Industrial mineralization company Arca is the latest durable carbon dioxide removal (CDR) supplier to strike an agreement with serial buyer Microsoft.
This week, the two companies announced an offtake agreement under which Arca is set to deliver nearly 300,000 tonnes of durable CDR for Microsoft over a period of 10 years.
Commenting on this milestone deal, Arca CEO Paul Needham stated, “This agreement with Microsoft validates industrial mineralization as a viable pathway for durable carbon removal with the potential to scale and meaningfully contribute to global climate goals.”
As a company specializing in industrial mineralization, Arca partners with mining and steel companies, leveraging their existing infrastructure and repurposing alkaline waste streams to capture and permanently store atmospheric CO2 as stable carbonate minerals.
This CDR approach comes with great climate-positive potential, as it uses a feedstock as abundant as industrial waste, which is said to amount to billions of tonnes that are already present at the Earth’s surface.
Its deployment requires minimal energy, land, and water resources, offering integration opportunities into existing industrial sites.
The CO2 removal effect achieved through industrial mineralization lasts for millennia, and it is tracked and validated through robust MRV systems that ensure transparency.
Beyond its powerful CDR effect, industrial mineralization also carries other valuable benefits, like reducing the environmental risks from waste and creating job opportunities for local communities, who help turn waste liabilities into climate assets.
In 2025, Arca successfully completed its first full-scale mineralization demonstration project at an active mine site, setting the stage for future projects at a larger scale.
Relevant: Arca Carbon Removal Methodology Successfully Validated By DNV
The deal with Microsoft fuels Arca to continue to expand its pipeline of mineralization projects, as the company works on advancing from pilots to million-tonne operations.
Phil Goodman, Director of Microsoft’s Carbon Dioxide Removal Program, shared that this offtake agreement diversifies the tech company’s CDR portfolio into a pathway that combines scalability and permanence.
He commented, “Arca brings notable scientific expertise and has proven they can sequester carbon through their demonstration project, giving us confidence to enter into a multi-year agreement. We are pleased to support Arca in advancing industrial mineralization.”
Read more: UNDO And Microsoft Sign New CDR Deal, Backed By Novel Inlandsis Financing
