Direct Air Carbon Capture

Direct Air Carbon Capture is the only technology that can remove century-old CO2 directly from the air, with Climeworks' Orca plant capturing 4,000 tons annually. However, costs between $400 and $600 per ton are 40% higher than the typical rival, making it less economical than #4 Ocean Iron Fertilization’s estimated $150 per ton. To scale to 1 gigaton per year would require $400 billion in investment and enough energy to power 50 million homes.