Overview

• The contract, which begins in 2026 and runs through 2037, commits Microsoft to purchase 4.9 million metric tons of removal credits from Vaulted Deep
• Vaulted Deep’s process blends human and farm waste into a slurry that is injected about 5,000 feet underground for permanent CO₂ sequestration
• Credits under the deal are priced at roughly $350 per metric ton, reflecting the premium costs of durable removal in emerging carbon markets
• To date, Vaulted Deep has locked away over 18,000 metric tons of CO₂ and secured a $32 million Series A round led by Prelude Ventures after finishing as an Xprize Carbon runner-up
• The bioslurry pact supplements Microsoft’s reforestation and industrial capture agreements as its emissions have climbed nearly 25% since 2020