The supply number is typically 21 digits long, and can be found on your electricity bill. If you cannot find your S number, you should contact your current electricity supplier, who will be able to help you.
To allow us to obtain the best selection of tariffs for your business it
is important that you input as much information as you can.
The information in this section relates to the SUPPLY address and not the
billing address if this is different.
If you have your Meter Point Administration Number (MPAN) and/or your meter
serial number please do include these.