Most of the energy used in UK houses is gas and electricity. In each case, this will be indicated in your utility bill in terms of kilowatt hours (kWh).
To calculate your carbon dioxide emissions, multiply your annual consumption of electricity by a ‘kilogram co-efficient’ of 0.45, your annual gas consumption by 0.19 and heating oil by 2.975.
Then divide each total by the number of people in the household to reveal your individual emissions.
First, estimate the annual distance you travel by each mode of transport, discounting car journeys as a passenger. Then multiply each annual total with the appropriate ‘kilogram co-efficient’ below.
Petrol car (as driver) x 0.2
Diesel car (as driver) x 0.14
Rail (Intercity) x 0.11
Rail (other services) x 0.16
Rail (underground) x 0.07
Bus (London) x 0.09
Bus (outside London) x 0.17
Express Coach x 0.08