How is my bill calculated?

  • You are billed for the units of electricity you use
  • Electricity consumption is measured in kiloWatt hours, or kWh for short
  • One kWh equals one unit of electricity
  • An electrical item rated 1000W switched on for one hour uses 1kWh of energy, or one unit
  • The cost per unit depends on the time you use it and which tariff you are on
  • Unit prices range from 14.50p (incl GST) per unit on General Domestic, to 7.63p (incl GST) on Economy 7 Night Rate
  • Economy 7, Economy 20, Economy 20+ and Comfort Heat Tariffs all offer one or more discounted rates for units used for approved space and water heating during off-peak periods
  • We have to pay more for electricity used at peak load times so it is more expensive for the consumer to use electricity then
  • Your type of meter depends on your tariff and records how many units you use at which rates
  • A Daily Service Charge is added, whether or not electricity is used, to cover administration