Direct air carbon capture implies absorbing the emissions from the atmosphere through special filters, and the emissions are then either stored underground or in charcoal, or used in the manufacturing of biofuels.

ESG Today writes that the captured carbon dioxide emissions will be stored permanently and won't be used to produce fossil fuels. 1PointFive's upcoming plant, called STRATOS, is expected to be one of the largest carbon capture facilities in the world, having a maximum capacity of 500.000 tons of CO2.

Michael Avery, President and General Manager of 1PointFive, said that "energy demand across the technology industry is increasing and we believe Direct Air Capture is uniquely suited to remove residual emissions and further climate goals."

Microsoft signed multiple agreements since the beginning of 2024 to make sure that it becomes more sustainable and lowers its carbon footprint. One of those agreements was signed with carbon dioxide removal startup Neustark, which operates 14 sites with a total capacity of 5,000 tons per year and company officials say they target the capture of millions of tons of CO2 annually in 2030.

Switzerland-based Neustark uses recycled construction materials from demolitions, such as concrete, to permanently store carbon dioxide captured from the atmosphere. The way this process works is by combining the concrete with liquefied CO2 emissions captured from biogas plants, thus embedding the two materials, mineralizing the carbon dioxide.

The resulted carbonated granules can be used by construction companies when building roads or manufacturing recycled, sustainable concrete.

Regarding the recent deal with 1PointFive, Brian Marrs, Senior Director for Carbon Removal and Energy at Microsoft, said that "to achieve the gigatons of removals needed this century, first-of-a-kind projects like STRATOS are essential to move from pilots to scale. DAC plays an important role in Microsoft’s carbon removal portfolio supporting our broader goal of becoming carbon negative by 2030."