Climeworks Mammoth Phase II DAC Plant Goes Live: Annual CO2 Capture Exceeds 100,000 Tons
Iceland's Mammoth Phase II expansion brings total capture capacity to 100,000 tons of CO2 annually, with capture costs dropping to $350 per ton.
Climeworks Mammoth Phase II DAC Plant Goes Live
On October 3, 2028, Swiss carbon capture company Climeworks announced the official launch of Phase II of its Mammoth direct air capture (DAC) plant in Iceland. The Phase II expansion adds 12 capture modules, bringing total capacity from 4,000 to 100,000 tons of CO2 annually, making it the world's largest DAC facility.
Mammoth uses solid amine sorbents to capture CO2 from the atmosphere, then releases pure CO2 through a geothermal energy-powered high-temperature desorption process. Released CO2 is injected into underground basalt formations, reacting with minerals to formite for permanent sequestration.
Climeworks CEO Christoph Gebald says capture costs have dropped from $600 per ton in 2021 to $350, targeting below $100 by 2030. Tech companies including Microsoft, Stripe, and Shopify have signed long-term carbon removal purchase agreements.
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