Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
Terralytiq logo

Terralytiq

Manufacturing & Processing

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

Wellbore Consultants logo

Wellbore Consultants

Energy & Power

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

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.

Raptor Maps logo

Raptor Maps

Energy & Power

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

Tycho Solutions logo

Tycho Solutions

Energy & Power

Eden GeoPower logo

Eden GeoPower

Energy & Power

Electrical Reservoir Stimulation to enhance subsurface permeability

Eclipse Solar Projects logo

Eclipse Solar Projects

Energy & Power

Eclipse Solar Projects is a developer of utility-scale solar assets that generates, and then sells, power/electricity wholesale.

Starfield logo

Starfield

Food, Water, & Land

PooPoof Inc logo

PooPoof Inc

Food, Water, & Land

The world’s first pocket-sized bioreactor

Beantrust logo

Beantrust

Food, Water, & Land

Synergetic LLC logo

Synergetic LLC

Energy & Power

Synergetic — facilitates infrastructure solutions that unlock and unleash the power of renewables and eliminate or minimize obstacles to rapid renewable energy development and use in congested electricity markets.

SRECTrade logo

SRECTrade

Energy & Power

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

GreenLIB logo

GreenLIB

Manufacturing & Processing

Ebb Carbon logo

Ebb Carbon

Food, Water, & Land

Ebb Carbon — removes atmospheric CO2 and reduces ocean acidification. Using a proprietary electrochemical system to separate acid out of salty water, Ebb de-acidifies the ocean and enhances its natural ability to capture CO2 from the air and store it safely and stably as bicarbonate for at least 10,000 years.

Open Ocean Robotics logo

Open Ocean Robotics

Energy & Power

Geckskin logo

Geckskin

Manufacturing & Processing

Felixfusion logo

Felixfusion

Corrolytics logo

Corrolytics

Energy & Power

Patented corrosion intelligence platform delivering near real-time corrosion detection and actionable insights

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.

ETAK logo

ETAK

ETAK transforms waste into clean energy. Our modular technology converts unsorted municipal and industrial waste into high-calorific gas, offering a decentralized, 24/7 alternative to fossil fuels and traditional incineration.

Terralytiq logo

Terralytiq

Manufacturing & Processing

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

Wellbore Consultants logo

Wellbore Consultants

Energy & Power

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

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.

Raptor Maps logo

Raptor Maps

Energy & Power

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

Tycho Solutions logo

Tycho Solutions

Energy & Power

Eden GeoPower logo

Eden GeoPower

Energy & Power

Electrical Reservoir Stimulation to enhance subsurface permeability

Eclipse Solar Projects logo

Eclipse Solar Projects

Energy & Power

Eclipse Solar Projects is a developer of utility-scale solar assets that generates, and then sells, power/electricity wholesale.

Starfield logo

Starfield

Food, Water, & Land

PooPoof Inc logo

PooPoof Inc

Food, Water, & Land

The world’s first pocket-sized bioreactor

Beantrust logo

Beantrust

Food, Water, & Land

Synergetic LLC logo

Synergetic LLC

Energy & Power

Synergetic — facilitates infrastructure solutions that unlock and unleash the power of renewables and eliminate or minimize obstacles to rapid renewable energy development and use in congested electricity markets.

SRECTrade logo

SRECTrade

Energy & Power

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

GreenLIB logo

GreenLIB

Manufacturing & Processing

Ebb Carbon logo

Ebb Carbon

Food, Water, & Land

Ebb Carbon — removes atmospheric CO2 and reduces ocean acidification. Using a proprietary electrochemical system to separate acid out of salty water, Ebb de-acidifies the ocean and enhances its natural ability to capture CO2 from the air and store it safely and stably as bicarbonate for at least 10,000 years.

Open Ocean Robotics logo

Open Ocean Robotics

Energy & Power

Geckskin logo

Geckskin

Manufacturing & Processing

Felixfusion logo

Felixfusion

Corrolytics logo

Corrolytics

Energy & Power

Patented corrosion intelligence platform delivering near real-time corrosion detection and actionable insights

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.

ETAK logo

ETAK

ETAK transforms waste into clean energy. Our modular technology converts unsorted municipal and industrial waste into high-calorific gas, offering a decentralized, 24/7 alternative to fossil fuels and traditional incineration.

Noir3 Energy logo

Noir3 Energy

Energy & Power

Noir3 Energy, LLC is partnered with Sonnen, a Shell New Energies company to pave the way for the Texas Energy Transition by deploying the VPP( Virtual Power Plant) concept within the multifamily, commercial & Industrial building spaces with a no money down approach that benefits all parties involved from families to the building owners.

R3 Energy logo

R3 Energy

Energy & Power

RailState logo

RailState

Transportation & Logistics

RailState — answers an increasing demand among freight customers, commodity traders, financial analysts, and government agencies for more current and granular visibility on railway volumes, performance, and condition.

Lite-1 logo

Lite-1

Manufacturing & Processing

Clean, scalable, microbe-made colour to replace toxic dyes

EQORE logo

EQORE

EQORE is an end-to-end provider of intelligent and autonomous energy storage for commercial and industrial facilities, aimed at minimizing their electricity costs. By offering unprecedented ROIs, EQORE makes adding distributed storage to the grid financially attractive, promoting grid resilience while supporting businesses.

AquaNRG logo

AquaNRG

Energy & Power

AquaNRG is provider of advanced technologies for subsurface energy and environmental applications. AquaNRG's technology has been funded through $1.4M grants by the US Department of Energy and National Science Foundation.

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.

Littoral Power Systems logo

Littoral Power Systems

Energy & Power

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

Altitude logo

Altitude

Altitude (subsidiary of Accenture) — is a privately held product design and innovation firm based in Boston that uses its expertise in consumer insight, design and product engineering to help companies innovate and develop new physical products and services.

Alma Energy logo

Alma Energy

Energy & Power

Geothermal exploration to deliver scaled renewable energy production at economic levels

Desktop Health logo

Desktop Health

Manufacturing & Processing

Desktop Health (formerly Beacon Bio) — is designing biodegradable and biomimetic tissue grafts using novel materials science and 3D printing technologies.

BlueTec Energy logo

BlueTec Energy

Energy & Power

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.

CarbonFree logo

CarbonFree

Manufacturing & Processing

ALLY Energy logo

ALLY Energy

Infrastructure & Construction

ALLY Energy — is an energy tech and human capital services company that offers packaged services and bespoke offerings such as talent engagement, culture development and design, recruitment training and coaching, and consulting.

BERKM logo

BERKM

Manufacturing & Processing

Ranger Solar logo

Ranger Solar

Energy & Power

Altaeros logo

Altaeros

Energy & Power

Folia Materials logo

Folia Materials

Manufacturing & Processing

Folia Materials — is creating a safer, cleaner, and healthier world with its antiviral paper.

Medley Thermal logo

Medley Thermal

Energy & Power

Medley Thermal — links clean, cheap power to steam heating systems, lowering a customer's energy costs and carbon emissions.

Noir3 Energy logo

Noir3 Energy

Energy & Power

Noir3 Energy, LLC is partnered with Sonnen, a Shell New Energies company to pave the way for the Texas Energy Transition by deploying the VPP( Virtual Power Plant) concept within the multifamily, commercial & Industrial building spaces with a no money down approach that benefits all parties involved from families to the building owners.

R3 Energy logo

R3 Energy

Energy & Power

RailState logo

RailState

Transportation & Logistics

RailState — answers an increasing demand among freight customers, commodity traders, financial analysts, and government agencies for more current and granular visibility on railway volumes, performance, and condition.

Lite-1 logo

Lite-1

Manufacturing & Processing

Clean, scalable, microbe-made colour to replace toxic dyes

EQORE logo

EQORE

EQORE is an end-to-end provider of intelligent and autonomous energy storage for commercial and industrial facilities, aimed at minimizing their electricity costs. By offering unprecedented ROIs, EQORE makes adding distributed storage to the grid financially attractive, promoting grid resilience while supporting businesses.

AquaNRG logo

AquaNRG

Energy & Power

AquaNRG is provider of advanced technologies for subsurface energy and environmental applications. AquaNRG's technology has been funded through $1.4M grants by the US Department of Energy and National Science Foundation.

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.

Littoral Power Systems logo

Littoral Power Systems

Energy & Power

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

Altitude logo

Altitude

Altitude (subsidiary of Accenture) — is a privately held product design and innovation firm based in Boston that uses its expertise in consumer insight, design and product engineering to help companies innovate and develop new physical products and services.

Alma Energy logo

Alma Energy

Energy & Power

Geothermal exploration to deliver scaled renewable energy production at economic levels

Desktop Health logo

Desktop Health

Manufacturing & Processing

Desktop Health (formerly Beacon Bio) — is designing biodegradable and biomimetic tissue grafts using novel materials science and 3D printing technologies.

BlueTec Energy logo

BlueTec Energy

Energy & Power

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.

CarbonFree logo

CarbonFree

Manufacturing & Processing

ALLY Energy logo

ALLY Energy

Infrastructure & Construction

ALLY Energy — is an energy tech and human capital services company that offers packaged services and bespoke offerings such as talent engagement, culture development and design, recruitment training and coaching, and consulting.

BERKM logo

BERKM

Manufacturing & Processing

Ranger Solar logo

Ranger Solar

Energy & Power

Altaeros logo

Altaeros

Energy & Power

Folia Materials logo

Folia Materials

Manufacturing & Processing

Folia Materials — is creating a safer, cleaner, and healthier world with its antiviral paper.

Medley Thermal logo

Medley Thermal

Energy & Power

Medley Thermal — links clean, cheap power to steam heating systems, lowering a customer's energy costs and carbon emissions.

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