Shopify Inc.’s agreement is the largest publicly announced corporate purchase of direct air capture, or DAC, for carbon offsets, according to Carbon Engineering, a Canadian firm seeking to commercialize the nascent climate-change-fighting technology. The offsets company said yesterday that it is now accepting DAC carbon offset purchases from other customers, including ones as small as 100 metric tons. Lütke estimated the cost of sequestering carbon dioxide via DAC at the time was upward of $1,000 per metric ton. Last October, Shopify made its first multiyear DAC investment, purchasing 5,000 metric tons from Climeworks, a DAC company based in Zurich. Its buildings and work travel produced roughly 7,960 metric tons of carbon emissions in 2019, the most recent year for which data is available, an increase of nearly 9% from 2018 levels.