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We consume energy in our homes for a host of uses including heating, hot water, lighting and refrigeration. In total, this results in around 2 tonnes of CO2 emissions per person each year.
The chart on the left below shows how heat is lost from different house types of average size. These range from an old draughty Victorian home to the latest low-carbon Passiv house. The chart on the right shows the energy needed from the home’s heating system to balance the heat losses for each type of house.