Microsoft Signs 4.9 Million-tonne Carbon Removal Deal

Microsoft has signed a 12-year carbon offtake agreement with Vaulted Deep that will see the removal of up to 4.9 million tonnes of carbon dioxide and enable Vaulted to expand its operations to new sites across the US.

"As carbon removal moves beyond pilots and prototypes, there is growing demand for solutions that can scale safely and address real-world problems," said Julia Reichelstein, co-founder and CEO of Vaulted Deep. "Vaulted offers a dual solution: it meets urgent waste management needs and drives measurable climate and public health improvements. This agreement reflects a broader shift in how carbon removal is being deployed. It is no longer limited to emerging technologies but is increasingly delivered through large-scale existing infrastructure with novel applications."

"Vaulted Deep provides a differentiated, scalable approach to permanent carbon removal with low technology risk," added Brian Marrs, senior director of energy and carbon removal at Microsoft. "Its work delivers immediate climate benefits while stimulating local economies, and addresses long-standing environmental challenges that communities face every day. We support this solution as part of our broader effort to accelerate durable, high-integrity carbon removal."