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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Currently home to
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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.























