<p>Electricity bills increased by 8.8% a year on average between 2005 and 2010.</p><p>Average bill changes are calculated as the compound growth over period quoted and take customers paying by standard credit as the typical consumer. Increases are calculated in cash terms.</p><p>Electricity bill estimates are available in DECC's statistical publication, Quarterly Energy Prices. These estimates assume a fixed level of electricity consumption of 3,300 kWh and are also available online in table 2.2.1:</p><p>https://www.gov.uk/government/statistical-data-sets/annual-domestic-energy-price-statistics</p>