Meter Point Administration Number

An MPAN is commonly separated into two sections: the core and the top line data. The core is the final 13 digits and is the unique identifier. The top line 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, with supplementary data on the first line. Only the last digit on the bottom row is the check digit. Profile Class (PC) 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 where: Half-hourly data is recorded by the meter and collected by an onsite download, or by remote communication methods such as GSM, SMS, GPRS or telephone line.: Continue as currently for MPANs with a Profile Class of ‘02’ or ‘04’ or populate with ‘00’ for any MPANs that do not have a Profile Class Meter Time Switch Code (MTC) The MTC is a three-digit code that reflects the various registers a meter may have, such as a single rate, day/night split, or a seasonal time of day. When the Metering System is migrated into the Marketwide Half-Hourly Settlement (MHHS) arrangements, the following applies: Populate from the SSC Id valid set for Traditional Meters or Populate with ‘0000’ for any MPANs for which the SSC Id is not applicable Line Loss Factor Class (LLFC) The Line Loss Factor Class or LLFC is an alphanumeric code 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. They effectively carry electricity from the National Grid to the exit points (each having a unique MPAN and a possibility of several meters) where the customers are. The owner of the distribution network charges electricity suppliers for carrying the electricity in their network. Their DNO licensed regions are the same geographic areas as the former nationalised electricity boards. == MPAN state ==

The supply identified by the MPAN can be in one of four states: disconnected, de-energised, live, and new. • Disconnected: The service cable has been removed and the MPAN will not be reused. • De-energised: The service cable is in place, but the fuse has been removed. The meter remains connected to the distribution network, but no electricity can be used. • Live: Both the service cable and the fuse are in place. The supply is fully operational. • New: A new MPAN has been generated, however, the top line (supplementary data consisting of the Profile Class and Meter Time-Switch Code) is not yet complete. The service cable may or may not be installed. These terms are by no means standardised. For example, a disconnected supply might be referred to as a 'dead' supply. == Export MPANs ==

The vast majority of MPANs are import MPANs, where energy is being consumed. However, if a supply exports to the distribution network, then an export MPAN can be issued. If a supply both imports and exports, then both an import MPAN and export MPAN are issued. Microgeneration Formerly, export MPANs required a half-hourly compliant meter to be installed. Since 2003, it has been possible for microgeneration projects with a capacity of 30 kW or below to have a non-half-hourly meter to measure export back into the distribution network. Uptake was slow, with the first microgeneration export MPAN being issued in June 2005. Some suppliers may not bother to register the export MPAN in MPAS as the revenue is so small. Following the closure of the feed-in tariffs, in January 2020 Ofgem introduced the Smart Export Guarantee (SEG) arrangements, where an export MPAN is allocated to allow a supplier to pay a customer for export of low-carbon energy. Export capacity over 30 kW is required to be half-hourly metered. As part of the Marketwide Half Hourly Arrangements (MHHS), all export consumption will be required to be registered and settled on a half-hourly basis. == Metered Supply Point ==

The Metered Supply Point (MSP) is the point at which the meter measuring a customer's consumption is located. It is thus also the point at which either the distribution network operator's supply, or the building network operator's lateral cable, terminates and the customer's equipment begins. In order to firmly establish a supply's MSP, the MPAN needs to be associated with a meter serial number. Although it is common for an MPAN to be associated with one meter serial number, in some cases there is a many-to-many relationship. For example, one meter could be associated with both an import and an export MPAN, or one MPAN could be measured by three separate meters. == Metering Code of Practice ==

It is possible for small predictable supplies to be unmetered. Examples are streetlights, traffic signals, signs, bollards, telephone kiosks, CCTV and advertising displays. For an item of equipment to be connected to the distribution network via an unmetered connection, its consumption should typically not exceed 500 watts and it should operate in a predictable manner, with no provision for it to be manually turned on/off at the end user's request. Generally the equipment would either be in operation and taking a supply of electricity 24 hours a day, or be controlled by a photocell, as is often the case for streetlights. It is the customer's responsibility to maintain an accurate and up-to-date inventory of unmetered supplies, and to inform the UMSO (UnMetered Supplies Operator) of all changes to the connected equipment within one month of the change. Larger local authorities generally have unmetered supplies with total demand over 100kW and are required to trade their unmetered energy on a half-hourly basis. To do so, they employ a meter administrator who will use daily data from a photo-electric control unit (PECU) array which is then used to calculate the energy consumption. A PECU array is a device that holds a representative number of the photocells that authority uses on their streetlights or traffic signals. By trading energy as unmetered half-hourly, the authority accurately pays for the energy consumed by their declared unmetered equipment, and because the data is downloaded daily the authority will see their energy invoices change throughout the year in response to the seasonal changes in light levels. As a result of Ofgem's decision to progress with Marketwide Half Hourly Settlement (MHHS), under modification P434 it was agreed that all new unmetered supplies from April 2024 would be half-hourly and existing non half-hourly unmetered supplies would move to half-hourly trading during 2024/25. By October 2025 all non half-hourly MPANs had been transferred to half-hourly. In December 2025, Power Data Associates – acting in the MHHS role of Unmetered Data Service – registered the first MPAN in the new MHHS arrangements. If the equipment is street lighting, the annual hours will change as each photocell is assigned a set number of annual hours which indicate how and when the lights turn on and off. These annual hours are set by Elexon and are not locally agreed with the UMSO by the customer. The DNO make a Distribution Use of System charge on the electricity supplier for the delivery of the electricity to the customer's unmetered equipment. == Standard Settlement Configuration (SSC) ==

Each non-half-hourly supply has a four-digit code called the Standard Settlement Configuration (SSC), which specifies the number of registers a meter has, and the times that each register is recording electricity usage. The times that a register is recording is specified with a five digit code Time Pattern Regime (TPR). For example, a supply with SSC 0943 has two registers with TPRs 00404 and 00405. The 00404 TPR register records from 01:00 to 02:30 and 08:00 to 23:30, and the 00405 register records for the rest of the time. == Meter Point Administration System ==

Each DNO operates a Meter Point Administration System (MPAS) which holds the following information for each MPAN: • Supplier • Data Collector (DC) • Data Aggregator (DA) • Meter Operator (MOP) or Meter Administrator for HH unmetered • Customer • Address of the exit point • Associated MPANs • MPAN state • Profile Class (PC) • Line Loss Factor Class (LLFC) • Meter Time Switch Class (MTC) • GSP Group MPRS is the name of the software package that implements the MPAS system for all DNOs. Since MPRS is used by most DNOs it is often used interchangeably with the term MPAS. == ECOES ==

ECOES (formally the Electricity Central Online Enquiry Service) and now the Electricity Enquiry Service (EES) is a website that allows users and authorised industry parties to search for supply details (past and present) using such things as the 13-digit MPAN bottom line number, the meter serial number or the postcode. The database has details relating to the supply including the full address, meter details, the current energisation status and also the appointed parties (i.e. the supplier, distributor, MOP, DC and DA). The site is populated from information sent from the Supplier Meter Registration Service (SMRS) regarding the metering system. Only non-domestic users (with two valid MPANs that are not Profile Class 1 or 2) can register to access this service. == Check digit modulus ==

Check digit The final digit in the MPAN is the check digit, and validates the previous 12 (the core) using a modulus 11 test. The check digit is calculated thus: • Multiply the first digit by 3 • Multiply the second digit by the next prime number (5) • Repeat this for each digit (missing 11 out on the list of prime numbers for the purposes of this algorithm) • Add up all these products • The check digit is the sum modulo 11 modulo 10. == See also ==