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
Pike Robotics
Energy & Power
Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces
QuantAQ
Infrastructure & Construction
Air quality-monitoring networks that combine IoT hardware, machine learning, and user-friendly software design
Massachusetts Materials Technologies
Energy & Power
Seamlessly measuring the mechanical properties of pipelines without interruption
Diffraqtion
Energy & Power
AI cameras powering ultra high-resolution Earth and Space imaging
Thalon Materials
SkyH2O
Food, Water, & Land
Atmospheric water generation for commercial and government projects
Loop CO2
Manufacturing & Processing
Transforming CO₂ into sustainable polymers to create fully recyclable materials
Imperium Technologies
Energy & Power
Reducing industrial heating emissions with electrochemical processes
Glimpse Engineering
Manufacturing & Processing
Visualizing battery scans and continuously monitoring key battery-design features
eSki Watercraft
Energy & Power
Electric personal watercraft
Endeavor Composites
Manufacturing & Processing
Sustainably repurposing landfill-destined post-industrial fibers into semi-finished goods for the composite industry
Anning Corporation
Energy & Power
Targeting iron-rich rocks to produce hydrogen
Geokiln Energy Innovation
Energy & Power
Breakthrough low-cost, low-carbon hydrogen production approach that accelerates natural subsurface mineral reactions
Highland Park Technologies
Infrastructure & Construction
Insulated cladding and building envelope retrofits at a fraction of the cost
Biospheric AI
Energy & Power
High-resolution, building-level energy demand forecasts for utilities and more
Reframe Systems
Infrastructure & Construction
Offsite construction of zero-carbon buildings with volumetric modules manufactured with robotic microfactories
Eden GeoPower
Energy & Power
Electrical Reservoir Stimulation to enhance subsurface permeability
Revterra
Energy & Power
Kinetic stabilizer for instant grid stabilization for industrial manufacturing, data centers, and rapid EV charging
SolarKal
Energy & Power
The largest solar energy marketplace in the U.S., connecting organizations to solar providers
Catalyxx
Manufacturing & Processing
Catalytic tech to turn bio-ethanol into high-value, carbon-negative chemicals
Pike Robotics
Energy & Power
Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces
QuantAQ
Infrastructure & Construction
Air quality-monitoring networks that combine IoT hardware, machine learning, and user-friendly software design
Massachusetts Materials Technologies
Energy & Power
Seamlessly measuring the mechanical properties of pipelines without interruption
Diffraqtion
Energy & Power
AI cameras powering ultra high-resolution Earth and Space imaging
Thalon Materials
SkyH2O
Food, Water, & Land
Atmospheric water generation for commercial and government projects
Loop CO2
Manufacturing & Processing
Transforming CO₂ into sustainable polymers to create fully recyclable materials
Imperium Technologies
Energy & Power
Reducing industrial heating emissions with electrochemical processes
Glimpse Engineering
Manufacturing & Processing
Visualizing battery scans and continuously monitoring key battery-design features
eSki Watercraft
Energy & Power
Electric personal watercraft
Endeavor Composites
Manufacturing & Processing
Sustainably repurposing landfill-destined post-industrial fibers into semi-finished goods for the composite industry
Anning Corporation
Energy & Power
Targeting iron-rich rocks to produce hydrogen
Geokiln Energy Innovation
Energy & Power
Breakthrough low-cost, low-carbon hydrogen production approach that accelerates natural subsurface mineral reactions
Highland Park Technologies
Infrastructure & Construction
Insulated cladding and building envelope retrofits at a fraction of the cost
Biospheric AI
Energy & Power
High-resolution, building-level energy demand forecasts for utilities and more
Reframe Systems
Infrastructure & Construction
Offsite construction of zero-carbon buildings with volumetric modules manufactured with robotic microfactories
Eden GeoPower
Energy & Power
Electrical Reservoir Stimulation to enhance subsurface permeability
Revterra
Energy & Power
Kinetic stabilizer for instant grid stabilization for industrial manufacturing, data centers, and rapid EV charging
SolarKal
Energy & Power
The largest solar energy marketplace in the U.S., connecting organizations to solar providers
Catalyxx
Manufacturing & Processing
Catalytic tech to turn bio-ethanol into high-value, carbon-negative chemicals
ONEPREDICT
Manufacturing & Processing
Predicting and diagnosing the status of key industrial assets for the energy and manufacturing industries
Sweetch Energy
Energy & Power
Membrane-based technology that taps into osmotic power
Adept Materials
Infrastructure & Construction
Material innovations that improve moisture regulation, comfort, and energy efficiency
Conduit Tech
Infrastructure & Construction
Supporting HVAC contractors through design, sales, and installation
Fresh Inset
Food, Water, & Land
Improving fresh produce’s shelf life, appearance, and quality
XMtrace
Manufacturing & Processing
Low-cost methane monitoring with real-time detection and autonomous response
Steven Winter Associates, Inc.
Infrastructure & Construction
Research, consulting, and advisory services to improve commercial, residential, and multifamily built environments
Singularity Energy
Energy & Power
Data and software solutions for grid decarbonization
Dsider
Energy & Power
SaaS platform to accelerate the expansion of energy-transition projects
Fluor Enterprises, Inc.
Energy & Power
Leading global engineering, procurement and construction (EPC) company
Studio 3e8
Manufacturing & Processing
Lightspeed metal 3D printing, making professional-grade fabrication affordable, compact, and easy to use
Harmony Desalting
Food, Water, & Land
Batch-process reverse osmosis for low-cost water desalination
Turnover Labs
Manufacturing & Processing
Modular electrolyzers converting dirty onsite CO₂ into basic chemicals
Wootz
Manufacturing & Processing
Carbon nanotube supermaterials to replace or augment traditional metallic conductors
Kanin Energy
Energy & Power
Monetizing industrial waste heat with reduced deployment risk via third-party financing
Saint-Gobain (Member Account)
Infrastructure & Construction
Worldwide leader in light and sustainable construction
Ensovi
Manufacturing & Processing
Cofactor recycling platform for sustainable drug manufacturing
Thola
Energy & Power
On-demand marketplace for commercial building sustainability and safety management
HKG Energy
Energy & Power
Silicon materials that increase battery energy density
Simlionics
Energy & Power
Physics-aware, advanced AI battery modeling and intelligence for EV and energy-storage systems
ONEPREDICT
Manufacturing & Processing
Predicting and diagnosing the status of key industrial assets for the energy and manufacturing industries
Sweetch Energy
Energy & Power
Membrane-based technology that taps into osmotic power
Adept Materials
Infrastructure & Construction
Material innovations that improve moisture regulation, comfort, and energy efficiency
Conduit Tech
Infrastructure & Construction
Supporting HVAC contractors through design, sales, and installation
Fresh Inset
Food, Water, & Land
Improving fresh produce’s shelf life, appearance, and quality
XMtrace
Manufacturing & Processing
Low-cost methane monitoring with real-time detection and autonomous response
Steven Winter Associates, Inc.
Infrastructure & Construction
Research, consulting, and advisory services to improve commercial, residential, and multifamily built environments
Singularity Energy
Energy & Power
Data and software solutions for grid decarbonization
Dsider
Energy & Power
SaaS platform to accelerate the expansion of energy-transition projects
Fluor Enterprises, Inc.
Energy & Power
Leading global engineering, procurement and construction (EPC) company
Studio 3e8
Manufacturing & Processing
Lightspeed metal 3D printing, making professional-grade fabrication affordable, compact, and easy to use
Harmony Desalting
Food, Water, & Land
Batch-process reverse osmosis for low-cost water desalination
Turnover Labs
Manufacturing & Processing
Modular electrolyzers converting dirty onsite CO₂ into basic chemicals
Wootz
Manufacturing & Processing
Carbon nanotube supermaterials to replace or augment traditional metallic conductors
Kanin Energy
Energy & Power
Monetizing industrial waste heat with reduced deployment risk via third-party financing
Saint-Gobain (Member Account)
Infrastructure & Construction
Worldwide leader in light and sustainable construction
Ensovi
Manufacturing & Processing
Cofactor recycling platform for sustainable drug manufacturing
Thola
Energy & Power
On-demand marketplace for commercial building sustainability and safety management
HKG Energy
Energy & Power
Silicon materials that increase battery energy density
Simlionics
Energy & Power
Physics-aware, advanced AI battery modeling and intelligence for EV and energy-storage systems
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.