Helping climatetech startupsTransformindustry faster
Innovator Energy
Energy & Power
Developing and deploying solutions in cooling, heating, and heat transfer
Carbonext
Manufacturing & Processing
3D-graphene technology that develops integrated solutions with carbon-coated silicon anodes
Provocative
Manufacturing & Processing
Replacing data centers’ cooling systems with carbon capture
Arbor Energy Holdings Inc
Energy & Power
Digital-energy platform to help homeowners live more sustainably
Diffraqtion
Manufacturing & Processing
Machine Vision at the Quantum Limit
DIOXYCLE
Manufacturing & Processing
DIOXYCLE — is building an electrolysis platform to convert carbon emissions into chemicals and fuel building blocks.
Biosfera
Manufacturing & Processing
PlaSene
Manufacturing & Processing
Converting plastic waste into liquid fuel and low-carbon hydrogen
Apitronics
Food, Water, & Land
Spec Sensors LLC
Energy & Power
Ardent Process Technologies
Energy & Power
Janta Power
Energy & Power
The world’s first 3D solar tower technology
IncentiFind
Infrastructure & Construction
Emrod
Energy & Power
Sustainable power with long-range wireless power transfer technology
Onboard Data
Infrastructure & Construction
Onboard — offers software analytics for HVAC service providers.
CemCycle
Manufacturing & Processing
Capro-X
Food, Water, & Land
Sustainable biochemicals made from food waste at food production plants, creating alternatives to palm-oil chemicals
7Analytics
Infrastructure & Construction
7Analytics is a climate-tech startup developing superior high-precision predictive models for floods, enhancing urban resilience to climate change. Our mission is to empower asset owners, insurance companies and governance with the tools needed to mitigate the impacts of extreme weather events.
Blue Line Battery
Energy & Power
Blue Line Battery designs and manufactures more accessible, more efficient, battery technology for industrial applications.
Encore CO2
Manufacturing & Processing
Converting captured CO₂ into valuable industrial molecules
Innovator Energy
Energy & Power
Developing and deploying solutions in cooling, heating, and heat transfer
Carbonext
Manufacturing & Processing
3D-graphene technology that develops integrated solutions with carbon-coated silicon anodes
Provocative
Manufacturing & Processing
Replacing data centers’ cooling systems with carbon capture
Arbor Energy Holdings Inc
Energy & Power
Digital-energy platform to help homeowners live more sustainably
Diffraqtion
Manufacturing & Processing
Machine Vision at the Quantum Limit
DIOXYCLE
Manufacturing & Processing
DIOXYCLE — is building an electrolysis platform to convert carbon emissions into chemicals and fuel building blocks.
Biosfera
Manufacturing & Processing
PlaSene
Manufacturing & Processing
Converting plastic waste into liquid fuel and low-carbon hydrogen
Apitronics
Food, Water, & Land
Spec Sensors LLC
Energy & Power
Ardent Process Technologies
Energy & Power
Janta Power
Energy & Power
The world’s first 3D solar tower technology
IncentiFind
Infrastructure & Construction
Emrod
Energy & Power
Sustainable power with long-range wireless power transfer technology
Onboard Data
Infrastructure & Construction
Onboard — offers software analytics for HVAC service providers.
CemCycle
Manufacturing & Processing
Capro-X
Food, Water, & Land
Sustainable biochemicals made from food waste at food production plants, creating alternatives to palm-oil chemicals
7Analytics
Infrastructure & Construction
7Analytics is a climate-tech startup developing superior high-precision predictive models for floods, enhancing urban resilience to climate change. Our mission is to empower asset owners, insurance companies and governance with the tools needed to mitigate the impacts of extreme weather events.
Blue Line Battery
Energy & Power
Blue Line Battery designs and manufactures more accessible, more efficient, battery technology for industrial applications.
Encore CO2
Manufacturing & Processing
Converting captured CO₂ into valuable industrial molecules
Infinite Cooling
Infrastructure & Construction
Infinite Cooling — reduces water consumption in industrial plants by capturing cooling tower plumes. The company has a patent-pending technology developed at MIT that uses electric fields to capture water from the plumes leaving cooling towers.
Agira
Energy & Power
Agira Photonics — designs optical films for superior light management. Applications requiring highly collimated light with minimal chromatic aberration, such as LED lighting and displays, can be made more efficient with Agira’s film technology.
Planckton Data
Manufacturing & Processing
Planckton Data — is making a platform that is built to manage the entire carbon data lifecycle by automating data collection and conversion and producing insights quickly without the need to make extensive changes to existing systems
FLITE Material Sciences
Manufacturing & Processing
Starfield
Food, Water, & Land
Gaia AI
Food, Water, & Land
Collecting high-quality biomass data in forests with drones, LiDAR, and computer vision
Lasso Labs
Food, Water, & Land
Using natural proteins to create real texture in alternative foods
Vertical Semiconductor
Energy & Power
Power supply units designed to unleash the full potential of AI & HPC
Form Energy
Energy & Power
Cost-effective, multi-day energy-storage solutions
PurposeEnergy
Food, Water, & Land
OpConnect
Transportation & Logistics
OpConnect — is an EV charger company that provides charging station hardware, software, and operating services. Their cloud-based software platform provides energy management, payment processing, scheduling and maintenance tickets, and support services for users.
CeraPhi Energy
Energy & Power
CeraPhi Energy — is a geothermal energy company developing a “plug and play” scalable technology platform.
Next Rung Technology
Manufacturing & Processing
Supporting clean technologies in their commercialization journeys with expert engineering consulting
Monadnock Energy
Energy & Power
American Battery Technology Company
Energy & Power
Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company
Focis AI
FocisAI uses AI and 3D scan data to automatically identify and map infrastructure in industrial facilities, turning complex environments into actionable digital intelligence. Our platform enables faster inspections, improved safety, and more efficient operations across heavy industry.
Mass Magnetics
Manufacturing & Processing
MECo specializes in the automated manufacture of structured functional materials for magnetic and electrochemical applications.
PolyJoule
Energy & Power
PolyJoule — develops low-cost, high-power energy storage designed to strengthen the power grid.
Topl
Infrastructure & Construction
Topl is an impact technology company building a blockchain that empowers businesses to prove and monetize ethical and sustainable practices.
HKG Energy
Energy & Power
Silicon materials that increase battery energy density
Infinite Cooling
Infrastructure & Construction
Infinite Cooling — reduces water consumption in industrial plants by capturing cooling tower plumes. The company has a patent-pending technology developed at MIT that uses electric fields to capture water from the plumes leaving cooling towers.
Agira
Energy & Power
Agira Photonics — designs optical films for superior light management. Applications requiring highly collimated light with minimal chromatic aberration, such as LED lighting and displays, can be made more efficient with Agira’s film technology.
Planckton Data
Manufacturing & Processing
Planckton Data — is making a platform that is built to manage the entire carbon data lifecycle by automating data collection and conversion and producing insights quickly without the need to make extensive changes to existing systems
FLITE Material Sciences
Manufacturing & Processing
Starfield
Food, Water, & Land
Gaia AI
Food, Water, & Land
Collecting high-quality biomass data in forests with drones, LiDAR, and computer vision
Lasso Labs
Food, Water, & Land
Using natural proteins to create real texture in alternative foods
Vertical Semiconductor
Energy & Power
Power supply units designed to unleash the full potential of AI & HPC
Form Energy
Energy & Power
Cost-effective, multi-day energy-storage solutions
PurposeEnergy
Food, Water, & Land
OpConnect
Transportation & Logistics
OpConnect — is an EV charger company that provides charging station hardware, software, and operating services. Their cloud-based software platform provides energy management, payment processing, scheduling and maintenance tickets, and support services for users.
CeraPhi Energy
Energy & Power
CeraPhi Energy — is a geothermal energy company developing a “plug and play” scalable technology platform.
Next Rung Technology
Manufacturing & Processing
Supporting clean technologies in their commercialization journeys with expert engineering consulting
Monadnock Energy
Energy & Power
American Battery Technology Company
Energy & Power
Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company
Focis AI
FocisAI uses AI and 3D scan data to automatically identify and map infrastructure in industrial facilities, turning complex environments into actionable digital intelligence. Our platform enables faster inspections, improved safety, and more efficient operations across heavy industry.
Mass Magnetics
Manufacturing & Processing
MECo specializes in the automated manufacture of structured functional materials for magnetic and electrochemical applications.
PolyJoule
Energy & Power
PolyJoule — develops low-cost, high-power energy storage designed to strengthen the power grid.
Topl
Infrastructure & Construction
Topl is an impact technology company building a blockchain that empowers businesses to prove and monetize ethical and sustainable practices.
HKG Energy
Energy & Power
Silicon materials that increase battery energy density
The way the world makes energy, materials, and food is changing — and the next decade will decide whether that change makes life better: more energy with fewer emissions, more industry with cleaner air, more good jobs.
That future comes from entrepreneurs — the heroes who turn ideas into real products, real companies, and the jobs of the future. And the ones who make it are the ones with a community behind them.
For 15 years, Greentown has been that community — leaning in with the space, the people, the funding, and the first customers they need. Get behind the entrepreneurs building our future.
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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.
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