Helping climatetech startupsTransformindustry faster

BlakBear
Food, Water, & Land

Universal Matter Inc.
Manufacturing & Processing
Producing graphene from carbon waste streams

Carbion
Manufacturing & Processing
Affordable and clean biomass transformation to graphite for batteries

SRECTrade
Energy & Power
Management and transaction platform for environmental commodities to reduce costs and increase transparency

Elemental Advanced Materials
Manufacturing & Processing
Graphene and hydrogen from mixed and contaminated waste plastics and other organic materials

Innoveering
Manufacturing & Processing

XTPL
Manufacturing & Processing
Additive manufacturing technology for ultra-precise printing of nanomaterials

Save Energy Systems
Infrastructure & Construction

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

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

Circularise
Manufacturing & Processing

New Mantle Technologies
Energy & Power
Subsurface characterization with physics and AI

Eden GeoPower
Energy & Power
Electrical Reservoir Stimulation to enhance subsurface permeability

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
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
Manufacturing & Processing
Sustainable lithium recovery through electrodialysis

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
Energy & Power

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
Food, Water, & Land

Universal Matter Inc.
Manufacturing & Processing
Producing graphene from carbon waste streams

Carbion
Manufacturing & Processing
Affordable and clean biomass transformation to graphite for batteries

SRECTrade
Energy & Power
Management and transaction platform for environmental commodities to reduce costs and increase transparency

Elemental Advanced Materials
Manufacturing & Processing
Graphene and hydrogen from mixed and contaminated waste plastics and other organic materials

Innoveering
Manufacturing & Processing

XTPL
Manufacturing & Processing
Additive manufacturing technology for ultra-precise printing of nanomaterials

Save Energy Systems
Infrastructure & Construction

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

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

Circularise
Manufacturing & Processing

New Mantle Technologies
Energy & Power
Subsurface characterization with physics and AI

Eden GeoPower
Energy & Power
Electrical Reservoir Stimulation to enhance subsurface permeability

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
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
Manufacturing & Processing
Sustainable lithium recovery through electrodialysis

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
Energy & Power

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
Energy & Power

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
Manufacturing & Processing
Visualizing battery scans and continuously monitoring key battery-design features

AllSpice.io
Infrastructure & Construction
A collaboration hub for hardware teams with revision control, design reviews, and releases

HarvestAi
Food, Water, & Land
Computer vision and AI to provide greenhouse operators with automated data for optimized harvest planning

Elios
Energy & Power

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

Arista Solutions

SpringCycle Energy
Energy & Power
Rechargeable iron fuel to transform solar into baseload power

PlaSene
Manufacturing & Processing
Converting plastic waste into liquid fuel and low-carbon hydrogen

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
Energy & Power
Noteworthy AI — helps electric utilities increase the reliability, resiliency and safety of the distribution grid while reducing cost.

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

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

InnoSepra
Energy & Power

Elementium Materials
Energy & Power
Battery-electrolyte technology that unlocks affordable, lightweight, long-lasting, intrinsically safe batteries

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
Transportation & Logistics

Haffner Energy
Energy & Power
Producing renewable energy via waste-biomass thermolysis

Moment Energy
Energy & Power

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
Manufacturing & Processing
Visualizing battery scans and continuously monitoring key battery-design features

AllSpice.io
Infrastructure & Construction
A collaboration hub for hardware teams with revision control, design reviews, and releases

HarvestAi
Food, Water, & Land
Computer vision and AI to provide greenhouse operators with automated data for optimized harvest planning

Elios
Energy & Power

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

Arista Solutions

SpringCycle Energy
Energy & Power
Rechargeable iron fuel to transform solar into baseload power

PlaSene
Manufacturing & Processing
Converting plastic waste into liquid fuel and low-carbon hydrogen

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
Energy & Power
Noteworthy AI — helps electric utilities increase the reliability, resiliency and safety of the distribution grid while reducing cost.

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

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

InnoSepra
Energy & Power

Elementium Materials
Energy & Power
Battery-electrolyte technology that unlocks affordable, lightweight, long-lasting, intrinsically safe batteries

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
Transportation & Logistics

Haffner Energy
Energy & Power
Producing renewable energy via waste-biomass thermolysis




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.
Our Startups Have Raised Over $0B
All-time
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Currently home to
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Startups Operate
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New Jobs Created by Our Members, and Counting
Startups bring the breakthroughs. Corporate partners bring the scale, infrastructure, expertise, and capital to make them matter.
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.


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.

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.

Explore Investing
Tap into deal flow with the world’s largest community of climate and energy startups.






















