How much will my next bill be?

To ensure a smooth and reliable expereince while using this, we strongly recommend you use a modern browser, such as Chrome, Firefox or Internet Explorer (version 9 or higher, ideally version 11+).

What can I do?

  • You may already have Chrome, Firefox, or Internet Explorer installed on your computer. We recommend you use one of the browsers. If you don't have any of these, you can download them for free.
  • Talk to your company's IT department, which may be able to provide you with an alternative browser.

Help Centre

How much will my next bill be?

Your bill is calculated by adding together the costs for your energy usage plus any relevant taxes or charges.

Calculating your electricity bill

Your electricity bill is made up of:

  • Electricity usage
  • Standing charges (applicable to Economy 7 customers only)
  • VAT

Electricity usage

To work out the cost of your usage, you’ll need the 'Present Reading' from your last bill (found under ‘Usage Details’) and also a current meter reading.

If you are on Economy 7, you’ll need separate Present Readings and current meter readings for both Day and Night.

If you have a night storage heater on a separate meter, you’ll also need individual readings. 

To calculate the cost for your usage, use the following formula: 

(Current Meter Reading – previous Present Reading) x Unit Rate

You can find your unit rate on your bill.

Standing charges (Economy 7 only)

These are calculated by the number of days in your billing period (usually 30 or 60). You can find your current rate for standing charges on your bill or by looking up your tariff online.


VAT is charged on electricity usage and standing charges (if applicable) at 5%.

Usage and Billing Method