What is...
kWh A kWh or kilowatt-hour is the unit of energy used to calculate your bill for both gas and electricity usage.
Calorific value
This is a measure of the energy contained in the gas, it represents the amount of heat released as the gas is burned.
Conversion factor
The conversion factor for temperature and pressure is required to make it easier for us to calculate the value of the gas that we supply. On domestic gas bills the factor makes allowances for gas pressure and the fact that gas expands as it gets warm and contracts when it is cold.
Cubic meter (m3)
One unit of gas represents the amount of gas needed to fill a cubic metre. If you’d like to know how we convert this into kilowatt-hours you can see this
online.
Hundreds of cubic feet (hcf)
Imperial meters measure the gas consumed by your home in hundreds of
cubic feet. One unit represents the amount of gas needed to fill 100 cubic feet. If you’d like to know how we convert this into kilowatt- hours you can see this
online.
First and Next units (previously called Primary and Secondary units)
Bills are calculated using two different pricing bands, primary and secondary. The threshold at which you switch from primary to secondary prices depends on the tariff. To calculate the Primary (First) unit price the threshold limit is divided by 365 days and multiplied by the number of days the bill is for, everything after that is charged at the Secondary (Next) rate.
MPAN (Supply Number)
This is your unique electricity Meter Point Administration Number, and is used to identify the property and electricity meter. You may also hear it called a Supply number or S-Number. Your MPAN will be shown on your electricity bill and is not on the actual meter itself.
MPR (Meter Point Reference)
This is your unique gas meter point reference number, and is used to identify your gas supply. Your MPR will be shown on your gas bill and is not on the meter itself.
