What happens to my green and orange bags if they are collected in the same lorry?

The waste is collected together in the same lorry before being taken to a biomethanation centre, where it is processed in the same way as when food waste arrives in a single stream. The valorisation, which produces compost and biogas, is identical, so mixing the waste in no way alters the environmental benefits. Did you know that 20 tonnes of food waste is enough to supply a family with electricity for a year? The residual material is used to produce compost, which is used as a natural fertiliser for agriculture.