Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
Mission Zero Technologies logo

Mission Zero Technologies

Manufacturing & Processing

Efficient electrochemistry to capture CO₂

Salient Predictions logo

Salient Predictions

Food, Water, & Land

Salient Predictions uses ocean data and machine learning to provide the world's most accurate weather forecasts from 3 weeks to 9 months out, enabling climate change resiliency and mitigation within industry.

Trillium Brewing Company logo

Trillium Brewing Company

Food, Water, & Land

Universal Matter Inc. logo

Universal Matter Inc.

Manufacturing & Processing

Producing graphene from carbon waste streams

Biko Biolabs logo

Biko Biolabs

Manufacturing & Processing

Biko Biolabs — is developing a platform technology that will empower marginalized or under-resourced communities to solve problems at the local scale. Their first project is a plastic-to-soil technology, a technique for breaking down plastic waste into valuable compost. This allows the community to avoid landfilling, incinerating, or littering the plastic, while also supporting a circular economy and turning the waste into a valuable product.

KP Labs logo

KP Labs

Manufacturing & Processing

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

Innoveering logo

Innoveering

Manufacturing & Processing

PURGIT logo

PURGIT

Transportation & Logistics

Build a verifiable vapor control system that makes no pollution and recovers the VOC for recycling. Reduce air pollution and claim carbon credits.

Nfinite Nanotech logo

Nfinite Nanotech

Manufacturing & Processing

Building Envelope Materials logo

Building Envelope Materials

Infrastructure & Construction

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.

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.

Biobot Analytics logo

Biobot Analytics

Food, Water, & Land

Earthbond logo

Earthbond

Energy & Power

Earthbond — is a platform that connects urban Nigerians with affordable financing for clean, reliable energy. They leverage group financing and carbon accounting to lower costs and risk in the energy transition of Nigeria’s $14B fuel-based, off-grid generator market.

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.

AIRCO logo

AIRCO

Energy & Power

9T Labs logo

9T Labs

Manufacturing & Processing

Black Mountain Metals logo

Black Mountain Metals

Manufacturing & Processing

Black Mountain Metals is a global battery metals mining company, specifically focused on sustainable nickel and copper mining for lithium ion battery cathodes.

Corumat logo

Corumat

Manufacturing & Processing

Skylark Wireless logo

Skylark Wireless

Manufacturing & Processing

Far more than 5G: Skylark builds affordable, long-range, and high-speed wireless systems for rural broadband providers.

Mission Zero Technologies logo

Mission Zero Technologies

Manufacturing & Processing

Efficient electrochemistry to capture CO₂

Salient Predictions logo

Salient Predictions

Food, Water, & Land

Salient Predictions uses ocean data and machine learning to provide the world's most accurate weather forecasts from 3 weeks to 9 months out, enabling climate change resiliency and mitigation within industry.

Trillium Brewing Company logo

Trillium Brewing Company

Food, Water, & Land

Universal Matter Inc. logo

Universal Matter Inc.

Manufacturing & Processing

Producing graphene from carbon waste streams

Biko Biolabs logo

Biko Biolabs

Manufacturing & Processing

Biko Biolabs — is developing a platform technology that will empower marginalized or under-resourced communities to solve problems at the local scale. Their first project is a plastic-to-soil technology, a technique for breaking down plastic waste into valuable compost. This allows the community to avoid landfilling, incinerating, or littering the plastic, while also supporting a circular economy and turning the waste into a valuable product.

KP Labs logo

KP Labs

Manufacturing & Processing

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

Innoveering logo

Innoveering

Manufacturing & Processing

PURGIT logo

PURGIT

Transportation & Logistics

Build a verifiable vapor control system that makes no pollution and recovers the VOC for recycling. Reduce air pollution and claim carbon credits.

Nfinite Nanotech logo

Nfinite Nanotech

Manufacturing & Processing

Building Envelope Materials logo

Building Envelope Materials

Infrastructure & Construction

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.

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.

Biobot Analytics logo

Biobot Analytics

Food, Water, & Land

Earthbond logo

Earthbond

Energy & Power

Earthbond — is a platform that connects urban Nigerians with affordable financing for clean, reliable energy. They leverage group financing and carbon accounting to lower costs and risk in the energy transition of Nigeria’s $14B fuel-based, off-grid generator market.

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.

AIRCO logo

AIRCO

Energy & Power

9T Labs logo

9T Labs

Manufacturing & Processing

Black Mountain Metals logo

Black Mountain Metals

Manufacturing & Processing

Black Mountain Metals is a global battery metals mining company, specifically focused on sustainable nickel and copper mining for lithium ion battery cathodes.

Corumat logo

Corumat

Manufacturing & Processing

Skylark Wireless logo

Skylark Wireless

Manufacturing & Processing

Far more than 5G: Skylark builds affordable, long-range, and high-speed wireless systems for rural broadband providers.

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.

Energetic Insurance logo

Energetic Insurance

Energy & Power

Unlocking solar financing for unrated or below investment grade organizations.

Sunforge logo

Sunforge

Energy & Power

Sunforge — creates advanced Maximum Power Point Tracking (MPPT) solar charge controllers for off-grid applications. Its controllers are designed to extract the most power possible from your solar panels and maximize system up-time through the worst conditions.

Invested Development logo

Invested Development

Food, Water, & Land

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.

FLITE Material Sciences logo

FLITE Material Sciences

Manufacturing & Processing

Top Grain Technologies logo

Top Grain Technologies

Energy & Power

Top Grain Technologies — is commercializing a scalable high-throughput heat treatment solution that imparts a directionally solidified grain structure to additively manufactured (AM) Ni-base superalloys, enabling their use in the most demanding high-temperature applications, from combustion turbines to rocket engines

ONEPREDICT logo

ONEPREDICT

Manufacturing & Processing

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

Salient Energy logo

Salient Energy

Energy & Power

Carbonova logo

Carbonova

Manufacturing & Processing

Carbonova has a unique solution to solidify carbon emissions and lock them permanently in solid carbon nanofibers. To date, 2980 businesses and financial institutions are taking action toward net-zero emissions by 2040 working with the Science-Based Targets initiative (SBTi). Our solution monetizes carbon emissions into solid carbon for our everyday products such as building materials and plastics. Currently solid carbon is extracted from naturally occurring and confined resources such as graphite or oils.

Energiency logo

Energiency

Manufacturing & Processing

GreenIRR logo

GreenIRR

Transportation & Logistics

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.

EcoForge logo

EcoForge

Food, Water, & Land

-- is a building material technology company developing affordable, high-performance building materials from local agricultural residues, replacing energy-intensive, fossil-based materials. This sustainable approach increases resilience to climate and supply chain risks, supports local farming, and job creation. Moreover, EcoForge’s toxic chemical-free material recipe promotes healthier indoor environments.

Trace Matters logo

Trace Matters

Manufacturing & Processing

Trace Matters — is a technology startup focused on developing the next generation of mass spectrometry technologies for a variety of demanding applications. Trace Matters’ technologies include innovative mass spectrometry hardware, methods, and applications to solve the most demanding mass spectrometry analysis needs in various industries.

Save Energy Systems logo

Save Energy Systems

Infrastructure & Construction

Sofar Ocean logo

Sofar Ocean

Food, Water, & Land

Ardent Process Technologies logo

Ardent Process Technologies

Energy & Power

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.

Electrona Robotics logo

Electrona Robotics

Manufacturing & Processing

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.

Energetic Insurance logo

Energetic Insurance

Energy & Power

Unlocking solar financing for unrated or below investment grade organizations.

Sunforge logo

Sunforge

Energy & Power

Sunforge — creates advanced Maximum Power Point Tracking (MPPT) solar charge controllers for off-grid applications. Its controllers are designed to extract the most power possible from your solar panels and maximize system up-time through the worst conditions.

Invested Development logo

Invested Development

Food, Water, & Land

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.

FLITE Material Sciences logo

FLITE Material Sciences

Manufacturing & Processing

Top Grain Technologies logo

Top Grain Technologies

Energy & Power

Top Grain Technologies — is commercializing a scalable high-throughput heat treatment solution that imparts a directionally solidified grain structure to additively manufactured (AM) Ni-base superalloys, enabling their use in the most demanding high-temperature applications, from combustion turbines to rocket engines

ONEPREDICT logo

ONEPREDICT

Manufacturing & Processing

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

Salient Energy logo

Salient Energy

Energy & Power

Carbonova logo

Carbonova

Manufacturing & Processing

Carbonova has a unique solution to solidify carbon emissions and lock them permanently in solid carbon nanofibers. To date, 2980 businesses and financial institutions are taking action toward net-zero emissions by 2040 working with the Science-Based Targets initiative (SBTi). Our solution monetizes carbon emissions into solid carbon for our everyday products such as building materials and plastics. Currently solid carbon is extracted from naturally occurring and confined resources such as graphite or oils.

Energiency logo

Energiency

Manufacturing & Processing

GreenIRR logo

GreenIRR

Transportation & Logistics

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.

EcoForge logo

EcoForge

Food, Water, & Land

-- is a building material technology company developing affordable, high-performance building materials from local agricultural residues, replacing energy-intensive, fossil-based materials. This sustainable approach increases resilience to climate and supply chain risks, supports local farming, and job creation. Moreover, EcoForge’s toxic chemical-free material recipe promotes healthier indoor environments.

Trace Matters logo

Trace Matters

Manufacturing & Processing

Trace Matters — is a technology startup focused on developing the next generation of mass spectrometry technologies for a variety of demanding applications. Trace Matters’ technologies include innovative mass spectrometry hardware, methods, and applications to solve the most demanding mass spectrometry analysis needs in various industries.

Save Energy Systems logo

Save Energy Systems

Infrastructure & Construction

Sofar Ocean logo

Sofar Ocean

Food, Water, & Land

Ardent Process Technologies logo

Ardent Process Technologies

Energy & Power

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.

Electrona Robotics logo

Electrona 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