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
Innovator Energy
Energy & Power
Developing and deploying solutions in cooling, heating, and heat transfer
SBD Technologies
Transportation & Logistics
Fully automated, scalable EV home charging and energy optimization solutions for sustainable fleet management
Terralytiq
Manufacturing & Processing
Digital models that deliver Scope 3 hotspots, actionable initiatives, and supplier engagement to cut cost and carbon
AmHyTech
Energy & Power
Ammonia infrastructure layer, enabling safe and practical liquid ammonia handling at ambient conditions
SkyH2O
Food, Water, & Land
Atmospheric water generation for commercial and government projects
Conduit Tech
Infrastructure & Construction
Supporting HVAC contractors through design, sales, and installation
Simlionics
Energy & Power
Physics-aware, advanced AI battery modeling and intelligence for EV and energy-storage systems
Licube
Manufacturing & Processing
Sustainable lithium recovery through electrodialysis
Ivys Energy Solutions
Energy & Power
On-site hydrogen-generation and -dispensing appliance that uses water and electricity to make fuel-cell-grade hydrogen
Browning the Green Space
Food, Water, & Land
Addressing diversity, equity, and inclusion across careers, companies, contracts, capital, and communities
Infinite Foundry
Manufacturing & Processing
Real-time 3D operational models to improve efficiency, lower costs, and enhance sustainability
3D Architech, Inc.
Manufacturing & Processing
Ultra-fine and gel-based metal manufacturing, creating high-efficiency microstructures for cooling and clean energy
XTPL
Manufacturing & Processing
Additive manufacturing technology for ultra-precise printing of nanomaterials
NewGenium
Energy & Power
Advanced brine-to-battery grade LFP technology
Priority Investor Loans
Infrastructure & Construction
Simplified loan programs to fund real estate investors nationwide with income-producing properties
MCatalysis
Manufacturing & Processing
Converting waste carbon into low-cost clean fuels with advanced microwave and catalyst technology
Thiozen
Manufacturing & Processing
Chemical waste-to-hydrogen cycle that removes hydrogen sulfide from gas streams and generates zero-emission hydrogen
Dottir Labs
Food, Water, & Land
Sensor technology that provides real-time, detailed chemical analysis of water
REON Technology
Energy & Power
AI-driven optimization of systems through tailored power management of batteries and PV panels for energy storage
Torres Orbital Mining Inc (TOM)
Infrastructure & Construction
Autonomous lunar excavation systems for dust-free regolith mining and space operations
Innovator Energy
Energy & Power
Developing and deploying solutions in cooling, heating, and heat transfer
SBD Technologies
Transportation & Logistics
Fully automated, scalable EV home charging and energy optimization solutions for sustainable fleet management
Terralytiq
Manufacturing & Processing
Digital models that deliver Scope 3 hotspots, actionable initiatives, and supplier engagement to cut cost and carbon
AmHyTech
Energy & Power
Ammonia infrastructure layer, enabling safe and practical liquid ammonia handling at ambient conditions
SkyH2O
Food, Water, & Land
Atmospheric water generation for commercial and government projects
Conduit Tech
Infrastructure & Construction
Supporting HVAC contractors through design, sales, and installation
Simlionics
Energy & Power
Physics-aware, advanced AI battery modeling and intelligence for EV and energy-storage systems
Licube
Manufacturing & Processing
Sustainable lithium recovery through electrodialysis
Ivys Energy Solutions
Energy & Power
On-site hydrogen-generation and -dispensing appliance that uses water and electricity to make fuel-cell-grade hydrogen
Browning the Green Space
Food, Water, & Land
Addressing diversity, equity, and inclusion across careers, companies, contracts, capital, and communities
Infinite Foundry
Manufacturing & Processing
Real-time 3D operational models to improve efficiency, lower costs, and enhance sustainability
3D Architech, Inc.
Manufacturing & Processing
Ultra-fine and gel-based metal manufacturing, creating high-efficiency microstructures for cooling and clean energy
XTPL
Manufacturing & Processing
Additive manufacturing technology for ultra-precise printing of nanomaterials
NewGenium
Energy & Power
Advanced brine-to-battery grade LFP technology
Priority Investor Loans
Infrastructure & Construction
Simplified loan programs to fund real estate investors nationwide with income-producing properties
MCatalysis
Manufacturing & Processing
Converting waste carbon into low-cost clean fuels with advanced microwave and catalyst technology
Thiozen
Manufacturing & Processing
Chemical waste-to-hydrogen cycle that removes hydrogen sulfide from gas streams and generates zero-emission hydrogen
Dottir Labs
Food, Water, & Land
Sensor technology that provides real-time, detailed chemical analysis of water
REON Technology
Energy & Power
AI-driven optimization of systems through tailored power management of batteries and PV panels for energy storage
Torres Orbital Mining Inc (TOM)
Infrastructure & Construction
Autonomous lunar excavation systems for dust-free regolith mining and space operations
Respire Energy
Energy & Power
Safe, low-cost, and long-duration metal-air battery designed for microgrids
Daniel Consulting Group, LLC
Energy & Power
Helping researchers improve battery and cell testing and providing due diligence for potential investors
Capital Energy
Energy & Power
Helping climatetech companies translate complex work into compelling brands
Powerhouse Ventures
Infrastructure & Construction
Investing in software to advance clean energy, mobility, and industry
ETAK
ETAK transforms waste into clean energy. Our modular technology converts unsorted municipal and industrial waste into high-calorific gas, offering a decentralized, 24/7 alternative to fossil fuels and traditional incineration.
Boxes
Manufacturing & Processing
Smart, affordable, and sustainable retail combining the physical and digital worlds
AMPeers
Energy & Power
Advanced MOCVD resulting in high-temp superconductors with higher performance, faster output, and lower cost
Alma Energy
Energy & Power
Geothermal exploration to deliver scaled renewable energy production at economic levels
Boot Box Labs
Energy & Power
Compact, refrigerant-free thermoelectric heat pump for quiet, efficient, climate-neutral HVAC
DrinKicks
Food, Water, & Land
Repurposing food waste and recycled materials into shoes
PlaSene
Manufacturing & Processing
Converting plastic waste into liquid fuel and low-carbon hydrogen
Tato Labs
Manufacturing & Processing
Bioplastic products and packaging solutions made from potato starch
Coflux Purification, Inc
Food, Water, & Land
A modular, on-site water treatment system eliminating persistent contaminants from water and industrial waste streams
SUPERGirls Shine Foundation
Energy & Power
Developing underserved girls in STEM to support equity in the emerging workforce
Reframe Systems
Infrastructure & Construction
Offsite construction of zero-carbon buildings with volumetric modules manufactured with robotic microfactories
Steven Winter Associates, Inc.
Infrastructure & Construction
Research, consulting, and advisory services to improve commercial, residential, and multifamily built environments
Kanin Energy
Energy & Power
Monetizing industrial waste heat with reduced deployment risk via third-party financing
Studio 3e8
Manufacturing & Processing
Lightspeed metal 3D printing, making professional-grade fabrication affordable, compact, and easy to use
InnoEnergy (Member Account)
Energy & Power
Industrializing cleantech innovation to enable and grow a global net-zero economy
Onboard Data
Infrastructure & Construction
Onboard — offers software analytics for HVAC service providers.
Respire Energy
Energy & Power
Safe, low-cost, and long-duration metal-air battery designed for microgrids
Daniel Consulting Group, LLC
Energy & Power
Helping researchers improve battery and cell testing and providing due diligence for potential investors
Capital Energy
Energy & Power
Helping climatetech companies translate complex work into compelling brands
Powerhouse Ventures
Infrastructure & Construction
Investing in software to advance clean energy, mobility, and industry
ETAK
ETAK transforms waste into clean energy. Our modular technology converts unsorted municipal and industrial waste into high-calorific gas, offering a decentralized, 24/7 alternative to fossil fuels and traditional incineration.
Boxes
Manufacturing & Processing
Smart, affordable, and sustainable retail combining the physical and digital worlds
AMPeers
Energy & Power
Advanced MOCVD resulting in high-temp superconductors with higher performance, faster output, and lower cost
Alma Energy
Energy & Power
Geothermal exploration to deliver scaled renewable energy production at economic levels
Boot Box Labs
Energy & Power
Compact, refrigerant-free thermoelectric heat pump for quiet, efficient, climate-neutral HVAC
DrinKicks
Food, Water, & Land
Repurposing food waste and recycled materials into shoes
PlaSene
Manufacturing & Processing
Converting plastic waste into liquid fuel and low-carbon hydrogen
Tato Labs
Manufacturing & Processing
Bioplastic products and packaging solutions made from potato starch
Coflux Purification, Inc
Food, Water, & Land
A modular, on-site water treatment system eliminating persistent contaminants from water and industrial waste streams
SUPERGirls Shine Foundation
Energy & Power
Developing underserved girls in STEM to support equity in the emerging workforce
Reframe Systems
Infrastructure & Construction
Offsite construction of zero-carbon buildings with volumetric modules manufactured with robotic microfactories
Steven Winter Associates, Inc.
Infrastructure & Construction
Research, consulting, and advisory services to improve commercial, residential, and multifamily built environments
Kanin Energy
Energy & Power
Monetizing industrial waste heat with reduced deployment risk via third-party financing
Studio 3e8
Manufacturing & Processing
Lightspeed metal 3D printing, making professional-grade fabrication affordable, compact, and easy to use
InnoEnergy (Member Account)
Energy & Power
Industrializing cleantech innovation to enable and grow a global net-zero economy
Onboard Data
Infrastructure & Construction
Onboard — offers software analytics for HVAC service providers.
Our Startups Have Raised Over $0B
All-time
0
Currently home to
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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.