Microsoft Partners with Vaulted Deep for the Second-Largest Carbon Removal Deal Ever
Microsoft has inked a long-term agreement to purchase up to 4.9 million metric tons of permanent carbon removal credits from Vaulted Deep, a carbon-negative tech startup backed by XPRIZE. Spanning 12 years through 2038, this deal marks one of the largest commitments to durable carbon removal in corporate history as part of Microsoft’s promise to be carbon negative by 2030 and reverse its historical emissions by 2050.
How Vaulted Deep’s Bioslurry Injection Works
Vaulted Deep’s process reduces harmful practices like land application or incineration of biosolids that can leak PFAS, methane, and nutrient runoff into the environment. It supplies climate mitigation while tackling public health and waste challenges, especially in underserved communities
The company’s facilities operate under full third-party verified measurement, reporting, and verification (MRV) protocols facilitated by Isometric Certify. This ensures delivery cadence is tracked monthly, not annually, enabling transparent credit issuance tied to actual performance
Wider Impact: Waste, Climate, and Co-Benefits
Vaulted Deep’s process reduces harmful practices like land application or incineration of biosolids that can leak PFAS, methane, and nutrient runoff into the environment. It supplies climate mitigation while tackling public health and waste challenges, especially in underserved communities.
The company’s facilities operate under full third-party verified measurement, reporting, and verification (MRV) protocols facilitated by Isometric Certify. This ensures delivery cadence is tracked monthly, not annually, enabling transparent credit issuance tied to actual performance.
What Comes Next for Vaulted Deep and Corporate Carbon Markets
Expansion across the U.S., with multiple sites in development to tap into over one billion tons of annual organic waste feedstock.
Strategic collaborations with municipalities, farms, and industries to scale site access and waste sourcing.
Continued credibility via verified early deliveries and rigorous MRV systems, laying the groundwork for future large-scale decarbonization frameworks.
Microsoft’s commitment may encourage other technology and industrial firms to invest in high-permanence, scientifically verified carbon removal approaches.
Final Takeaway
By investing in one of the world’s largest bioslurry sequestration deals, Microsoft and Vaulted Deep are shifting carbon removal from experimental to actionable. This partnership exemplifies a strategic, multi-benefit approach—pairing climate action with environmental justice, public health improvements, and scalable infrastructure. As carbon markets grow, Vaulted Deep’s integration of proven waste technologies and climate engineering may well define the next generation of sustainable carbon solutions.