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
Infinite Foundry
Manufacturing & Processing
Real-time 3D operational models to improve efficiency, lower costs, and enhance sustainability
Tato Labs
Manufacturing & Processing
Bioplastic products and packaging solutions made from potato starch
LOCOAL
Manufacturing & Processing
Turning waste into value, and producing clean energy, biofuels, and carbon credits
Onvector
Infrastructure & Construction
Non-chemical water treatment using plasma to rid water of PFAS and more
Optigon
Energy & Power
Rapid, contactless characterization for assessing performance during photovoltaic solar cell fabrication
RIVSAL HOLDINGS INC.
Energy & Power
Power plants that run on water and deliver electricity to avoid grid vulnerability and energy price volatility
Cala Systems
Energy & Power
Intelligent heat-pump water heaters
ThermaFuels
Transportation & Logistics
Deploying scalable, financeable low-carbon methanol and sustainable fuel infrastructure
KP Labs
Manufacturing & Processing
Modular, biomembrane-based systems for on-site recovery of critical metals from e-waste and industrial residues
Carbion
Manufacturing & Processing
Affordable and clean biomass transformation to graphite for batteries
Conduit Tech
Infrastructure & Construction
Supporting HVAC contractors through design, sales, and installation
eSki Watercraft
Energy & Power
Electric personal watercraft
Mars Materials
Manufacturing & Processing
Converting CO₂ and biomass into acrylonitrile
Transaera
Infrastructure & Construction
Ultra-efficient air conditioning using a novel desiccant material
WhaleSpotter
Transportation & Logistics
Thermal imaging and AI to prevent marine mammal strikes at sea
Innovator Energy
Energy & Power
Developing and deploying solutions in cooling, heating, and heat transfer
Browning the Green Space
Food, Water, & Land
Addressing diversity, equity, and inclusion across careers, companies, contracts, capital, and communities
ONEPREDICT
Manufacturing & Processing
Predicting and diagnosing the status of key industrial assets for the energy and manufacturing industries
Diffraqtion
Energy & Power
AI cameras powering ultra high-resolution Earth and Space imaging
Nominal
Manufacturing & Processing
Software that lets hardware teams test and iterate as fast as software teams
Infinite Foundry
Manufacturing & Processing
Real-time 3D operational models to improve efficiency, lower costs, and enhance sustainability
Tato Labs
Manufacturing & Processing
Bioplastic products and packaging solutions made from potato starch
LOCOAL
Manufacturing & Processing
Turning waste into value, and producing clean energy, biofuels, and carbon credits
Onvector
Infrastructure & Construction
Non-chemical water treatment using plasma to rid water of PFAS and more
Optigon
Energy & Power
Rapid, contactless characterization for assessing performance during photovoltaic solar cell fabrication
RIVSAL HOLDINGS INC.
Energy & Power
Power plants that run on water and deliver electricity to avoid grid vulnerability and energy price volatility
Cala Systems
Energy & Power
Intelligent heat-pump water heaters
ThermaFuels
Transportation & Logistics
Deploying scalable, financeable low-carbon methanol and sustainable fuel infrastructure
KP Labs
Manufacturing & Processing
Modular, biomembrane-based systems for on-site recovery of critical metals from e-waste and industrial residues
Carbion
Manufacturing & Processing
Affordable and clean biomass transformation to graphite for batteries
Conduit Tech
Infrastructure & Construction
Supporting HVAC contractors through design, sales, and installation
eSki Watercraft
Energy & Power
Electric personal watercraft
Mars Materials
Manufacturing & Processing
Converting CO₂ and biomass into acrylonitrile
Transaera
Infrastructure & Construction
Ultra-efficient air conditioning using a novel desiccant material
WhaleSpotter
Transportation & Logistics
Thermal imaging and AI to prevent marine mammal strikes at sea
Innovator Energy
Energy & Power
Developing and deploying solutions in cooling, heating, and heat transfer
Browning the Green Space
Food, Water, & Land
Addressing diversity, equity, and inclusion across careers, companies, contracts, capital, and communities
ONEPREDICT
Manufacturing & Processing
Predicting and diagnosing the status of key industrial assets for the energy and manufacturing industries
Diffraqtion
Energy & Power
AI cameras powering ultra high-resolution Earth and Space imaging
Nominal
Manufacturing & Processing
Software that lets hardware teams test and iterate as fast as software teams
Lasso Labs
Food, Water, & Land
Using natural proteins to create real texture in alternative foods
Mission Zero Technologies
Manufacturing & Processing
Efficient electrochemistry to capture CO₂
HarvestAi
Food, Water, & Land
Computer vision and AI to provide greenhouse operators with automated data for optimized harvest planning
NewGenium
Energy & Power
Advanced brine-to-battery grade LFP technology
Capro-X
Food, Water, & Land
Sustainable biochemicals made from food waste at food production plants, creating alternatives to palm-oil chemicals
Zero Homes
Infrastructure & Construction
Automated assessment, design, and procurement platform for residential building retrofits
MagDrive Technologies Inc.
Manufacturing & Processing
Eliminating fugitive emissions and delivering zero-leak performance and durability
Anvil Capture Systems
Manufacturing & Processing
CO2 direct air mineralization process, delivering carbon dioxide removal
SWERV
Infrastructure & Construction
Making homes healthier, more comfortable, and more energy efficient through reimagined and easy to install ventilation
Dsider
Energy & Power
SaaS platform to accelerate the expansion of energy-transition projects
ATS Energy
Energy & Power
Converting waste heat into power without any moving parts
SPHINX INC
Energy & Power
High-speed 24/7 energy trading with blockchain clarity and instant settlement
Kauel
Energy & Power
Software that detects industrial threats to prevent environmental risks and catastrophes
Emrod
Energy & Power
Sustainable power with long-range wireless power transfer technology
Prophet AI
Food, Water, & Land
AI-based poultry-health-monitoring system to reduce chicken mortality, save revenue, and avoid carbon emissions
Aluminum Technologies
Manufacturing & Processing
Low-GHG primary aluminum production with Carbo-Chloride Reduction
Wootz
Manufacturing & Processing
Carbon nanotube supermaterials to replace or augment traditional metallic conductors
Manatee Energy
Infrastructure & Construction
Rigorous and automated system design for affordable home heat pumps
GS Vortex Systems
Food, Water, & Land
Hydrodynamic flow technology reducing flow resistance through pipes
Electric Hydrogen
Energy & Power
Manufactureing the world’s most powerful electrolyzers to produce the lowest cost clean hydrogen
Lasso Labs
Food, Water, & Land
Using natural proteins to create real texture in alternative foods
Mission Zero Technologies
Manufacturing & Processing
Efficient electrochemistry to capture CO₂
HarvestAi
Food, Water, & Land
Computer vision and AI to provide greenhouse operators with automated data for optimized harvest planning
NewGenium
Energy & Power
Advanced brine-to-battery grade LFP technology
Capro-X
Food, Water, & Land
Sustainable biochemicals made from food waste at food production plants, creating alternatives to palm-oil chemicals
Zero Homes
Infrastructure & Construction
Automated assessment, design, and procurement platform for residential building retrofits
MagDrive Technologies Inc.
Manufacturing & Processing
Eliminating fugitive emissions and delivering zero-leak performance and durability
Anvil Capture Systems
Manufacturing & Processing
CO2 direct air mineralization process, delivering carbon dioxide removal
SWERV
Infrastructure & Construction
Making homes healthier, more comfortable, and more energy efficient through reimagined and easy to install ventilation
Dsider
Energy & Power
SaaS platform to accelerate the expansion of energy-transition projects
ATS Energy
Energy & Power
Converting waste heat into power without any moving parts
SPHINX INC
Energy & Power
High-speed 24/7 energy trading with blockchain clarity and instant settlement
Kauel
Energy & Power
Software that detects industrial threats to prevent environmental risks and catastrophes
Emrod
Energy & Power
Sustainable power with long-range wireless power transfer technology
Prophet AI
Food, Water, & Land
AI-based poultry-health-monitoring system to reduce chicken mortality, save revenue, and avoid carbon emissions
Aluminum Technologies
Manufacturing & Processing
Low-GHG primary aluminum production with Carbo-Chloride Reduction
Wootz
Manufacturing & Processing
Carbon nanotube supermaterials to replace or augment traditional metallic conductors
Manatee Energy
Infrastructure & Construction
Rigorous and automated system design for affordable home heat pumps
GS Vortex Systems
Food, Water, & Land
Hydrodynamic flow technology reducing flow resistance through pipes
Electric Hydrogen
Energy & Power
Manufactureing the world’s most powerful electrolyzers to produce the lowest cost clean hydrogen
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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.