Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
Biospheric AI logo

Biospheric AI

Energy & Power

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

AMPeers logo

AMPeers

Energy & Power

Advanced MOCVD resulting in high-temp superconductors with higher performance, faster output, and lower cost

10DQ logo

10DQ

Energy & Power

Battery tech for long-duration energy storage at lower costs and improved safety

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.

Sol Clarity logo

Sol Clarity

Energy & Power

Sol Clarity — Solar panels need cleaning but there’s not enough water for it – with EDS just flip a switch to watch dust disappear. Dust settles, they don’t!

Fleet Robotics logo

Fleet Robotics

Transportation & Logistics

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

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.

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.

Wellbore Consultants logo

Wellbore Consultants

Energy & Power

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

Octavia Carbon Co logo

Octavia Carbon Co

Manufacturing & Processing

Geothermal heat to capture and mineralize CO₂

PURGIT logo

PURGIT

Transportation & Logistics

Build a verifiable vapor control system that makes no pollution and recovers the VOC for recycling. Reduce air pollution and claim carbon credits.

Simlionics logo

Simlionics

Energy & Power

Physics-aware, advanced AI battery modeling and intelligence for EV and energy-storage systems

Opus One Solutions logo

Opus One Solutions

Energy & Power

PlaSene logo

PlaSene

Manufacturing & Processing

Converting plastic waste into liquid fuel and low-carbon hydrogen

QuEra Computing logo

QuEra Computing

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.

Invested Development logo

Invested Development

Food, Water, & Land

Terralytiq logo

Terralytiq

Manufacturing & Processing

Digital models that deliver Scope 3 hotspots, actionable initiatives, and supplier engagement to cut cost and carbon

Carbon Upcycling Technologies logo

Carbon Upcycling Technologies

Manufacturing & Processing

Carbon Upcycling Technologies (Calgary, AB) is a circular decarbonization solution for hard-to-abate industries –- utilizing low-purity industrial CO2 and industrial by-products to decarbonize cement.

eologix sensor technology logo

eologix sensor technology

Energy & Power

Biospheric AI logo

Biospheric AI

Energy & Power

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

AMPeers logo

AMPeers

Energy & Power

Advanced MOCVD resulting in high-temp superconductors with higher performance, faster output, and lower cost

10DQ logo

10DQ

Energy & Power

Battery tech for long-duration energy storage at lower costs and improved safety

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.

Sol Clarity logo

Sol Clarity

Energy & Power

Sol Clarity — Solar panels need cleaning but there’s not enough water for it – with EDS just flip a switch to watch dust disappear. Dust settles, they don’t!

Fleet Robotics logo

Fleet Robotics

Transportation & Logistics

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

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.

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.

Wellbore Consultants logo

Wellbore Consultants

Energy & Power

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

Octavia Carbon Co logo

Octavia Carbon Co

Manufacturing & Processing

Geothermal heat to capture and mineralize CO₂

PURGIT logo

PURGIT

Transportation & Logistics

Build a verifiable vapor control system that makes no pollution and recovers the VOC for recycling. Reduce air pollution and claim carbon credits.

Simlionics logo

Simlionics

Energy & Power

Physics-aware, advanced AI battery modeling and intelligence for EV and energy-storage systems

Opus One Solutions logo

Opus One Solutions

Energy & Power

PlaSene logo

PlaSene

Manufacturing & Processing

Converting plastic waste into liquid fuel and low-carbon hydrogen

QuEra Computing logo

QuEra Computing

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.

Invested Development logo

Invested Development

Food, Water, & Land

Terralytiq logo

Terralytiq

Manufacturing & Processing

Digital models that deliver Scope 3 hotspots, actionable initiatives, and supplier engagement to cut cost and carbon

Carbon Upcycling Technologies logo

Carbon Upcycling Technologies

Manufacturing & Processing

Carbon Upcycling Technologies (Calgary, AB) is a circular decarbonization solution for hard-to-abate industries –- utilizing low-purity industrial CO2 and industrial by-products to decarbonize cement.

eologix sensor technology logo

eologix sensor technology

Energy & Power

SmartAC.com logo

SmartAC.com

Infrastructure & Construction

SmartAC.com — is on a mission to perfect the experience of home comfort. The company helps its partners offer next-level service with a more proactive approach to HVAC & plumbing.

Teknobuilt logo

Teknobuilt

Infrastructure & Construction

Cloud-based construction project management software

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

Coflux Purification, Inc logo

Coflux Purification, Inc

Food, Water, & Land

A modular, on-site water treatment system eliminating persistent contaminants from water and industrial waste streams

BlakBear logo

BlakBear

Food, Water, & Land

Elementium Materials logo

Elementium Materials

Energy & Power

Battery-electrolyte technology that unlocks affordable, lightweight, long-lasting, intrinsically safe batteries

247Solar logo

247Solar

Energy & Power

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

Starfire Energy logo

Starfire Energy

Energy & Power

Alma Energy logo

Alma Energy

Energy & Power

Geothermal exploration to deliver scaled renewable energy production at economic levels

GigaDAC logo

GigaDAC

Energy & Power

Direct air capture optimized for gigaton scale

Raptor Maps logo

Raptor Maps

Energy & Power

AI software to increase solar farm power production, reduce operational risk, and lower costs

SRECTrade logo

SRECTrade

Energy & Power

Management and transaction platform for environmental commodities to reduce costs and increase transparency

CalWave Power Technologies logo

CalWave Power Technologies

Energy & Power

CalWave — CalWave’s mission is to unlock the vast and steady carbon-free power from ocean waves, bringing superior power-generating technology to market with a global reach. CalWave’s proprietary wave energy converter technology achieves high performance while surviving storms and extreme conditions.

Hempitecture logo

Hempitecture

Manufacturing & Processing

Hempitecture (Ketchum, ID) is a manufacturer and distributor of biobased building materials, including their low embodied carbon insulation, HempWool®.

NewGrid logo

NewGrid

Energy & Power

Software and services to enable system operators, utilities, and power market participants to reduce grid congestion

OpConnect logo

OpConnect

Transportation & Logistics

OpConnect — is an EV charger company that provides charging station hardware, software, and operating services. Their cloud-based software platform provides energy management, payment processing, scheduling and maintenance tickets, and support services for users.

HyperKelp logo

HyperKelp

Food, Water, & Land

HyperKelp — produces the Kelp Smart Buoy—a hosted payload platform capable of carrying hundreds of sensors—that collects and transmits marine-level data for wind farmers, climate scientists, and military intelligence officials.

Aelun logo

Aelun

Seabound logo

Seabound

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.

SmartAC.com logo

SmartAC.com

Infrastructure & Construction

SmartAC.com — is on a mission to perfect the experience of home comfort. The company helps its partners offer next-level service with a more proactive approach to HVAC & plumbing.

Teknobuilt logo

Teknobuilt

Infrastructure & Construction

Cloud-based construction project management software

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

Coflux Purification, Inc logo

Coflux Purification, Inc

Food, Water, & Land

A modular, on-site water treatment system eliminating persistent contaminants from water and industrial waste streams

BlakBear logo

BlakBear

Food, Water, & Land

Elementium Materials logo

Elementium Materials

Energy & Power

Battery-electrolyte technology that unlocks affordable, lightweight, long-lasting, intrinsically safe batteries

247Solar logo

247Solar

Energy & Power

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

Starfire Energy logo

Starfire Energy

Energy & Power

Alma Energy logo

Alma Energy

Energy & Power

Geothermal exploration to deliver scaled renewable energy production at economic levels

GigaDAC logo

GigaDAC

Energy & Power

Direct air capture optimized for gigaton scale

Raptor Maps logo

Raptor Maps

Energy & Power

AI software to increase solar farm power production, reduce operational risk, and lower costs

SRECTrade logo

SRECTrade

Energy & Power

Management and transaction platform for environmental commodities to reduce costs and increase transparency

CalWave Power Technologies logo

CalWave Power Technologies

Energy & Power

CalWave — CalWave’s mission is to unlock the vast and steady carbon-free power from ocean waves, bringing superior power-generating technology to market with a global reach. CalWave’s proprietary wave energy converter technology achieves high performance while surviving storms and extreme conditions.

Hempitecture logo

Hempitecture

Manufacturing & Processing

Hempitecture (Ketchum, ID) is a manufacturer and distributor of biobased building materials, including their low embodied carbon insulation, HempWool®.

NewGrid logo

NewGrid

Energy & Power

Software and services to enable system operators, utilities, and power market participants to reduce grid congestion

OpConnect logo

OpConnect

Transportation & Logistics

OpConnect — is an EV charger company that provides charging station hardware, software, and operating services. Their cloud-based software platform provides energy management, payment processing, scheduling and maintenance tickets, and support services for users.

HyperKelp logo

HyperKelp

Food, Water, & Land

HyperKelp — produces the Kelp Smart Buoy—a hosted payload platform capable of carrying hundreds of sensors—that collects and transmits marine-level data for wind farmers, climate scientists, and military intelligence officials.

Aelun logo

Aelun

Seabound logo

Seabound

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.

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