Helping climatetech startupsTransformindustry faster
MicroEra Power
Energy & Power
MicroEra Power — develops and manufactures THERMAplus, a hardware + software solution for smart Thermal Energy Storage for buildings.
Dexai Robotics
Food, Water, & Land
Root AI
Food, Water, & Land
Interface Polymers
Manufacturing & Processing
R3 Energy
Energy & Power
Aja Labs
Manufacturing & Processing
Carbfix
Manufacturing & Processing
INpower
INpower — is a specialty insurance brokerage & risk management firm that knows that business innovation generates risk. Their risk management mission is simple: to provide their clients with deep insurance expertise, thoughtful enterprise risk management counsel, and fierce claims advocacy supported by offices in: Houston, Boston and Irvine, California.
Global Algae Innovations
Transportation & Logistics
Global Algae Innovations — grows algae that capture CO2 from the atmosphere to produce protein and oil for food and industrial use.
Wastewizer Technologies
Transportation & Logistics
Wastewizer Technologies — builds internet-connected rugged scales that continuously monitor the weight of containers through their BinBar™ system; with this technology, they empower the waste industry by providing actionable insights for improving sustainability, economic efficiency, and customer satisfaction.
Kornit Digital
Manufacturing & Processing
Kornit Digital (formerly Voxel8) — is developing digital manufacturing systems that revolutionize how footwear and athletic apparel are designed, manufactured, and delivered to consumers.
Global ROC
Food, Water, & Land
Global ROC — provides an innovative technology solution for cooling tower systems that reduces chemical consumption, saves water, and decreases energy costs.
sweetgreen
Food, Water, & Land
Patch
Transportation & Logistics
Piaggio Fast Forward
Transportation & Logistics
Mission Zero Technologies
Manufacturing & Processing
Efficient electrochemistry to capture CO₂
Axis Sky Renewables
Energy & Power
-- creates innovative wind solutions, specializing in vertical axis wind turbines. Its cutting-edge technology is less expensive than traditional wind turbines to produce, deploy and maintain while still producing reliable renewable energy.
Energiency
Manufacturing & Processing
Altaeros
Energy & Power
Soliyarn
Manufacturing & Processing
Soliyarn — employs a unique (dry) process to vapor coat polymers on textiles, which leads to washable electronic clothing without wires or bulk.
MicroEra Power
Energy & Power
MicroEra Power — develops and manufactures THERMAplus, a hardware + software solution for smart Thermal Energy Storage for buildings.
Dexai Robotics
Food, Water, & Land
Root AI
Food, Water, & Land
Interface Polymers
Manufacturing & Processing
R3 Energy
Energy & Power
Aja Labs
Manufacturing & Processing
Carbfix
Manufacturing & Processing
INpower
INpower — is a specialty insurance brokerage & risk management firm that knows that business innovation generates risk. Their risk management mission is simple: to provide their clients with deep insurance expertise, thoughtful enterprise risk management counsel, and fierce claims advocacy supported by offices in: Houston, Boston and Irvine, California.
Global Algae Innovations
Transportation & Logistics
Global Algae Innovations — grows algae that capture CO2 from the atmosphere to produce protein and oil for food and industrial use.
Wastewizer Technologies
Transportation & Logistics
Wastewizer Technologies — builds internet-connected rugged scales that continuously monitor the weight of containers through their BinBar™ system; with this technology, they empower the waste industry by providing actionable insights for improving sustainability, economic efficiency, and customer satisfaction.
Kornit Digital
Manufacturing & Processing
Kornit Digital (formerly Voxel8) — is developing digital manufacturing systems that revolutionize how footwear and athletic apparel are designed, manufactured, and delivered to consumers.
Global ROC
Food, Water, & Land
Global ROC — provides an innovative technology solution for cooling tower systems that reduces chemical consumption, saves water, and decreases energy costs.
sweetgreen
Food, Water, & Land
Patch
Transportation & Logistics
Piaggio Fast Forward
Transportation & Logistics
Mission Zero Technologies
Manufacturing & Processing
Efficient electrochemistry to capture CO₂
Axis Sky Renewables
Energy & Power
-- creates innovative wind solutions, specializing in vertical axis wind turbines. Its cutting-edge technology is less expensive than traditional wind turbines to produce, deploy and maintain while still producing reliable renewable energy.
Energiency
Manufacturing & Processing
Altaeros
Energy & Power
Soliyarn
Manufacturing & Processing
Soliyarn — employs a unique (dry) process to vapor coat polymers on textiles, which leads to washable electronic clothing without wires or bulk.
NBD Nano
Manufacturing & Processing
NBD Nano — utilizes biomimicry to create functional and durable surface coatings that improve water collection, transport, and repellency.
Axiom Optics
Manufacturing & Processing
Axiom Optics — provides optical instrumentation for fundamental sciences (astronomy, physics, biology) and industrial quality control.
Kuva Systems
Manufacturing & Processing
Noir3 Energy
Energy & Power
Noir3 Energy, LLC is partnered with Sonnen, a Shell New Energies company to pave the way for the Texas Energy Transition by deploying the VPP( Virtual Power Plant) concept within the multifamily, commercial & Industrial building spaces with a no money down approach that benefits all parties involved from families to the building owners.
Invested Development
Food, Water, & Land
FutureOn
Energy & Power
FutureOn — FutureOn's FieldTwin creates a dynamic and 3D geospatial common data environment across surface, subsea, and subsurface domains, with open API connectivity into third-party tools and existing customer workflows.
Littoral Power Systems
Energy & Power
LPS sells and maintains innovative, cost-effective, low impact hydropower and ocean power equipment.
Bevi
Food, Water, & Land
EVLO Energy Storage
Energy & Power
Hempitecture
Manufacturing & Processing
Hempitecture (Ketchum, ID) is a manufacturer and distributor of biobased building materials, including their low embodied carbon insulation, HempWool®.
Type One Energy
Energy & Power
Altitude
Altitude (subsidiary of Accenture) — is a privately held product design and innovation firm based in Boston that uses its expertise in consumer insight, design and product engineering to help companies innovate and develop new physical products and services.
Stepwise
Energy & Power
Stepwise — makes home electrification effortless and affordable by reducing the infrastructure upgrades costs associated with installations and helping homeowners save money on their electricity bills through energy management.
Pre Framing Corp
Infrastructure & Construction
Carbontec
Infrastructure & Construction
Full Cycle Bioplastics
Manufacturing & Processing
Lobster Robotics
Food, Water, & Land
Lobster Robotics — develops lightweight, low-cost, fast robots for visual surveying to lower the cost of surveying in offshore wind farms.
Puro Renewables
Manufacturing & Processing
Puro Renewables (Miami Beach, FL) upcycles carbon-negative biowaste for use in reducing the amount of fossil-fuel-based resin and carbon footprint in typical plastic products.
Raise Green
Energy & Power
Raise Green — helps make it easy to start your own solar energy project or climate action company. Anyone can start a project on Raise Green and bring clean energy to their business or community.
Sofar Ocean
Food, Water, & Land
NBD Nano
Manufacturing & Processing
NBD Nano — utilizes biomimicry to create functional and durable surface coatings that improve water collection, transport, and repellency.
Axiom Optics
Manufacturing & Processing
Axiom Optics — provides optical instrumentation for fundamental sciences (astronomy, physics, biology) and industrial quality control.
Kuva Systems
Manufacturing & Processing
Noir3 Energy
Energy & Power
Noir3 Energy, LLC is partnered with Sonnen, a Shell New Energies company to pave the way for the Texas Energy Transition by deploying the VPP( Virtual Power Plant) concept within the multifamily, commercial & Industrial building spaces with a no money down approach that benefits all parties involved from families to the building owners.
Invested Development
Food, Water, & Land
FutureOn
Energy & Power
FutureOn — FutureOn's FieldTwin creates a dynamic and 3D geospatial common data environment across surface, subsea, and subsurface domains, with open API connectivity into third-party tools and existing customer workflows.
Littoral Power Systems
Energy & Power
LPS sells and maintains innovative, cost-effective, low impact hydropower and ocean power equipment.
Bevi
Food, Water, & Land
EVLO Energy Storage
Energy & Power
Hempitecture
Manufacturing & Processing
Hempitecture (Ketchum, ID) is a manufacturer and distributor of biobased building materials, including their low embodied carbon insulation, HempWool®.
Type One Energy
Energy & Power
Altitude
Altitude (subsidiary of Accenture) — is a privately held product design and innovation firm based in Boston that uses its expertise in consumer insight, design and product engineering to help companies innovate and develop new physical products and services.
Stepwise
Energy & Power
Stepwise — makes home electrification effortless and affordable by reducing the infrastructure upgrades costs associated with installations and helping homeowners save money on their electricity bills through energy management.
Pre Framing Corp
Infrastructure & Construction
Carbontec
Infrastructure & Construction
Full Cycle Bioplastics
Manufacturing & Processing
Lobster Robotics
Food, Water, & Land
Lobster Robotics — develops lightweight, low-cost, fast robots for visual surveying to lower the cost of surveying in offshore wind farms.
Puro Renewables
Manufacturing & Processing
Puro Renewables (Miami Beach, FL) upcycles carbon-negative biowaste for use in reducing the amount of fossil-fuel-based resin and carbon footprint in typical plastic products.
Raise Green
Energy & Power
Raise Green — helps make it easy to start your own solar energy project or climate action company. Anyone can start a project on Raise Green and bring clean energy to their business or community.
Sofar Ocean
Food, Water, & Land
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.
Our Startups Have Raised Over $0B
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Startups Operate
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New Jobs Created by Our Members, and Counting
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.
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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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