Carbon credit prices vary drastically between different offset solutions and the vintage of credit. A nature based solution PIU (pending issuance Unit), varies from £20-£30. Once the unit becomes a verified carbon credit, the price increases towards and beyond £50. Engineered carbon removal prices also vary between offset solutions such as enhanced rock weathering, Direct air carbon capture and Biochar carbon removal. Prices can start at £150 and go up to and beyond £300 per tonne.