Limestone-Based DAC Systems

A climate technology firm named Origen, with operations in the United Kingdom and the United States, has received funding for its limestone-based DAC — an abbreviation for Direct Air Capture — system. This investment round was spearheaded by Barclays Climate Ventures and included participation from Shell Ventures, Exascale Fund, Elemental Impact, and Hatch. The capital is intended to accelerate the development and deployment of Origen's direct air capture system, which utilizes a process involving limestone to extract carbon dioxide from the atmosphere. The core technology involves treating limestone to create lime, which then naturally absorbs atmospheric CO₂ through a passive chemical process. The carbon is subsequently separated and stored permanently underground. Origen has announced collaborative projects spotlighting its limestone-based DAC system, including a facility in North Dakota aiming to capture 1,000 tons of CO₂ annually and a larger proposed project on the Gulf Coast with a potential capacity of 50,000 tons per year.

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