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
PV Nano Cell
Energy & Power
Advanced nano conductive pastes enabling finer, faster, and more efficient metallization for next-gen solar cells
Intention
Energy & Power
Climate-infrastructure-investment platform
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
ATOM-X
Energy & Power
Transforming CO₂ into sustainable fuels like green methanol
Solar Materials
Energy & Power
Recovered and recycled secondary solar panel materials
Raptor Maps
Energy & Power
AI software to increase solar farm power production, reduce operational risk, and lower costs
Revterra
Energy & Power
Kinetic stabilizer for instant grid stabilization for industrial manufacturing, data centers, and rapid EV charging
ATS Energy
Energy & Power
Converting waste heat into power without any moving parts
Prophet AI
Food, Water, & Land
AI-based poultry-health-monitoring system to reduce chicken mortality, save revenue, and avoid carbon emissions
Dandelion Energy
Infrastructure & Construction
Geothermal heating and cooling systems for homes
Sparkplug Power
Energy & Power
Energy-storage-as-a-service for municipal utilities and commercial businesses
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
Candid Intelligence
Infrastructure & Construction
Accelerating pre-construction engineering with Agentic AI
Phoenix Tailings
Manufacturing & Processing
Waste-free, net-zero, cost-competitive rare-earth-metal refining
Packwise
Manufacturing & Processing
IIoT sensors combined with a software and analytics platform to optimize industrial supply chains
Revvit
Infrastructure & Construction
Low-cost, simple EV charging at commercial, multifamily, fleet parking, and public properties
ClearTrace
Energy & Power
Product suite for traceable, end-to-end data management of electricity and certificate transactions
EVident Battery
Transportation & Logistics
Comprehensive, non-destructive inspection solutions for EV battery packs
PV Nano Cell
Energy & Power
Advanced nano conductive pastes enabling finer, faster, and more efficient metallization for next-gen solar cells
Intention
Energy & Power
Climate-infrastructure-investment platform
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
ATOM-X
Energy & Power
Transforming CO₂ into sustainable fuels like green methanol
Solar Materials
Energy & Power
Recovered and recycled secondary solar panel materials
Raptor Maps
Energy & Power
AI software to increase solar farm power production, reduce operational risk, and lower costs
Revterra
Energy & Power
Kinetic stabilizer for instant grid stabilization for industrial manufacturing, data centers, and rapid EV charging
ATS Energy
Energy & Power
Converting waste heat into power without any moving parts
Prophet AI
Food, Water, & Land
AI-based poultry-health-monitoring system to reduce chicken mortality, save revenue, and avoid carbon emissions
Dandelion Energy
Infrastructure & Construction
Geothermal heating and cooling systems for homes
Sparkplug Power
Energy & Power
Energy-storage-as-a-service for municipal utilities and commercial businesses
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
Candid Intelligence
Infrastructure & Construction
Accelerating pre-construction engineering with Agentic AI
Phoenix Tailings
Manufacturing & Processing
Waste-free, net-zero, cost-competitive rare-earth-metal refining
Packwise
Manufacturing & Processing
IIoT sensors combined with a software and analytics platform to optimize industrial supply chains
Revvit
Infrastructure & Construction
Low-cost, simple EV charging at commercial, multifamily, fleet parking, and public properties
ClearTrace
Energy & Power
Product suite for traceable, end-to-end data management of electricity and certificate transactions
EVident Battery
Transportation & Logistics
Comprehensive, non-destructive inspection solutions for EV battery packs
Arbor Energy Holdings Inc
Energy & Power
Digital-energy platform to help homeowners live more sustainably
Thiozen
Manufacturing & Processing
Chemical waste-to-hydrogen cycle that removes hydrogen sulfide from gas streams and generates zero-emission hydrogen
TDS Select
Food, Water, & Land
Modular, scalable FCDI system capable of desalinating brackish water using low energy
Kanin Energy
Energy & Power
Monetizing industrial waste heat with reduced deployment risk via third-party financing
Respire Energy
Energy & Power
Safe, low-cost, and long-duration metal-air battery designed for microgrids
Wootz
Manufacturing & Processing
Carbon nanotube supermaterials to replace or augment traditional metallic conductors
Ententia
Energy & Power
Trusted, scalable enterprise AI solutions that turn context into competitive advantage
Elementa Partners
Infrastructure & Construction
Uniting global talent to unlock high-conviction, institutional-grade investments across Texas growth sectors
String Data Motion
Infrastructure & Construction
Agentic AI for energy companies. Agents in motion. Outcomes delivered.
Dottir Labs
Food, Water, & Land
Sensor technology that provides real-time, detailed chemical analysis of water
BiaTech Corporation
Energy & Power
Energy and natural resource infrastructure immersion with AI-enabled edge and cloud technology
DrinKicks
Food, Water, & Land
Repurposing food waste and recycled materials into shoes
KP Labs
Manufacturing & Processing
Modular, biomembrane-based systems for on-site recovery of critical metals from e-waste and industrial residues
Dugu Systems
Energy & Power
Zero-carbon power with an emissions-free gas turbine
FAST Metals
Manufacturing & Processing
Hydrometallurgical-recovery process for extracting rare-earth elements from industrial tailings
New Mantle Technologies
Energy & Power
Subsurface characterization with physics and AI
Cellen
Transportation & Logistics
Hydrogen-powered drones, combining UAV technology with hydrogen refueling solutions
Aluminum Technologies
Manufacturing & Processing
Low-GHG primary aluminum production with Carbo-Chloride Reduction
Anning Corporation
Energy & Power
Targeting iron-rich rocks to produce hydrogen
NONA Technologies
Food, Water, & Land
Desalinating brackish water with 60% less electricity, fewer chemical inputs, and less downtime
Arbor Energy Holdings Inc
Energy & Power
Digital-energy platform to help homeowners live more sustainably
Thiozen
Manufacturing & Processing
Chemical waste-to-hydrogen cycle that removes hydrogen sulfide from gas streams and generates zero-emission hydrogen
TDS Select
Food, Water, & Land
Modular, scalable FCDI system capable of desalinating brackish water using low energy
Kanin Energy
Energy & Power
Monetizing industrial waste heat with reduced deployment risk via third-party financing
Respire Energy
Energy & Power
Safe, low-cost, and long-duration metal-air battery designed for microgrids
Wootz
Manufacturing & Processing
Carbon nanotube supermaterials to replace or augment traditional metallic conductors
Ententia
Energy & Power
Trusted, scalable enterprise AI solutions that turn context into competitive advantage
Elementa Partners
Infrastructure & Construction
Uniting global talent to unlock high-conviction, institutional-grade investments across Texas growth sectors
String Data Motion
Infrastructure & Construction
Agentic AI for energy companies. Agents in motion. Outcomes delivered.
Dottir Labs
Food, Water, & Land
Sensor technology that provides real-time, detailed chemical analysis of water
BiaTech Corporation
Energy & Power
Energy and natural resource infrastructure immersion with AI-enabled edge and cloud technology
DrinKicks
Food, Water, & Land
Repurposing food waste and recycled materials into shoes
KP Labs
Manufacturing & Processing
Modular, biomembrane-based systems for on-site recovery of critical metals from e-waste and industrial residues
Dugu Systems
Energy & Power
Zero-carbon power with an emissions-free gas turbine
FAST Metals
Manufacturing & Processing
Hydrometallurgical-recovery process for extracting rare-earth elements from industrial tailings
New Mantle Technologies
Energy & Power
Subsurface characterization with physics and AI
Cellen
Transportation & Logistics
Hydrogen-powered drones, combining UAV technology with hydrogen refueling solutions
Aluminum Technologies
Manufacturing & Processing
Low-GHG primary aluminum production with Carbo-Chloride Reduction
Anning Corporation
Energy & Power
Targeting iron-rich rocks to produce hydrogen
NONA Technologies
Food, Water, & Land
Desalinating brackish water with 60% less electricity, fewer chemical inputs, and less downtime
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.