Costing Direct Air Capture Deployment Towards Zero and Negative Carbon Emissions
WHITE PAPER
30 October 2025
By Prof. Don MacElroy, Professor Emeritus in Chemical Engineering, University College Dublin, and Chairman of the NEG8 Carbon Advisory Board
The question is often asked, “Is Direct Air Capture viable at a large scale?” Prof. Don MacElroy does the maths to find out.
Direct Air Capture (DAC) is becoming an important option for addressing CO₂ emissions that cannot be removed through emissions reduction alone.
This white paper examines the cost factors that shape DAC deployment and Prof. MacElroy explains why DAC is relevant not only for reaching net zero, but also for delivering negative emissions where CO₂ is permanently removed from the atmosphere and securely stored.
Prof MacElroy also explores the commercial case for DAC across hard-to-abate sectors, eFuels, carbon storage and long-term climate strategy.
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