Energy use by air conditioning in UK.

Air conditioning to cool buildings may account for almost 10% of UK electricity consumption.
According to a recent study by the Building Research Establishment (BRE) commissioned by the UK Department of Business Energy and Industrial Strategy, air conditioning to cool buildings may account for almost 10% of UK electricity consumption.

The study found that 65% of office space and 30% of retail space in the UK is equipped with air conditioning. Cooling in offices typically uses around 40 kWh/m2 per year.

The researchers found that part of the reason for such an high ratio is that air conditioning is often used even when buildings are unoccupied, for example in the evenings and at weekends. They also found that the number of heat waves in the UK has increased significantly since the 1960s.