
Sustaera Claims 90%+ Efficiency in DAC — 3x Cheaper Than Incumbents
Sustaera, a North Carolina-based DAC startup, just dropped a bold claim: their third-generation electro-thermal approach captures CO₂ from air at 90%+ energy efficiency, with capital costs 3-5x lower than existing thermal DAC technologies. If verified at scale, that’s not incremental. It’s the kind of step change that could make DAC competitive with biochar. What’s Different?#Incumbent DAC systems — including Climeworks’ solid sorbent approach and Carbon Engineering’s liquid solvent method — typically max out around 40% thermal efficiency. Sustaera says its proprietary nano-structured sorbent combined with integrated electric heating smashes through that ceiling. ...








