Ocean Carbon Capture Units Exceed One Million Tons Annual Capacity
Climeworks and COSCO Shipping's ocean carbon capture platforms have surpassed 1 million tons of annual CO₂ capture, with unit costs dropping to $85 per ton.
Swiss carbon capture company Climeworks and China's COSCO Shipping Group have deployed 12 large ocean carbon capture platforms in the Pacific. Each platform uses alkaline seawater solutions to absorb atmospheric CO₂, then extracts pure CO₂ via electrochemical methods for geological sequestration. The 12 platforms have collectively surpassed 1 million tons of annual CO₂ capture, with unit capture costs dropping to $85/ton — a 60% decrease from 2025. Microsoft and Stripe have signed long-term carbon credit procurement contracts.
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