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
All-time
0
Currently home to
0
0+
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.























