Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
Sistine Solar logo

Sistine Solar

Energy & Power

Sistine Solar — creates SolarSkin, an aesthetic overlay that transforms the look of any solar panel. It can make the panel blend in with a homeowner’s roof—no matter what color, pattern, or style.

Invested Development logo

Invested Development

Food, Water, & Land

It's Electric logo

It's Electric

Infrastructure & Construction

it's electric accelerates the adoption of EVs with a scalable and simple Level-2 curbside charging solution, ensuring that every community has access to clean, sustainable transportation options. it's electric's "behind the meter" approach simplifies the installation process by eliminating the need for utility coordination, and is the first in the country to offer EVSE hardware with a detachable cord.

pH Matter logo

pH Matter

Energy & Power

Dexai Robotics logo

Dexai Robotics

Food, Water, & Land

Malta logo

Malta

Energy & Power

Electric Fish logo

Electric Fish

Energy & Power

Electric Fish — deploys NanoGrids at gas-stations for extreme-fast EV charging, and grid-scale energy-backup.

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.

Public Grid logo

Public Grid

Energy & Power

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.

Night Vision Technology Solutions (NVTS) logo

Night Vision Technology Solutions (NVTS)

Noteworthy AI logo

Noteworthy AI

Energy & Power

Noteworthy AI — helps electric utilities increase the reliability, resiliency and safety of the distribution grid while reducing cost.

Wastewizer Technologies logo

Wastewizer Technologies

Transportation & Logistics

Wastewizer Technologies — builds internet-connected rugged scales that continuously monitor the weight of containers through their BinBar™ system; with this technology, they empower the waste industry by providing actionable insights for improving sustainability, economic efficiency, and customer satisfaction.

ZwitterCo logo

ZwitterCo

Food, Water, & Land

Nanofiltration membranes for wastewater treatment with unprecedented fouling-resistance and size-selectivity.

Littoral Power Systems logo

Littoral Power Systems

Energy & Power

LPS sells and maintains innovative, cost-effective, low impact hydropower and ocean power equipment.

Fysikes Biosolutions logo

Fysikes Biosolutions

Energy & Power

Fysikes Biosolutions — develops renewable green fuels (methanol, ammonia, and naphtas) via the production of hydrogen and concentrated CO2 from direct air capture and industrial CO2 capture technologies.

Visolis logo

Visolis

Infrastructure & Construction

Keystone Tower Systems logo

Keystone Tower Systems

Energy & Power

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.

Elios logo

Elios

Energy & Power

Sistine Solar logo

Sistine Solar

Energy & Power

Sistine Solar — creates SolarSkin, an aesthetic overlay that transforms the look of any solar panel. It can make the panel blend in with a homeowner’s roof—no matter what color, pattern, or style.

Invested Development logo

Invested Development

Food, Water, & Land

It's Electric logo

It's Electric

Infrastructure & Construction

it's electric accelerates the adoption of EVs with a scalable and simple Level-2 curbside charging solution, ensuring that every community has access to clean, sustainable transportation options. it's electric's "behind the meter" approach simplifies the installation process by eliminating the need for utility coordination, and is the first in the country to offer EVSE hardware with a detachable cord.

pH Matter logo

pH Matter

Energy & Power

Dexai Robotics logo

Dexai Robotics

Food, Water, & Land

Malta logo

Malta

Energy & Power

Electric Fish logo

Electric Fish

Energy & Power

Electric Fish — deploys NanoGrids at gas-stations for extreme-fast EV charging, and grid-scale energy-backup.

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.

Public Grid logo

Public Grid

Energy & Power

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.

Night Vision Technology Solutions (NVTS) logo

Night Vision Technology Solutions (NVTS)

Noteworthy AI logo

Noteworthy AI

Energy & Power

Noteworthy AI — helps electric utilities increase the reliability, resiliency and safety of the distribution grid while reducing cost.

Wastewizer Technologies logo

Wastewizer Technologies

Transportation & Logistics

Wastewizer Technologies — builds internet-connected rugged scales that continuously monitor the weight of containers through their BinBar™ system; with this technology, they empower the waste industry by providing actionable insights for improving sustainability, economic efficiency, and customer satisfaction.

ZwitterCo logo

ZwitterCo

Food, Water, & Land

Nanofiltration membranes for wastewater treatment with unprecedented fouling-resistance and size-selectivity.

Littoral Power Systems logo

Littoral Power Systems

Energy & Power

LPS sells and maintains innovative, cost-effective, low impact hydropower and ocean power equipment.

Fysikes Biosolutions logo

Fysikes Biosolutions

Energy & Power

Fysikes Biosolutions — develops renewable green fuels (methanol, ammonia, and naphtas) via the production of hydrogen and concentrated CO2 from direct air capture and industrial CO2 capture technologies.

Visolis logo

Visolis

Infrastructure & Construction

Keystone Tower Systems logo

Keystone Tower Systems

Energy & Power

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.

Elios logo

Elios

Energy & Power

KUBO Greenhouse Projects logo

KUBO Greenhouse Projects

Food, Water, & Land

Veloce Energy logo

Veloce Energy

Energy & Power

Veloce Energy — develops technology to create intelligent, flexible, and scalable grid-edge energy networks (GrEEN). Initially focused on cost-reduction in EV charging stations, the Veloce FastGrid™ system uniquely combines energy storage, intelligence, a streamlined installation system, and a unique charging-infrastructure-as-a-service model to maximize and deliver customer value.

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.

SiTration logo

SiTration

Manufacturing & Processing

SiTration — is developing a novel membrane filtration technology that combines durability and performance at low cost to enable highly efficient separations in today’s mega-industries.

Patch logo

Patch

Transportation & Logistics

Giner Labs logo

Giner Labs

Energy & Power

At Giner Labs, we focus on developing innovative solutions in electrochemical sensors, electrolyzers, fuel cells, advanced materials, and medical devices. Our goal is to create technologies that have a profound impact on various sectors, including clean energy, medical applications, as well as aerospace and defense.

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.

Micronic Technologies logo

Micronic Technologies

Food, Water, & Land

Micronic Technologies — is a women co-founded and led, clean-tech company that is transforming industrial wastewater into high-value resources.

Ranger Solar logo

Ranger Solar

Energy & Power

Euphree logo

Euphree

Transportation & Logistics

Electric bikes made fashionable.

Future logo

Future

Future — simplifies the transition to a net-zero economy for individuals and families. Future offers a set of financial tools and incentives for climate smart living. Future takes a 360°view of spending and generates individualized options to save money and reduce carbon emissions with their decision-engine.

Tank Utility logo

Tank Utility

Energy & Power

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.

Electra logo

Electra

Manufacturing & Processing

ElectraSteel's — mission is to electrify and decarbonize steelmaking using renewable energy with zero carbon dioxide emissions while lowering the energy intensity and cost.

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.

Autonomous Marine Systems logo

Autonomous Marine Systems

Food, Water, & Land

Infranergy logo

Infranergy

Energy & Power

Nexus Circular logo

Nexus Circular

Manufacturing & Processing

Ohmium International logo

Ohmium International

Energy & Power

Resonant Energy logo

Resonant Energy

Energy & Power

KUBO Greenhouse Projects logo

KUBO Greenhouse Projects

Food, Water, & Land

Veloce Energy logo

Veloce Energy

Energy & Power

Veloce Energy — develops technology to create intelligent, flexible, and scalable grid-edge energy networks (GrEEN). Initially focused on cost-reduction in EV charging stations, the Veloce FastGrid™ system uniquely combines energy storage, intelligence, a streamlined installation system, and a unique charging-infrastructure-as-a-service model to maximize and deliver customer value.

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.

SiTration logo

SiTration

Manufacturing & Processing

SiTration — is developing a novel membrane filtration technology that combines durability and performance at low cost to enable highly efficient separations in today’s mega-industries.

Patch logo

Patch

Transportation & Logistics

Giner Labs logo

Giner Labs

Energy & Power

At Giner Labs, we focus on developing innovative solutions in electrochemical sensors, electrolyzers, fuel cells, advanced materials, and medical devices. Our goal is to create technologies that have a profound impact on various sectors, including clean energy, medical applications, as well as aerospace and defense.

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.

Micronic Technologies logo

Micronic Technologies

Food, Water, & Land

Micronic Technologies — is a women co-founded and led, clean-tech company that is transforming industrial wastewater into high-value resources.

Ranger Solar logo

Ranger Solar

Energy & Power

Euphree logo

Euphree

Transportation & Logistics

Electric bikes made fashionable.

Future logo

Future

Future — simplifies the transition to a net-zero economy for individuals and families. Future offers a set of financial tools and incentives for climate smart living. Future takes a 360°view of spending and generates individualized options to save money and reduce carbon emissions with their decision-engine.

Tank Utility logo

Tank Utility

Energy & Power

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.

Electra logo

Electra

Manufacturing & Processing

ElectraSteel's — mission is to electrify and decarbonize steelmaking using renewable energy with zero carbon dioxide emissions while lowering the energy intensity and cost.

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.

Autonomous Marine Systems logo

Autonomous Marine Systems

Food, Water, & Land

Infranergy logo

Infranergy

Energy & Power

Nexus Circular logo

Nexus Circular

Manufacturing & Processing

Ohmium International logo

Ohmium International

Energy & Power

Resonant Energy logo

Resonant 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