Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
SpringCycle Energy logo

SpringCycle Energy

Energy & Power

Rechargeable iron fuel to transform solar into baseload power

Circe Bioscience logo

Circe Bioscience

Food, Water, & Land

Circe Industries circularizes industries with cellular factories.

Apitronics logo

Apitronics

Food, Water, & Land

Revvit logo

Revvit

Infrastructure & Construction

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

ZS2 Technologies logo

ZS2 Technologies

Manufacturing & Processing

ZS2 Technologies (Calgary, AB) creates magnesium-based advanced building products that can store up to 20 wt.% CO2 from proprietary carbon capture technology.

Monaire logo

Monaire

Infrastructure & Construction

Reducing HVAC energy use and repair costs for small commercial buildings

Conduit Tech logo

Conduit Tech

Infrastructure & Construction

Supporting HVAC contractors through design, sales, and installation

SeaSatellites logo

SeaSatellites

Transportation & Logistics

Florrent logo

Florrent

Food, Water, & Land

High-energy-density supercapacitors for energy storage, made from domestic biomass waste

DrinKicks logo

DrinKicks

Food, Water, & Land

Repurposing food waste and recycled materials into shoes

Helix Earth Technologies logo

Helix Earth Technologies

Infrastructure & Construction

Improving energy efficiency and minimizing emissions through a droplet-capture filtration system

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

ThermaFuels logo

ThermaFuels

Transportation & Logistics

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

Respire Energy logo

Respire Energy

Energy & Power

Safe, low-cost, and long-duration metal-air battery designed for microgrids

Form Energy logo

Form Energy

Energy & Power

Cost-effective, multi-day energy-storage solutions

Sora Fuel Corporation logo

Sora Fuel Corporation

Transportation & Logistics

Cost-effective sustainable aviation fuel

TerraFixing logo

TerraFixing

Manufacturing & Processing

TerraFixing — develops a direct-air-capture technology for cold climates using zeolite-based adsorbent materials.

Focis AI logo

Focis AI

FocisAI uses AI and 3D scan data to automatically identify and map infrastructure in industrial facilities, turning complex environments into actionable digital intelligence. Our platform enables faster inspections, improved safety, and more efficient operations across heavy industry.

Circularise logo

Circularise

Manufacturing & Processing

RailPod logo

RailPod

Transportation & Logistics

SpringCycle Energy logo

SpringCycle Energy

Energy & Power

Rechargeable iron fuel to transform solar into baseload power

Circe Bioscience logo

Circe Bioscience

Food, Water, & Land

Circe Industries circularizes industries with cellular factories.

Apitronics logo

Apitronics

Food, Water, & Land

Revvit logo

Revvit

Infrastructure & Construction

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

ZS2 Technologies logo

ZS2 Technologies

Manufacturing & Processing

ZS2 Technologies (Calgary, AB) creates magnesium-based advanced building products that can store up to 20 wt.% CO2 from proprietary carbon capture technology.

Monaire logo

Monaire

Infrastructure & Construction

Reducing HVAC energy use and repair costs for small commercial buildings

Conduit Tech logo

Conduit Tech

Infrastructure & Construction

Supporting HVAC contractors through design, sales, and installation

SeaSatellites logo

SeaSatellites

Transportation & Logistics

Florrent logo

Florrent

Food, Water, & Land

High-energy-density supercapacitors for energy storage, made from domestic biomass waste

DrinKicks logo

DrinKicks

Food, Water, & Land

Repurposing food waste and recycled materials into shoes

Helix Earth Technologies logo

Helix Earth Technologies

Infrastructure & Construction

Improving energy efficiency and minimizing emissions through a droplet-capture filtration system

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

ThermaFuels logo

ThermaFuels

Transportation & Logistics

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

Respire Energy logo

Respire Energy

Energy & Power

Safe, low-cost, and long-duration metal-air battery designed for microgrids

Form Energy logo

Form Energy

Energy & Power

Cost-effective, multi-day energy-storage solutions

Sora Fuel Corporation logo

Sora Fuel Corporation

Transportation & Logistics

Cost-effective sustainable aviation fuel

TerraFixing logo

TerraFixing

Manufacturing & Processing

TerraFixing — develops a direct-air-capture technology for cold climates using zeolite-based adsorbent materials.

Focis AI logo

Focis AI

FocisAI uses AI and 3D scan data to automatically identify and map infrastructure in industrial facilities, turning complex environments into actionable digital intelligence. Our platform enables faster inspections, improved safety, and more efficient operations across heavy industry.

Circularise logo

Circularise

Manufacturing & Processing

RailPod logo

RailPod

Transportation & Logistics

Metalmark Innovations logo

Metalmark Innovations

Transportation & Logistics

Beantrust logo

Beantrust

Food, Water, & Land

QD Solar logo

QD Solar

Energy & Power

Emrod logo

Emrod

Energy & Power

Sustainable power with long-range wireless power transfer technology

ALGBIO logo

ALGBIO

Manufacturing & Processing

ALGBIO — treats wastewater and captures CO2 with microalgae to produce biofuels, bioplastics, biomaterials and generate carbon credits.

Keystone Tower Systems logo

Keystone Tower Systems

Energy & Power

Biosimo logo

Biosimo

Manufacturing & Processing

Biosimo makes eco-friendly chemicals from plant waste using a clean, low-cost process

Timbergrove logo

Timbergrove

Energy & Power

Building AI + IoT solutions that connect and optimize assets, boosting visibility, safety, and efficiency

Nfinite Nanotech logo

Nfinite Nanotech

Manufacturing & Processing

Agira logo

Agira

Energy & Power

Agira Photonics — designs optical films for superior light management. Applications requiring highly collimated light with minimal chromatic aberration, such as LED lighting and displays, can be made more efficient with Agira’s film technology.

Manatee Energy logo

Manatee Energy

Infrastructure & Construction

Rigorous and automated system design for affordable home heat pumps

SomEV logo

SomEV

Energy & Power

SomEV — provides a wait-less charging network for light electric vehicles, using swappable batteries paired with a smart battery swap kiosk.

Mass Magnetics logo

Mass Magnetics

Manufacturing & Processing

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

Active Surfaces logo

Active Surfaces

Energy & Power

Flexible, lightweight solar panels that turn any surface into solar

L3 Open Water Power logo

L3 Open Water Power

Energy & Power

Anning Corporation logo

Anning Corporation

Energy & Power

Targeting iron-rich rocks to produce hydrogen

GreenIRR logo

GreenIRR

Transportation & Logistics

Arista Solutions logo

Arista Solutions

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.

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.

Metalmark Innovations logo

Metalmark Innovations

Transportation & Logistics

Beantrust logo

Beantrust

Food, Water, & Land

QD Solar logo

QD Solar

Energy & Power

Emrod logo

Emrod

Energy & Power

Sustainable power with long-range wireless power transfer technology

ALGBIO logo

ALGBIO

Manufacturing & Processing

ALGBIO — treats wastewater and captures CO2 with microalgae to produce biofuels, bioplastics, biomaterials and generate carbon credits.

Keystone Tower Systems logo

Keystone Tower Systems

Energy & Power

Biosimo logo

Biosimo

Manufacturing & Processing

Biosimo makes eco-friendly chemicals from plant waste using a clean, low-cost process

Timbergrove logo

Timbergrove

Energy & Power

Building AI + IoT solutions that connect and optimize assets, boosting visibility, safety, and efficiency

Nfinite Nanotech logo

Nfinite Nanotech

Manufacturing & Processing

Agira logo

Agira

Energy & Power

Agira Photonics — designs optical films for superior light management. Applications requiring highly collimated light with minimal chromatic aberration, such as LED lighting and displays, can be made more efficient with Agira’s film technology.

Manatee Energy logo

Manatee Energy

Infrastructure & Construction

Rigorous and automated system design for affordable home heat pumps

SomEV logo

SomEV

Energy & Power

SomEV — provides a wait-less charging network for light electric vehicles, using swappable batteries paired with a smart battery swap kiosk.

Mass Magnetics logo

Mass Magnetics

Manufacturing & Processing

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

Active Surfaces logo

Active Surfaces

Energy & Power

Flexible, lightweight solar panels that turn any surface into solar

L3 Open Water Power logo

L3 Open Water Power

Energy & Power

Anning Corporation logo

Anning Corporation

Energy & Power

Targeting iron-rich rocks to produce hydrogen

GreenIRR logo

GreenIRR

Transportation & Logistics

Arista Solutions logo

Arista Solutions

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.

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.

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