Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
FLITE Material Sciences logo

FLITE Material Sciences

Manufacturing & Processing

Aelun logo

Aelun

Quantum Diamond Technologies logo

Quantum Diamond Technologies

Manufacturing & Processing

WindRays Energy LLC logo

WindRays Energy LLC

Energy & Power

WindRays Energy LLC — develops new models of wind energy designs to make widespread implementation in densely populated areas more efficient and profitable.

ONEPREDICT logo

ONEPREDICT

Manufacturing & Processing

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

Stash Energy logo

Stash Energy

Energy & Power

Stash Energy makes home heating and cooling affordable and sustainable with the first smart heat pump with built-in thermal energy storage.

Osmoses logo

Osmoses

Manufacturing & Processing

Osmoses — develops advanced membrane technology for efficient gas and vapor separations.

Julius Education logo

Julius Education

Infrastructure & Construction

Helping green organizations manage the changing workforce through an experience platform for job-seekers

Diffraqtion logo

Diffraqtion

Manufacturing & Processing

Machine Vision at the Quantum Limit

Revvit logo

Revvit

Infrastructure & Construction

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

Altitude logo

Altitude

Altitude (subsidiary of Accenture) — is a privately held product design and innovation firm based in Boston that uses its expertise in consumer insight, design and product engineering to help companies innovate and develop new physical products and services.

Interface Polymers logo

Interface Polymers

Manufacturing & Processing

Moment Energy logo

Moment Energy

Energy & Power

Element Resources logo

Element Resources

Energy & Power

Developing large-scale green hydrogen projects

Ignition Packaging logo

Ignition Packaging

About the Company Ignition Packaging is a biomaterials company developing scalable, cost-competitive alternatives to conventional petroleum-based foams. Ignition Packaging’s core technology transforms agricultural byproducts into a high-performance, biodegradable foam engineered […]

Daniel Consulting Group, LLC logo

Daniel Consulting Group, LLC

Energy & Power

Helping researchers improve battery and cell testing and providing due diligence for potential investors

RenewCO₂ logo

RenewCO₂

Manufacturing & Processing

Embr Labs logo

Embr Labs

New Mantle Technologies logo

New Mantle Technologies

Energy & Power

Subsurface characterization with physics and AI

KP Labs logo

KP Labs

Manufacturing & Processing

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

FLITE Material Sciences logo

FLITE Material Sciences

Manufacturing & Processing

Aelun logo

Aelun

Quantum Diamond Technologies logo

Quantum Diamond Technologies

Manufacturing & Processing

WindRays Energy LLC logo

WindRays Energy LLC

Energy & Power

WindRays Energy LLC — develops new models of wind energy designs to make widespread implementation in densely populated areas more efficient and profitable.

ONEPREDICT logo

ONEPREDICT

Manufacturing & Processing

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

Stash Energy logo

Stash Energy

Energy & Power

Stash Energy makes home heating and cooling affordable and sustainable with the first smart heat pump with built-in thermal energy storage.

Osmoses logo

Osmoses

Manufacturing & Processing

Osmoses — develops advanced membrane technology for efficient gas and vapor separations.

Julius Education logo

Julius Education

Infrastructure & Construction

Helping green organizations manage the changing workforce through an experience platform for job-seekers

Diffraqtion logo

Diffraqtion

Manufacturing & Processing

Machine Vision at the Quantum Limit

Revvit logo

Revvit

Infrastructure & Construction

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

Altitude logo

Altitude

Altitude (subsidiary of Accenture) — is a privately held product design and innovation firm based in Boston that uses its expertise in consumer insight, design and product engineering to help companies innovate and develop new physical products and services.

Interface Polymers logo

Interface Polymers

Manufacturing & Processing

Moment Energy logo

Moment Energy

Energy & Power

Element Resources logo

Element Resources

Energy & Power

Developing large-scale green hydrogen projects

Ignition Packaging logo

Ignition Packaging

About the Company Ignition Packaging is a biomaterials company developing scalable, cost-competitive alternatives to conventional petroleum-based foams. Ignition Packaging’s core technology transforms agricultural byproducts into a high-performance, biodegradable foam engineered […]

Daniel Consulting Group, LLC logo

Daniel Consulting Group, LLC

Energy & Power

Helping researchers improve battery and cell testing and providing due diligence for potential investors

RenewCO₂ logo

RenewCO₂

Manufacturing & Processing

Embr Labs logo

Embr Labs

New Mantle Technologies logo

New Mantle Technologies

Energy & Power

Subsurface characterization with physics and AI

KP Labs logo

KP Labs

Manufacturing & Processing

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

VesprSolar logo

VesprSolar

Energy & Power

VesprSolar — is transforming how solar panels are installed. VesprSolar V-Clamp™ is a low-cost fastener that makes solar arrays more secure and faster to install.

Peak Power logo

Peak Power

Energy & Power

Energy-storage optimization software for commercial and industrial customers and energy storage project developers

Axis Sky Renewables logo

Axis Sky Renewables

Energy & Power

-- creates innovative wind solutions, specializing in vertical axis wind turbines. Its cutting-edge technology is less expensive than traditional wind turbines to produce, deploy and maintain while still producing reliable renewable energy.

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.

RISE Robotics logo

RISE Robotics

Manufacturing & Processing

NBD Nano logo

NBD Nano

Manufacturing & Processing

NBD Nano — utilizes biomimicry to create functional and durable surface coatings that improve water collection, transport, and repellency.

Mass Magnetics logo

Mass Magnetics

Manufacturing & Processing

MECo specializes in the automated manufacture of structured functional materials for magnetic and electrochemical applications.

CarbonBlue logo

CarbonBlue

Food, Water, & Land

SparkCharge logo

SparkCharge

Transportation & Logistics

SparkCharge — is creating a more efficient and connected world of transportation by eliminating range anxiety with its ultra-fast, portable, and modular charging station for electric vehicles.

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.

Ententia logo

Ententia

Energy & Power

Trusted, scalable enterprise AI solutions that turn context into competitive advantage

QuantAQ logo

QuantAQ

Infrastructure & Construction

Air quality-monitoring networks that combine IoT hardware, machine learning, and user-friendly software design

Amplified Industries logo

Amplified Industries

Infrastructure & Construction

AI-driven control solution for oil wells using acoustic signals and edge computing to reduce costs and detect issues

SpringCycle Energy logo

SpringCycle Energy

Energy & Power

Rechargeable iron fuel to transform solar into baseload power

SWERV logo

SWERV

Infrastructure & Construction

Making homes healthier, more comfortable, and more energy efficient through reimagined and easy to install ventilation

Pike Robotics logo

Pike Robotics

Energy & Power

Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces

ThermaFuels logo

ThermaFuels

Transportation & Logistics

Deploying scalable, financeable low-carbon methanol and sustainable fuel infrastructure

Ardent Process Technologies logo

Ardent Process Technologies

Energy & Power

eSki Watercraft logo

eSki Watercraft

Energy & Power

Electric personal watercraft

9T Labs logo

9T Labs

Manufacturing & Processing

VesprSolar logo

VesprSolar

Energy & Power

VesprSolar — is transforming how solar panels are installed. VesprSolar V-Clamp™ is a low-cost fastener that makes solar arrays more secure and faster to install.

Peak Power logo

Peak Power

Energy & Power

Energy-storage optimization software for commercial and industrial customers and energy storage project developers

Axis Sky Renewables logo

Axis Sky Renewables

Energy & Power

-- creates innovative wind solutions, specializing in vertical axis wind turbines. Its cutting-edge technology is less expensive than traditional wind turbines to produce, deploy and maintain while still producing reliable renewable energy.

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.

RISE Robotics logo

RISE Robotics

Manufacturing & Processing

NBD Nano logo

NBD Nano

Manufacturing & Processing

NBD Nano — utilizes biomimicry to create functional and durable surface coatings that improve water collection, transport, and repellency.

Mass Magnetics logo

Mass Magnetics

Manufacturing & Processing

MECo specializes in the automated manufacture of structured functional materials for magnetic and electrochemical applications.

CarbonBlue logo

CarbonBlue

Food, Water, & Land

SparkCharge logo

SparkCharge

Transportation & Logistics

SparkCharge — is creating a more efficient and connected world of transportation by eliminating range anxiety with its ultra-fast, portable, and modular charging station for electric vehicles.

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.

Ententia logo

Ententia

Energy & Power

Trusted, scalable enterprise AI solutions that turn context into competitive advantage

QuantAQ logo

QuantAQ

Infrastructure & Construction

Air quality-monitoring networks that combine IoT hardware, machine learning, and user-friendly software design

Amplified Industries logo

Amplified Industries

Infrastructure & Construction

AI-driven control solution for oil wells using acoustic signals and edge computing to reduce costs and detect issues

SpringCycle Energy logo

SpringCycle Energy

Energy & Power

Rechargeable iron fuel to transform solar into baseload power

SWERV logo

SWERV

Infrastructure & Construction

Making homes healthier, more comfortable, and more energy efficient through reimagined and easy to install ventilation

Pike Robotics logo

Pike Robotics

Energy & Power

Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces

ThermaFuels logo

ThermaFuels

Transportation & Logistics

Deploying scalable, financeable low-carbon methanol and sustainable fuel infrastructure

Ardent Process Technologies logo

Ardent Process Technologies

Energy & Power

eSki Watercraft logo

eSki Watercraft

Energy & Power

Electric personal watercraft

9T Labs logo

9T Labs

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