Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
Enerbrain logo

Enerbrain

Infrastructure & Construction

Phase Two Chemicals logo

Phase Two Chemicals

Manufacturing & Processing

Advanced electrode and reactor designs for on-site, on-demand chemical generation and energy storage

Hertha Metals Inc. logo

Hertha Metals Inc.

Energy & Power

247Solar logo

247Solar

Energy & Power

High-temp solar power with heat storage for clean industrial heat and renewable power

Verne logo

Verne

Energy & Power

Verne — develops hydrogen storage systems for zero-emission heavy-duty trucks.

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.

Malta logo

Malta

Energy & Power

Clarity Castle logo

Clarity Castle

Infrastructure & Construction

Modular, soundproof work pods made from recycled materials

Exakom logo

Exakom

Manufacturing & Processing

Exakom — is a pioneer in developing innovative data analysis products for the industrial automation market.

Active Surfaces logo

Active Surfaces

Energy & Power

Flexible, lightweight solar panels that turn any surface into solar

Planckton Data logo

Planckton Data

Manufacturing & Processing

Planckton Data — is making a platform that is built to manage the entire carbon data lifecycle by automating data collection and conversion and producing insights quickly without the need to make extensive changes to existing systems

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.

Global ROC logo

Global ROC

Food, Water, & Land

Global ROC — provides an innovative technology solution for cooling tower systems that reduces chemical consumption, saves water, and decreases energy costs.

Adept Materials logo

Adept Materials

Infrastructure & Construction

Material innovations that improve moisture regulation, comfort, and energy efficiency

Eos Loan logo

Eos Loan

Energy & Power

R&B Technology logo

R&B Technology

Manufacturing & Processing

R&B Technology (USA) Company Inc. — develops Ari, a cloud-based augmented intelligence software platform that analyzes data and creates holistic recommendations—and elegant visualizations—based on insights that are impossible to see otherwise.

SEAROVER UNDERWATER ROBOTICS logo

SEAROVER UNDERWATER ROBOTICS

Manufacturing & Processing

FibreCoat logo

FibreCoat

Transportation & Logistics

OhmConnect logo

OhmConnect

Energy & Power

OhmConnect improve the lives of people and the health of the planet by reimagining the way we (collectively) use energy.

Fervo Energy logo

Fervo Energy

Energy & Power

Fervo Energy — is a next-generation geothermal power developer, delivering 24/7 carbon-free energy.

Enerbrain logo

Enerbrain

Infrastructure & Construction

Phase Two Chemicals logo

Phase Two Chemicals

Manufacturing & Processing

Advanced electrode and reactor designs for on-site, on-demand chemical generation and energy storage

Hertha Metals Inc. logo

Hertha Metals Inc.

Energy & Power

247Solar logo

247Solar

Energy & Power

High-temp solar power with heat storage for clean industrial heat and renewable power

Verne logo

Verne

Energy & Power

Verne — develops hydrogen storage systems for zero-emission heavy-duty trucks.

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.

Malta logo

Malta

Energy & Power

Clarity Castle logo

Clarity Castle

Infrastructure & Construction

Modular, soundproof work pods made from recycled materials

Exakom logo

Exakom

Manufacturing & Processing

Exakom — is a pioneer in developing innovative data analysis products for the industrial automation market.

Active Surfaces logo

Active Surfaces

Energy & Power

Flexible, lightweight solar panels that turn any surface into solar

Planckton Data logo

Planckton Data

Manufacturing & Processing

Planckton Data — is making a platform that is built to manage the entire carbon data lifecycle by automating data collection and conversion and producing insights quickly without the need to make extensive changes to existing systems

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.

Global ROC logo

Global ROC

Food, Water, & Land

Global ROC — provides an innovative technology solution for cooling tower systems that reduces chemical consumption, saves water, and decreases energy costs.

Adept Materials logo

Adept Materials

Infrastructure & Construction

Material innovations that improve moisture regulation, comfort, and energy efficiency

Eos Loan logo

Eos Loan

Energy & Power

R&B Technology logo

R&B Technology

Manufacturing & Processing

R&B Technology (USA) Company Inc. — develops Ari, a cloud-based augmented intelligence software platform that analyzes data and creates holistic recommendations—and elegant visualizations—based on insights that are impossible to see otherwise.

SEAROVER UNDERWATER ROBOTICS logo

SEAROVER UNDERWATER ROBOTICS

Manufacturing & Processing

FibreCoat logo

FibreCoat

Transportation & Logistics

OhmConnect logo

OhmConnect

Energy & Power

OhmConnect improve the lives of people and the health of the planet by reimagining the way we (collectively) use energy.

Fervo Energy logo

Fervo Energy

Energy & Power

Fervo Energy — is a next-generation geothermal power developer, delivering 24/7 carbon-free energy.

Onvector logo

Onvector

Infrastructure & Construction

Non-chemical water treatment using plasma to rid water of PFAS and more

MITO Material Solutions logo

MITO Material Solutions

Manufacturing & Processing

KVD logo

KVD

Manufacturing & Processing

KVD enables EELS in existing SEMs, providing a cost-effective way to see light elements and bonding states.

MacroCycle Technologies logo

MacroCycle Technologies

Manufacturing & Processing

CarbonFree logo

CarbonFree

Manufacturing & Processing

BiaTech Corporation logo

BiaTech Corporation

Energy & Power

Energy and natural resource infrastructure immersion with AI-enabled edge and cloud technology

OffGridBox logo

OffGridBox

Food, Water, & Land

Kula Bio logo

Kula Bio

Energy & Power

Kula Bio — supercharges natural nitrogen-fixing microbes with renewable energy in order to deliver reliable, low-cost organic biofertilizers.

PurposeEnergy logo

PurposeEnergy

Food, Water, & Land

Diffraqtion logo

Diffraqtion

Manufacturing & Processing

Machine Vision at the Quantum Limit

Manatee Energy logo

Manatee Energy

Infrastructure & Construction

Rigorous and automated system design for affordable home heat pumps

Heila Technologies logo

Heila Technologies

Energy & Power

Heila Technologies — has developed the next generation of optimization and aggregation technologies for DERs to help accelerate the adoption of clean energy.

Topl logo

Topl

Infrastructure & Construction

Topl is an impact technology company building a blockchain that empowers businesses to prove and monetize ethical and sustainable practices.

Mithril Technologies logo

Mithril Technologies

Infrastructure & Construction

Reshapable reflectors for advanced antennas & radars for space-based earth and severe weather monitoring

Energy Intelligence logo

Energy Intelligence

Energy & Power

Energy Intelligence — develops ultra-compact energy harvesting systems that are installed on roads to turn the motion of vehicles into electricity.

REON Technology logo

REON Technology

Energy & Power

AI-driven optimization of systems through tailored power management of batteries and PV panels for energy storage

Biospheric AI logo

Biospheric AI

Energy & Power

High-resolution, building-level energy demand forecasts for utilities and more

Biobot Analytics logo

Biobot Analytics

Food, Water, & Land

AmHyTech logo

AmHyTech

Energy & Power

We build last-mile ammonia infrastructure for marine fuel, agriculture, and industrial applications.

Alkemy Environmental logo

Alkemy Environmental

Manufacturing & Processing

Alkemy Environmental — holds the only technology solution that can recycle waste into high strength ceramics for the building materials market.

Onvector logo

Onvector

Infrastructure & Construction

Non-chemical water treatment using plasma to rid water of PFAS and more

MITO Material Solutions logo

MITO Material Solutions

Manufacturing & Processing

KVD logo

KVD

Manufacturing & Processing

KVD enables EELS in existing SEMs, providing a cost-effective way to see light elements and bonding states.

MacroCycle Technologies logo

MacroCycle Technologies

Manufacturing & Processing

CarbonFree logo

CarbonFree

Manufacturing & Processing

BiaTech Corporation logo

BiaTech Corporation

Energy & Power

Energy and natural resource infrastructure immersion with AI-enabled edge and cloud technology

OffGridBox logo

OffGridBox

Food, Water, & Land

Kula Bio logo

Kula Bio

Energy & Power

Kula Bio — supercharges natural nitrogen-fixing microbes with renewable energy in order to deliver reliable, low-cost organic biofertilizers.

PurposeEnergy logo

PurposeEnergy

Food, Water, & Land

Diffraqtion logo

Diffraqtion

Manufacturing & Processing

Machine Vision at the Quantum Limit

Manatee Energy logo

Manatee Energy

Infrastructure & Construction

Rigorous and automated system design for affordable home heat pumps

Heila Technologies logo

Heila Technologies

Energy & Power

Heila Technologies — has developed the next generation of optimization and aggregation technologies for DERs to help accelerate the adoption of clean energy.

Topl logo

Topl

Infrastructure & Construction

Topl is an impact technology company building a blockchain that empowers businesses to prove and monetize ethical and sustainable practices.

Mithril Technologies logo

Mithril Technologies

Infrastructure & Construction

Reshapable reflectors for advanced antennas & radars for space-based earth and severe weather monitoring

Energy Intelligence logo

Energy Intelligence

Energy & Power

Energy Intelligence — develops ultra-compact energy harvesting systems that are installed on roads to turn the motion of vehicles into electricity.

REON Technology logo

REON Technology

Energy & Power

AI-driven optimization of systems through tailored power management of batteries and PV panels for energy storage

Biospheric AI logo

Biospheric AI

Energy & Power

High-resolution, building-level energy demand forecasts for utilities and more

Biobot Analytics logo

Biobot Analytics

Food, Water, & Land

AmHyTech logo

AmHyTech

Energy & Power

We build last-mile ammonia infrastructure for marine fuel, agriculture, and industrial applications.

Alkemy Environmental logo

Alkemy Environmental

Manufacturing & Processing

Alkemy Environmental — holds the only technology solution that can recycle waste into high strength ceramics for the building materials market.

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