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
Fresh Inset
Food, Water, & Land
Improving fresh produce’s shelf life, appearance, and quality
Verdicity
Infrastructure & Construction
AI-enabled, customizable smart building, information, and facility services for building vendors
Helix Earth Technologies
Infrastructure & Construction
Improving energy efficiency and minimizing emissions through a droplet-capture filtration system
Glimpse Engineering
Manufacturing & Processing
Visualizing battery scans and continuously monitoring key battery-design features
AtmoSpark Technologies
Food, Water, & Land
Atmospheric-water-generation systems that provide freshwater to those with limited access or in remote locations
FLUIDXLAB Americas Inc.
Manufacturing & Processing
AI-powered microfluidic tools that help control and improve fluid processes across many industries
Mars Materials
Manufacturing & Processing
Converting CO₂ and biomass into acrylonitrile
Pike Robotics
Energy & Power
Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces
Carbon To Stone
Energy & Power
Carbon-mineralization technology with high-value minerals and metals recovery
Clarity Castle
Infrastructure & Construction
Modular, soundproof work pods made from recycled materials
REON Technology
Energy & Power
AI-driven optimization of systems through tailored power management of batteries and PV panels for energy storage
Andros Innovations
Manufacturing & Processing
Reducing the costs and energy demands of ammonia production through advanced reactor technology
Daniel Consulting Group, LLC
Energy & Power
Helping researchers improve battery and cell testing and providing due diligence for potential investors
AMPeers
Energy & Power
Advanced MOCVD resulting in high-temp superconductors with higher performance, faster output, and lower cost
Boxes
Manufacturing & Processing
Smart, affordable, and sustainable retail combining the physical and digital worlds
Ivys Energy Solutions
Energy & Power
On-site hydrogen-generation and -dispensing appliance that uses water and electricity to make fuel-cell-grade hydrogen
ThermaFuels
Transportation & Logistics
Deploying scalable, financeable low-carbon methanol and sustainable fuel infrastructure
SBD Technologies
Transportation & Logistics
Fully automated, scalable EV home charging and energy optimization solutions for sustainable fleet management
GigaDAC
Energy & Power
Direct air capture optimized for gigaton scale
Decimetrix
Energy & Power
AI platform to help clients measure their carbon footprint
Fresh Inset
Food, Water, & Land
Improving fresh produce’s shelf life, appearance, and quality
Verdicity
Infrastructure & Construction
AI-enabled, customizable smart building, information, and facility services for building vendors
Helix Earth Technologies
Infrastructure & Construction
Improving energy efficiency and minimizing emissions through a droplet-capture filtration system
Glimpse Engineering
Manufacturing & Processing
Visualizing battery scans and continuously monitoring key battery-design features
AtmoSpark Technologies
Food, Water, & Land
Atmospheric-water-generation systems that provide freshwater to those with limited access or in remote locations
FLUIDXLAB Americas Inc.
Manufacturing & Processing
AI-powered microfluidic tools that help control and improve fluid processes across many industries
Mars Materials
Manufacturing & Processing
Converting CO₂ and biomass into acrylonitrile
Pike Robotics
Energy & Power
Wall-crawling robots with advanced sensors to perform in-service inspections inside hazardous spaces
Carbon To Stone
Energy & Power
Carbon-mineralization technology with high-value minerals and metals recovery
Clarity Castle
Infrastructure & Construction
Modular, soundproof work pods made from recycled materials
REON Technology
Energy & Power
AI-driven optimization of systems through tailored power management of batteries and PV panels for energy storage
Andros Innovations
Manufacturing & Processing
Reducing the costs and energy demands of ammonia production through advanced reactor technology
Daniel Consulting Group, LLC
Energy & Power
Helping researchers improve battery and cell testing and providing due diligence for potential investors
AMPeers
Energy & Power
Advanced MOCVD resulting in high-temp superconductors with higher performance, faster output, and lower cost
Boxes
Manufacturing & Processing
Smart, affordable, and sustainable retail combining the physical and digital worlds
Ivys Energy Solutions
Energy & Power
On-site hydrogen-generation and -dispensing appliance that uses water and electricity to make fuel-cell-grade hydrogen
ThermaFuels
Transportation & Logistics
Deploying scalable, financeable low-carbon methanol and sustainable fuel infrastructure
SBD Technologies
Transportation & Logistics
Fully automated, scalable EV home charging and energy optimization solutions for sustainable fleet management
GigaDAC
Energy & Power
Direct air capture optimized for gigaton scale
Decimetrix
Energy & Power
AI platform to help clients measure their carbon footprint
Nth Cycle
Manufacturing & Processing
Using electro-extraction to recover production-grade critical minerals from e-waste, low-grade ore, and mine tailings
Candid Intelligence
Infrastructure & Construction
Accelerating pre-construction engineering with Agentic AI
Upgraid RE
Infrastructure & Construction
AI and satellite data that diagnose buildings and run energy simulations, to produce ready-to-pitch upgrade proposals
American Battery Technology Company
Energy & Power
Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company
R&P Employer Solutions
Manufacturing & Processing
HR services, workers compensation, payroll, benefits, and compliance for Houston-area employers
Verde Technologies
Energy & Power
Lightweight, flexible perovskite solar panels for mass industrial and commercial adoption
DrinKicks
Food, Water, & Land
Repurposing food waste and recycled materials into shoes
Amplified Industries
Infrastructure & Construction
AI-driven control solution for oil wells using acoustic signals and edge computing to reduce costs and detect issues
EVident Battery
Transportation & Logistics
Comprehensive, non-destructive inspection solutions for EV battery packs
Circular Materials
Manufacturing & Processing
Critical raw materials from industrial wastewater
Nominal
Manufacturing & Processing
Software that lets hardware teams test and iterate as fast as software teams
Flight Guard AI
Transportation & Logistics
Pilot-wearable safety systems using human-centered AI to enhance pilot awareness
Cellen
Transportation & Logistics
Hydrogen-powered drones, combining UAV technology with hydrogen refueling solutions
Adept Materials
Infrastructure & Construction
Material innovations that improve moisture regulation, comfort, and energy efficiency
Newfound Materials
Manufacturing & Processing
Predictive engine for materials R&D for new pathways to critical minerals
Sublime Systems
Infrastructure & Construction
Decarbonizing cement-making with an electrochemical process that replaces fossil-fuel-fired kilns
CLS Wind
Energy & Power
Self-erecting system for installing wind turbines
Arbor Energy Holdings Inc
Energy & Power
Digital-energy platform to help homeowners live more sustainably
Lasso Labs
Food, Water, & Land
Using natural proteins to create real texture in alternative foods
Sparkplug Power
Energy & Power
Energy-storage-as-a-service for municipal utilities and commercial businesses
Nth Cycle
Manufacturing & Processing
Using electro-extraction to recover production-grade critical minerals from e-waste, low-grade ore, and mine tailings
Candid Intelligence
Infrastructure & Construction
Accelerating pre-construction engineering with Agentic AI
Upgraid RE
Infrastructure & Construction
AI and satellite data that diagnose buildings and run energy simulations, to produce ready-to-pitch upgrade proposals
American Battery Technology Company
Energy & Power
Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company
R&P Employer Solutions
Manufacturing & Processing
HR services, workers compensation, payroll, benefits, and compliance for Houston-area employers
Verde Technologies
Energy & Power
Lightweight, flexible perovskite solar panels for mass industrial and commercial adoption
DrinKicks
Food, Water, & Land
Repurposing food waste and recycled materials into shoes
Amplified Industries
Infrastructure & Construction
AI-driven control solution for oil wells using acoustic signals and edge computing to reduce costs and detect issues
EVident Battery
Transportation & Logistics
Comprehensive, non-destructive inspection solutions for EV battery packs
Circular Materials
Manufacturing & Processing
Critical raw materials from industrial wastewater
Nominal
Manufacturing & Processing
Software that lets hardware teams test and iterate as fast as software teams
Flight Guard AI
Transportation & Logistics
Pilot-wearable safety systems using human-centered AI to enhance pilot awareness
Cellen
Transportation & Logistics
Hydrogen-powered drones, combining UAV technology with hydrogen refueling solutions
Adept Materials
Infrastructure & Construction
Material innovations that improve moisture regulation, comfort, and energy efficiency
Newfound Materials
Manufacturing & Processing
Predictive engine for materials R&D for new pathways to critical minerals
Sublime Systems
Infrastructure & Construction
Decarbonizing cement-making with an electrochemical process that replaces fossil-fuel-fired kilns
CLS Wind
Energy & Power
Self-erecting system for installing wind turbines
Arbor Energy Holdings Inc
Energy & Power
Digital-energy platform to help homeowners live more sustainably
Lasso Labs
Food, Water, & Land
Using natural proteins to create real texture in alternative foods
Sparkplug Power
Energy & Power
Energy-storage-as-a-service for municipal utilities and commercial businesses
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.