Helping climatetech startupsTransformindustry faster

Allium Engineering
Manufacturing & Processing
Allium Engineering — is a US-based startup founded by two MIT Ph.D graduates that designs and manufactures coated rebar technology that will create a more resilient, affordable, and sustainable infrastructure.

Sense Labs, Inc.
Infrastructure & Construction
The Sense Home Energy monitor tells you what devices in your home are on, and how much energy each is consuming.

Armada AI

Inspiralia
Inspiralia — is a New Product Development Service Company which helps their clients raise non-dilutive funding, improve their R&D processes and take over & execute entire R&D activities in their own labs.

Synergetic LLC
Energy & Power
Synergetic — facilitates infrastructure solutions that unlock and unleash the power of renewables and eliminate or minimize obstacles to rapid renewable energy development and use in congested electricity markets.

Boronite
Manufacturing & Processing

MCatalysis
Manufacturing & Processing
Converting waste carbon into low-cost clean fuels with advanced microwave and catalyst technology

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.

De-Ice
Transportation & Logistics
Electric de-icing technology designed to help the aerospace industry eliminate all chemicals

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.

Starfire Energy
Energy & Power

Syzygy Plasmonics
Manufacturing & Processing
Syzygy Plasmonics — is a technology company developing a new type of photocatalytic chemical reactor to revolutionize the industrial gas, chemical, and energy industries.

Understory
Infrastructure & Construction
Weather hardware and analytics

Capture6
Manufacturing & Processing
Capture6 — removes carbon from the atmosphere while producing clean water and other industrial products from seawater or other saltwater inputs.

Skylark Wireless
Manufacturing & Processing
Far more than 5G: Skylark builds affordable, long-range, and high-speed wireless systems for rural broadband providers.

MITO Material Solutions
Manufacturing & Processing

Moonshot Compost
Manufacturing & Processing
Moonshot Compost — collects and consolidates food waste for composting from businesses and residents, with a focus on data creation and management.

PurposeEnergy
Food, Water, & Land

Hyperframe
Infrastructure & Construction

Lasso Labs
Food, Water, & Land
Using natural proteins to create real texture in alternative foods

Allium Engineering
Manufacturing & Processing
Allium Engineering — is a US-based startup founded by two MIT Ph.D graduates that designs and manufactures coated rebar technology that will create a more resilient, affordable, and sustainable infrastructure.

Sense Labs, Inc.
Infrastructure & Construction
The Sense Home Energy monitor tells you what devices in your home are on, and how much energy each is consuming.

Armada AI

Inspiralia
Inspiralia — is a New Product Development Service Company which helps their clients raise non-dilutive funding, improve their R&D processes and take over & execute entire R&D activities in their own labs.

Synergetic LLC
Energy & Power
Synergetic — facilitates infrastructure solutions that unlock and unleash the power of renewables and eliminate or minimize obstacles to rapid renewable energy development and use in congested electricity markets.

Boronite
Manufacturing & Processing

MCatalysis
Manufacturing & Processing
Converting waste carbon into low-cost clean fuels with advanced microwave and catalyst technology

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.

De-Ice
Transportation & Logistics
Electric de-icing technology designed to help the aerospace industry eliminate all chemicals

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.

Starfire Energy
Energy & Power

Syzygy Plasmonics
Manufacturing & Processing
Syzygy Plasmonics — is a technology company developing a new type of photocatalytic chemical reactor to revolutionize the industrial gas, chemical, and energy industries.

Understory
Infrastructure & Construction
Weather hardware and analytics

Capture6
Manufacturing & Processing
Capture6 — removes carbon from the atmosphere while producing clean water and other industrial products from seawater or other saltwater inputs.

Skylark Wireless
Manufacturing & Processing
Far more than 5G: Skylark builds affordable, long-range, and high-speed wireless systems for rural broadband providers.

MITO Material Solutions
Manufacturing & Processing

Moonshot Compost
Manufacturing & Processing
Moonshot Compost — collects and consolidates food waste for composting from businesses and residents, with a focus on data creation and management.

PurposeEnergy
Food, Water, & Land

Hyperframe
Infrastructure & Construction

Lasso Labs
Food, Water, & Land
Using natural proteins to create real texture in alternative foods

Fleet Robotics
Transportation & Logistics
Robotics to clean biofouling from ship hulls, improving fuel consumption for large ships

Cellen
Transportation & Logistics
Hydrogen-powered drones, combining UAV technology with hydrogen refueling solutions

Quantum Diamond Technologies
Manufacturing & Processing

Ebb Carbon
Food, Water, & Land
Ebb Carbon — removes atmospheric CO2 and reduces ocean acidification. Using a proprietary electrochemical system to separate acid out of salty water, Ebb de-acidifies the ocean and enhances its natural ability to capture CO2 from the air and store it safely and stably as bicarbonate for at least 10,000 years.

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.

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.

Medley Thermal
Energy & Power
Medley Thermal — links clean, cheap power to steam heating systems, lowering a customer's energy costs and carbon emissions.

RISE Robotics
Manufacturing & Processing

Titan Advanced Energy Solutions
Energy & Power
Advanced battery management systems for lithium-ion batteries

frakktal
Manufacturing & Processing
Biobased polymer process to upend PVC overuse

Cala Systems
Energy & Power
Intelligent heat-pump water heaters

Catalyxx
Manufacturing & Processing
Catalytic tech to turn bio-ethanol into high-value, carbon-negative 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.

HEXAspec
Energy & Power
Thermal management solutions for semiconductor chips, enabling more powerful hardware

Hera Materials
Manufacturing & Processing
Regenerative plastics made from diverse, local biomass, powered by robotics and AI

QuantAQ
Infrastructure & Construction
Air quality-monitoring networks that combine IoT hardware, machine learning, and user-friendly software design

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.

Altaeros
Energy & Power

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.

Radical Plastics
Manufacturing & Processing
Radical Plastics — is commercializing a patented technology for producing economical, biodegradable plastics that are a drop-in replacement for conventional, persistent plastics.

Fleet Robotics
Transportation & Logistics
Robotics to clean biofouling from ship hulls, improving fuel consumption for large ships

Cellen
Transportation & Logistics
Hydrogen-powered drones, combining UAV technology with hydrogen refueling solutions

Quantum Diamond Technologies
Manufacturing & Processing

Ebb Carbon
Food, Water, & Land
Ebb Carbon — removes atmospheric CO2 and reduces ocean acidification. Using a proprietary electrochemical system to separate acid out of salty water, Ebb de-acidifies the ocean and enhances its natural ability to capture CO2 from the air and store it safely and stably as bicarbonate for at least 10,000 years.

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.

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.

Medley Thermal
Energy & Power
Medley Thermal — links clean, cheap power to steam heating systems, lowering a customer's energy costs and carbon emissions.

RISE Robotics
Manufacturing & Processing

Titan Advanced Energy Solutions
Energy & Power
Advanced battery management systems for lithium-ion batteries

frakktal
Manufacturing & Processing
Biobased polymer process to upend PVC overuse

Cala Systems
Energy & Power
Intelligent heat-pump water heaters

Catalyxx
Manufacturing & Processing
Catalytic tech to turn bio-ethanol into high-value, carbon-negative 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.

HEXAspec
Energy & Power
Thermal management solutions for semiconductor chips, enabling more powerful hardware

Hera Materials
Manufacturing & Processing
Regenerative plastics made from diverse, local biomass, powered by robotics and AI

QuantAQ
Infrastructure & Construction
Air quality-monitoring networks that combine IoT hardware, machine learning, and user-friendly software design

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.

Altaeros
Energy & Power

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.

Radical Plastics
Manufacturing & Processing
Radical Plastics — is commercializing a patented technology for producing economical, biodegradable plastics that are a drop-in replacement for conventional, persistent plastics.




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.


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