Helping climatetech startupsTransformindustry faster

Emrod
Energy & Power
Sustainable power with long-range wireless power transfer technology

Newfound Materials
Manufacturing & Processing
The synthesis design layer for making new materials.

PV Nano Cell
Energy & Power
Advanced nano conductive pastes enabling finer, faster, and more efficient metallization for next-gen solar cells

American Battery Technology Company
Energy & Power
Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company

Footprint

Heila Technologies
Energy & Power
Heila Technologies — has developed the next generation of optimization and aggregation technologies for DERs to help accelerate the adoption of clean energy.

CERT Systems
Manufacturing & Processing

enaDyne
Manufacturing & Processing
enaDyne — develops non-thermal plasma catalysis reactors to convert CO2 into chemicals and fuels.

LA NPDT

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.

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

REI
Energy & Power

Phoenix Tailings
Manufacturing & Processing
Waste-free, net-zero, cost-competitive rare-earth-metal refining

Sweetch Energy
Energy & Power
Membrane-based technology that taps into osmotic power

eSki Watercraft
Energy & Power
Electric personal watercraft

Candid Intelligence
Infrastructure & Construction
Accelerating pre-construction engineering with Agentic AI

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.

Florrent
Food, Water, & Land
High-energy-density supercapacitors for energy storage, made from domestic biomass waste

frakktal
Manufacturing & Processing
Biobased polymer process to upend PVC overuse

Adiabatic Materials
Manufacturing & Processing
Unlocking clean, affordable chemical production with electricity

Emrod
Energy & Power
Sustainable power with long-range wireless power transfer technology

Newfound Materials
Manufacturing & Processing
The synthesis design layer for making new materials.

PV Nano Cell
Energy & Power
Advanced nano conductive pastes enabling finer, faster, and more efficient metallization for next-gen solar cells

American Battery Technology Company
Energy & Power
Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company

Footprint

Heila Technologies
Energy & Power
Heila Technologies — has developed the next generation of optimization and aggregation technologies for DERs to help accelerate the adoption of clean energy.

CERT Systems
Manufacturing & Processing

enaDyne
Manufacturing & Processing
enaDyne — develops non-thermal plasma catalysis reactors to convert CO2 into chemicals and fuels.

LA NPDT

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.

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

REI
Energy & Power

Phoenix Tailings
Manufacturing & Processing
Waste-free, net-zero, cost-competitive rare-earth-metal refining

Sweetch Energy
Energy & Power
Membrane-based technology that taps into osmotic power

eSki Watercraft
Energy & Power
Electric personal watercraft

Candid Intelligence
Infrastructure & Construction
Accelerating pre-construction engineering with Agentic AI

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.

Florrent
Food, Water, & Land
High-energy-density supercapacitors for energy storage, made from domestic biomass waste

frakktal
Manufacturing & Processing
Biobased polymer process to upend PVC overuse

Adiabatic Materials
Manufacturing & Processing
Unlocking clean, affordable chemical production with electricity

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

Sunwealth
Energy & Power

PolyJoule
Energy & Power
PolyJoule — develops low-cost, high-power energy storage designed to strengthen the power grid.

Reverse Energy Solutions
Transportation & Logistics
Our startup implements innovative mobile solutions for solar panel recycling, drastically reducing logistic costs by 90% through streamlined collection and transportation processes.

ZwitterCo
Food, Water, & Land
Nanofiltration membranes for wastewater treatment with unprecedented fouling-resistance and size-selectivity.

Infinite Cooling
Infrastructure & Construction
Infinite Cooling — reduces water consumption in industrial plants by capturing cooling tower plumes. The company has a patent-pending technology developed at MIT that uses electric fields to capture water from the plumes leaving cooling towers.

Verde Technologies
Energy & Power
Lightweight, flexible perovskite solar panels for mass industrial and commercial adoption

Enersion
Energy & Power

Mantel
Manufacturing & Processing
Mantel — is developing the most thermally efficient and lowest cost carbon capture technology - helping the world reduce atmospheric CO2 levels.

Agrilab Technologies Inc.
Food, Water, & Land
Modular compost-aeration and heat-recovery systems

Pressure Core
Manufacturing & Processing
Pressure Core — is a development company focused on transforming industrial waste pressure into emission-free power. The company simplifies project development for host facilities by offering to buy their waste stream instead of selling them a project.

Keystone Tower Systems
Energy & Power

De-Ice
Transportation & Logistics
Electric de-icing technology designed to help the aerospace industry eliminate all chemicals

Verdox Inc
Manufacturing & Processing
Verdox — is making scalable, cost-effective carbon capture and removal a reality. Founded in late 2019 by Dr. Brian Baynes, Prof. T. Alan Hatton, and Dr. Sahag Voskian, the company is commercializing its electroswing adsorption (ESA) platform technology, originally developed at MIT, to remove carbon dioxide from industrial emissions and the air with 70% energy savings versus conventional approaches.

Vertical Semiconductor
Energy & Power
Power supply units designed to unleash the full potential of AI & HPC

R3 Energy
Energy & Power

Sparkplug Power
Energy & Power
Energy-storage-as-a-service for municipal utilities and commercial businesses

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

Carbonova
Manufacturing & Processing
Carbonova has a unique solution to solidify carbon emissions and lock them permanently in solid carbon nanofibers. To date, 2980 businesses and financial institutions are taking action toward net-zero emissions by 2040 working with the Science-Based Targets initiative (SBTi). Our solution monetizes carbon emissions into solid carbon for our everyday products such as building materials and plastics. Currently solid carbon is extracted from naturally occurring and confined resources such as graphite or oils.

Topl
Infrastructure & Construction
Topl is an impact technology company building a blockchain that empowers businesses to prove and monetize ethical and sustainable practices.

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

Sunwealth
Energy & Power

PolyJoule
Energy & Power
PolyJoule — develops low-cost, high-power energy storage designed to strengthen the power grid.

Reverse Energy Solutions
Transportation & Logistics
Our startup implements innovative mobile solutions for solar panel recycling, drastically reducing logistic costs by 90% through streamlined collection and transportation processes.

ZwitterCo
Food, Water, & Land
Nanofiltration membranes for wastewater treatment with unprecedented fouling-resistance and size-selectivity.

Infinite Cooling
Infrastructure & Construction
Infinite Cooling — reduces water consumption in industrial plants by capturing cooling tower plumes. The company has a patent-pending technology developed at MIT that uses electric fields to capture water from the plumes leaving cooling towers.

Verde Technologies
Energy & Power
Lightweight, flexible perovskite solar panels for mass industrial and commercial adoption

Enersion
Energy & Power

Mantel
Manufacturing & Processing
Mantel — is developing the most thermally efficient and lowest cost carbon capture technology - helping the world reduce atmospheric CO2 levels.

Agrilab Technologies Inc.
Food, Water, & Land
Modular compost-aeration and heat-recovery systems

Pressure Core
Manufacturing & Processing
Pressure Core — is a development company focused on transforming industrial waste pressure into emission-free power. The company simplifies project development for host facilities by offering to buy their waste stream instead of selling them a project.

Keystone Tower Systems
Energy & Power

De-Ice
Transportation & Logistics
Electric de-icing technology designed to help the aerospace industry eliminate all chemicals

Verdox Inc
Manufacturing & Processing
Verdox — is making scalable, cost-effective carbon capture and removal a reality. Founded in late 2019 by Dr. Brian Baynes, Prof. T. Alan Hatton, and Dr. Sahag Voskian, the company is commercializing its electroswing adsorption (ESA) platform technology, originally developed at MIT, to remove carbon dioxide from industrial emissions and the air with 70% energy savings versus conventional approaches.

Vertical Semiconductor
Energy & Power
Power supply units designed to unleash the full potential of AI & HPC

R3 Energy
Energy & Power

Sparkplug Power
Energy & Power
Energy-storage-as-a-service for municipal utilities and commercial businesses

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

Carbonova
Manufacturing & Processing
Carbonova has a unique solution to solidify carbon emissions and lock them permanently in solid carbon nanofibers. To date, 2980 businesses and financial institutions are taking action toward net-zero emissions by 2040 working with the Science-Based Targets initiative (SBTi). Our solution monetizes carbon emissions into solid carbon for our everyday products such as building materials and plastics. Currently solid carbon is extracted from naturally occurring and confined resources such as graphite or oils.

Topl
Infrastructure & Construction
Topl is an impact technology company building a blockchain that empowers businesses to prove and monetize ethical and sustainable practices.




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
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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
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