Helping climatetech startupsTransformindustry

[ 02 ]Our Startups

Our Member Companies

View All Startups
BlakBear logo

BlakBear

Food, Water, & Land

Universal Matter Inc. logo

Universal Matter Inc.

Manufacturing & Processing

Producing graphene from carbon waste streams

Carbion logo

Carbion

Manufacturing & Processing

Affordable and clean biomass transformation to graphite for batteries

SRECTrade logo

SRECTrade

Energy & Power

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

Elemental Advanced Materials logo

Elemental Advanced Materials

Manufacturing & Processing

Graphene and hydrogen from mixed and contaminated waste plastics and other organic materials

Innoveering logo

Innoveering

Manufacturing & Processing

XTPL logo

XTPL

Manufacturing & Processing

Additive manufacturing technology for ultra-precise printing of nanomaterials

Save Energy Systems logo

Save Energy Systems

Infrastructure & Construction

Puro Renewables logo

Puro Renewables

Manufacturing & Processing

Puro Renewables (Miami Beach, FL) upcycles carbon-negative biowaste for use in reducing the amount of fossil-fuel-based resin and carbon footprint in typical plastic products.

LOCOAL logo

LOCOAL

Manufacturing & Processing

Turning waste into value, and producing clean energy, biofuels, and carbon credits

Axiom Optics logo

Axiom Optics

Manufacturing & Processing

Axiom Optics — provides optical instrumentation for fundamental sciences (astronomy, physics, biology) and industrial quality control.

Circularise logo

Circularise

Manufacturing & Processing

New Mantle Technologies logo

New Mantle Technologies

Energy & Power

Subsurface characterization with physics and AI

Eden GeoPower logo

Eden GeoPower

Energy & Power

Electrical Reservoir Stimulation to enhance subsurface permeability

Regenerative Resources logo

Regenerative Resources

Food, Water, & Land

Regenerative Resources — is an ecosystems services company that acquires highly-degraded land and transforms it in order to reuse it for aquaculture.

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.

Licube logo

Licube

Manufacturing & Processing

Sustainable lithium recovery through electrodialysis

Quantum New Energy logo

Quantum New Energy

Infrastructure & Construction

Quantum New Energy’s platform, EnerWisely, is a science-based solution that integrates IoT with data analytics and behavioral science. Quantum New Energy helps users transform their unused energy consumption data into personalized, actionable insights to maximize their monetary savings and reduce their environmental impacts.

REI logo

REI

Energy & Power

Radical Plastics logo

Radical Plastics

Manufacturing & Processing

Radical Plastics — is commercializing a patented technology for producing economical, biodegradable plastics that are a drop-in replacement for conventional, persistent plastics.

BlakBear logo

BlakBear

Food, Water, & Land

Universal Matter Inc. logo

Universal Matter Inc.

Manufacturing & Processing

Producing graphene from carbon waste streams

Carbion logo

Carbion

Manufacturing & Processing

Affordable and clean biomass transformation to graphite for batteries

SRECTrade logo

SRECTrade

Energy & Power

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

Elemental Advanced Materials logo

Elemental Advanced Materials

Manufacturing & Processing

Graphene and hydrogen from mixed and contaminated waste plastics and other organic materials

Innoveering logo

Innoveering

Manufacturing & Processing

XTPL logo

XTPL

Manufacturing & Processing

Additive manufacturing technology for ultra-precise printing of nanomaterials

Save Energy Systems logo

Save Energy Systems

Infrastructure & Construction

Puro Renewables logo

Puro Renewables

Manufacturing & Processing

Puro Renewables (Miami Beach, FL) upcycles carbon-negative biowaste for use in reducing the amount of fossil-fuel-based resin and carbon footprint in typical plastic products.

LOCOAL logo

LOCOAL

Manufacturing & Processing

Turning waste into value, and producing clean energy, biofuels, and carbon credits

Axiom Optics logo

Axiom Optics

Manufacturing & Processing

Axiom Optics — provides optical instrumentation for fundamental sciences (astronomy, physics, biology) and industrial quality control.

Circularise logo

Circularise

Manufacturing & Processing

New Mantle Technologies logo

New Mantle Technologies

Energy & Power

Subsurface characterization with physics and AI

Eden GeoPower logo

Eden GeoPower

Energy & Power

Electrical Reservoir Stimulation to enhance subsurface permeability

Regenerative Resources logo

Regenerative Resources

Food, Water, & Land

Regenerative Resources — is an ecosystems services company that acquires highly-degraded land and transforms it in order to reuse it for aquaculture.

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.

Licube logo

Licube

Manufacturing & Processing

Sustainable lithium recovery through electrodialysis

Quantum New Energy logo

Quantum New Energy

Infrastructure & Construction

Quantum New Energy’s platform, EnerWisely, is a science-based solution that integrates IoT with data analytics and behavioral science. Quantum New Energy helps users transform their unused energy consumption data into personalized, actionable insights to maximize their monetary savings and reduce their environmental impacts.

REI logo

REI

Energy & Power

Radical Plastics logo

Radical Plastics

Manufacturing & Processing

Radical Plastics — is commercializing a patented technology for producing economical, biodegradable plastics that are a drop-in replacement for conventional, persistent plastics.

Moment Energy logo

Moment Energy

Energy & Power

SensorEra logo

SensorEra

Food, Water, & Land

SensorEra — provides real time induced seismic monitoring service for unconventional oil and gas production, salt water disposal and carbon injection and sequestration for CCUS.

Glimpse Engineering logo

Glimpse Engineering

Manufacturing & Processing

Visualizing battery scans and continuously monitoring key battery-design features

AllSpice.io logo

AllSpice.io

Infrastructure & Construction

A collaboration hub for hardware teams with revision control, design reviews, and releases

HarvestAi logo

HarvestAi

Food, Water, & Land

Computer vision and AI to provide greenhouse operators with automated data for optimized harvest planning

Elios logo

Elios

Energy & Power

Mitico logo

Mitico

Energy & Power

C-Quester delivers a solution for carbon capture using dry granular metal carbonate (GMC) purification technology with integrated measurement, reporting, and verification.

Andros Innovations logo

Andros Innovations

Manufacturing & Processing

Reducing the costs and energy demands of ammonia production through advanced reactor technology

Arista Solutions logo

Arista Solutions

SpringCycle Energy logo

SpringCycle Energy

Energy & Power

Rechargeable iron fuel to transform solar into baseload power

PlaSene logo

PlaSene

Manufacturing & Processing

Converting plastic waste into liquid fuel and low-carbon hydrogen

Forty Acres Consulting logo

Forty Acres Consulting

Transportation & Logistics

Forty Acres Consulting — consults for both large Fortune 500 companies and startups big and small. They specialize in scaling, supply chain, logistics, business development and healthcare.

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.

Solidec logo

Solidec

Manufacturing & Processing

Using air, water, and electricity, Solidec generates the world's most essential chemicals, on-site and on-demand.

SpadXTech logo

SpadXTech

Food, Water, & Land

SpadXTech — seeks to significantly reduce CO2 emissions through the manufacturing of various carbon negative cellulose-based materials.

InnoSepra logo

InnoSepra

Energy & Power

Elementium Materials logo

Elementium Materials

Energy & Power

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

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!

MicroAvionics logo

MicroAvionics

Transportation & Logistics

Haffner Energy logo

Haffner Energy

Energy & Power

Producing renewable energy via waste-biomass thermolysis

Moment Energy logo

Moment Energy

Energy & Power

SensorEra logo

SensorEra

Food, Water, & Land

SensorEra — provides real time induced seismic monitoring service for unconventional oil and gas production, salt water disposal and carbon injection and sequestration for CCUS.

Glimpse Engineering logo

Glimpse Engineering

Manufacturing & Processing

Visualizing battery scans and continuously monitoring key battery-design features

AllSpice.io logo

AllSpice.io

Infrastructure & Construction

A collaboration hub for hardware teams with revision control, design reviews, and releases

HarvestAi logo

HarvestAi

Food, Water, & Land

Computer vision and AI to provide greenhouse operators with automated data for optimized harvest planning

Elios logo

Elios

Energy & Power

Mitico logo

Mitico

Energy & Power

C-Quester delivers a solution for carbon capture using dry granular metal carbonate (GMC) purification technology with integrated measurement, reporting, and verification.

Andros Innovations logo

Andros Innovations

Manufacturing & Processing

Reducing the costs and energy demands of ammonia production through advanced reactor technology

Arista Solutions logo

Arista Solutions

SpringCycle Energy logo

SpringCycle Energy

Energy & Power

Rechargeable iron fuel to transform solar into baseload power

PlaSene logo

PlaSene

Manufacturing & Processing

Converting plastic waste into liquid fuel and low-carbon hydrogen

Forty Acres Consulting logo

Forty Acres Consulting

Transportation & Logistics

Forty Acres Consulting — consults for both large Fortune 500 companies and startups big and small. They specialize in scaling, supply chain, logistics, business development and healthcare.

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.

Solidec logo

Solidec

Manufacturing & Processing

Using air, water, and electricity, Solidec generates the world's most essential chemicals, on-site and on-demand.

SpadXTech logo

SpadXTech

Food, Water, & Land

SpadXTech — seeks to significantly reduce CO2 emissions through the manufacturing of various carbon negative cellulose-based materials.

InnoSepra logo

InnoSepra

Energy & Power

Elementium Materials logo

Elementium Materials

Energy & Power

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

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!

MicroAvionics logo

MicroAvionics

Transportation & Logistics

Haffner Energy logo

Haffner Energy

Energy & Power

Producing renewable energy via waste-biomass thermolysis

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