Direct Air Capture (DAC)
Direct air capture is a technology that extracts CO₂ directly from the ambient atmosphere using chemical processes, providing a method for carbon dioxide removal independent of emission sources.
What is Direct Air Capture (DAC)?
DAC systems use chemical sorbents or solvents to capture CO₂ from the air at concentrations of approximately 420 ppm. The captured CO₂ can be permanently stored underground (DACCS) or used in products. DAC is one of the few carbon removal technologies that can achieve near-permanent sequestration when combined with geological storage. However, current costs (£300–800 per tonne) are significantly higher than nature-based solutions, and the technology is energy-intensive.
Practical Examples
Climeworks operates commercial DAC plants in Iceland, capturing CO₂ and injecting it into basalt rock where it mineralises permanently.
A technology company purchases DAC removal credits at £600/tCO₂e for its residual emissions, valuing the high permanence over cheaper offset alternatives.
How Climatise Helps
Climatise quantifies residual emissions to help organisations determine the appropriate scale and budget for DAC-based carbon removal.
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