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
Anning Corporation
Energy & Power
Targeting iron-rich rocks to produce hydrogen
SkyH2O
Food, Water, & Land
Atmospheric water generation for commercial and government projects
BLU NXT
Energy & Power
Solar concentrators for high-temperature heat and energy
Pike Robotics
Energy & Power
Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces
Decimetrix
Energy & Power
AI platform to help clients measure their carbon footprint
SpringCycle Energy
Energy & Power
Rechargeable iron fuel to transform solar into baseload power
HEXAspec
Energy & Power
Thermal management solutions for semiconductor chips, enabling more powerful hardware
Lasso Labs
Food, Water, & Land
Using natural proteins to create real texture in alternative foods
ATS Energy
Energy & Power
Converting waste heat into power without any moving parts
Flux Marine
Transportation & Logistics
Outboard motors and complete boat packages characterized by low maintenance, long range, and outstanding performance
Florrent
Food, Water, & Land
High-energy-density supercapacitors for energy storage, made from domestic biomass waste
Browning the Green Space
Food, Water, & Land
Addressing diversity, equity, and inclusion across careers, companies, contracts, capital, and communities
Focis AI
FocisAI uses AI and 3D scan data to automatically identify and map infrastructure in industrial facilities, turning complex environments into actionable digital intelligence. Our platform enables faster inspections, improved safety, and more efficient operations across heavy industry.
Cemvita
Manufacturing & Processing
Engineered microbes to transform CO₂ and other wastes into valuable compounds, closing the carbon and waste loop
SRECTrade
Energy & Power
Management and transaction platform for environmental commodities to reduce costs and increase transparency
CLS Wind
Energy & Power
Self-erecting system for installing wind turbines
Titan Advanced Energy Solutions
Energy & Power
Advanced battery management systems for lithium-ion batteries
Elementa Partners
Infrastructure & Construction
Uniting global talent to unlock high-conviction, institutional-grade investments across Texas growth sectors
Prophet AI
Food, Water, & Land
AI-based poultry-health-monitoring system to reduce chicken mortality, save revenue, and avoid carbon emissions
Arbor Energy Holdings Inc
Energy & Power
Digital-energy platform to help homeowners live more sustainably
Anning Corporation
Energy & Power
Targeting iron-rich rocks to produce hydrogen
SkyH2O
Food, Water, & Land
Atmospheric water generation for commercial and government projects
BLU NXT
Energy & Power
Solar concentrators for high-temperature heat and energy
Pike Robotics
Energy & Power
Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces
Decimetrix
Energy & Power
AI platform to help clients measure their carbon footprint
SpringCycle Energy
Energy & Power
Rechargeable iron fuel to transform solar into baseload power
HEXAspec
Energy & Power
Thermal management solutions for semiconductor chips, enabling more powerful hardware
Lasso Labs
Food, Water, & Land
Using natural proteins to create real texture in alternative foods
ATS Energy
Energy & Power
Converting waste heat into power without any moving parts
Flux Marine
Transportation & Logistics
Outboard motors and complete boat packages characterized by low maintenance, long range, and outstanding performance
Florrent
Food, Water, & Land
High-energy-density supercapacitors for energy storage, made from domestic biomass waste
Browning the Green Space
Food, Water, & Land
Addressing diversity, equity, and inclusion across careers, companies, contracts, capital, and communities
Focis AI
FocisAI uses AI and 3D scan data to automatically identify and map infrastructure in industrial facilities, turning complex environments into actionable digital intelligence. Our platform enables faster inspections, improved safety, and more efficient operations across heavy industry.
Cemvita
Manufacturing & Processing
Engineered microbes to transform CO₂ and other wastes into valuable compounds, closing the carbon and waste loop
SRECTrade
Energy & Power
Management and transaction platform for environmental commodities to reduce costs and increase transparency
CLS Wind
Energy & Power
Self-erecting system for installing wind turbines
Titan Advanced Energy Solutions
Energy & Power
Advanced battery management systems for lithium-ion batteries
Elementa Partners
Infrastructure & Construction
Uniting global talent to unlock high-conviction, institutional-grade investments across Texas growth sectors
Prophet AI
Food, Water, & Land
AI-based poultry-health-monitoring system to reduce chicken mortality, save revenue, and avoid carbon emissions
Arbor Energy Holdings Inc
Energy & Power
Digital-energy platform to help homeowners live more sustainably
AeroShield Materials
Infrastructure & Construction
Insulating, porous aerogels for energy-efficient windows
Laminar
Manufacturing & Processing
IoT platform optimizing industrial liquid and fluid systems in supply chain, manufacturing, and data centers
Circular Materials
Manufacturing & Processing
Critical raw materials from industrial wastewater
Capwell Services, Inc.
Energy & Power
Capturing methane emissions from oil and gas facilities, specifically low- and intermittent-flow vents
WISE ENERGIE
Energy & Power
Blending vertical-axis wind, solar PV, and battery storage into a single, silent system generating 24/7 clean power
Upgraid RE
Infrastructure & Construction
AI and satellite data that diagnose buildings and run energy simulations, to produce ready-to-pitch upgrade proposals
Swiss Vault
Manufacturing & Processing
Revolutionizing Data Infrastructure for the AI Era
NeuraliX
Energy & Power
AI solutions to optimize operations and reduce emissions for the energy and manufacturing sectors
Dottir Labs
Food, Water, & Land
Sensor technology that provides real-time, detailed chemical analysis of water
Realizse
Energy & Power
Tokenization and product verification for circularity, energy, and the real estate markets
Packwise
Manufacturing & Processing
IIoT sensors combined with a software and analytics platform to optimize industrial supply chains
Helix Earth Technologies
Infrastructure & Construction
Improving energy efficiency and minimizing emissions through a droplet-capture filtration system
QEA Tech
Energy & Power
Precise, data-driven building-envelope audits using patented AI software, drones, and thermography
Highland Park Technologies
Infrastructure & Construction
Insulated cladding and building envelope retrofits at a fraction of the cost
Boot Box Labs
Energy & Power
Compact, refrigerant-free thermoelectric heat pump for quiet, efficient, climate-neutral HVAC
Singularity Energy
Energy & Power
Data and software solutions for grid decarbonization
Imperium Technologies
Energy & Power
Reducing industrial heating emissions with electrochemical processes
Beacon Climate Innovations
Energy & Power
Filling gaps between the frontlines of climate change and the emerging technologies that can best address them
Conduit Tech
Infrastructure & Construction
Supporting HVAC contractors through design, sales, and installation
Tato Labs
Manufacturing & Processing
Bioplastic products and packaging solutions made from potato starch
AeroShield Materials
Infrastructure & Construction
Insulating, porous aerogels for energy-efficient windows
Laminar
Manufacturing & Processing
IoT platform optimizing industrial liquid and fluid systems in supply chain, manufacturing, and data centers
Circular Materials
Manufacturing & Processing
Critical raw materials from industrial wastewater
Capwell Services, Inc.
Energy & Power
Capturing methane emissions from oil and gas facilities, specifically low- and intermittent-flow vents
WISE ENERGIE
Energy & Power
Blending vertical-axis wind, solar PV, and battery storage into a single, silent system generating 24/7 clean power
Upgraid RE
Infrastructure & Construction
AI and satellite data that diagnose buildings and run energy simulations, to produce ready-to-pitch upgrade proposals
Swiss Vault
Manufacturing & Processing
Revolutionizing Data Infrastructure for the AI Era
NeuraliX
Energy & Power
AI solutions to optimize operations and reduce emissions for the energy and manufacturing sectors
Dottir Labs
Food, Water, & Land
Sensor technology that provides real-time, detailed chemical analysis of water
Realizse
Energy & Power
Tokenization and product verification for circularity, energy, and the real estate markets
Packwise
Manufacturing & Processing
IIoT sensors combined with a software and analytics platform to optimize industrial supply chains
Helix Earth Technologies
Infrastructure & Construction
Improving energy efficiency and minimizing emissions through a droplet-capture filtration system
QEA Tech
Energy & Power
Precise, data-driven building-envelope audits using patented AI software, drones, and thermography
Highland Park Technologies
Infrastructure & Construction
Insulated cladding and building envelope retrofits at a fraction of the cost
Boot Box Labs
Energy & Power
Compact, refrigerant-free thermoelectric heat pump for quiet, efficient, climate-neutral HVAC
Singularity Energy
Energy & Power
Data and software solutions for grid decarbonization
Imperium Technologies
Energy & Power
Reducing industrial heating emissions with electrochemical processes
Beacon Climate Innovations
Energy & Power
Filling gaps between the frontlines of climate change and the emerging technologies that can best address them
Conduit Tech
Infrastructure & Construction
Supporting HVAC contractors through design, sales, and installation
Tato Labs
Manufacturing & Processing
Bioplastic products and packaging solutions made from potato starch
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.