
Direct air capture has emerged as a bold technology to suck CO₂ from the sky and help reverse climate change. In 2025, three frontrunners – Climeworks, Heirloom, and Carbon Engineering – are racing to scale DAC with very different approaches. Each company’s system has unique technical designs, energy needs, costs, and partners shaping its path. This report provides an in-depth comparison of Climeworks’ Generation 2 modular DAC system, Heirloom’s limestone-based DAC process, and Carbon Engineering’s AIR2 contactor. We’ll dissect how they capture CO₂, their efficiency and energy requirements, how easily they scale up, land and material needs, cost per ton, deployment status, business models, and what’s coming next.
Today’s highest-ranked model selections.
The catalysts most likely to move markets.
This is the clearest scheduled U.S.-market price-discovery point today and can transmit weekend news into equity-index futures before Monday's cash session.
The Q2 retail package can move NZD and regional risk sentiment. Spillover to U.S. assets is usually secondary unless the result is unusually large.
The absence of U.S. releases, earnings, IPO pricings and split events leaves fewer scheduled catalysts, increasing the relative importance of weekend headlines and positioning at the futures reopen.