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by schoen 1891 days ago
On the FAQ page there's an item about this:

https://www.climeworks.com/faq-about-direct-air-capture

> According to them, the grey emissions for the construction, operation and deconstruction of a Climeworks machine are less than 10% of the captured carbon dioxide with the use of waste heat and renewable electricity. Our goal is to reduce this to 4%.

(Apparently this is most practical in Iceland because of the abundant geothermal energy there.)