How to Read Your Electricity Invoice

Invoice guide

Click on the image for a sample invoice

To calculate the number of Billed Units (electricity consumed), deduct the present meter read from the previous one
Multiply the Billed Units by their respective price
Non-half-hourly meters may have a number of different readings. The time periods and prices these refer to are stated in your contract. These meter readings may be actual, customer or estimate as indicated on your invoice
The Total (Consumption) is the consumption for all readings for the period of use. The total cost associated with the Total Consumption is also stated
Multiply the Billed Units of Standing Charge by price (if applicable)
Multiply the Billed Units of Capacity Charge by price (if applicable)
Add together Capacity Charge and Standing Charge to get the total other charges
Apply CCL at a rate of 0.485p/kWh unless any reductions apply
VAT applied at 20.0% unless exemptions apply
The sum of these calculations amounts to the Total Electricity Sales

Billed units are calculated for the period of use and they are measured in kWh
These units are then multiplied by their respective prices
Half-hourly meters may have up to six consumption periods. The time periods and prices these refer to are stated in your contract
The Total (Consumption) is the consumption for all consumption periods for the period of use. The total cost associated with the Total Consumption is also stated
Multiply the Billed Units of Standing Charge by Price (if applicable)
Multiply the Billed Units of Capacity Charge by Price (if applicable)
Add together Capacity Charge and Standing Charge to get total other charges (if applicable). Please note that there may be charges specific to your individual contract
Apply CCL at a rate of 0.485/kWh unless any reductions apply
VAT is added at 20.0% unless any exemptions apply
The sum of these calculations amounts to the Total Electricity Sales

A	A after a meter reading indicates actual read taken by the data collector or agents working on its behalf
E	E after a meter reading indicates an estimated read
C	C after a meter reading indicates a read given by the customer
S	S after a meter reading indicates a read that has been agreed between two gas or electricity companies when the supply has transferred from one to the other
Kilowatt Hours (kWh)	This is the unit of measure for energy consumed
Supply Number	The supply number starts with the letter S, followed by a 21 digit number which uniquely identifies your metering point
MPAN number	The electricity supply number is also referred to as the Meter Point Administration Number (MPAN) and is printed on each bill you receive. The MPAN number is 13 digits and is the second line of the supply number You will see your supply number on the left hand side of your bill - with non-half hourly meters the first two digits will start with either 01, 02, 03, 04, 05, 06, 07 or 08
Climate Change Levy (CCL)	This is a government energy tax on Industrial and Commercial consumption, subject to VAT To calculate CCL multiply Total Consumption by 0.485p/kWh (reductions may be applicable)
Fossil Fuel Levy (FFL)	Government tax on industrial and commercial electricity sales revenue (to fund renewable energy schemes)To calculate FFL multiply the sum of Total Consumption and total other charges amounts by 0.3% for England & Wales or 0.8% for Scotland