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
Fresh Inset
Food, Water, & Land
Improving fresh produce’s shelf life, appearance, and quality
Wootz
Manufacturing & Processing
Carbon nanotube supermaterials to replace or augment traditional metallic conductors
Coflux Purification, Inc
Food, Water, & Land
A modular, on-site water treatment system eliminating persistent contaminants from water and industrial waste streams
NewGrid
Energy & Power
Software and services to enable system operators, utilities, and power market participants to reduce grid congestion
Aeromine Technologies, Inc.
Energy & Power
Bladeless, motionless wind turbines for the built environment
QuantAQ
Infrastructure & Construction
Air quality-monitoring networks that combine IoT hardware, machine learning, and user-friendly software design
Solas Capture
Solas Capture is developing a sunlight-powered process for sustainable lithium carbonate production using novel photobase chemistry. Our technology converts lithium brines and CO₂ into battery-grade materials with lower energy use, reduced waste, and a significantly smaller environmental footprint than conventional methods.
GS Vortex Systems
Food, Water, & Land
Hydrodynamic flow technology reducing flow resistance through pipes
Infinite Foundry
Manufacturing & Processing
Real-time 3D operational models to improve efficiency, lower costs, and enhance sustainability
A&I Power Group
Energy & Power
Electricity-generation systems that convert electromagnetic energy into electrical potential
Geokiln Energy Innovation
Energy & Power
Breakthrough low-cost, low-carbon hydrogen production approach that accelerates natural subsurface mineral reactions
Gaia AI
Food, Water, & Land
Collecting high-quality biomass data in forests with drones, LiDAR, and computer vision
Mithril Technologies
Infrastructure & Construction
Reshapable reflectors for advanced antennas & radars for space-based earth and severe weather monitoring
change:WATER Labs
Food, Water, & Land
Low-cost, compact, waterless toilet for non-sewered households and communities
Cala Systems
Energy & Power
Intelligent heat-pump water heaters
Teknobuilt
Infrastructure & Construction
Cloud-based construction project management software
Fluor Enterprises, Inc.
Energy & Power
Leading global engineering, procurement and construction (EPC) company
BLU NXT
Energy & Power
Solar concentrators for high-temperature heat and energy
Rotorvault
Energy & Power
Energy-storage and load-following solutions for grid-scale and commercial applications
FAST Metals
Manufacturing & Processing
Hydrometallurgical-recovery process for extracting rare-earth elements from industrial tailings
Fresh Inset
Food, Water, & Land
Improving fresh produce’s shelf life, appearance, and quality
Wootz
Manufacturing & Processing
Carbon nanotube supermaterials to replace or augment traditional metallic conductors
Coflux Purification, Inc
Food, Water, & Land
A modular, on-site water treatment system eliminating persistent contaminants from water and industrial waste streams
NewGrid
Energy & Power
Software and services to enable system operators, utilities, and power market participants to reduce grid congestion
Aeromine Technologies, Inc.
Energy & Power
Bladeless, motionless wind turbines for the built environment
QuantAQ
Infrastructure & Construction
Air quality-monitoring networks that combine IoT hardware, machine learning, and user-friendly software design
Solas Capture
Solas Capture is developing a sunlight-powered process for sustainable lithium carbonate production using novel photobase chemistry. Our technology converts lithium brines and CO₂ into battery-grade materials with lower energy use, reduced waste, and a significantly smaller environmental footprint than conventional methods.
GS Vortex Systems
Food, Water, & Land
Hydrodynamic flow technology reducing flow resistance through pipes
Infinite Foundry
Manufacturing & Processing
Real-time 3D operational models to improve efficiency, lower costs, and enhance sustainability
A&I Power Group
Energy & Power
Electricity-generation systems that convert electromagnetic energy into electrical potential
Geokiln Energy Innovation
Energy & Power
Breakthrough low-cost, low-carbon hydrogen production approach that accelerates natural subsurface mineral reactions
Gaia AI
Food, Water, & Land
Collecting high-quality biomass data in forests with drones, LiDAR, and computer vision
Mithril Technologies
Infrastructure & Construction
Reshapable reflectors for advanced antennas & radars for space-based earth and severe weather monitoring
change:WATER Labs
Food, Water, & Land
Low-cost, compact, waterless toilet for non-sewered households and communities
Cala Systems
Energy & Power
Intelligent heat-pump water heaters
Teknobuilt
Infrastructure & Construction
Cloud-based construction project management software
Fluor Enterprises, Inc.
Energy & Power
Leading global engineering, procurement and construction (EPC) company
BLU NXT
Energy & Power
Solar concentrators for high-temperature heat and energy
Rotorvault
Energy & Power
Energy-storage and load-following solutions for grid-scale and commercial applications
FAST Metals
Manufacturing & Processing
Hydrometallurgical-recovery process for extracting rare-earth elements from industrial tailings
Deep Anchor Solutions
Infrastructure & Construction
Anchoring solutions for floating applications including energy, aquaculture, and large-scale infrastructure
Ensovi
Manufacturing & Processing
Cofactor recycling platform for sustainable drug manufacturing
QEA Tech
Energy & Power
Precise, data-driven building-envelope audits using patented AI software, drones, and thermography
FlowCellutions
Energy & Power
Preventing power outages and improving cost savings for critical battery systems
Wellbore Consultants
Energy & Power
Advanced subsurface stimulation systems to improve resource recovery while reducing energy intensity, water usage, and surface impact
Boxes
Manufacturing & Processing
Smart, affordable, and sustainable retail combining the physical and digital worlds
MagDrive Technologies Inc.
Manufacturing & Processing
Eliminating fugitive emissions and delivering zero-leak performance and durability
Element Resources
Energy & Power
Developing large-scale green hydrogen projects
Revvit
Infrastructure & Construction
Low-cost, simple EV charging at commercial, multifamily, fleet parking, and public properties
BluBridge Energy Solutions
Energy & Power
Removing undesired elements from pre- and post-combustion gas streams
Phase Two Chemicals
Manufacturing & Processing
Advanced electrode and reactor designs for on-site, on-demand chemical generation and energy storage
Upgraid RE
Infrastructure & Construction
AI and satellite data that diagnose buildings and run energy simulations, to produce ready-to-pitch upgrade proposals
Arbor Energy Holdings Inc
Energy & Power
Digital-energy platform to help homeowners live more sustainably
Cellen
Transportation & Logistics
Hydrogen-powered drones, combining UAV technology with hydrogen refueling solutions
ONEPREDICT
Manufacturing & Processing
Predicting and diagnosing the status of key industrial assets for the energy and manufacturing industries
Onboard Data
Infrastructure & Construction
Onboard — offers software analytics for HVAC service providers.
Carbion
Manufacturing & Processing
Affordable and clean biomass transformation to graphite for batteries
Biosimo
Manufacturing & Processing
Biosimo makes eco-friendly chemicals from plant waste using a clean, low-cost process
SolarKal
Energy & Power
The largest solar energy marketplace in the U.S., connecting organizations to solar providers
Sora Fuel Corporation
Transportation & Logistics
Cost-effective sustainable aviation fuel
Deep Anchor Solutions
Infrastructure & Construction
Anchoring solutions for floating applications including energy, aquaculture, and large-scale infrastructure
Ensovi
Manufacturing & Processing
Cofactor recycling platform for sustainable drug manufacturing
QEA Tech
Energy & Power
Precise, data-driven building-envelope audits using patented AI software, drones, and thermography
FlowCellutions
Energy & Power
Preventing power outages and improving cost savings for critical battery systems
Wellbore Consultants
Energy & Power
Advanced subsurface stimulation systems to improve resource recovery while reducing energy intensity, water usage, and surface impact
Boxes
Manufacturing & Processing
Smart, affordable, and sustainable retail combining the physical and digital worlds
MagDrive Technologies Inc.
Manufacturing & Processing
Eliminating fugitive emissions and delivering zero-leak performance and durability
Element Resources
Energy & Power
Developing large-scale green hydrogen projects
Revvit
Infrastructure & Construction
Low-cost, simple EV charging at commercial, multifamily, fleet parking, and public properties
BluBridge Energy Solutions
Energy & Power
Removing undesired elements from pre- and post-combustion gas streams
Phase Two Chemicals
Manufacturing & Processing
Advanced electrode and reactor designs for on-site, on-demand chemical generation and energy storage
Upgraid RE
Infrastructure & Construction
AI and satellite data that diagnose buildings and run energy simulations, to produce ready-to-pitch upgrade proposals
Arbor Energy Holdings Inc
Energy & Power
Digital-energy platform to help homeowners live more sustainably
Cellen
Transportation & Logistics
Hydrogen-powered drones, combining UAV technology with hydrogen refueling solutions
ONEPREDICT
Manufacturing & Processing
Predicting and diagnosing the status of key industrial assets for the energy and manufacturing industries
Onboard Data
Infrastructure & Construction
Onboard — offers software analytics for HVAC service providers.
Carbion
Manufacturing & Processing
Affordable and clean biomass transformation to graphite for batteries
Biosimo
Manufacturing & Processing
Biosimo makes eco-friendly chemicals from plant waste using a clean, low-cost process
SolarKal
Energy & Power
The largest solar energy marketplace in the U.S., connecting organizations to solar providers
Sora Fuel Corporation
Transportation & Logistics
Cost-effective sustainable aviation fuel
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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.