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
Agrilab Technologies Inc.
Food, Water, & Land
Modular compost-aeration and heat-recovery systems
Imperium Technologies
Energy & Power
Reducing industrial heating emissions with electrochemical processes
AeroShield Materials
Infrastructure & Construction
Insulating, porous aerogels for energy-efficient windows
Prophet AI
Food, Water, & Land
AI-based poultry-health-monitoring system to reduce chicken mortality, save revenue, and avoid carbon emissions
R&P Employer Solutions
Manufacturing & Processing
HR services, workers compensation, payroll, benefits, and compliance for Houston-area employers
GS Vortex Systems
Food, Water, & Land
Hydrodynamic flow technology reducing flow resistance through pipes
AgZen
Food, Water, & Land
AI that monitors leaf coverage during spraying to reduce pesticide usage
Nebumi
Energy & Power
Emissions intelligence platform, monitoring pollution with satellite data and AI
Torres Orbital Mining Inc (TOM)
Infrastructure & Construction
Autonomous lunar excavation systems for dust-free regolith mining and space operations
Browning the Green Space
Food, Water, & Land
Addressing diversity, equity, and inclusion across careers, companies, contracts, capital, and communities
Turnover Labs
Manufacturing & Processing
Modular electrolyzers converting dirty onsite CO₂ into basic chemicals
FLUIDXLAB Americas Inc.
Manufacturing & Processing
AI-powered microfluidic tools that help control and improve fluid processes across many industries
Peak Power
Energy & Power
Energy-storage optimization software for commercial and industrial customers and energy storage project developers
Glimpse Engineering
Manufacturing & Processing
Visualizing battery scans and continuously monitoring key battery-design features
Reframe Systems
Infrastructure & Construction
Offsite construction of zero-carbon buildings with volumetric modules manufactured with robotic microfactories
Dottir Labs
Food, Water, & Land
Sensor technology that provides real-time, detailed chemical analysis of water
Element Resources
Energy & Power
Developing large-scale green hydrogen projects
Cala Systems
Energy & Power
Intelligent heat-pump water heaters
Suyana Climate Insurance
NeuroBionics
Manufacturing & Processing
Sustainability-focused device for minimally-invasive endovascular deep-brain stimulation for stroke rehabilitation
Agrilab Technologies Inc.
Food, Water, & Land
Modular compost-aeration and heat-recovery systems
Imperium Technologies
Energy & Power
Reducing industrial heating emissions with electrochemical processes
AeroShield Materials
Infrastructure & Construction
Insulating, porous aerogels for energy-efficient windows
Prophet AI
Food, Water, & Land
AI-based poultry-health-monitoring system to reduce chicken mortality, save revenue, and avoid carbon emissions
R&P Employer Solutions
Manufacturing & Processing
HR services, workers compensation, payroll, benefits, and compliance for Houston-area employers
GS Vortex Systems
Food, Water, & Land
Hydrodynamic flow technology reducing flow resistance through pipes
AgZen
Food, Water, & Land
AI that monitors leaf coverage during spraying to reduce pesticide usage
Nebumi
Energy & Power
Emissions intelligence platform, monitoring pollution with satellite data and AI
Torres Orbital Mining Inc (TOM)
Infrastructure & Construction
Autonomous lunar excavation systems for dust-free regolith mining and space operations
Browning the Green Space
Food, Water, & Land
Addressing diversity, equity, and inclusion across careers, companies, contracts, capital, and communities
Turnover Labs
Manufacturing & Processing
Modular electrolyzers converting dirty onsite CO₂ into basic chemicals
FLUIDXLAB Americas Inc.
Manufacturing & Processing
AI-powered microfluidic tools that help control and improve fluid processes across many industries
Peak Power
Energy & Power
Energy-storage optimization software for commercial and industrial customers and energy storage project developers
Glimpse Engineering
Manufacturing & Processing
Visualizing battery scans and continuously monitoring key battery-design features
Reframe Systems
Infrastructure & Construction
Offsite construction of zero-carbon buildings with volumetric modules manufactured with robotic microfactories
Dottir Labs
Food, Water, & Land
Sensor technology that provides real-time, detailed chemical analysis of water
Element Resources
Energy & Power
Developing large-scale green hydrogen projects
Cala Systems
Energy & Power
Intelligent heat-pump water heaters
Suyana Climate Insurance
NeuroBionics
Manufacturing & Processing
Sustainability-focused device for minimally-invasive endovascular deep-brain stimulation for stroke rehabilitation
DrinKicks
Food, Water, & Land
Repurposing food waste and recycled materials into shoes
Raptor Maps
Energy & Power
AI software to increase solar farm power production, reduce operational risk, and lower costs
NeuraliX
Energy & Power
AI solutions to optimize operations and reduce emissions for the energy and manufacturing sectors
InnoEnergy (Member Account)
Energy & Power
Industrializing cleantech innovation to enable and grow a global net-zero economy
Ocean Visuals
Food, Water, & Land
Patented hyper-spectral LiDAR for real-time detection of oil and organics
Boxes
Manufacturing & Processing
Smart, affordable, and sustainable retail combining the physical and digital worlds
frakktal
Manufacturing & Processing
Biobased polymer process to upend PVC overuse
String Data Motion
Infrastructure & Construction
Agentic AI for energy companies. Agents in motion. Outcomes delivered.
Lumiere Solutions
Infrastructure & Construction
Residential low-voltage and automated single efficiency-driven ecosystems that reduce energy waste
Helium Capital
Infrastructure & Construction
Supporting growing small businesses
Adiabatic Materials
Manufacturing & Processing
Unlocking clean, affordable chemical production with electricity
HEXAspec
Energy & Power
Thermal management solutions for semiconductor chips, enabling more powerful hardware
New Mantle Technologies
Energy & Power
Subsurface characterization with physics and AI
Ohm Analytics
Energy & Power
Aggregating clean energy data based on thousands of sources for visibility and intelligence in the U.S. solar market
HKG Energy
Energy & Power
Silicon materials that increase battery energy density
Mission Zero Technologies
Manufacturing & Processing
Efficient electrochemistry to capture CO₂
Monaire
Infrastructure & Construction
Reducing HVAC energy use and repair costs for small commercial buildings
Intention
Energy & Power
Climate-infrastructure-investment platform
Upgraid
Infrastructure & Construction
AI and satellite data that diagnose buildings and run energy simulations, to produce ready-to-pitch upgrade proposals
Active Surfaces
Energy & Power
Flexible, lightweight solar panels that turn any surface into solar
DrinKicks
Food, Water, & Land
Repurposing food waste and recycled materials into shoes
Raptor Maps
Energy & Power
AI software to increase solar farm power production, reduce operational risk, and lower costs
NeuraliX
Energy & Power
AI solutions to optimize operations and reduce emissions for the energy and manufacturing sectors
InnoEnergy (Member Account)
Energy & Power
Industrializing cleantech innovation to enable and grow a global net-zero economy
Ocean Visuals
Food, Water, & Land
Patented hyper-spectral LiDAR for real-time detection of oil and organics
Boxes
Manufacturing & Processing
Smart, affordable, and sustainable retail combining the physical and digital worlds
frakktal
Manufacturing & Processing
Biobased polymer process to upend PVC overuse
String Data Motion
Infrastructure & Construction
Agentic AI for energy companies. Agents in motion. Outcomes delivered.
Lumiere Solutions
Infrastructure & Construction
Residential low-voltage and automated single efficiency-driven ecosystems that reduce energy waste
Helium Capital
Infrastructure & Construction
Supporting growing small businesses
Adiabatic Materials
Manufacturing & Processing
Unlocking clean, affordable chemical production with electricity
HEXAspec
Energy & Power
Thermal management solutions for semiconductor chips, enabling more powerful hardware
New Mantle Technologies
Energy & Power
Subsurface characterization with physics and AI
Ohm Analytics
Energy & Power
Aggregating clean energy data based on thousands of sources for visibility and intelligence in the U.S. solar market
HKG Energy
Energy & Power
Silicon materials that increase battery energy density
Mission Zero Technologies
Manufacturing & Processing
Efficient electrochemistry to capture CO₂
Monaire
Infrastructure & Construction
Reducing HVAC energy use and repair costs for small commercial buildings
Intention
Energy & Power
Climate-infrastructure-investment platform
Upgraid
Infrastructure & Construction
AI and satellite data that diagnose buildings and run energy simulations, to produce ready-to-pitch upgrade proposals
Active Surfaces
Energy & Power
Flexible, lightweight solar panels that turn any surface into solar
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.