We base your energy allowances on a variety of factors, including the size and energy efficiency of your home, the number of occupants and the energy efficiency of your appliances. Gas and electricity bills are calculated based on your energy usage and network and wholesale costs.

Energy usage is measured in kilowatt-hours (kWh), also known as 'units.' For example, one kWh can power a 100-watt lightbulb for 10 hours. Typical appliance usage varies, with a fridge-freezer using around 1 kWh in 26 hours, an electric oven using around 2 kWh for 30 minutes of use, and a tumble dryer using around 4.5 kWh in a single cycle.

According to Ofgem, the typical household in Britain uses approximately 2,900 kWh of electricity and 12,000 kWh of gas in a year. Please keep in mind that individual usage may vary based on your specific circumstances.