U.S. Bank purchases carbon removal credits from Carba's Minnesota biochar operation

U.S. Bank has acquired carbon removal credits from biochar developer Carba, marking its first direct investment in durable carbon removal technology. Carba deployed a proprietary molten salt pyrolysis reactor at a Minnesota landfill to convert urban waste biomass into biochar. This on-site processing reduces transportation costs and aims for carbon durability exceeding 1,000 years at under $100 per metric tonne. The agreement expands Carba's client base, which includes a prior five-year purchase contract with Microsoft.

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