average oil usage per household
These total inefficiencies were 91,400 GWh, i.e. 8.7%, and so the CO2 emissions need to be adjusted by this amount from 0.185 to 0.203 kg / kWh. The average UK annual gas consumption is 16,000 kWh per household [36], but per meter is 18,000 kWh [36] (a larger amount as not every household has a supply of natural gas).