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
Swan Impact Network
Infrastructure & Construction
Angel investor network focusing on supporting early-stage companies
NewGenium
Energy & Power
Advanced brine-to-battery grade LFP technology
Clarity Castle
Infrastructure & Construction
Modular, soundproof work pods made from recycled materials
Manatee Energy
Infrastructure & Construction
Rigorous and automated system design for affordable home heat pumps
TDS Select
Food, Water, & Land
Modular, scalable FCDI system capable of desalinating brackish water using low energy
TransOceans Clean Energy Risk, LLC
Energy & Power
Risk management solutions for global clean tech risk portfolios
Laminar
Manufacturing & Processing
IoT platform optimizing industrial liquid and fluid systems in supply chain, manufacturing, and data centers
QEA Tech
Energy & Power
Precise, data-driven building-envelope audits using patented AI software, drones, and thermography
Studio 3e8
Manufacturing & Processing
Lightspeed metal 3D printing, making professional-grade fabrication affordable, compact, and easy to use
Massachusetts Materials Technologies
Energy & Power
Seamlessly measuring the mechanical properties of pipelines without interruption
Agrilab Technologies Inc.
Food, Water, & Land
Modular compost-aeration and heat-recovery systems
RIVSAL HOLDINGS INC.
Energy & Power
Power plants that run on water and deliver electricity to avoid grid vulnerability and energy price volatility
Capro-X
Food, Water, & Land
Sustainable biochemicals made from food waste at food production plants, creating alternatives to palm-oil chemicals
SRECTrade
Energy & Power
Management and transaction platform for environmental commodities to reduce costs and increase transparency
WhaleSpotter
Transportation & Logistics
Thermal imaging and AI to prevent marine mammal strikes at sea
Kauel
Energy & Power
Software that detects industrial threats to prevent environmental risks and catastrophes
Sparkplug Power
Energy & Power
Energy-storage-as-a-service for municipal utilities and commercial businesses
Vecarius
Infrastructure & Construction
Heat-to-electricity technology to boost energy efficiency in mass markets
Mocean Energy
Energy & Power
Hybrid-offshore renewable power stations, combining wave, solar, and battery systems
Raptor Maps
Energy & Power
AI software to increase solar farm power production, reduce operational risk, and lower costs
Swan Impact Network
Infrastructure & Construction
Angel investor network focusing on supporting early-stage companies
NewGenium
Energy & Power
Advanced brine-to-battery grade LFP technology
Clarity Castle
Infrastructure & Construction
Modular, soundproof work pods made from recycled materials
Manatee Energy
Infrastructure & Construction
Rigorous and automated system design for affordable home heat pumps
TDS Select
Food, Water, & Land
Modular, scalable FCDI system capable of desalinating brackish water using low energy
TransOceans Clean Energy Risk, LLC
Energy & Power
Risk management solutions for global clean tech risk portfolios
Laminar
Manufacturing & Processing
IoT platform optimizing industrial liquid and fluid systems in supply chain, manufacturing, and data centers
QEA Tech
Energy & Power
Precise, data-driven building-envelope audits using patented AI software, drones, and thermography
Studio 3e8
Manufacturing & Processing
Lightspeed metal 3D printing, making professional-grade fabrication affordable, compact, and easy to use
Massachusetts Materials Technologies
Energy & Power
Seamlessly measuring the mechanical properties of pipelines without interruption
Agrilab Technologies Inc.
Food, Water, & Land
Modular compost-aeration and heat-recovery systems
RIVSAL HOLDINGS INC.
Energy & Power
Power plants that run on water and deliver electricity to avoid grid vulnerability and energy price volatility
Capro-X
Food, Water, & Land
Sustainable biochemicals made from food waste at food production plants, creating alternatives to palm-oil chemicals
SRECTrade
Energy & Power
Management and transaction platform for environmental commodities to reduce costs and increase transparency
WhaleSpotter
Transportation & Logistics
Thermal imaging and AI to prevent marine mammal strikes at sea
Kauel
Energy & Power
Software that detects industrial threats to prevent environmental risks and catastrophes
Sparkplug Power
Energy & Power
Energy-storage-as-a-service for municipal utilities and commercial businesses
Vecarius
Infrastructure & Construction
Heat-to-electricity technology to boost energy efficiency in mass markets
Mocean Energy
Energy & Power
Hybrid-offshore renewable power stations, combining wave, solar, and battery systems
Raptor Maps
Energy & Power
AI software to increase solar farm power production, reduce operational risk, and lower costs
Flux Marine
Transportation & Logistics
Outboard motors and complete boat packages characterized by low maintenance, long range, and outstanding performance
NewGrid
Energy & Power
Software and services to enable system operators, utilities, and power market participants to reduce grid congestion
Alma Energy
Energy & Power
Geothermal exploration to deliver scaled renewable energy production at economic levels
Wellbore Consultants
Energy & Power
Advanced subsurface stimulation systems to improve resource recovery while reducing energy intensity, water usage, and surface impact
Verdicity
Infrastructure & Construction
AI-enabled, customizable smart building, information, and facility services for building vendors
Dottir Labs
Food, Water, & Land
Sensor technology that provides real-time, detailed chemical analysis of water
Phase Two Chemicals
Manufacturing & Processing
Advanced electrode and reactor designs for on-site, on-demand chemical generation and energy storage
Haffner Energy
Energy & Power
Producing renewable energy via waste-biomass thermolysis
SpiralWave
Manufacturing & Processing
Low-cost, scalable, high-quality carbon removal using novel electrochemistry
Sora Fuel Corporation
Transportation & Logistics
Cost-effective sustainable aviation fuel
change:WATER Labs
Food, Water, & Land
Low-cost, compact, waterless toilet for non-sewered households and communities
Eden GeoPower
Energy & Power
Electrical Reservoir Stimulation to enhance subsurface permeability
Infinite Foundry
Manufacturing & Processing
Real-time 3D operational models to improve efficiency, lower costs, and enhance sustainability
AllSpice.io
Infrastructure & Construction
A collaboration hub for hardware teams with revision control, design reviews, and releases
Upgraid RE
Infrastructure & Construction
AI and satellite data that diagnose buildings and run energy simulations, to produce ready-to-pitch upgrade proposals
Sublime Systems
Infrastructure & Construction
Decarbonizing cement-making with an electrochemical process that replaces fossil-fuel-fired kilns
NONA Technologies
Food, Water, & Land
Desalinating brackish water with 60% less electricity, fewer chemical inputs, and less downtime
Simlionics
Energy & Power
Physics-aware, advanced AI battery modeling and intelligence for EV and energy-storage systems
XTPL
Manufacturing & Processing
Additive manufacturing technology for ultra-precise printing of nanomaterials
Revvit
Infrastructure & Construction
Low-cost, simple EV charging at commercial, multifamily, fleet parking, and public properties
Flux Marine
Transportation & Logistics
Outboard motors and complete boat packages characterized by low maintenance, long range, and outstanding performance
NewGrid
Energy & Power
Software and services to enable system operators, utilities, and power market participants to reduce grid congestion
Alma Energy
Energy & Power
Geothermal exploration to deliver scaled renewable energy production at economic levels
Wellbore Consultants
Energy & Power
Advanced subsurface stimulation systems to improve resource recovery while reducing energy intensity, water usage, and surface impact
Verdicity
Infrastructure & Construction
AI-enabled, customizable smart building, information, and facility services for building vendors
Dottir Labs
Food, Water, & Land
Sensor technology that provides real-time, detailed chemical analysis of water
Phase Two Chemicals
Manufacturing & Processing
Advanced electrode and reactor designs for on-site, on-demand chemical generation and energy storage
Haffner Energy
Energy & Power
Producing renewable energy via waste-biomass thermolysis
SpiralWave
Manufacturing & Processing
Low-cost, scalable, high-quality carbon removal using novel electrochemistry
Sora Fuel Corporation
Transportation & Logistics
Cost-effective sustainable aviation fuel
change:WATER Labs
Food, Water, & Land
Low-cost, compact, waterless toilet for non-sewered households and communities
Eden GeoPower
Energy & Power
Electrical Reservoir Stimulation to enhance subsurface permeability
Infinite Foundry
Manufacturing & Processing
Real-time 3D operational models to improve efficiency, lower costs, and enhance sustainability
AllSpice.io
Infrastructure & Construction
A collaboration hub for hardware teams with revision control, design reviews, and releases
Upgraid RE
Infrastructure & Construction
AI and satellite data that diagnose buildings and run energy simulations, to produce ready-to-pitch upgrade proposals
Sublime Systems
Infrastructure & Construction
Decarbonizing cement-making with an electrochemical process that replaces fossil-fuel-fired kilns
NONA Technologies
Food, Water, & Land
Desalinating brackish water with 60% less electricity, fewer chemical inputs, and less downtime
Simlionics
Energy & Power
Physics-aware, advanced AI battery modeling and intelligence for EV and energy-storage systems
XTPL
Manufacturing & Processing
Additive manufacturing technology for ultra-precise printing of nanomaterials
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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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.