Meter Point Administration Number

A Meter Point Administration Number, also known as MPAN, Supply Number or S-Number, is a 21-digit reference used in Great Britain to uniquely identify electricity supply points such as individual domestic residences. The gas equivalent is the Meter Point Reference Number. The system was introduced in 1998 in order to provide a competitive environment for the electricity companies, and allows consumers to switch their supplier easily as well as simplifying administration. Although the name suggests that an MPAN refers to a particular meter, an MPAN can have several meters associated with it, or indeed none where it is an unmetered supply. A supply receiving power from the network operator (DNO) has an Import MPAN, while generation and microgeneration projects feeding back into the DNO network are given Export MPANs.

An MPAN is commonly separated into two sections: the core and the supplementary data. The core is the final 13 digits and is the unique identifier. The supplementary data gives information about the characteristics of the supply and is the responsibility of the supplier.

The full MPAN is required to be depicted on electricity bills (the boxes on the top and bottom line are generally unaligned):

The core data is on the second line, the supplementary data on the first.

The first two digits of a full MPAN reflect its profile class.

Profile class 00 supplies are half-hourly (HH) metered, i.e. they record electricity consumption for every half hour of every day, and supplies of the other profile classes are non-half-hourly (NHH) metered. A NHH supply must be upgraded to HH for:

exceeds 100kW.

HH data is recorded by the meter and will be collected usually by either an onsite download, or via a GSM, SMS, GPRS or telephone line.

Domestic NHH import MPANs will always have a profile class of 01 or 02. Domestic NHH export MPANs are allocated a profile class of 08.

The MTC is a 3 digit code that reflects the various registers a meter may have, whether it be a Single Rate, Day Night split, or even a Seasonal Time of Day.

The Line Loss Factor Class or LLFC is used to identify the related Distribution Use of System (DUoS) charges for the MPAN. The figure reflects both the amount of distribution infrastructure used to supply the exit point and the amount of energy lost through heating of cables, transformers, etc.

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