Helping climatetech startupsTransformindustry faster
JURA Bio
Food, Water, & Land
Criaterra
Clarity Castle
Infrastructure & Construction
Modular, soundproof work pods made from recycled materials
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.
Visolis
Infrastructure & Construction
CarTwin
Transportation & Logistics
CarTwin is unlocking the value of automative data by creating an integrated data ecosystem to drive actionable insight and predictive analytics to address the industry’s most pressing challenges. Its digital twin technology enables a diverse set of automotive use cases that power new innovations by connecting physical and digital worlds providing real-time operational awareness of vehicle, component, and manufacturing performance.
Clean Crop Technologies
Food, Water, & Land
Improving food safety and reducing food waste by removing contaminants with food-grade gasses and electricity
Biobot Analytics
Food, Water, & Land
QD Solar
Energy & Power
Regenerative Resources
Food, Water, & Land
Regenerative Resources — is an ecosystems services company that acquires highly-degraded land and transforms it in order to reuse it for aquaculture.
Celadyne
Energy & Power
Altaeros
Energy & Power
Euphree
Transportation & Logistics
Electric bikes made fashionable.
Rushnu
Manufacturing & Processing
Turns waste into carbon-neutral chemistry
Decimetrix
Energy & Power
AI platform to help clients measure their carbon footprint
Patch
Transportation & Logistics
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.
Stash Energy
Energy & Power
Stash Energy makes home heating and cooling affordable and sustainable with the first smart heat pump with built-in thermal energy storage.
Loop CO2
Manufacturing & Processing
Transforming CO₂ into sustainable polymers to create fully recyclable materials
RailState
Transportation & Logistics
RailState — answers an increasing demand among freight customers, commodity traders, financial analysts, and government agencies for more current and granular visibility on railway volumes, performance, and condition.
JURA Bio
Food, Water, & Land
Criaterra
Clarity Castle
Infrastructure & Construction
Modular, soundproof work pods made from recycled materials
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.
Visolis
Infrastructure & Construction
CarTwin
Transportation & Logistics
CarTwin is unlocking the value of automative data by creating an integrated data ecosystem to drive actionable insight and predictive analytics to address the industry’s most pressing challenges. Its digital twin technology enables a diverse set of automotive use cases that power new innovations by connecting physical and digital worlds providing real-time operational awareness of vehicle, component, and manufacturing performance.
Clean Crop Technologies
Food, Water, & Land
Improving food safety and reducing food waste by removing contaminants with food-grade gasses and electricity
Biobot Analytics
Food, Water, & Land
QD Solar
Energy & Power
Regenerative Resources
Food, Water, & Land
Regenerative Resources — is an ecosystems services company that acquires highly-degraded land and transforms it in order to reuse it for aquaculture.
Celadyne
Energy & Power
Altaeros
Energy & Power
Euphree
Transportation & Logistics
Electric bikes made fashionable.
Rushnu
Manufacturing & Processing
Turns waste into carbon-neutral chemistry
Decimetrix
Energy & Power
AI platform to help clients measure their carbon footprint
Patch
Transportation & Logistics
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.
Stash Energy
Energy & Power
Stash Energy makes home heating and cooling affordable and sustainable with the first smart heat pump with built-in thermal energy storage.
Loop CO2
Manufacturing & Processing
Transforming CO₂ into sustainable polymers to create fully recyclable materials
RailState
Transportation & Logistics
RailState — answers an increasing demand among freight customers, commodity traders, financial analysts, and government agencies for more current and granular visibility on railway volumes, performance, and condition.
Dsider
Energy & Power
SaaS platform to accelerate the expansion of energy-transition projects
Accion Systems
Transportation & Logistics
Accion Systems — develops in-space propulsion technologies that optimize scalability, performance, and efficiency to accelerate the exploration of space. Accion’s flagship product, TILE, uses proprietary electrospray thrusters, bringing electric propulsion to satellites of all sizes and redefining in-space capabilities for the 21st century.
SkyH2O
Food, Water, & Land
Atmospheric water generation for commercial and government projects
enaDyne
Manufacturing & Processing
enaDyne — develops non-thermal plasma catalysis reactors to convert CO2 into chemicals and fuels.
CZAR Power
Energy & Power
Ocean Visuals
Food, Water, & Land
Patented hyper-spectral LiDAR for real-time detection of oil and organics
Cellsense
Manufacturing & Processing
MoveEV
Transportation & Logistics
Mitigating Scope 1 & 3 emissions for businesses while providing cost savings for employees
Ardent Process Technologies
Energy & Power
VentureWell
Carbonext
Manufacturing & Processing
3D-graphene technology that develops integrated solutions with carbon-coated silicon anodes
GreenLabs Recycling
Manufacturing & Processing
Sistine Solar
Energy & Power
Sistine Solar — creates SolarSkin, an aesthetic overlay that transforms the look of any solar panel. It can make the panel blend in with a homeowner’s roof—no matter what color, pattern, or style.
Manatee Energy
Infrastructure & Construction
Rigorous and automated system design for affordable home heat pumps
Armeta
Armeta AI is the structured data layer for industrial facilities, turning legacy P&IDs into Material Take-Offs and EPA/OSHA regulatory inventories that power brownfield retrofits, LDAR programs, and energy transition projects across the installed base.
NeuroBionics
Manufacturing & Processing
Sustainability-focused device for minimally-invasive endovascular deep-brain stimulation for stroke rehabilitation
Carbon Negative Solutions
Infrastructure & Construction
Realizse
Energy & Power
Tokenization and product verification for circularity, energy, and the real estate markets
Thiozen
Manufacturing & Processing
Chemical waste-to-hydrogen cycle that removes hydrogen sulfide from gas streams and generates zero-emission hydrogen
SRGE
Infrastructure & Construction
Full-service accelerator to support small and underrepresented-led construction firms
Dsider
Energy & Power
SaaS platform to accelerate the expansion of energy-transition projects
Accion Systems
Transportation & Logistics
Accion Systems — develops in-space propulsion technologies that optimize scalability, performance, and efficiency to accelerate the exploration of space. Accion’s flagship product, TILE, uses proprietary electrospray thrusters, bringing electric propulsion to satellites of all sizes and redefining in-space capabilities for the 21st century.
SkyH2O
Food, Water, & Land
Atmospheric water generation for commercial and government projects
enaDyne
Manufacturing & Processing
enaDyne — develops non-thermal plasma catalysis reactors to convert CO2 into chemicals and fuels.
CZAR Power
Energy & Power
Ocean Visuals
Food, Water, & Land
Patented hyper-spectral LiDAR for real-time detection of oil and organics
Cellsense
Manufacturing & Processing
MoveEV
Transportation & Logistics
Mitigating Scope 1 & 3 emissions for businesses while providing cost savings for employees
Ardent Process Technologies
Energy & Power
VentureWell
Carbonext
Manufacturing & Processing
3D-graphene technology that develops integrated solutions with carbon-coated silicon anodes
GreenLabs Recycling
Manufacturing & Processing
Sistine Solar
Energy & Power
Sistine Solar — creates SolarSkin, an aesthetic overlay that transforms the look of any solar panel. It can make the panel blend in with a homeowner’s roof—no matter what color, pattern, or style.
Manatee Energy
Infrastructure & Construction
Rigorous and automated system design for affordable home heat pumps
Armeta
Armeta AI is the structured data layer for industrial facilities, turning legacy P&IDs into Material Take-Offs and EPA/OSHA regulatory inventories that power brownfield retrofits, LDAR programs, and energy transition projects across the installed base.
NeuroBionics
Manufacturing & Processing
Sustainability-focused device for minimally-invasive endovascular deep-brain stimulation for stroke rehabilitation
Carbon Negative Solutions
Infrastructure & Construction
Realizse
Energy & Power
Tokenization and product verification for circularity, energy, and the real estate markets
Thiozen
Manufacturing & Processing
Chemical waste-to-hydrogen cycle that removes hydrogen sulfide from gas streams and generates zero-emission hydrogen
SRGE
Infrastructure & Construction
Full-service accelerator to support small and underrepresented-led construction firms
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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