Helping climatetech startupsTransformindustry faster
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.
Invested Development
Food, Water, & Land
It's Electric
Infrastructure & Construction
it's electric accelerates the adoption of EVs with a scalable and simple Level-2 curbside charging solution, ensuring that every community has access to clean, sustainable transportation options. it's electric's "behind the meter" approach simplifies the installation process by eliminating the need for utility coordination, and is the first in the country to offer EVSE hardware with a detachable cord.
pH Matter
Energy & Power
Dexai Robotics
Food, Water, & Land
Malta
Energy & Power
Electric Fish
Energy & Power
Electric Fish — deploys NanoGrids at gas-stations for extreme-fast EV charging, and grid-scale energy-backup.
REVOLUTION Turbine Technologies
Energy & Power
REVOLUTION Turbine Technologies (RTT) — is the clean energy partner for oil & gas operators ready to leverage smart waste-energy recovery to generate emission-free power for remote operations. RTT is meeting the most demanding power generation challenges of today and tomorrow with a highly experienced team of entrepreneurs, technology developers, and innovators.
Public Grid
Energy & Power
Helix Power
Energy & Power
Helix Power — is a developer of grid scale high power energy storage and power management systems. Their 1MW flywheel is designed for high-power, high-cycle, long-life applications such as metro rail and microgrids.
Night Vision Technology Solutions (NVTS)
Noteworthy AI
Energy & Power
Noteworthy AI — helps electric utilities increase the reliability, resiliency and safety of the distribution grid while reducing cost.
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.
ZwitterCo
Food, Water, & Land
Nanofiltration membranes for wastewater treatment with unprecedented fouling-resistance and size-selectivity.
Littoral Power Systems
Energy & Power
LPS sells and maintains innovative, cost-effective, low impact hydropower and ocean power equipment.
Fysikes Biosolutions
Energy & Power
Fysikes Biosolutions — develops renewable green fuels (methanol, ammonia, and naphtas) via the production of hydrogen and concentrated CO2 from direct air capture and industrial CO2 capture technologies.
Visolis
Infrastructure & Construction
Keystone Tower Systems
Energy & Power
Trace Matters
Manufacturing & Processing
Trace Matters — is a technology startup focused on developing the next generation of mass spectrometry technologies for a variety of demanding applications. Trace Matters’ technologies include innovative mass spectrometry hardware, methods, and applications to solve the most demanding mass spectrometry analysis needs in various industries.
Elios
Energy & Power
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.
Invested Development
Food, Water, & Land
It's Electric
Infrastructure & Construction
it's electric accelerates the adoption of EVs with a scalable and simple Level-2 curbside charging solution, ensuring that every community has access to clean, sustainable transportation options. it's electric's "behind the meter" approach simplifies the installation process by eliminating the need for utility coordination, and is the first in the country to offer EVSE hardware with a detachable cord.
pH Matter
Energy & Power
Dexai Robotics
Food, Water, & Land
Malta
Energy & Power
Electric Fish
Energy & Power
Electric Fish — deploys NanoGrids at gas-stations for extreme-fast EV charging, and grid-scale energy-backup.
REVOLUTION Turbine Technologies
Energy & Power
REVOLUTION Turbine Technologies (RTT) — is the clean energy partner for oil & gas operators ready to leverage smart waste-energy recovery to generate emission-free power for remote operations. RTT is meeting the most demanding power generation challenges of today and tomorrow with a highly experienced team of entrepreneurs, technology developers, and innovators.
Public Grid
Energy & Power
Helix Power
Energy & Power
Helix Power — is a developer of grid scale high power energy storage and power management systems. Their 1MW flywheel is designed for high-power, high-cycle, long-life applications such as metro rail and microgrids.
Night Vision Technology Solutions (NVTS)
Noteworthy AI
Energy & Power
Noteworthy AI — helps electric utilities increase the reliability, resiliency and safety of the distribution grid while reducing cost.
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.
ZwitterCo
Food, Water, & Land
Nanofiltration membranes for wastewater treatment with unprecedented fouling-resistance and size-selectivity.
Littoral Power Systems
Energy & Power
LPS sells and maintains innovative, cost-effective, low impact hydropower and ocean power equipment.
Fysikes Biosolutions
Energy & Power
Fysikes Biosolutions — develops renewable green fuels (methanol, ammonia, and naphtas) via the production of hydrogen and concentrated CO2 from direct air capture and industrial CO2 capture technologies.
Visolis
Infrastructure & Construction
Keystone Tower Systems
Energy & Power
Trace Matters
Manufacturing & Processing
Trace Matters — is a technology startup focused on developing the next generation of mass spectrometry technologies for a variety of demanding applications. Trace Matters’ technologies include innovative mass spectrometry hardware, methods, and applications to solve the most demanding mass spectrometry analysis needs in various industries.
Elios
Energy & Power
KUBO Greenhouse Projects
Food, Water, & Land
Veloce Energy
Energy & Power
Veloce Energy — develops technology to create intelligent, flexible, and scalable grid-edge energy networks (GrEEN). Initially focused on cost-reduction in EV charging stations, the Veloce FastGrid™ system uniquely combines energy storage, intelligence, a streamlined installation system, and a unique charging-infrastructure-as-a-service model to maximize and deliver customer value.
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.
SiTration
Manufacturing & Processing
SiTration — is developing a novel membrane filtration technology that combines durability and performance at low cost to enable highly efficient separations in today’s mega-industries.
Patch
Transportation & Logistics
Giner Labs
Energy & Power
At Giner Labs, we focus on developing innovative solutions in electrochemical sensors, electrolyzers, fuel cells, advanced materials, and medical devices. Our goal is to create technologies that have a profound impact on various sectors, including clean energy, medical applications, as well as aerospace and defense.
Sustonable
Manufacturing & Processing
Sustonable — mixes post-consumer recycled plastic bottles, recycled glass and natural stone to create a circular, high-quality surface material, that can be used for kitchen tops, wall panels and furniture purposes.
Micronic Technologies
Food, Water, & Land
Micronic Technologies — is a women co-founded and led, clean-tech company that is transforming industrial wastewater into high-value resources.
Ranger Solar
Energy & Power
Euphree
Transportation & Logistics
Electric bikes made fashionable.
Future
Future — simplifies the transition to a net-zero economy for individuals and families. Future offers a set of financial tools and incentives for climate smart living. Future takes a 360°view of spending and generates individualized options to save money and reduce carbon emissions with their decision-engine.
Tank Utility
Energy & Power
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.
Electra
Manufacturing & Processing
ElectraSteel's — mission is to electrify and decarbonize steelmaking using renewable energy with zero carbon dioxide emissions while lowering the energy intensity and cost.
NBD Nano
Manufacturing & Processing
NBD Nano — utilizes biomimicry to create functional and durable surface coatings that improve water collection, transport, and repellency.
Autonomous Marine Systems
Food, Water, & Land
Infranergy
Energy & Power
Nexus Circular
Manufacturing & Processing
Ohmium International
Energy & Power
Resonant Energy
Energy & Power
KUBO Greenhouse Projects
Food, Water, & Land
Veloce Energy
Energy & Power
Veloce Energy — develops technology to create intelligent, flexible, and scalable grid-edge energy networks (GrEEN). Initially focused on cost-reduction in EV charging stations, the Veloce FastGrid™ system uniquely combines energy storage, intelligence, a streamlined installation system, and a unique charging-infrastructure-as-a-service model to maximize and deliver customer value.
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.
SiTration
Manufacturing & Processing
SiTration — is developing a novel membrane filtration technology that combines durability and performance at low cost to enable highly efficient separations in today’s mega-industries.
Patch
Transportation & Logistics
Giner Labs
Energy & Power
At Giner Labs, we focus on developing innovative solutions in electrochemical sensors, electrolyzers, fuel cells, advanced materials, and medical devices. Our goal is to create technologies that have a profound impact on various sectors, including clean energy, medical applications, as well as aerospace and defense.
Sustonable
Manufacturing & Processing
Sustonable — mixes post-consumer recycled plastic bottles, recycled glass and natural stone to create a circular, high-quality surface material, that can be used for kitchen tops, wall panels and furniture purposes.
Micronic Technologies
Food, Water, & Land
Micronic Technologies — is a women co-founded and led, clean-tech company that is transforming industrial wastewater into high-value resources.
Ranger Solar
Energy & Power
Euphree
Transportation & Logistics
Electric bikes made fashionable.
Future
Future — simplifies the transition to a net-zero economy for individuals and families. Future offers a set of financial tools and incentives for climate smart living. Future takes a 360°view of spending and generates individualized options to save money and reduce carbon emissions with their decision-engine.
Tank Utility
Energy & Power
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.
Electra
Manufacturing & Processing
ElectraSteel's — mission is to electrify and decarbonize steelmaking using renewable energy with zero carbon dioxide emissions while lowering the energy intensity and cost.
NBD Nano
Manufacturing & Processing
NBD Nano — utilizes biomimicry to create functional and durable surface coatings that improve water collection, transport, and repellency.
Autonomous Marine Systems
Food, Water, & Land
Infranergy
Energy & Power
Nexus Circular
Manufacturing & Processing
Ohmium International
Energy & Power
Resonant Energy
Energy & Power
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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