Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
Save Energy Systems logo

Save Energy Systems

Infrastructure & Construction

Dsider logo

Dsider

Energy & Power

SaaS platform to accelerate the expansion of energy-transition projects

VentureWell logo

VentureWell

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.

Greentown Labs logo

Greentown Labs

Phase Two Chemicals logo

Phase Two Chemicals

Manufacturing & Processing

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

Amogy logo

Amogy

Energy & Power

Amogy — is building a novel portable carbon-free energy system using ammonia as a renewable fuel. Their system has 5x higher system-level energy densities compared to lithium batteries.

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.

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.

Wootz logo

Wootz

Manufacturing & Processing

Carbon nanotube supermaterials to replace or augment traditional metallic conductors

BlueTec Energy logo

BlueTec Energy

Energy & Power

Manatee Energy logo

Manatee Energy

Infrastructure & Construction

Rigorous and automated system design for affordable home heat pumps

Wellbore Consultants logo

Wellbore Consultants

Energy & Power

Advanced subsurface stimulation systems to improve resource recovery while reducing energy intensity, water usage, and surface impact

Clean Crop Technologies logo

Clean Crop Technologies

Food, Water, & Land

Improving food safety and reducing food waste by removing contaminants with food-grade gasses and electricity

Sofar Ocean logo

Sofar Ocean

Food, Water, & Land

Kornit Digital logo

Kornit Digital

Manufacturing & Processing

Kornit Digital (formerly Voxel8) — is developing digital manufacturing systems that revolutionize how footwear and athletic apparel are designed, manufactured, and delivered to consumers.

Renu Energy logo

Renu Energy

Manufacturing & Processing

Converting waste and converting it into fuels and energy helping to create a more responsible environment

7Analytics logo

7Analytics

Infrastructure & Construction

7Analytics is a climate-tech startup developing superior high-precision predictive models for floods, enhancing urban resilience to climate change. Our mission is to empower asset owners, insurance companies and governance with the tools needed to mitigate the impacts of extreme weather events.

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.

Transocean logo

Transocean

Save Energy Systems logo

Save Energy Systems

Infrastructure & Construction

Dsider logo

Dsider

Energy & Power

SaaS platform to accelerate the expansion of energy-transition projects

VentureWell logo

VentureWell

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.

Greentown Labs logo

Greentown Labs

Phase Two Chemicals logo

Phase Two Chemicals

Manufacturing & Processing

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

Amogy logo

Amogy

Energy & Power

Amogy — is building a novel portable carbon-free energy system using ammonia as a renewable fuel. Their system has 5x higher system-level energy densities compared to lithium batteries.

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.

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.

Wootz logo

Wootz

Manufacturing & Processing

Carbon nanotube supermaterials to replace or augment traditional metallic conductors

BlueTec Energy logo

BlueTec Energy

Energy & Power

Manatee Energy logo

Manatee Energy

Infrastructure & Construction

Rigorous and automated system design for affordable home heat pumps

Wellbore Consultants logo

Wellbore Consultants

Energy & Power

Advanced subsurface stimulation systems to improve resource recovery while reducing energy intensity, water usage, and surface impact

Clean Crop Technologies logo

Clean Crop Technologies

Food, Water, & Land

Improving food safety and reducing food waste by removing contaminants with food-grade gasses and electricity

Sofar Ocean logo

Sofar Ocean

Food, Water, & Land

Kornit Digital logo

Kornit Digital

Manufacturing & Processing

Kornit Digital (formerly Voxel8) — is developing digital manufacturing systems that revolutionize how footwear and athletic apparel are designed, manufactured, and delivered to consumers.

Renu Energy logo

Renu Energy

Manufacturing & Processing

Converting waste and converting it into fuels and energy helping to create a more responsible environment

7Analytics logo

7Analytics

Infrastructure & Construction

7Analytics is a climate-tech startup developing superior high-precision predictive models for floods, enhancing urban resilience to climate change. Our mission is to empower asset owners, insurance companies and governance with the tools needed to mitigate the impacts of extreme weather events.

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.

Transocean logo

Transocean

AmpUp logo

AmpUp

Transportation & Logistics

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.

enaDyne logo

enaDyne

Manufacturing & Processing

enaDyne — develops non-thermal plasma catalysis reactors to convert CO2 into chemicals and fuels.

LA NPDT logo

LA NPDT

EVLO Energy Storage logo

EVLO Energy Storage

Energy & Power

AIRCO logo

AIRCO

Energy & Power

Community Energy Labs logo

Community Energy Labs

Infrastructure & Construction

Fleet Robotics logo

Fleet Robotics

Transportation & Logistics

Robotics to clean biofouling from ship hulls, improving fuel consumption for large ships

NW NA logo

NW NA

Energy & Power

NW NA — is an independent operator of extremely high-power electric charging stations (IECharge®), distributed electricity storage units (JBox®), and new micro-electricity production units (Tikaz®).

Salient Energy logo

Salient Energy

Energy & Power

Night Vision Technology Solutions (NVTS) logo

Night Vision Technology Solutions (NVTS)

Transaera logo

Transaera

Infrastructure & Construction

Ultra-efficient air conditioning using a novel desiccant material

Syzygy Plasmonics logo

Syzygy Plasmonics

Manufacturing & Processing

Syzygy Plasmonics — is a technology company developing a new type of photocatalytic chemical reactor to revolutionize the industrial gas, chemical, and energy industries.

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.

REON Technology logo

REON Technology

Energy & Power

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

Ardent Process Technologies logo

Ardent Process Technologies

Energy & Power

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.

Nebumi logo

Nebumi

Energy & Power

Emissions intelligence platform, monitoring pollution with satellite data and AI

Demia logo

Demia

Manufacturing & Processing

Demia is a secure, real-time data infrastructure and platform that streamlines carbon certification, enabling faster, cost-effective scaling of climate projects on our path to 1 Billion tons of annual impact. With cutting-edge technology and strong industry partnerships, Demia ensures transparency, trust, and maximized climate impact for every dollar invested.

Oxylus Energy logo

Oxylus Energy

Transportation & Logistics

AmpUp logo

AmpUp

Transportation & Logistics

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.

enaDyne logo

enaDyne

Manufacturing & Processing

enaDyne — develops non-thermal plasma catalysis reactors to convert CO2 into chemicals and fuels.

LA NPDT logo

LA NPDT

EVLO Energy Storage logo

EVLO Energy Storage

Energy & Power

AIRCO logo

AIRCO

Energy & Power

Community Energy Labs logo

Community Energy Labs

Infrastructure & Construction

Fleet Robotics logo

Fleet Robotics

Transportation & Logistics

Robotics to clean biofouling from ship hulls, improving fuel consumption for large ships

NW NA logo

NW NA

Energy & Power

NW NA — is an independent operator of extremely high-power electric charging stations (IECharge®), distributed electricity storage units (JBox®), and new micro-electricity production units (Tikaz®).

Salient Energy logo

Salient Energy

Energy & Power

Night Vision Technology Solutions (NVTS) logo

Night Vision Technology Solutions (NVTS)

Transaera logo

Transaera

Infrastructure & Construction

Ultra-efficient air conditioning using a novel desiccant material

Syzygy Plasmonics logo

Syzygy Plasmonics

Manufacturing & Processing

Syzygy Plasmonics — is a technology company developing a new type of photocatalytic chemical reactor to revolutionize the industrial gas, chemical, and energy industries.

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.

REON Technology logo

REON Technology

Energy & Power

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

Ardent Process Technologies logo

Ardent Process Technologies

Energy & Power

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.

Nebumi logo

Nebumi

Energy & Power

Emissions intelligence platform, monitoring pollution with satellite data and AI

Demia logo

Demia

Manufacturing & Processing

Demia is a secure, real-time data infrastructure and platform that streamlines carbon certification, enabling faster, cost-effective scaling of climate projects on our path to 1 Billion tons of annual impact. With cutting-edge technology and strong industry partnerships, Demia ensures transparency, trust, and maximized climate impact for every dollar invested.

Oxylus Energy logo

Oxylus Energy

Transportation & Logistics

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