MID approved electricity meters

MID Approved

The Measuring Instruments Directive (MID) is a European Directive (2004/22/EC) harmonising the requirements of ten different measuring instrument types, including active electrical energy meters.  A MID approved instrument will have passed specific conformity assessment procedures and have MID markings which allow the instrument to be used in any EU Member State. The aim of the Directive is to create a single market in measuring instruments for the benefit of manufacturers and, ultimately, consumers across Europe.

In the UK, the MID is implemented by Regulations for the different instrument types and these are available to download from the following website: http://www.legislation.gov.uk/uksi 

Measuring instruments that comply with the MID bear:

  • the CE mark
  • a capital letter ‘M’ and the last two digits of the year of its affixing, surrounded by a rectangle
  • the identification number of the notified body involved in conformity assessment

The Measuring Instruments Directive was published on 30 April 2004 in the Official Journal of the EU, but not applied until after 30 October 2006 and there will be a 10-year transition period. National implementations of the new legislation are currently in the works.


ENMAT has a range of MID approved meters to suit your needs.

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