Meter Numbers Explained - MPAN & MPRN

12/03/2025


We’re here to help you make sense of your bills and how your meter numbers help.

Energy meter numbers help identify your gas and electricity supply. These reference numbers play and important role in billing for both home and business energy users.

 

There are two types of meter numbers: one for gas and one for electricity. You can find these numbers on your physical meter or on your paper bills.

 

What Do The Meter Numbers Mean?

  • Meter Point Administration Number (MPAN) - This number refers to your electricity meter and helps ensure you’re billed correctly for your usage. It is sometimes referred to as an “S” number.

  • Meter Point Reference Number (MPRN) - refers to your gas meter. This helps ensure your gas bill is accurate and you're being billed for the correct usage. It can also be refered to as an 'M' number. 

 

MPAN Number Explained 

You can find your unique 21-digit MPAN number on your meter or bill; it typically begins with an ‘S’ for ‘supply number.’ The process is the same for business electricity customers. 

 

The MPAN number is usually located at the bottom of the first page or on the reverse side of your bill. Be aware that other numbers, such as your account number or customer reference number, may appear on your bill, so it’s essential not to confuse them with your MPAN.

 

If you switch energy suppliers, your MPAN will remain the same since this number is unique and linked to the property.

 

MPRN Number Explained 

Your MPRN, or Meter Point Reference Number, is associated with your gas supply. Known as your 'M number,' it generally consists of six to ten digits. 

 

Similar to your MPAN, you can find your MPRN on your utility bill, but it is also available on your gas meter. The process is the same for business gas customers. 

 

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Why Do I Need An Energy Meter Number? 

 

Your meter number identifies the supply to your premises and helps with billing. While the likelihood of needing to know what all the numbers mean is slim, here’s a breakdown:

  • The first two numbers refer to your home’s profile class and give the supplier an indication of your typical electricity use. These numbers can range from 00 to 08.

 

  • The next three numbers are your Meter Time Switch Code (MTC), which indicates the number of registers your electricity meter has and what times they’ll operate throughout the day.

 

  • The third set of numbers is known as the Line Loss Factor (LFF) and indicates the distribution Use of System (DUoS) charges that the distribution network will charge your supplier for using the cables in your area.

 

  • The next two numbers are the Distribution ID which is used to identify the regional distribution company for your electricity supply.

 

  • The long, eight-digit number is the Meter Point ID, which is unique within your distribution area and is used to identify the metering point.

 

  • Finally, the three-digit sum at the end is the Check Digit, which is calculated from the Distribution ID and Meter Point ID numbers.

 

 

  

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Meter Number FAQs

  • How do I find my meter numbers without my bill?

    You will need to contact your energy supplier to find out your MPAN and MPRN numbers. If you're unsure who your supplier is, you will need to contact your Local Network Operator to find out. 

  • Will my meter number change when I get a new one?

    No - your MPAN and MPRN numbers will remain the same even if you change your meter. 

    The only thing that changes is the meter serial number. This is different to the meter numbers. 

  • What is a meter serial number?

    A meter serial number (MSN) is different from your MPAN and MPRN numbers. The MSN is a combination of letters and numbers that identify the actual meter.

     

    The MPAN and MPRN numbers are assigned to the property to identify the supply. 

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