The direct air capture industry got a boost last week with the opening of Mammoth, the largest plant yet for sucking carbon dioxide out of the atmosphere, but questions remain about whether the technology can scale up.
Humanity has spent the past few centuries releasing ever greater amounts of carbon dioxide into the atmosphere – a state of affairs that must be reversed if we are to get to grips with climate change. Removing such CO2 in a process called direct air capture (DAC) has been on the cards for some time, but finally, after years of research and small-scale pilot projects, giant carbon-sucking facilities are becoming a reality. The question is, will the industry grow large enough, fast enough?
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| The Mammoth direct air capture plant in Iceland is the largest in the world Climeworks |
DAC got a big boost last week when Swiss company Climeworks switched on a new plant called Mammoth. This can extract up to 36,000 tonnes of CO2 a year from the atmosphere – living up to its name, at least when compared with its predecessor Orca, which boasted a maximum capture capacity of just 4000 tonnes per year.
The new plant instantly quadrupled global capacity for DAC and is a sign of a step change under way in the industry. Mammoth will only hold the title of world’s largest DAC plant until next year, when the Stratos plant, built by a subsidiary of energy firm Occidental Petroleum using technology from Canadian DAC company Carbon Engineering, comes online. It will be able to extract half a million tonnes of CO2 a year.
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