Helping climatetech startupsTransformindustry faster

WattSto Energy
Energy & Power
We are a leading manufacturer of Long Duration Energy Storage (LDES) and Unique Hybrid Design System, providing Fast, Long Duration, Safe, Sustainable, and Cost-effective energy storage solutions at the microgrid and grid levels. Our innovative technology accelerates the integration of renewable energy, reduces carbon emissions, and provides power for a cleaner future.

Riptide Autonomous Solutions
Transportation & Logistics

Sunforge
Energy & Power
Sunforge — creates advanced Maximum Power Point Tracking (MPPT) solar charge controllers for off-grid applications. Its controllers are designed to extract the most power possible from your solar panels and maximize system up-time through the worst conditions.

DASH Clean Energy
Energy & Power
Dash Clean Energy — has developed a hydrogen simulation tool that can be used by developers to evaluate existing and planned wind and solar projects and how to manage and produce hydrogen cost competitively with existing hydrogen production pathways.

Clean Power
Energy & Power

Hempitecture
Manufacturing & Processing
Hempitecture (Ketchum, ID) is a manufacturer and distributor of biobased building materials, including their low embodied carbon insulation, HempWool®.

Arbor Energy Holdings Inc
Energy & Power
Digital-energy platform to help homeowners live more sustainably

Ohmium International
Energy & Power

Cella Mineral Storage
Manufacturing & Processing
Turning volcanic formations into reliable, low-cost CO₂ storage

IncentiFind
Infrastructure & Construction

Rushnu
Manufacturing & Processing
Turns waste into carbon-neutral chemistry

CeraPhi Energy
Energy & Power
CeraPhi Energy — is a geothermal energy company developing a “plug and play” scalable technology platform.

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.

Turnover Labs
Manufacturing & Processing
Modular electrolyzers converting dirty onsite CO₂ into basic chemicals

RailPod
Transportation & Logistics

MicroEra Power
Energy & Power
MicroEra Power — develops and manufactures THERMAplus, a hardware + software solution for smart Thermal Energy Storage for buildings.

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.

Smart Resource Labs
Energy & Power
We make data easy

ZS2 Technologies
Manufacturing & Processing
ZS2 Technologies (Calgary, AB) creates magnesium-based advanced building products that can store up to 20 wt.% CO2 from proprietary carbon capture technology.

Energy Well Texas
Energy & Power
Our mission is to strengthen communities by helping millions of people switch to fairer, more resilient, 100% clean energy.

WattSto Energy
Energy & Power
We are a leading manufacturer of Long Duration Energy Storage (LDES) and Unique Hybrid Design System, providing Fast, Long Duration, Safe, Sustainable, and Cost-effective energy storage solutions at the microgrid and grid levels. Our innovative technology accelerates the integration of renewable energy, reduces carbon emissions, and provides power for a cleaner future.

Riptide Autonomous Solutions
Transportation & Logistics

Sunforge
Energy & Power
Sunforge — creates advanced Maximum Power Point Tracking (MPPT) solar charge controllers for off-grid applications. Its controllers are designed to extract the most power possible from your solar panels and maximize system up-time through the worst conditions.

DASH Clean Energy
Energy & Power
Dash Clean Energy — has developed a hydrogen simulation tool that can be used by developers to evaluate existing and planned wind and solar projects and how to manage and produce hydrogen cost competitively with existing hydrogen production pathways.

Clean Power
Energy & Power

Hempitecture
Manufacturing & Processing
Hempitecture (Ketchum, ID) is a manufacturer and distributor of biobased building materials, including their low embodied carbon insulation, HempWool®.

Arbor Energy Holdings Inc
Energy & Power
Digital-energy platform to help homeowners live more sustainably

Ohmium International
Energy & Power

Cella Mineral Storage
Manufacturing & Processing
Turning volcanic formations into reliable, low-cost CO₂ storage

IncentiFind
Infrastructure & Construction

Rushnu
Manufacturing & Processing
Turns waste into carbon-neutral chemistry

CeraPhi Energy
Energy & Power
CeraPhi Energy — is a geothermal energy company developing a “plug and play” scalable technology platform.

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.

Turnover Labs
Manufacturing & Processing
Modular electrolyzers converting dirty onsite CO₂ into basic chemicals

RailPod
Transportation & Logistics

MicroEra Power
Energy & Power
MicroEra Power — develops and manufactures THERMAplus, a hardware + software solution for smart Thermal Energy Storage for buildings.

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.

Smart Resource Labs
Energy & Power
We make data easy

ZS2 Technologies
Manufacturing & Processing
ZS2 Technologies (Calgary, AB) creates magnesium-based advanced building products that can store up to 20 wt.% CO2 from proprietary carbon capture technology.

Energy Well Texas
Energy & Power
Our mission is to strengthen communities by helping millions of people switch to fairer, more resilient, 100% clean energy.

C16 Biosciences
Manufacturing & Processing

Quantum Diamond Technologies
Manufacturing & Processing

Parasanti
Parasanti — is a data orchestration/edge computing firm, specializing in extreme operating environments within both the federal space and advanced energy solutions.

Stork, a Fluor Company

Applied Gaia
Food, Water, & Land
Sequestering carbon in the soil

Tagup
Manufacturing & Processing
Tagup — has developed new machine learning methods and a software platform to predict industrial equipment failure, making physical infrastructure safer and more reliable.

Trillium Brewing Company
Food, Water, & Land

SepPure Technologies
Transportation & Logistics
SepPure — is dramatically reducing energy consumption and pollution globally by enabling the most effective chemical separation at a molecular level, without the traditional use of heat.

Opus One Solutions
Energy & Power

Invested Development
Food, Water, & Land

Alkemy Environmental
Manufacturing & Processing
Alkemy Environmental — holds the only technology solution that can recycle waste into high strength ceramics for the building materials market.

eologix sensor technology
Energy & Power

LA NPDT

DIOXYCLE
Manufacturing & Processing
DIOXYCLE — is building an electrolysis platform to convert carbon emissions into chemicals and fuel building blocks.

ULTROGEN
Energy & Power
ULTROGEN: GIGAWATT-Scale Hydrogen Generator Technology at 90% Lower CAPEX $10B+ market cap opportunity for micro-scale hydrogen merchant plants in Oppty. Zones 50X more hydrogen from H2O electrolysis at 40%+ lower retail price & Zero CO2 emissions

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.

Mission Zero Technologies
Manufacturing & Processing
Efficient electrochemistry to capture CO₂

Quantum New Energy
Infrastructure & Construction
Quantum New Energy’s platform, EnerWisely, is a science-based solution that integrates IoT with data analytics and behavioral science. Quantum New Energy helps users transform their unused energy consumption data into personalized, actionable insights to maximize their monetary savings and reduce their environmental impacts.

WIP International Services
Food, Water, & Land
WIP International Services LLC — works with partners around the world to deliver a renewable source of pure drinking water

Desktop Health
Manufacturing & Processing
Desktop Health (formerly Beacon Bio) — is designing biodegradable and biomimetic tissue grafts using novel materials science and 3D printing technologies.

C16 Biosciences
Manufacturing & Processing

Quantum Diamond Technologies
Manufacturing & Processing

Parasanti
Parasanti — is a data orchestration/edge computing firm, specializing in extreme operating environments within both the federal space and advanced energy solutions.

Stork, a Fluor Company

Applied Gaia
Food, Water, & Land
Sequestering carbon in the soil

Tagup
Manufacturing & Processing
Tagup — has developed new machine learning methods and a software platform to predict industrial equipment failure, making physical infrastructure safer and more reliable.

Trillium Brewing Company
Food, Water, & Land

SepPure Technologies
Transportation & Logistics
SepPure — is dramatically reducing energy consumption and pollution globally by enabling the most effective chemical separation at a molecular level, without the traditional use of heat.

Opus One Solutions
Energy & Power

Invested Development
Food, Water, & Land

Alkemy Environmental
Manufacturing & Processing
Alkemy Environmental — holds the only technology solution that can recycle waste into high strength ceramics for the building materials market.

eologix sensor technology
Energy & Power

LA NPDT

DIOXYCLE
Manufacturing & Processing
DIOXYCLE — is building an electrolysis platform to convert carbon emissions into chemicals and fuel building blocks.

ULTROGEN
Energy & Power
ULTROGEN: GIGAWATT-Scale Hydrogen Generator Technology at 90% Lower CAPEX $10B+ market cap opportunity for micro-scale hydrogen merchant plants in Oppty. Zones 50X more hydrogen from H2O electrolysis at 40%+ lower retail price & Zero CO2 emissions

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.

Mission Zero Technologies
Manufacturing & Processing
Efficient electrochemistry to capture CO₂

Quantum New Energy
Infrastructure & Construction
Quantum New Energy’s platform, EnerWisely, is a science-based solution that integrates IoT with data analytics and behavioral science. Quantum New Energy helps users transform their unused energy consumption data into personalized, actionable insights to maximize their monetary savings and reduce their environmental impacts.

WIP International Services
Food, Water, & Land
WIP International Services LLC — works with partners around the world to deliver a renewable source of pure drinking water

Desktop Health
Manufacturing & Processing
Desktop Health (formerly Beacon Bio) — is designing biodegradable and biomimetic tissue grafts using novel materials science and 3D printing technologies.




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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