Helping entrepreneursTransformindustry

Greentown member working in a wet lab
Greentown community members collaborating
Greentown member pipetting in a lab
Greentown members at work in the incubator
[ 01 ]Who We Are

Breakthroughs don't scale in isolation.

They scale when entire ecosystems move together: founders, corporates, capital, policy, and communities, united by a shared purpose of propelling groundbreaking technologies to market, at the pace the world requires.

Transforming the systems that power, move, feed, and connect the world is the work of our time, and startups hold the key.

Our Vision

Greentown is a 501(c)(3) non-profit organization

[ 03 ]Our Startups

Our Member Companies

View All Startups
frakktal logo

frakktal

Manufacturing & Processing

Biobased polymer process to upend PVC overuse

Torres Orbital Mining Inc (TOM) logo

Torres Orbital Mining Inc (TOM)

Infrastructure & Construction

Autonomous lunar excavation systems for dust-free regolith mining and space operations

Aramco Ventures (Member Account) logo

Aramco Ventures (Member Account)

Energy & Power

Strategic technology-venturing program of Saudi Aramco

Anvil Capture Systems logo

Anvil Capture Systems

Manufacturing & Processing

CO2 direct air mineralization process, delivering carbon dioxide removal

Florrent logo

Florrent

Food, Water, & Land

High-energy-density supercapacitors for energy storage, made from domestic biomass waste

Monaire logo

Monaire

Infrastructure & Construction

Reducing HVAC energy use and repair costs for small commercial buildings

Onboard Data logo

Onboard Data

Infrastructure & Construction

Onboard — offers software analytics for HVAC service providers.

REON Technology logo

REON Technology

Energy & Power

AI-driven optimization of systems through tailored power management of batteries and PV panels for energy storage

CLS Wind logo

CLS Wind

Energy & Power

Self-erecting system for installing wind turbines

Decimetrix logo

Decimetrix

Energy & Power

AI platform to help clients measure their carbon footprint

MagDrive Technologies Inc. logo

MagDrive Technologies Inc.

Manufacturing & Processing

Eliminating fugitive emissions and delivering zero-leak performance and durability

Pike Robotics logo

Pike Robotics

Energy & Power

Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces

AllSpice.io logo

AllSpice.io

Infrastructure & Construction

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

Rafi Properties logo

Rafi Properties

Infrastructure & Construction

Mithril Technologies logo

Mithril Technologies

Infrastructure & Construction

Reshapable reflectors for advanced antennas & radars for space-based earth and severe weather monitoring

SRGE logo

SRGE

Infrastructure & Construction

Full-service accelerator to support small and underrepresented-led construction firms

Capital Energy logo

Capital Energy

Energy & Power

Helping climatetech companies translate complex work into compelling brands

Clean Crop Technologies logo

Clean Crop Technologies

Food, Water, & Land

Improving food safety and reducing food waste by removing contaminants with food-grade gasses and electricity

Ohm Analytics logo

Ohm Analytics

Energy & Power

Aggregating clean energy data based on thousands of sources for visibility and intelligence in the U.S. solar market

Solar Materials logo

Solar Materials

Energy & Power

Recovered and recycled secondary solar panel materials

frakktal logo

frakktal

Manufacturing & Processing

Biobased polymer process to upend PVC overuse

Torres Orbital Mining Inc (TOM) logo

Torres Orbital Mining Inc (TOM)

Infrastructure & Construction

Autonomous lunar excavation systems for dust-free regolith mining and space operations

Aramco Ventures (Member Account) logo

Aramco Ventures (Member Account)

Energy & Power

Strategic technology-venturing program of Saudi Aramco

Anvil Capture Systems logo

Anvil Capture Systems

Manufacturing & Processing

CO2 direct air mineralization process, delivering carbon dioxide removal

Florrent logo

Florrent

Food, Water, & Land

High-energy-density supercapacitors for energy storage, made from domestic biomass waste

Monaire logo

Monaire

Infrastructure & Construction

Reducing HVAC energy use and repair costs for small commercial buildings

Onboard Data logo

Onboard Data

Infrastructure & Construction

Onboard — offers software analytics for HVAC service providers.

REON Technology logo

REON Technology

Energy & Power

AI-driven optimization of systems through tailored power management of batteries and PV panels for energy storage

CLS Wind logo

CLS Wind

Energy & Power

Self-erecting system for installing wind turbines

Decimetrix logo

Decimetrix

Energy & Power

AI platform to help clients measure their carbon footprint

MagDrive Technologies Inc. logo

MagDrive Technologies Inc.

Manufacturing & Processing

Eliminating fugitive emissions and delivering zero-leak performance and durability

Pike Robotics logo

Pike Robotics

Energy & Power

Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces

AllSpice.io logo

AllSpice.io

Infrastructure & Construction

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

Rafi Properties logo

Rafi Properties

Infrastructure & Construction

Mithril Technologies logo

Mithril Technologies

Infrastructure & Construction

Reshapable reflectors for advanced antennas & radars for space-based earth and severe weather monitoring

SRGE logo

SRGE

Infrastructure & Construction

Full-service accelerator to support small and underrepresented-led construction firms

Capital Energy logo

Capital Energy

Energy & Power

Helping climatetech companies translate complex work into compelling brands

Clean Crop Technologies logo

Clean Crop Technologies

Food, Water, & Land

Improving food safety and reducing food waste by removing contaminants with food-grade gasses and electricity

Ohm Analytics logo

Ohm Analytics

Energy & Power

Aggregating clean energy data based on thousands of sources for visibility and intelligence in the U.S. solar market

Solar Materials logo

Solar Materials

Energy & Power

Recovered and recycled secondary solar panel materials

Carbion logo

Carbion

Manufacturing & Processing

Affordable and clean biomass transformation to graphite for batteries

Anning Corporation logo

Anning Corporation

Energy & Power

Targeting iron-rich rocks to produce hydrogen

SBD Technologies logo

SBD Technologies

Transportation & Logistics

Fully automated, scalable EV home charging and energy optimization solutions for sustainable fleet management

MCatalysis logo

MCatalysis

Manufacturing & Processing

Converting waste carbon into low-cost clean fuels with advanced microwave and catalyst technology

247Solar logo

247Solar

Energy & Power

High-temp solar power with heat storage for clean industrial heat and renewable power

Keysight Technologies (Member Account) logo

Keysight Technologies (Member Account)

Manufacturing & Processing

World’s leading electronic measurement company

Nominal logo

Nominal

Manufacturing & Processing

Software that lets hardware teams test and iterate as fast as software teams

Priority Investor Loans logo

Priority Investor Loans

Infrastructure & Construction

Simplified loan programs to fund real estate investors nationwide with income-producing properties

Timbergrove logo

Timbergrove

Energy & Power

Building AI + IoT solutions that connect and optimize assets, boosting visibility, safety, and efficiency

EVident Battery logo

EVident Battery

Transportation & Logistics

Comprehensive, non-destructive inspection solutions for EV battery packs

Mission Zero Technologies logo

Mission Zero Technologies

Manufacturing & Processing

Efficient electrochemistry to capture CO₂

AgZen logo

AgZen

Food, Water, & Land

AI that monitors leaf coverage during spraying to reduce pesticide usage

Thalon Materials logo

Thalon Materials

Manatee Energy logo

Manatee Energy

Infrastructure & Construction

Rigorous and automated system design for affordable home heat pumps

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.

Rushnu logo

Rushnu

Manufacturing & Processing

Turns waste into carbon-neutral chemistry

American Battery Technology Company logo

American Battery Technology Company

Energy & Power

Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company

Massachusetts Materials Technologies logo

Massachusetts Materials Technologies

Energy & Power

Seamlessly measuring the mechanical properties of pipelines without interruption

Peak Power logo

Peak Power

Energy & Power

Energy-storage optimization software for commercial and industrial customers and energy storage project developers

Revvit logo

Revvit

Infrastructure & Construction

Low-cost, simple EV charging at commercial, multifamily, fleet parking, and public properties

Carbion logo

Carbion

Manufacturing & Processing

Affordable and clean biomass transformation to graphite for batteries

Anning Corporation logo

Anning Corporation

Energy & Power

Targeting iron-rich rocks to produce hydrogen

SBD Technologies logo

SBD Technologies

Transportation & Logistics

Fully automated, scalable EV home charging and energy optimization solutions for sustainable fleet management

MCatalysis logo

MCatalysis

Manufacturing & Processing

Converting waste carbon into low-cost clean fuels with advanced microwave and catalyst technology

247Solar logo

247Solar

Energy & Power

High-temp solar power with heat storage for clean industrial heat and renewable power

Keysight Technologies (Member Account) logo

Keysight Technologies (Member Account)

Manufacturing & Processing

World’s leading electronic measurement company

Nominal logo

Nominal

Manufacturing & Processing

Software that lets hardware teams test and iterate as fast as software teams

Priority Investor Loans logo

Priority Investor Loans

Infrastructure & Construction

Simplified loan programs to fund real estate investors nationwide with income-producing properties

Timbergrove logo

Timbergrove

Energy & Power

Building AI + IoT solutions that connect and optimize assets, boosting visibility, safety, and efficiency

EVident Battery logo

EVident Battery

Transportation & Logistics

Comprehensive, non-destructive inspection solutions for EV battery packs

Mission Zero Technologies logo

Mission Zero Technologies

Manufacturing & Processing

Efficient electrochemistry to capture CO₂

AgZen logo

AgZen

Food, Water, & Land

AI that monitors leaf coverage during spraying to reduce pesticide usage

Thalon Materials logo

Thalon Materials

Manatee Energy logo

Manatee Energy

Infrastructure & Construction

Rigorous and automated system design for affordable home heat pumps

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.

Rushnu logo

Rushnu

Manufacturing & Processing

Turns waste into carbon-neutral chemistry

American Battery Technology Company logo

American Battery Technology Company

Energy & Power

Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company

Massachusetts Materials Technologies logo

Massachusetts Materials Technologies

Energy & Power

Seamlessly measuring the mechanical properties of pipelines without interruption

Peak Power logo

Peak Power

Energy & Power

Energy-storage optimization software for commercial and industrial customers and energy storage project developers

Revvit logo

Revvit

Infrastructure & Construction

Low-cost, simple EV charging at commercial, multifamily, fleet parking, and public properties

[ 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

12,915 new jobs created by our members, and counting

Boston

7,492

Houston

5,423

[ 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
  • Microsoft
  • 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
Programs
Two Greentown program participants in the lab

Learn About our Programs

In addition to our Boston and Houston incubators, Greentown runs programs designed to address critical challenges in the climatetech ecosystem.

Explore Programs