Geothermal Energy Alliance logo

Texas Geothermal Energy Alliance

Energy & Power

Excipio Energy logo

Excipio Energy

Energy & Power

Excipio Energy — is an offshore renewable energy company integrating wind, wave, currents, OTEC, and power-to-fuel in a single floating platform.

InventWood logo

InventWood

Infrastructure & Construction

InventWood — offers MettleWood, a super-strong wood material (that's stronger than steel), a highly insulative wood material (as a green substitute for polystyrene) and even a transparent wood material.

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.

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.

REI logo

REI

Energy & Power

InfiSense logo

InfiSense

Elios logo

Elios

Energy & Power

Rushnu logo

Rushnu

Manufacturing & Processing

Turns waste into carbon-neutral chemistry

Sense Labs, Inc. logo

Sense Labs, Inc.

Infrastructure & Construction

The Sense Home Energy monitor tells you what devices in your home are on, and how much energy each is consuming.

Tank Utility logo

Tank Utility

Energy & Power

Lumafield logo

Lumafield

Manufacturing & Processing

Lumafield — is making an easy-to-use CT scanner and powerful, cloud-based analysis software that can solve tough engineering challenges at every stage of the product development process.

DirtSat logo

DirtSat

Food, Water, & Land

DirtSat — looks at ways space resources can have profound impacts on some of our planet’s biggest challenges and is reframing urban food production pathways and climate resilience for Smart City adoption.

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.

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.

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

Sofar Ocean logo

Sofar Ocean

Food, Water, & Land

Caravel Bio logo

Caravel Bio

Manufacturing & Processing

OffGridBox logo

OffGridBox

Food, Water, & Land

Carbon Negative Solutions logo

Carbon Negative Solutions

Infrastructure & Construction

Allium Engineering logo

Allium Engineering

Manufacturing & Processing

Allium Engineering — is a US-based startup founded by two MIT Ph.D graduates that designs and manufactures coated rebar technology that will create a more resilient, affordable, and sustainable infrastructure.

sweetgreen logo

sweetgreen

Food, Water, & Land

SmartAC.com logo

SmartAC.com

Infrastructure & Construction

SmartAC.com — is on a mission to perfect the experience of home comfort. The company helps its partners offer next-level service with a more proactive approach to HVAC & plumbing.

Alloy Enterprises logo

Alloy Enterprises

Manufacturing & Processing

Alloy Enterprises — is developing a new manufacturing method to change the way the world makes aluminum parts.

Ebb Carbon logo

Ebb Carbon

Food, Water, & Land

Ebb Carbon — removes atmospheric CO2 and reduces ocean acidification. Using a proprietary electrochemical system to separate acid out of salty water, Ebb de-acidifies the ocean and enhances its natural ability to capture CO2 from the air and store it safely and stably as bicarbonate for at least 10,000 years.

BERKM logo

BERKM

Manufacturing & Processing

Blue Atlas Robotics logo

Blue Atlas Robotics

Manufacturing & Processing

Elios logo

Elios

Energy & Power

Rushnu logo

Rushnu

Manufacturing & Processing

Turns waste into carbon-neutral chemistry

Sense Labs, Inc. logo

Sense Labs, Inc.

Infrastructure & Construction

The Sense Home Energy monitor tells you what devices in your home are on, and how much energy each is consuming.

Tank Utility logo

Tank Utility

Energy & Power

Lumafield logo

Lumafield

Manufacturing & Processing

Lumafield — is making an easy-to-use CT scanner and powerful, cloud-based analysis software that can solve tough engineering challenges at every stage of the product development process.

DirtSat logo

DirtSat

Food, Water, & Land

DirtSat — looks at ways space resources can have profound impacts on some of our planet’s biggest challenges and is reframing urban food production pathways and climate resilience for Smart City adoption.

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.

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.

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

Sofar Ocean logo

Sofar Ocean

Food, Water, & Land

Caravel Bio logo

Caravel Bio

Manufacturing & Processing

OffGridBox logo

OffGridBox

Food, Water, & Land

Carbon Negative Solutions logo

Carbon Negative Solutions

Infrastructure & Construction

Allium Engineering logo

Allium Engineering

Manufacturing & Processing

Allium Engineering — is a US-based startup founded by two MIT Ph.D graduates that designs and manufactures coated rebar technology that will create a more resilient, affordable, and sustainable infrastructure.

sweetgreen logo

sweetgreen

Food, Water, & Land

SmartAC.com logo

SmartAC.com

Infrastructure & Construction

SmartAC.com — is on a mission to perfect the experience of home comfort. The company helps its partners offer next-level service with a more proactive approach to HVAC & plumbing.

Alloy Enterprises logo

Alloy Enterprises

Manufacturing & Processing

Alloy Enterprises — is developing a new manufacturing method to change the way the world makes aluminum parts.

Ebb Carbon logo

Ebb Carbon

Food, Water, & Land

Ebb Carbon — removes atmospheric CO2 and reduces ocean acidification. Using a proprietary electrochemical system to separate acid out of salty water, Ebb de-acidifies the ocean and enhances its natural ability to capture CO2 from the air and store it safely and stably as bicarbonate for at least 10,000 years.

BERKM logo

BERKM

Manufacturing & Processing

Blue Atlas Robotics logo

Blue Atlas Robotics

Manufacturing & Processing

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