Sewage waste in Bristol used to make green gas

The sewage waste of a million people across Bristol is being used to produce energy for the city.
The council owned national energy company, Bristol Energy, is offering its customers biomethane - an environmentally friendly substitute for the fossil fuel natural gas, made from treating local human waste.
Bioresources analyst Charlotte Stamper recently spoke on the BBC about how GENeco are involved.
Footage supplied by the BBC - aired on 24 April