According to reports, this deal now represents the largest ethanol-based bioenergy carbon capture and sequestration (BECCS) carbon dioxide removal (CDR) deal ever signed. Under the deal, 750,000 carbon credits will be made available from “Project Spirit,” which is Frontier’s ethanol BECCS initiative. This corn is then harvested and fermented to make ethanol, a process that releases relatively pure CO₂. Ethanol fermentation, it turns out, is attractive for carbon capture because it produces an unusually concentrated CO₂ stream (around 99% in some systems). Not entirely carbon negative “Buyers are looking for durable carbon removal they can trust, at scale,” said Julie Mansfield, Head of Global Buyer Growth, Carbonfuture.