Helping climatetech startupsTransformindustry faster

Halo Energy
Energy & Power

Independence Coffee Company
Food, Water, & Land
Our new 100% Compostable Coffee Pods are made with no plastic. They are Fair Trade, Organic and are produced from the best coffee growing regions in the world. Our focus on reduced environmental impacts and 'give-backs' to great local and national causes runs in our DNA. We partner with large corporate, grocery and food service providers to not only distribute our products, but also educate consumers on the importance of sustainable cpg packaging for our earth's future.

HarvestAi
Food, Water, & Land
Computer vision and AI to provide greenhouse operators with automated data for optimized harvest planning

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.

Studio 3e8
Manufacturing & Processing
Metal 3D printing in a desktop form factor.

Solas Capture
Solas Capture is developing a sunlight-powered process for sustainable lithium carbonate production using novel photobase chemistry. Our technology converts lithium brines and CO₂ into battery-grade materials with lower energy use, reduced waste, and a significantly smaller environmental footprint than conventional methods.

Alloy Enterprises
Manufacturing & Processing
Alloy Enterprises — is developing a new manufacturing method to change the way the world makes aluminum parts.

Ohm Analytics
Energy & Power
Aggregating clean energy data based on thousands of sources for visibility and intelligence in the U.S. solar market

IncentiFind
Infrastructure & Construction

PV Nano Cell
Energy & Power
Advanced nano conductive pastes enabling finer, faster, and more efficient metallization for next-gen solar cells

NeuraliX
Energy & Power
AI solutions to optimize operations and reduce emissions for the energy and manufacturing sectors

SpringCycle Energy
Energy & Power
Rechargeable iron fuel to transform solar into baseload power

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.

Blue Sky Analytics
Food, Water, & Land
Blue Sky Analytics uses satellite data and AI to provide high resolution environmental insights for ESG investing and climate risk assessment.

Biosimo
Manufacturing & Processing
Biosimo makes eco-friendly chemicals from plant waste using a clean, low-cost process

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.

AmpUp
Transportation & Logistics

Seabound
Transportation & Logistics

Licube
Manufacturing & Processing
Sustainable lithium recovery through electrodialysis

Priority Investor Loans
Infrastructure & Construction
Simplified loan programs to fund real estate investors nationwide with income-producing properties

Halo Energy
Energy & Power

Independence Coffee Company
Food, Water, & Land
Our new 100% Compostable Coffee Pods are made with no plastic. They are Fair Trade, Organic and are produced from the best coffee growing regions in the world. Our focus on reduced environmental impacts and 'give-backs' to great local and national causes runs in our DNA. We partner with large corporate, grocery and food service providers to not only distribute our products, but also educate consumers on the importance of sustainable cpg packaging for our earth's future.

HarvestAi
Food, Water, & Land
Computer vision and AI to provide greenhouse operators with automated data for optimized harvest planning

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.

Studio 3e8
Manufacturing & Processing
Metal 3D printing in a desktop form factor.

Solas Capture
Solas Capture is developing a sunlight-powered process for sustainable lithium carbonate production using novel photobase chemistry. Our technology converts lithium brines and CO₂ into battery-grade materials with lower energy use, reduced waste, and a significantly smaller environmental footprint than conventional methods.

Alloy Enterprises
Manufacturing & Processing
Alloy Enterprises — is developing a new manufacturing method to change the way the world makes aluminum parts.

Ohm Analytics
Energy & Power
Aggregating clean energy data based on thousands of sources for visibility and intelligence in the U.S. solar market

IncentiFind
Infrastructure & Construction

PV Nano Cell
Energy & Power
Advanced nano conductive pastes enabling finer, faster, and more efficient metallization for next-gen solar cells

NeuraliX
Energy & Power
AI solutions to optimize operations and reduce emissions for the energy and manufacturing sectors

SpringCycle Energy
Energy & Power
Rechargeable iron fuel to transform solar into baseload power

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.

Blue Sky Analytics
Food, Water, & Land
Blue Sky Analytics uses satellite data and AI to provide high resolution environmental insights for ESG investing and climate risk assessment.

Biosimo
Manufacturing & Processing
Biosimo makes eco-friendly chemicals from plant waste using a clean, low-cost process

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.

AmpUp
Transportation & Logistics

Seabound
Transportation & Logistics

Licube
Manufacturing & Processing
Sustainable lithium recovery through electrodialysis

Priority Investor Loans
Infrastructure & Construction
Simplified loan programs to fund real estate investors nationwide with income-producing properties

AgZen
Food, Water, & Land
AI that monitors leaf coverage during spraying to reduce pesticide usage

Biobot Analytics
Food, Water, & Land

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.

SkyH2O
Food, Water, & Land
Atmospheric water generation for commercial and government projects

Transocean

Maxwellian
Energy & Power
Maxwellian — empowers mobility, energy, and agricultural industries by providing autonomous sanitization and monitoring solutions using unique optical IoT technology to ensure data accessibility for safety and asset management.

FluxWorks
Manufacturing & Processing

Nth Cycle
Manufacturing & Processing
Using electro-extraction to recover production-grade critical minerals from e-waste, low-grade ore, and mine tailings

C16 Biosciences
Manufacturing & Processing

KVD
Manufacturing & Processing
KVD enables EELS in existing SEMs, providing a cost-effective way to see light elements and bonding states.

WattGlass
Energy & Power

ALLY Energy
Infrastructure & Construction
ALLY Energy — is an energy tech and human capital services company that offers packaged services and bespoke offerings such as talent engagement, culture development and design, recruitment training and coaching, and consulting.

Vertical Semiconductor
Energy & Power
Power supply units designed to unleash the full potential of AI & HPC

Realizse
Energy & Power
Tokenization and product verification for circularity, energy, and the real estate markets

Phase Two Chemicals
Manufacturing & Processing
Advanced electrode and reactor designs for on-site, on-demand chemical generation and energy storage

ZwitterCo
Food, Water, & Land
Nanofiltration membranes for wastewater treatment with unprecedented fouling-resistance and size-selectivity.

Liquid-Charge
Energy & Power
Liquid-Charge — will manufacture mobile Solid Oxide Fuel Cell (SOFC) range extenders for battery electric vehicles, using them to trickle-charge batteries while effortlessly retaining CO2 for sequestration and recycling.

Harmony Desalting
Food, Water, & Land
Batch reverse osmosis process for low-cost water desalination

Glimpse Engineering
Manufacturing & Processing
Visualizing battery scans and continuously monitoring key battery-design features

Freshr Technologies
Food, Water, & Land

AgZen
Food, Water, & Land
AI that monitors leaf coverage during spraying to reduce pesticide usage

Biobot Analytics
Food, Water, & Land

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.

SkyH2O
Food, Water, & Land
Atmospheric water generation for commercial and government projects

Transocean

Maxwellian
Energy & Power
Maxwellian — empowers mobility, energy, and agricultural industries by providing autonomous sanitization and monitoring solutions using unique optical IoT technology to ensure data accessibility for safety and asset management.

FluxWorks
Manufacturing & Processing

Nth Cycle
Manufacturing & Processing
Using electro-extraction to recover production-grade critical minerals from e-waste, low-grade ore, and mine tailings

C16 Biosciences
Manufacturing & Processing

KVD
Manufacturing & Processing
KVD enables EELS in existing SEMs, providing a cost-effective way to see light elements and bonding states.

WattGlass
Energy & Power

ALLY Energy
Infrastructure & Construction
ALLY Energy — is an energy tech and human capital services company that offers packaged services and bespoke offerings such as talent engagement, culture development and design, recruitment training and coaching, and consulting.

Vertical Semiconductor
Energy & Power
Power supply units designed to unleash the full potential of AI & HPC

Realizse
Energy & Power
Tokenization and product verification for circularity, energy, and the real estate markets

Phase Two Chemicals
Manufacturing & Processing
Advanced electrode and reactor designs for on-site, on-demand chemical generation and energy storage

ZwitterCo
Food, Water, & Land
Nanofiltration membranes for wastewater treatment with unprecedented fouling-resistance and size-selectivity.

Liquid-Charge
Energy & Power
Liquid-Charge — will manufacture mobile Solid Oxide Fuel Cell (SOFC) range extenders for battery electric vehicles, using them to trickle-charge batteries while effortlessly retaining CO2 for sequestration and recycling.

Harmony Desalting
Food, Water, & Land
Batch reverse osmosis process for low-cost water desalination

Glimpse Engineering
Manufacturing & Processing
Visualizing battery scans and continuously monitoring key battery-design features

Freshr Technologies
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.


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.

Get Involved
We pride ourselves on being a convener of the climatetech ecosystem. Join us at an upcoming event to explore all things climate action and collaboration.

Explore Investing
Tap into deal flow with the world’s largest community of climate and energy startups.






















