Main Metering



ENMAT not only provides sub meteringsolutions and systems integration with BMS (Building Management Systems), we also provide many Main metering (MPAN and MPR) solutions and Integration with your Energy Supplier and or appointed Data Collector/Aggregation.

Monitoring your main Electricity and or Gas supply is an important step to understand your site’s total electricity/gas usage.

In the UK electricity system, a data collector (DC) is responsible for determining the electricity consumption of supplies.


For half-hourly metered supplies, the HHDC retrieves the energy consumption data from the meter and makes any necessary estimates. The HH data is a history of the supply’s consumption for each half-hour.



For non-half-hourly metered supplies, the NHHDC determines the consumption by calculating the advance (the difference between the last two meter reads, this is annualised to produce an annual advance (AA), this being the data the supplier will pay on).

The NHHDC is also responsible determining the estimated annual consumption (EAC), which is a forecast for a year ahead. The EAC is initially provided by the supplier, and thereafter forecast based on actual meter readings.

Data from the DC (EAC/ AA’s) is provided to the non half hourly data aggregator, which aggregates the individual values provided into a single figure split in a number of ways e.g. geographically, geographically & supplier or supplier. This aggregated data is then provided to the Central Systems, maintained by Elexon, to determine the value of energy which has been used by suppliers so that they are able to settle with the distribution network which generated the energy. The process is known as balancing and settlement and falls under the balancing and settlement code (BSC).


Letter of Authority

In order for us to obtain your data feeds from your main half hourly meter we would need a letter of authority from you.

You can download the Letter of Authority Document by clicking here for PDF version.

Simply e-mail back your acceptance of this offer to and the signed letter of authority letter.


Contact ENMAT today to discuss your monitoring needs

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