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
Decimetrix
Energy & Power
AI platform to help clients measure their carbon footprint
Onboard Data
Infrastructure & Construction
Onboard — offers software analytics for HVAC service providers.
Solidec
Manufacturing & Processing
Converting carbon into chemicals using only air, water, and renewable electricity
NewGenium
Energy & Power
Advanced brine-to-battery grade LFP technology
Encore CO2
Manufacturing & Processing
Converting captured CO₂ into valuable industrial molecules
Rushnu
Manufacturing & Processing
Turns waste into carbon-neutral chemistry
AdaViv
Food, Water, & Land
Hardware-enabled crop-care software for greenhouse and indoor growers to maximize quality yields without added labor
Sparkplug Power
Energy & Power
Energy-storage-as-a-service for municipal utilities and commercial businesses
WISE ENERGIE
Energy & Power
Blending vertical-axis wind, solar PV, and battery storage into a single, silent system generating 24/7 clean power
American Battery Technology Company
Energy & Power
Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company
Packwise
Manufacturing & Processing
IIoT sensors combined with a software and analytics platform to optimize industrial supply chains
Lydian
Manufacturing & Processing
Fully electrified reactors for high-efficiency conversion of non-fossil feedstocks into pure syngas
AeroShield Materials
Infrastructure & Construction
Insulating, porous aerogels for energy-efficient windows
MoveEV
Transportation & Logistics
Mitigating Scope 1 & 3 emissions for businesses while providing cost savings for employees
change:WATER Labs
Food, Water, & Land
Low-cost, compact, waterless toilet for non-sewered households and communities
NeuroBionics
Manufacturing & Processing
Sustainability-focused device for minimally-invasive endovascular deep-brain stimulation for stroke rehabilitation
XTPL
Manufacturing & Processing
Additive manufacturing technology for ultra-precise printing of nanomaterials
Dugu Systems
Energy & Power
Zero-carbon power with an emissions-free gas turbine
De-Ice
Transportation & Logistics
Electric de-icing technology designed to help the aerospace industry eliminate all chemicals
SpringCycle Energy
Energy & Power
Rechargeable iron fuel to transform solar into baseload power
Decimetrix
Energy & Power
AI platform to help clients measure their carbon footprint
Onboard Data
Infrastructure & Construction
Onboard — offers software analytics for HVAC service providers.
Solidec
Manufacturing & Processing
Converting carbon into chemicals using only air, water, and renewable electricity
NewGenium
Energy & Power
Advanced brine-to-battery grade LFP technology
Encore CO2
Manufacturing & Processing
Converting captured CO₂ into valuable industrial molecules
Rushnu
Manufacturing & Processing
Turns waste into carbon-neutral chemistry
AdaViv
Food, Water, & Land
Hardware-enabled crop-care software for greenhouse and indoor growers to maximize quality yields without added labor
Sparkplug Power
Energy & Power
Energy-storage-as-a-service for municipal utilities and commercial businesses
WISE ENERGIE
Energy & Power
Blending vertical-axis wind, solar PV, and battery storage into a single, silent system generating 24/7 clean power
American Battery Technology Company
Energy & Power
Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company
Packwise
Manufacturing & Processing
IIoT sensors combined with a software and analytics platform to optimize industrial supply chains
Lydian
Manufacturing & Processing
Fully electrified reactors for high-efficiency conversion of non-fossil feedstocks into pure syngas
AeroShield Materials
Infrastructure & Construction
Insulating, porous aerogels for energy-efficient windows
MoveEV
Transportation & Logistics
Mitigating Scope 1 & 3 emissions for businesses while providing cost savings for employees
change:WATER Labs
Food, Water, & Land
Low-cost, compact, waterless toilet for non-sewered households and communities
NeuroBionics
Manufacturing & Processing
Sustainability-focused device for minimally-invasive endovascular deep-brain stimulation for stroke rehabilitation
XTPL
Manufacturing & Processing
Additive manufacturing technology for ultra-precise printing of nanomaterials
Dugu Systems
Energy & Power
Zero-carbon power with an emissions-free gas turbine
De-Ice
Transportation & Logistics
Electric de-icing technology designed to help the aerospace industry eliminate all chemicals
SpringCycle Energy
Energy & Power
Rechargeable iron fuel to transform solar into baseload power
Tato Labs
Manufacturing & Processing
Bioplastic products and packaging solutions made from potato starch
GeoTeknica
Manufacturing & Processing
Fluor Enterprises, Inc.
Energy & Power
Leading global engineering, procurement and construction (EPC) company
rStream Recycling LLC
Manufacturing & Processing
Autonomous waste-sorting system for non-industrial settings with critical waste volumes
BLU NXT
Energy & Power
Solar concentrators for high-temperature heat and energy
Ensovi
Manufacturing & Processing
Cofactor recycling platform for sustainable drug manufacturing
Thiozen
Manufacturing & Processing
Chemical waste-to-hydrogen cycle that removes hydrogen sulfide from gas streams and generates zero-emission hydrogen
QuantAQ
Infrastructure & Construction
Air quality-monitoring networks that combine IoT hardware, machine learning, and user-friendly software design
SBD Technologies
Transportation & Logistics
Fully automated, scalable EV home charging and energy optimization solutions for sustainable fleet management
PooPoof Inc
Food, Water, & Land
The world’s first pocket-sized bioreactor
Cala Systems
Energy & Power
Intelligent heat-pump water heaters
Haffner Energy
Energy & Power
Producing renewable energy via waste-biomass thermolysis
3D Architech, Inc.
Manufacturing & Processing
Ultra-fine and gel-based metal manufacturing, creating high-efficiency microstructures for cooling and clean energy
Massachusetts Materials Technologies
Energy & Power
Seamlessly measuring the mechanical properties of pipelines without interruption
Realizse
Energy & Power
Tokenization and product verification for circularity, energy, and the real estate markets
ONEPREDICT
Manufacturing & Processing
Predicting and diagnosing the status of key industrial assets for the energy and manufacturing industries
InnoEnergy (Member Account)
Energy & Power
Industrializing cleantech innovation to enable and grow a global net-zero economy
Verdicity
Infrastructure & Construction
AI-enabled, customizable smart building, information, and facility services for building vendors
Wootz
Manufacturing & Processing
Carbon nanotube supermaterials to replace or augment traditional metallic conductors
AtmoSpark Technologies
Food, Water, & Land
Atmospheric-water-generation systems that provide freshwater to those with limited access or in remote locations
Tato Labs
Manufacturing & Processing
Bioplastic products and packaging solutions made from potato starch
GeoTeknica
Manufacturing & Processing
Fluor Enterprises, Inc.
Energy & Power
Leading global engineering, procurement and construction (EPC) company
rStream Recycling LLC
Manufacturing & Processing
Autonomous waste-sorting system for non-industrial settings with critical waste volumes
BLU NXT
Energy & Power
Solar concentrators for high-temperature heat and energy
Ensovi
Manufacturing & Processing
Cofactor recycling platform for sustainable drug manufacturing
Thiozen
Manufacturing & Processing
Chemical waste-to-hydrogen cycle that removes hydrogen sulfide from gas streams and generates zero-emission hydrogen
QuantAQ
Infrastructure & Construction
Air quality-monitoring networks that combine IoT hardware, machine learning, and user-friendly software design
SBD Technologies
Transportation & Logistics
Fully automated, scalable EV home charging and energy optimization solutions for sustainable fleet management
PooPoof Inc
Food, Water, & Land
The world’s first pocket-sized bioreactor
Cala Systems
Energy & Power
Intelligent heat-pump water heaters
Haffner Energy
Energy & Power
Producing renewable energy via waste-biomass thermolysis
3D Architech, Inc.
Manufacturing & Processing
Ultra-fine and gel-based metal manufacturing, creating high-efficiency microstructures for cooling and clean energy
Massachusetts Materials Technologies
Energy & Power
Seamlessly measuring the mechanical properties of pipelines without interruption
Realizse
Energy & Power
Tokenization and product verification for circularity, energy, and the real estate markets
ONEPREDICT
Manufacturing & Processing
Predicting and diagnosing the status of key industrial assets for the energy and manufacturing industries
InnoEnergy (Member Account)
Energy & Power
Industrializing cleantech innovation to enable and grow a global net-zero economy
Verdicity
Infrastructure & Construction
AI-enabled, customizable smart building, information, and facility services for building vendors
Wootz
Manufacturing & Processing
Carbon nanotube supermaterials to replace or augment traditional metallic conductors
AtmoSpark Technologies
Food, Water, & Land
Atmospheric-water-generation systems that provide freshwater to those with limited access or in remote locations
Our Startups Have Raised Over $0B
All-time
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Currently home to
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Countries Where
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.