Skytree has confirmed that its direct air capture (DAC) system can now produce liquid carbon dioxide at beverage-grade purity, marking a milestone for industries reliant on consistent CO₂ supply.
The company’s Stratus Alpha prototype, tested at its Almere site in the Netherlands, delivered liquefied CO₂ with a purity of 99.98%, surpassing the 99.9% benchmark required by the International Society of Beverage Technologists. The validation demonstrates the feasibility of generating transportable, high-quality CO₂ directly from the air without relying on fossil-fuel sources.
The system integrates carbon capture and liquefaction, offering on-site or regional production capabilities. This could stabilise CO₂ availability for breweries, greenhouses, and food producers facing price volatility and shortages in traditional markets. The ability to operate during off-peak energy periods and store CO₂ for later use adds potential cost and energy efficiency benefits.
The Stratus Alpha prototype is also serving as a live test unit, with operational data feeding into the design of Skytree’s first commercial Stratus systems, scheduled for 2026.
Founded in 2014, Amsterdam-based Skytree originated from European Space Agency research and is expanding globally with plug-and-play and utility-scale DAC solutions aimed at producing up to two million tonnes of CO₂ annually.