First direct air capture paper for which all major components are either drawn from well-established commercial heritage or described in sufficient detail to allow assessment by third parties. Includes energy and materials balances, commercial engineering cost breakdown, and pilot plant data. When CO 2 is delivered at 15 MPa, the design requires either 8.81 GJ of natural gas, or 5.25 GJ of gas and 366 kWhr of electricity, per ton of CO 2 captured.

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In the originally published version of this article, Table 3 listed values for ''Engineering'' as $127.0M and $76.2M for ''Early Plant'' and ''Nth Plant'' scenarios, respectively. These values have been corrected online to $135.2M and $78.0M to match the engineering study from which Table 3 was drawn. All other values in Table 3 remain unchanged, and the summations are now correct. The authors regret this error.

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