Helping climatetech startupsTransformindustry faster

It's Electric
Infrastructure & Construction
it's electric accelerates the adoption of EVs with a scalable and simple Level-2 curbside charging solution, ensuring that every community has access to clean, sustainable transportation options. it's electric's "behind the meter" approach simplifies the installation process by eliminating the need for utility coordination, and is the first in the country to offer EVSE hardware with a detachable cord.

JURA Bio
Food, Water, & Land

CeraPhi Energy
Energy & Power
CeraPhi Energy — is a geothermal energy company developing a “plug and play” scalable technology platform.

Pika Energy
Energy & Power

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

Tagup
Manufacturing & Processing
Tagup — has developed new machine learning methods and a software platform to predict industrial equipment failure, making physical infrastructure safer and more reliable.

RepAir Carbon
Manufacturing & Processing
RepAir - the most efficient, scalable and affordable carbon capture solution, designed for the gigaton scale

Piaggio Fast Forward
Transportation & Logistics

Malta
Energy & Power

Starfield
Food, Water, & Land

Loop Chemicals
Manufacturing & Processing
Enabling localized production of ammonia at competitive prices and zero carbon footprint.

Spec Sensors LLC
Energy & Power

Packwise
Manufacturing & Processing
IIoT sensors combined with a software and analytics platform to optimize industrial supply chains

EarthEn
Energy & Power
Enabling electrification through CO₂-based thermodynamic cycle

DIOXYCLE
Manufacturing & Processing
DIOXYCLE — is building an electrolysis platform to convert carbon emissions into chemicals and fuel building blocks.

Phlair
Manufacturing & Processing
Renewable-energy-powered DAC system using an electrochemical process for acid and base generation

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.

Fleet Robotics
Transportation & Logistics
Robotics to clean biofouling from ship hulls, improving fuel consumption for large ships

Adaion
Energy & Power
AI-driven grid optimization & integrated system planning platform

Tomra Systems
Manufacturing & Processing

It's Electric
Infrastructure & Construction
it's electric accelerates the adoption of EVs with a scalable and simple Level-2 curbside charging solution, ensuring that every community has access to clean, sustainable transportation options. it's electric's "behind the meter" approach simplifies the installation process by eliminating the need for utility coordination, and is the first in the country to offer EVSE hardware with a detachable cord.

JURA Bio
Food, Water, & Land

CeraPhi Energy
Energy & Power
CeraPhi Energy — is a geothermal energy company developing a “plug and play” scalable technology platform.

Pika Energy
Energy & Power

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

Tagup
Manufacturing & Processing
Tagup — has developed new machine learning methods and a software platform to predict industrial equipment failure, making physical infrastructure safer and more reliable.

RepAir Carbon
Manufacturing & Processing
RepAir - the most efficient, scalable and affordable carbon capture solution, designed for the gigaton scale

Piaggio Fast Forward
Transportation & Logistics

Malta
Energy & Power

Starfield
Food, Water, & Land

Loop Chemicals
Manufacturing & Processing
Enabling localized production of ammonia at competitive prices and zero carbon footprint.

Spec Sensors LLC
Energy & Power

Packwise
Manufacturing & Processing
IIoT sensors combined with a software and analytics platform to optimize industrial supply chains

EarthEn
Energy & Power
Enabling electrification through CO₂-based thermodynamic cycle

DIOXYCLE
Manufacturing & Processing
DIOXYCLE — is building an electrolysis platform to convert carbon emissions into chemicals and fuel building blocks.

Phlair
Manufacturing & Processing
Renewable-energy-powered DAC system using an electrochemical process for acid and base generation

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.

Fleet Robotics
Transportation & Logistics
Robotics to clean biofouling from ship hulls, improving fuel consumption for large ships

Adaion
Energy & Power
AI-driven grid optimization & integrated system planning platform

Tomra Systems
Manufacturing & Processing

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

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.

TransOceans Clean Energy Risk, LLC
Energy & Power
Risk management solutions for global clean tech risk portfolios

CLS Wind
Energy & Power
Self-erecting system for installing wind turbines

Laminar
Manufacturing & Processing
IoT platform optimizing industrial liquid and fluid systems in supply chain, manufacturing, and data centers

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.

Arco Technologies Inc
Energy & Power
Arco Technologies Inc — has 23 years of experience in the electrochemistry industry, developing fuel cells and electrolyzers.

Carbonbase

Circulus Air
Infrastructure & Construction
Clean air systems to directly remove harmful gases and pollutants

Pike Robotics
Energy & Power
Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces

Kornit Digital
Manufacturing & Processing
Kornit Digital (formerly Voxel8) — is developing digital manufacturing systems that revolutionize how footwear and athletic apparel are designed, manufactured, and delivered to consumers.

Building Envelope Materials
Infrastructure & Construction

Mass Magnetics
Manufacturing & Processing
MECo specializes in the automated manufacture of structured functional materials for magnetic and electrochemical applications.

Revora Materials
Energy & Power
Carbon-mineralization technology with high-value minerals and metals recovery

NeuraliX
Energy & Power
AI solutions to optimize operations and reduce emissions for the energy and manufacturing sectors

M2X Energy
Manufacturing & Processing

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.

Boronite
Manufacturing & Processing

MagDrive Technologies Inc.
Manufacturing & Processing
Eliminating fugitive emissions and delivering zero-leak performance and durability

WattSto Energy
Energy & Power
We are a leading manufacturer of Long Duration Energy Storage (LDES) and Unique Hybrid Design System, providing Fast, Long Duration, Safe, Sustainable, and Cost-effective energy storage solutions at the microgrid and grid levels. Our innovative technology accelerates the integration of renewable energy, reduces carbon emissions, and provides power for a cleaner future.

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

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.

TransOceans Clean Energy Risk, LLC
Energy & Power
Risk management solutions for global clean tech risk portfolios

CLS Wind
Energy & Power
Self-erecting system for installing wind turbines

Laminar
Manufacturing & Processing
IoT platform optimizing industrial liquid and fluid systems in supply chain, manufacturing, and data centers

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.

Arco Technologies Inc
Energy & Power
Arco Technologies Inc — has 23 years of experience in the electrochemistry industry, developing fuel cells and electrolyzers.

Carbonbase

Circulus Air
Infrastructure & Construction
Clean air systems to directly remove harmful gases and pollutants

Pike Robotics
Energy & Power
Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces

Kornit Digital
Manufacturing & Processing
Kornit Digital (formerly Voxel8) — is developing digital manufacturing systems that revolutionize how footwear and athletic apparel are designed, manufactured, and delivered to consumers.

Building Envelope Materials
Infrastructure & Construction

Mass Magnetics
Manufacturing & Processing
MECo specializes in the automated manufacture of structured functional materials for magnetic and electrochemical applications.

Revora Materials
Energy & Power
Carbon-mineralization technology with high-value minerals and metals recovery

NeuraliX
Energy & Power
AI solutions to optimize operations and reduce emissions for the energy and manufacturing sectors

M2X Energy
Manufacturing & Processing

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.

Boronite
Manufacturing & Processing

MagDrive Technologies Inc.
Manufacturing & Processing
Eliminating fugitive emissions and delivering zero-leak performance and durability

WattSto Energy
Energy & Power
We are a leading manufacturer of Long Duration Energy Storage (LDES) and Unique Hybrid Design System, providing Fast, Long Duration, Safe, Sustainable, and Cost-effective energy storage solutions at the microgrid and grid levels. Our innovative technology accelerates the integration of renewable energy, reduces carbon emissions, and provides power for a cleaner future.




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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