FAQ's about your supply number

The supply number is a unique reference number that identifies the electricity meter installed on your property. It is officially known as the MPAN (Meter Point Administration Number) but is more commonly called the supply or 'S' number.

The full MPAN is 21 digits long and is printed on your electricity bill in a series of small boxes as in the following example.

Profile Type

Every property has a profile type and it indicates to the electricity supplier how electricity will be consumed throughout the day.

From a business point of view there are SEVEN profile types:

The first six are known as non half hourly sites

03 - Non-Domestic Unrestricted
04 - Non-Domestic Economy 7
05 - Non-Domestic Maximum Demand 0-20% Load Factor
06 - Non-Domestic Maximum Demand 20-30% Load Factor
07 - Non-Domestic Maximum Demand 30-40% Load Factor
08 - Non-Domestic Maximum Demand >40% Load Factor

00 - indicates that this is a Half Hourly site which means the meter is read automatically every Half an hour. To obtain a quote for a 'HH' site we will need a copy of the HH data for the last year. This can be obtained by requesting it from your current supplier, they can email this to you in excel format.

Meter / Timeswitch

This number indicates how many registers (meter reads or dials) your electricity meter has and what times they will operate during the day.

Duos / LLF indicator

The Line Loss Factor specifies the expected costs the distribution company will charge the supplier for using the cables and network in your region. It also indicates to the supplier the potential charges due to the loss of energy incurred whilst getting the electricity supply to your meter.

Distribution Identifier

Ranging from 12 to 23 this number identifies the local distribution company for your electricity supply. The distribution company is responsible for the management of the distribution system and electricity wires which transports the electricity to your meter.

10 - Eastern Electricity
11 - East Midlands Electricity
13 - MANWEB
14 - Midlands Electricity
15 - Northern Electricity
16 - NORWEB
17 - Scottish Hydro-Electric
18 - Scottish Power
19 - Seeboard
20 - Southern Electricity
21 - SWALEC
22 - SWEB
23 - Yorkshire Electricity

Unique Reference Number

This is a unique reference number within the distribution area, which identifies the property in your property.

Check Digit

This number is calculated from the distribution ID and meter point ID number to provide a check digit that other systems can use to validate the both numbers.

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