# Supercritical Supercritical operates a carbon removal marketplace that sources, creates, and guarantees supply of permanent carbon dioxide removal credits for corporate buyers. The company vets projects across multiple pathways including biochar, direct air capture, and enhanced weathering, evaluating over 100 dimensions from climate science to delivery risk. Supercritical holds a three-year agreement with Exomad Green for up to 500,000 tonnes of biochar through 2028 and has secured clients including Tide, XTX Markets, Veriff, Multiverse, and IMC. The company was founded by CEO Michelle You and CTO Aaron Randall, who previously built Songkick (acquired by Warner Music Group). Supercritical raised a $13 million Series A in June 2023 led by Lightspeed Venture Partners, with participation from RTP Global, Greencode Ventures, and MMC Ventures. The company operates from London.