The Meter Point Administration Number (MPAN) is used to identify your property’s electricity supply and a Meter Point Reference Number (MPRN) is used to identify the gas supply for your property. You can usually find these numbers on your energy bill, so in this case you would look for a previous bill from your previous energy supplier.

If these details are recorded incorrectly at any stage in the registration process - even by just one digit - the wrong property’s energy supply can be switched.

MPAN (Metering Point Administration Number)

This number relates to your electricity supply only. It's also known as the "supply number" or "M number".

You can find it on any of your recent electricity bills.

The MPAN has a standard format:

  • The S always appears (it won't ever be another letter).
  • The top row of numbers is always made up of eight digits, separated as shown.
  • The bottom row is always made up of 13 digits, separated as shown.

MPRN (Meter Point Reference Number)

This number relates to your gas supply only. It’s also known as the "supply number" or "M number".

You can usually find it in small print at the bottom of your gas bill. It will look something like this:

Picture of an MPRN reference number from your bill

The MPRN has a standard format – it consists of between six and ten numerical digits only.

Important

Don’t confuse your MPRN with:

  • Your gas supplier account number.
  • The meter serial number printed on the meter itself.

If your MPRN isn’t printed on a recent gas bill or if you’ve just moved into your home and don’t have a current or old gas bill, please call National Grid on 0870 608 1524. They’ll supply your MPRN.