We try and read electricity meters every three months. In those months where a customer's meter is not read, they will be sent an account which is based on the estimated consumption. The estimated consumption is calculated from previous meter readings.

When the meter is read, usually every third month, the total charge for all consumption since the last reading is billed. The total charge for the month in which your meter was read will be the actual metered amount minus any estimated amounts charged for since the meter was last read. 

An estimated amount will also be charged for the period after a meter reading until the billing date, if the date the meter was read is more than a week before the date the account is raised. 

Should you wish to know more about our menu of available tariffs, visit the Current Charges section.