Helping entrepreneursTransformindustry faster
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.
Greentown is a 501(c)(3) non-profit organization
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Manufacturing & Processing
Biobased polymer process to upend PVC overuse
Torres Orbital Mining Inc (TOM)
Infrastructure & Construction
Autonomous lunar excavation systems for dust-free regolith mining and space operations
Aramco Ventures (Member Account)
Energy & Power
Strategic technology-venturing program of Saudi Aramco
Anvil Capture Systems
Manufacturing & Processing
CO2 direct air mineralization process, delivering carbon dioxide removal
Florrent
Food, Water, & Land
High-energy-density supercapacitors for energy storage, made from domestic biomass waste
Monaire
Infrastructure & Construction
Reducing HVAC energy use and repair costs for small commercial buildings
Onboard Data
Infrastructure & Construction
Onboard — offers software analytics for HVAC service providers.
REON Technology
Energy & Power
AI-driven optimization of systems through tailored power management of batteries and PV panels for energy storage
CLS Wind
Energy & Power
Self-erecting system for installing wind turbines
Decimetrix
Energy & Power
AI platform to help clients measure their carbon footprint
MagDrive Technologies Inc.
Manufacturing & Processing
Eliminating fugitive emissions and delivering zero-leak performance and durability
Pike Robotics
Energy & Power
Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces
AllSpice.io
Infrastructure & Construction
A collaboration hub for hardware teams with revision control, design reviews, and releases
Rafi Properties
Infrastructure & Construction
Mithril Technologies
Infrastructure & Construction
Reshapable reflectors for advanced antennas & radars for space-based earth and severe weather monitoring
SRGE
Infrastructure & Construction
Full-service accelerator to support small and underrepresented-led construction firms
Capital Energy
Energy & Power
Helping climatetech companies translate complex work into compelling brands
Clean Crop Technologies
Food, Water, & Land
Improving food safety and reducing food waste by removing contaminants with food-grade gasses and electricity
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
Energy & Power
Recovered and recycled secondary solar panel materials
frakktal
Manufacturing & Processing
Biobased polymer process to upend PVC overuse
Torres Orbital Mining Inc (TOM)
Infrastructure & Construction
Autonomous lunar excavation systems for dust-free regolith mining and space operations
Aramco Ventures (Member Account)
Energy & Power
Strategic technology-venturing program of Saudi Aramco
Anvil Capture Systems
Manufacturing & Processing
CO2 direct air mineralization process, delivering carbon dioxide removal
Florrent
Food, Water, & Land
High-energy-density supercapacitors for energy storage, made from domestic biomass waste
Monaire
Infrastructure & Construction
Reducing HVAC energy use and repair costs for small commercial buildings
Onboard Data
Infrastructure & Construction
Onboard — offers software analytics for HVAC service providers.
REON Technology
Energy & Power
AI-driven optimization of systems through tailored power management of batteries and PV panels for energy storage
CLS Wind
Energy & Power
Self-erecting system for installing wind turbines
Decimetrix
Energy & Power
AI platform to help clients measure their carbon footprint
MagDrive Technologies Inc.
Manufacturing & Processing
Eliminating fugitive emissions and delivering zero-leak performance and durability
Pike Robotics
Energy & Power
Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces
AllSpice.io
Infrastructure & Construction
A collaboration hub for hardware teams with revision control, design reviews, and releases
Rafi Properties
Infrastructure & Construction
Mithril Technologies
Infrastructure & Construction
Reshapable reflectors for advanced antennas & radars for space-based earth and severe weather monitoring
SRGE
Infrastructure & Construction
Full-service accelerator to support small and underrepresented-led construction firms
Capital Energy
Energy & Power
Helping climatetech companies translate complex work into compelling brands
Clean Crop Technologies
Food, Water, & Land
Improving food safety and reducing food waste by removing contaminants with food-grade gasses and electricity
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
Energy & Power
Recovered and recycled secondary solar panel materials
Carbion
Manufacturing & Processing
Affordable and clean biomass transformation to graphite for batteries
Anning Corporation
Energy & Power
Targeting iron-rich rocks to produce hydrogen
SBD Technologies
Transportation & Logistics
Fully automated, scalable EV home charging and energy optimization solutions for sustainable fleet management
MCatalysis
Manufacturing & Processing
Converting waste carbon into low-cost clean fuels with advanced microwave and catalyst technology
247Solar
Energy & Power
High-temp solar power with heat storage for clean industrial heat and renewable power
Keysight Technologies (Member Account)
Manufacturing & Processing
World’s leading electronic measurement company
Nominal
Manufacturing & Processing
Software that lets hardware teams test and iterate as fast as software teams
Priority Investor Loans
Infrastructure & Construction
Simplified loan programs to fund real estate investors nationwide with income-producing properties
Timbergrove
Energy & Power
Building AI + IoT solutions that connect and optimize assets, boosting visibility, safety, and efficiency
EVident Battery
Transportation & Logistics
Comprehensive, non-destructive inspection solutions for EV battery packs
Mission Zero Technologies
Manufacturing & Processing
Efficient electrochemistry to capture CO₂
AgZen
Food, Water, & Land
AI that monitors leaf coverage during spraying to reduce pesticide usage
Thalon Materials
Manatee Energy
Infrastructure & Construction
Rigorous and automated system design for affordable home heat pumps
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
Manufacturing & Processing
Turns waste into carbon-neutral chemistry
American Battery Technology Company
Energy & Power
Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company
Massachusetts Materials Technologies
Energy & Power
Seamlessly measuring the mechanical properties of pipelines without interruption
Peak Power
Energy & Power
Energy-storage optimization software for commercial and industrial customers and energy storage project developers
Revvit
Infrastructure & Construction
Low-cost, simple EV charging at commercial, multifamily, fleet parking, and public properties
Carbion
Manufacturing & Processing
Affordable and clean biomass transformation to graphite for batteries
Anning Corporation
Energy & Power
Targeting iron-rich rocks to produce hydrogen
SBD Technologies
Transportation & Logistics
Fully automated, scalable EV home charging and energy optimization solutions for sustainable fleet management
MCatalysis
Manufacturing & Processing
Converting waste carbon into low-cost clean fuels with advanced microwave and catalyst technology
247Solar
Energy & Power
High-temp solar power with heat storage for clean industrial heat and renewable power
Keysight Technologies (Member Account)
Manufacturing & Processing
World’s leading electronic measurement company
Nominal
Manufacturing & Processing
Software that lets hardware teams test and iterate as fast as software teams
Priority Investor Loans
Infrastructure & Construction
Simplified loan programs to fund real estate investors nationwide with income-producing properties
Timbergrove
Energy & Power
Building AI + IoT solutions that connect and optimize assets, boosting visibility, safety, and efficiency
EVident Battery
Transportation & Logistics
Comprehensive, non-destructive inspection solutions for EV battery packs
Mission Zero Technologies
Manufacturing & Processing
Efficient electrochemistry to capture CO₂
AgZen
Food, Water, & Land
AI that monitors leaf coverage during spraying to reduce pesticide usage
Thalon Materials
Manatee Energy
Infrastructure & Construction
Rigorous and automated system design for affordable home heat pumps
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
Manufacturing & Processing
Turns waste into carbon-neutral chemistry
American Battery Technology Company
Energy & Power
Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company
Massachusetts Materials Technologies
Energy & Power
Seamlessly measuring the mechanical properties of pipelines without interruption
Peak Power
Energy & Power
Energy-storage optimization software for commercial and industrial customers and energy storage project developers
Revvit
Infrastructure & Construction
Low-cost, simple EV charging at commercial, multifamily, fleet parking, and public properties
Our Startups Have Raised Over $0B
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Startups Operate
12,915 new jobs created by our members, and counting
Boston
7,492
Houston
5,423
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.
Learn About our Programs
In addition to our Boston and Houston incubators, Greentown runs programs designed to address critical challenges in the climatetech ecosystem.