Helping climatetech startupsTransformindustry faster

Polymer-X
Manufacturing & Processing

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.

Innovator Energy
Energy & Power
Developing and deploying solutions in cooling, heating, and heat transfer

Respire Energy
Energy & Power
Safe, low-cost, and long-duration metal-air battery designed for microgrids

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

BETZ Group
Energy & Power
BETZ Group lead a global team of passionate professionals dedicated to advancing the development and adoption of innovative data technologies,remote sensing technologies and IT solutions in the fields of cleantech and critical infrastructure.

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.

American Battery Technology Company
Energy & Power
Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company

EcoForge
Food, Water, & Land
-- is a building material technology company developing affordable, high-performance building materials from local agricultural residues, replacing energy-intensive, fossil-based materials. This sustainable approach increases resilience to climate and supply chain risks, supports local farming, and job creation. Moreover, EcoForge’s toxic chemical-free material recipe promotes healthier indoor environments.

Pirl
Transportation & Logistics

Electrona Robotics
Manufacturing & Processing

Packetized Energy
Energy & Power

R3 Energy
Energy & Power

Starfield
Food, Water, & Land

REON Technology
Energy & Power
AI-driven optimization of systems through tailored power management of batteries and PV panels for energy storage

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.

energyGuard
Infrastructure & Construction

AmpUp
Transportation & Logistics

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

WhaleSpotter
Transportation & Logistics
Thermal imaging and AI to prevent marine mammal strikes at sea

Polymer-X
Manufacturing & Processing

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.

Innovator Energy
Energy & Power
Developing and deploying solutions in cooling, heating, and heat transfer

Respire Energy
Energy & Power
Safe, low-cost, and long-duration metal-air battery designed for microgrids

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

BETZ Group
Energy & Power
BETZ Group lead a global team of passionate professionals dedicated to advancing the development and adoption of innovative data technologies,remote sensing technologies and IT solutions in the fields of cleantech and critical infrastructure.

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.

American Battery Technology Company
Energy & Power
Advanced technology, first-mover lithium-ion battery recycling and primary battery metal extraction company

EcoForge
Food, Water, & Land
-- is a building material technology company developing affordable, high-performance building materials from local agricultural residues, replacing energy-intensive, fossil-based materials. This sustainable approach increases resilience to climate and supply chain risks, supports local farming, and job creation. Moreover, EcoForge’s toxic chemical-free material recipe promotes healthier indoor environments.

Pirl
Transportation & Logistics

Electrona Robotics
Manufacturing & Processing

Packetized Energy
Energy & Power

R3 Energy
Energy & Power

Starfield
Food, Water, & Land

REON Technology
Energy & Power
AI-driven optimization of systems through tailored power management of batteries and PV panels for energy storage

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.

energyGuard
Infrastructure & Construction

AmpUp
Transportation & Logistics

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

WhaleSpotter
Transportation & Logistics
Thermal imaging and AI to prevent marine mammal strikes at sea

Intention
Energy & Power
Climate-infrastructure-investment platform

Wootz
Manufacturing & Processing
Carbon nanotube supermaterials to replace or augment traditional metallic conductors

Prime Lightworks
Energy & Power
Prime Lightworks — makes breakthrough electric propulsion systems for space satellites that are solar-powered, fully renewable, and consume zero fuel. The company’s goal is to eliminate fuel emissions from space propulsion while drastically reducing cost and waste.

SparkCharge
Transportation & Logistics
SparkCharge — is creating a more efficient and connected world of transportation by eliminating range anxiety with its ultra-fast, portable, and modular charging station for electric vehicles.

GreenLIB
Manufacturing & Processing

RISE Robotics
Manufacturing & Processing

ZettaConn
Energy & Power

9T Labs
Manufacturing & Processing

QD Solar
Energy & Power

Climative
Energy & Power
AI-assisted home-energy assessments deployed in an interactive, web-based platform

HyperKelp
Food, Water, & Land
HyperKelp — produces the Kelp Smart Buoy—a hosted payload platform capable of carrying hundreds of sensors—that collects and transmits marine-level data for wind farmers, climate scientists, and military intelligence officials.

Root AI
Food, Water, & Land

Altaeros
Energy & Power

Lumafield
Manufacturing & Processing
Lumafield — is making an easy-to-use CT scanner and powerful, cloud-based analysis software that can solve tough engineering challenges at every stage of the product development process.

Adept Materials
Infrastructure & Construction
Material innovations that improve moisture regulation, comfort, and energy efficiency

Bevi
Food, Water, & Land

SteamIQ
Manufacturing & Processing

Suyana Climate Insurance

Sensai Analytics
Energy & Power
Sensai Analytics — is developing an enterprise AI platform that enables companies with limited machine learning expertise to build scalable and robust time series forecasting models.

PolyQor (Innova8e)
Manufacturing & Processing
Concept Loop is dedicated to repurposing low-value post-industrial and post-consumer plastic waste into sustainable building materials. Our flagship product, EcoGrete, is used in the production of high-strength paver blocks and tiles, offering an eco-friendly solution while reducing environmental impact.

Intention
Energy & Power
Climate-infrastructure-investment platform

Wootz
Manufacturing & Processing
Carbon nanotube supermaterials to replace or augment traditional metallic conductors

Prime Lightworks
Energy & Power
Prime Lightworks — makes breakthrough electric propulsion systems for space satellites that are solar-powered, fully renewable, and consume zero fuel. The company’s goal is to eliminate fuel emissions from space propulsion while drastically reducing cost and waste.

SparkCharge
Transportation & Logistics
SparkCharge — is creating a more efficient and connected world of transportation by eliminating range anxiety with its ultra-fast, portable, and modular charging station for electric vehicles.

GreenLIB
Manufacturing & Processing

RISE Robotics
Manufacturing & Processing

ZettaConn
Energy & Power

9T Labs
Manufacturing & Processing

QD Solar
Energy & Power

Climative
Energy & Power
AI-assisted home-energy assessments deployed in an interactive, web-based platform

HyperKelp
Food, Water, & Land
HyperKelp — produces the Kelp Smart Buoy—a hosted payload platform capable of carrying hundreds of sensors—that collects and transmits marine-level data for wind farmers, climate scientists, and military intelligence officials.

Root AI
Food, Water, & Land

Altaeros
Energy & Power

Lumafield
Manufacturing & Processing
Lumafield — is making an easy-to-use CT scanner and powerful, cloud-based analysis software that can solve tough engineering challenges at every stage of the product development process.

Adept Materials
Infrastructure & Construction
Material innovations that improve moisture regulation, comfort, and energy efficiency

Bevi
Food, Water, & Land

SteamIQ
Manufacturing & Processing

Suyana Climate Insurance

Sensai Analytics
Energy & Power
Sensai Analytics — is developing an enterprise AI platform that enables companies with limited machine learning expertise to build scalable and robust time series forecasting models.

PolyQor (Innova8e)
Manufacturing & Processing
Concept Loop is dedicated to repurposing low-value post-industrial and post-consumer plastic waste into sustainable building materials. Our flagship product, EcoGrete, is used in the production of high-strength paver blocks and tiles, offering an eco-friendly solution while reducing environmental impact.




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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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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