Skytree Stratus
Modular, efficient direct air capture machine for CO₂ removal applications
Page last modified
July 28 2025
Skytree Stratus is a modular Direct Air Capture (DAC) machine designed for decentralized or industrial-scale applications. Its key feature is a unique dual chamber design that maintains a constant high temperature in the sorbent heating chamber, optimizing energy consumption by avoiding thermal losses from cyclic heating and cooling of mechanical parts.
The Stratus machine operates through a four-step process:
1. Sorbent transport system
2. Adsorption
3. Desorption
4. Release
It is designed to be adaptable, with add-on options for various site conditions and scenarios. These include climate packages for different environments (temperate, arid, tropical, polar), low-temperature heat integration capabilities, and liquefaction for long-term CO2 storage or on-site supply.
The technology boasts high energy efficiency, with one modeled scenario in a polar climate achieving 1.38 kWh per captured kg of CO2 and a daily capture capacity of 1,343 kg of CO2 per machine. The life cycle assessment in this scenario showed 85% net efficiency.
Skytree Stratus is scalable and can be deployed as single units or as part of larger Stratus Parks. It is designed for fast deployment and flexible scalability, making it suitable for various applications including carbon sequestration, greenhouses, power-to-X processes, drink carbonation, and water treatment. The technology aims to provide a practical, lower-risk path to bankable carbon removal and utilization.
Pros & Limitations
1
Optimize energy consumption through unique dual chamber design
1
Scale with precision
1
Operate with confidence
1
Adaptable design with add-on options for different climates and scenarios
1
Can utilize waste heat or low-temperature heat sources to improve efficiency
1
Modular and flexible for different site requirements and CO2 demands
1
Built for real-world versatility and adaptable to local conditions
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Upgradable on-site to minimize downtime
Specification
| Title | Description |
|---|---|
| Core Tech | Process Equipment |
| Industry | CCUS |
|
Design
|
Modular DAC machine
|
|
Application
|
Decentralized or industrial scale
|
|
Key feature
|
Dual chamber design
|
|
Energy efficiency
|
Optimized, with opportunity to utilize waste heat
|
|
Adaptability
|
Add-on options for various climates and scenarios
|
|
Climate packages
|
Temperate, Arid, Tropical, Polar
|
|
Heat integration
|
Optional low-temperature heat integration
|
|
Liquefaction
|
Optional CO2 liquefaction for storage or supply
|
|
Daily capture capacity
|
1,343kg of CO2 per machine (in polar climate scenario)
|
|
Energy efficiency polar
|
1.38 kWh per captured kg of CO2
|
|
Net efficiency polar
|
85% (based on Life Cycle Assessment)
|
Exclusive content
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Skytree is a company that specializes in developing and manufacturing advanced Direct Air Capture (DAC) technology. Their modular DAC machines, including the Skytree Stratus, are designed to capture CO₂ directly from the atmosphere for various applications such as carbon sequestration, greenhouse operations, power-to-X processes, drink carbonation, and water treatment. Leveraging expertise from the European Space Agency, Skytree has over a decade of applied research and innovation in DAC. The company aims to provide scalable, energy-efficient, and adaptable DAC solutions that can be deployed in various climates and integrated with different energy sources. Skytree's technology is designed to offer a practical and lower-risk path to carbon removal and utilization, with a focus on delivering a competitive levelized cost of CO₂ capture. The company collaborates with various partners and has been selected for innovative projects in the field of carbon capture and utilization.
Country of Headquarters
United States
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