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
Revvit
Infrastructure & Construction
Low-cost, simple EV charging at commercial, multifamily, fleet parking, and public properties
SWERV
Infrastructure & Construction
Making homes healthier, more comfortable, and more energy efficient through reimagined and easy to install ventilation
Cocoa Potash
Food, Water, & Land
Diffraqtion
Energy & Power
AI cameras powering ultra high-resolution Earth and Space imaging
Julius Education
Infrastructure & Construction
Helping green organizations manage the changing workforce through an experience platform for job-seekers
Tato Labs
Manufacturing & Processing
Bioplastic products and packaging solutions made from potato starch
Active Surfaces
Energy & Power
Flexible, lightweight solar panels that turn any surface into solar
AgZen
Food, Water, & Land
AI that monitors leaf coverage during spraying to reduce pesticide usage
Massachusetts Materials Technologies
Energy & Power
Seamlessly measuring the mechanical properties of pipelines without interruption
Solar Materials
Energy & Power
Recovered and recycled secondary solar panel materials
QEA Tech
Energy & Power
Precise, data-driven building-envelope audits using patented AI software, drones, and thermography
American Battery Technology Company
Energy & Power
Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company
Fresh Inset
Food, Water, & Land
Improving fresh produce’s shelf life, appearance, and quality
Universal Matter Inc.
Manufacturing & Processing
Producing graphene from carbon waste streams
PlaSene
Manufacturing & Processing
Converting plastic waste into liquid fuel and low-carbon hydrogen
Suyana Climate Insurance
Lite-1
Manufacturing & Processing
Clean, scalable, microbe-made colour to replace toxic dyes
Overstory
Food, Water, & Land
Minimizing vegetation contact with power lines using satellite imagery, climate data, and machine learning
BlueShift Carbon
Manufacturing & Processing
Electrochemical CO₂-removal solution that’s low-cost, energy-efficient, redox-based, and membrane-free
PooPoof Inc
Food, Water, & Land
The world’s first pocket-sized bioreactor
Revvit
Infrastructure & Construction
Low-cost, simple EV charging at commercial, multifamily, fleet parking, and public properties
SWERV
Infrastructure & Construction
Making homes healthier, more comfortable, and more energy efficient through reimagined and easy to install ventilation
Cocoa Potash
Food, Water, & Land
Diffraqtion
Energy & Power
AI cameras powering ultra high-resolution Earth and Space imaging
Julius Education
Infrastructure & Construction
Helping green organizations manage the changing workforce through an experience platform for job-seekers
Tato Labs
Manufacturing & Processing
Bioplastic products and packaging solutions made from potato starch
Active Surfaces
Energy & Power
Flexible, lightweight solar panels that turn any surface into solar
AgZen
Food, Water, & Land
AI that monitors leaf coverage during spraying to reduce pesticide usage
Massachusetts Materials Technologies
Energy & Power
Seamlessly measuring the mechanical properties of pipelines without interruption
Solar Materials
Energy & Power
Recovered and recycled secondary solar panel materials
QEA Tech
Energy & Power
Precise, data-driven building-envelope audits using patented AI software, drones, and thermography
American Battery Technology Company
Energy & Power
Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company
Fresh Inset
Food, Water, & Land
Improving fresh produce’s shelf life, appearance, and quality
Universal Matter Inc.
Manufacturing & Processing
Producing graphene from carbon waste streams
PlaSene
Manufacturing & Processing
Converting plastic waste into liquid fuel and low-carbon hydrogen
Suyana Climate Insurance
Lite-1
Manufacturing & Processing
Clean, scalable, microbe-made colour to replace toxic dyes
Overstory
Food, Water, & Land
Minimizing vegetation contact with power lines using satellite imagery, climate data, and machine learning
BlueShift Carbon
Manufacturing & Processing
Electrochemical CO₂-removal solution that’s low-cost, energy-efficient, redox-based, and membrane-free
PooPoof Inc
Food, Water, & Land
The world’s first pocket-sized bioreactor
Solas Capture
Solas Capture is developing a sunlight-powered process for sustainable lithium carbonate production using novel photobase chemistry. Our technology converts lithium brines and CO₂ into battery-grade materials with lower energy use, reduced waste, and a significantly smaller environmental footprint than conventional methods.
Pike Robotics
Energy & Power
Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces
Ensovi
Manufacturing & Processing
Cofactor recycling platform for sustainable drug manufacturing
Phoenix Tailings
Manufacturing & Processing
Waste-free, net-zero, cost-competitive rare-earth-metal refining
Electric Hydrogen
Energy & Power
Manufactureing the world’s most powerful electrolyzers to produce the lowest cost clean hydrogen
Latitude Media
News, podcasts, market intelligence, and events for the climatetech industry
Prithvi Ventures
Investing in startups reducing emissions with unique solutions for net-zero goals
TransOceans Clean Energy Risk, LLC
Energy & Power
Risk management solutions for global clean tech risk portfolios
Upgraid
Infrastructure & Construction
AI and satellite data that diagnose buildings and run energy simulations, to produce ready-to-pitch upgrade proposals
Catalyxx
Manufacturing & Processing
Catalytic tech to turn bio-ethanol into high-value, carbon-negative chemicals
Aeromine Technologies, Inc.
Energy & Power
Bladeless, motionless wind turbines for the built environment
MoveEV
Transportation & Logistics
Mitigating Scope 1 & 3 emissions for businesses while providing cost savings for employees
AllSpice.io
Infrastructure & Construction
A collaboration hub for hardware teams with revision control, design reviews, and releases
ZERO Homes
Infrastructure & Construction
Automated assessment, design, and procurement platform for residential building retrofits
FLUIDXLAB Americas Inc.
Manufacturing & Processing
AI-powered microfluidic tools that help control and improve fluid processes across many industries
Lasso Labs
Food, Water, & Land
Using natural proteins to create real texture in alternative foods
Biosimo
Manufacturing & Processing
Biosimo makes eco-friendly chemicals from plant waste using a clean, low-cost process
String Data Motion
Infrastructure & Construction
Agentic AI for energy companies. Agents in motion. Outcomes delivered.
3D Architech, Inc.
Manufacturing & Processing
Ultra-fine and gel-based metal manufacturing, creating high-efficiency microstructures for cooling and clean energy
NewGrid
Energy & Power
Software and services to enable system operators, utilities, and power market participants to reduce grid congestion
Solas Capture
Solas Capture is developing a sunlight-powered process for sustainable lithium carbonate production using novel photobase chemistry. Our technology converts lithium brines and CO₂ into battery-grade materials with lower energy use, reduced waste, and a significantly smaller environmental footprint than conventional methods.
Pike Robotics
Energy & Power
Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces
Ensovi
Manufacturing & Processing
Cofactor recycling platform for sustainable drug manufacturing
Phoenix Tailings
Manufacturing & Processing
Waste-free, net-zero, cost-competitive rare-earth-metal refining
Electric Hydrogen
Energy & Power
Manufactureing the world’s most powerful electrolyzers to produce the lowest cost clean hydrogen
Latitude Media
News, podcasts, market intelligence, and events for the climatetech industry
Prithvi Ventures
Investing in startups reducing emissions with unique solutions for net-zero goals
TransOceans Clean Energy Risk, LLC
Energy & Power
Risk management solutions for global clean tech risk portfolios
Upgraid
Infrastructure & Construction
AI and satellite data that diagnose buildings and run energy simulations, to produce ready-to-pitch upgrade proposals
Catalyxx
Manufacturing & Processing
Catalytic tech to turn bio-ethanol into high-value, carbon-negative chemicals
Aeromine Technologies, Inc.
Energy & Power
Bladeless, motionless wind turbines for the built environment
MoveEV
Transportation & Logistics
Mitigating Scope 1 & 3 emissions for businesses while providing cost savings for employees
AllSpice.io
Infrastructure & Construction
A collaboration hub for hardware teams with revision control, design reviews, and releases
ZERO Homes
Infrastructure & Construction
Automated assessment, design, and procurement platform for residential building retrofits
FLUIDXLAB Americas Inc.
Manufacturing & Processing
AI-powered microfluidic tools that help control and improve fluid processes across many industries
Lasso Labs
Food, Water, & Land
Using natural proteins to create real texture in alternative foods
Biosimo
Manufacturing & Processing
Biosimo makes eco-friendly chemicals from plant waste using a clean, low-cost process
String Data Motion
Infrastructure & Construction
Agentic AI for energy companies. Agents in motion. Outcomes delivered.
3D Architech, Inc.
Manufacturing & Processing
Ultra-fine and gel-based metal manufacturing, creating high-efficiency microstructures for cooling and clean energy
NewGrid
Energy & Power
Software and services to enable system operators, utilities, and power market participants to reduce grid congestion
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.