Carbon Credit Buyers InternationalCarbon Credit Buyers Sponsors Buying Number of VCUs: The VCU number must be superior then 0. Please contact us by e-mail for these amounts. Reference annual GHG emissions per ton per capita; various sources including World Bank.)10Quebec20Canada16USA7Europe3Asie1Africa1 VCU = 1 tonne of GHG reduction Can’t see the image below? Click here to offset your carbon emissions.