Circularity Fuels

Hydrocarbon fuels such as methane or renewable diesel are extremely efficient carriers of energy, but it’s increas­ingly expensive to extract and refine them, and burning them obviously adds carbon to the atmosphere. The atmosphere itself, however, offers an effectively endless source of carbon. Circularity Fuels has built an adsorption-based reactor, powered by renewable electricity, that takes CO2 out of the air or any dilute source of CO2 and turns it into drop-in ready hydro­car­bons. Already, the company is making high-purity methane at lower cost than purified fossil methane and selling it to companies that are growing diamond, graphene, and other advanced carbon materials. Eventually, Circularity plans to sell its methane, renewable diesel, and other hydro­car­bons as a carbon-neutral, drop-in replacement for existing fuels.