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
Adaion
Energy & Power
AI-driven grid optimization & integrated system planning platform
Simlionics
Energy & Power
Physics-aware, advanced AI battery modeling and intelligence for EV and energy-storage systems
Lydian
Manufacturing & Processing
Fully electrified reactors for high-efficiency conversion of non-fossil feedstocks into pure syngas
HarvestAi
Food, Water, & Land
Computer vision and AI to provide greenhouse operators with automated data for optimized harvest planning
frakktal
Manufacturing & Processing
Biobased polymer process to upend PVC overuse
Imperium Technologies
Energy & Power
Reducing industrial heating emissions with electrochemical processes
Keysight Technologies (Member Account)
Manufacturing & Processing
World’s leading electronic measurement company
Lasso Labs
Food, Water, & Land
Using natural proteins to create real texture in alternative foods
Capwell Services, Inc.
Energy & Power
Capturing methane emissions from oil and gas facilities, specifically low- and intermittent-flow vents
SkyH2O
Food, Water, & Land
Atmospheric water generation for commercial and government projects
SBD Technologies
Transportation & Logistics
Fully automated, scalable EV home charging and energy optimization solutions for sustainable fleet management
Infinite Foundry
Manufacturing & Processing
Real-time 3D operational models to improve efficiency, lower costs, and enhance sustainability
SPHINX INC
Energy & Power
High-speed 24/7 energy trading with blockchain clarity and instant settlement
Clean Crop Technologies
Food, Water, & Land
Improving food safety and reducing food waste by removing contaminants with food-grade gasses and electricity
NOC Energy
Energy & Power
Decarbonizing industrial heat with power-to-heat and power-to-power solutions
Teal Bio
Manufacturing & Processing
Reusable N95 respirator system for healthcare workers to reduce landfill waste
Solar Mantle
Infrastructure & Construction
Film that reflects sunlight for energy-free passive cooling of structures
PooPoof Inc
Food, Water, & Land
The world’s first pocket-sized bioreactor
Innovator Energy
Energy & Power
Developing and deploying solutions in cooling, heating, and heat transfer
Arbor Energy Holdings Inc
Energy & Power
Digital-energy platform to help homeowners live more sustainably
Adaion
Energy & Power
AI-driven grid optimization & integrated system planning platform
Simlionics
Energy & Power
Physics-aware, advanced AI battery modeling and intelligence for EV and energy-storage systems
Lydian
Manufacturing & Processing
Fully electrified reactors for high-efficiency conversion of non-fossil feedstocks into pure syngas
HarvestAi
Food, Water, & Land
Computer vision and AI to provide greenhouse operators with automated data for optimized harvest planning
frakktal
Manufacturing & Processing
Biobased polymer process to upend PVC overuse
Imperium Technologies
Energy & Power
Reducing industrial heating emissions with electrochemical processes
Keysight Technologies (Member Account)
Manufacturing & Processing
World’s leading electronic measurement company
Lasso Labs
Food, Water, & Land
Using natural proteins to create real texture in alternative foods
Capwell Services, Inc.
Energy & Power
Capturing methane emissions from oil and gas facilities, specifically low- and intermittent-flow vents
SkyH2O
Food, Water, & Land
Atmospheric water generation for commercial and government projects
SBD Technologies
Transportation & Logistics
Fully automated, scalable EV home charging and energy optimization solutions for sustainable fleet management
Infinite Foundry
Manufacturing & Processing
Real-time 3D operational models to improve efficiency, lower costs, and enhance sustainability
SPHINX INC
Energy & Power
High-speed 24/7 energy trading with blockchain clarity and instant settlement
Clean Crop Technologies
Food, Water, & Land
Improving food safety and reducing food waste by removing contaminants with food-grade gasses and electricity
NOC Energy
Energy & Power
Decarbonizing industrial heat with power-to-heat and power-to-power solutions
Teal Bio
Manufacturing & Processing
Reusable N95 respirator system for healthcare workers to reduce landfill waste
Solar Mantle
Infrastructure & Construction
Film that reflects sunlight for energy-free passive cooling of structures
PooPoof Inc
Food, Water, & Land
The world’s first pocket-sized bioreactor
Innovator Energy
Energy & Power
Developing and deploying solutions in cooling, heating, and heat transfer
Arbor Energy Holdings Inc
Energy & Power
Digital-energy platform to help homeowners live more sustainably
AMPeers
Energy & Power
Advanced MOCVD resulting in high-temp superconductors with higher performance, faster output, and lower cost
Active Surfaces
Energy & Power
Flexible, lightweight solar panels that turn any surface into solar
Anvil Capture Systems
Manufacturing & Processing
CO2 direct air mineralization process, delivering carbon dioxide removal
String Data Motion
Infrastructure & Construction
Agentic AI for energy companies. Agents in motion. Outcomes delivered.
Hera Materials
Manufacturing & Processing
Regenerative plastics made from diverse, local biomass, powered by robotics and AI
QuantAQ
Infrastructure & Construction
Air quality-monitoring networks that combine IoT hardware, machine learning, and user-friendly software design
SWERV
Infrastructure & Construction
Making homes healthier, more comfortable, and more energy efficient through reimagined and easy to install ventilation
RIVSAL HOLDINGS INC.
Energy & Power
Power plants that run on water and deliver electricity to avoid grid vulnerability and energy price volatility
Universal Matter Inc.
Manufacturing & Processing
Producing graphene from carbon waste streams
Form Energy
Energy & Power
Cost-effective, multi-day energy-storage solutions
Rushnu
Manufacturing & Processing
Turns waste into carbon-neutral chemistry
Nth Cycle
Manufacturing & Processing
Using electro-extraction to recover production-grade critical minerals from e-waste, low-grade ore, and mine tailings
Agrilab Technologies Inc.
Food, Water, & Land
Modular compost-aeration and heat-recovery systems
Overstory
Food, Water, & Land
Minimizing vegetation contact with power lines using satellite imagery, climate data, and machine learning
XMtrace
Manufacturing & Processing
Low-cost methane monitoring with real-time detection and autonomous response
Octavia Carbon Co
Manufacturing & Processing
Geothermal heat to capture and mineralize CO₂
Thalon Materials
Florrent
Food, Water, & Land
High-energy-density supercapacitors for energy storage, made from domestic biomass waste
Fluor Enterprises, Inc.
Energy & Power
Leading global engineering, procurement and construction (EPC) company
Browning the Green Space
Food, Water, & Land
Addressing diversity, equity, and inclusion across careers, companies, contracts, capital, and communities
AMPeers
Energy & Power
Advanced MOCVD resulting in high-temp superconductors with higher performance, faster output, and lower cost
Active Surfaces
Energy & Power
Flexible, lightweight solar panels that turn any surface into solar
Anvil Capture Systems
Manufacturing & Processing
CO2 direct air mineralization process, delivering carbon dioxide removal
String Data Motion
Infrastructure & Construction
Agentic AI for energy companies. Agents in motion. Outcomes delivered.
Hera Materials
Manufacturing & Processing
Regenerative plastics made from diverse, local biomass, powered by robotics and AI
QuantAQ
Infrastructure & Construction
Air quality-monitoring networks that combine IoT hardware, machine learning, and user-friendly software design
SWERV
Infrastructure & Construction
Making homes healthier, more comfortable, and more energy efficient through reimagined and easy to install ventilation
RIVSAL HOLDINGS INC.
Energy & Power
Power plants that run on water and deliver electricity to avoid grid vulnerability and energy price volatility
Universal Matter Inc.
Manufacturing & Processing
Producing graphene from carbon waste streams
Form Energy
Energy & Power
Cost-effective, multi-day energy-storage solutions
Rushnu
Manufacturing & Processing
Turns waste into carbon-neutral chemistry
Nth Cycle
Manufacturing & Processing
Using electro-extraction to recover production-grade critical minerals from e-waste, low-grade ore, and mine tailings
Agrilab Technologies Inc.
Food, Water, & Land
Modular compost-aeration and heat-recovery systems
Overstory
Food, Water, & Land
Minimizing vegetation contact with power lines using satellite imagery, climate data, and machine learning
XMtrace
Manufacturing & Processing
Low-cost methane monitoring with real-time detection and autonomous response
Octavia Carbon Co
Manufacturing & Processing
Geothermal heat to capture and mineralize CO₂
Thalon Materials
Florrent
Food, Water, & Land
High-energy-density supercapacitors for energy storage, made from domestic biomass waste
Fluor Enterprises, Inc.
Energy & Power
Leading global engineering, procurement and construction (EPC) company
Browning the Green Space
Food, Water, & Land
Addressing diversity, equity, and inclusion across careers, companies, contracts, capital, and communities
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.