In our previous article we gave you some information on what MPANs are and the MPAN Core which you will use mostly when referring to your electricity supplies. Here, we’re going to give you some more detail on what we can learn about your site from the top row of your MPAN.
The top line has historically been broken into three segments:
- 00: a two-digit number that identifies the meter’s Profile Class, this was originally used to designate the approximate pattern of usage expected by the meter.
- 111: the middle segment displays the Meter Time Switch Code (MTC), which tells suppliers whether the supply is single-rate, day/night (Economy 7 or 10), or seasonal time of day.
- 222: this displays the Line Loss Factor Class (LLFC), which is used by the supplier to help calculate distribution and transmission charges.
MPANs have changed a little recently due to something called the Market-wide Half-Hourly Settlement (MHHS). It moves all electricity meters to 30-minute settlement intervals. The MHHS design removed the use of both Profile Classes (except for legacy non-smart meters) and MTCs. The legacy 3-digit Meter Timeswitch Code (MTC) is replaced by the 4-digit Standard Settlement Configuration (SSC). The other fields keep their position and length; the 3-character LLFC keeps its value but is renamed the DUoS Tariff ID.
Now the top line remains broken into these new three segments, together these give the settlement class of the MPAN for billing to the supplier for the consumer’s usage:
- 00: a two digit number that typically will read 00 as most metering is now designated HH, however 02 and 04 profile classes have been retained.
- 1111: Standard Settlement Configuration (SSC). Non-half-hourly supplies are now being designated as HH and switched to smart metering. NHH supplies however have four-digit codes called the Standard Settlement Configuration, which specifies the number of registers a meter has, and the times that each register is recording electricity usage. This area of the MPAN will read 0000 for any MPANs where SSC Id is not applicable.
- 222: DUoS Tariff Id (DUoS), this is a direct replacement of the Line Loss Factor Class, and identifies the DUoS charge category applicable for the MPAN.
So from the MPAN top line, your consultant or supplier can identify what DUoS charges you should be receiving and whether your physical meter was HH coded or time switched non half-hourly.
