Research and analysis

Electricity meter determination report from 2003 to 2014

Analysis of electricity meter determinations.

Applies to England, Scotland and Wales


Electricity meter determination report from 2003 to 2014

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Around 200 electricity meters are submitted for determination each year and the National Measurement and Regulation Office (NMRO) publish the results of these tests on a regular basis. NMRO does not use this data for any formal purposes other than to initiate action with meter manufacturers and owners when meter examiners identify systematic faults with certain meter types.

The information within these reports is not intended to represent the overall accuracy of electricity meters in Great Britain and the following points should be considered:

  • the meters tested were initiated by the consumer or the supplier in circumstances where it was suspected that the meter is measuring erroneously – the sample is not representative of the whole meter population
  • only a relatively small sample of meters are tested annually and this needs to be considered against the overall population of electricity meters in Great Britain that is in excess of 27 million

It is important that these factors are considered in context with the information provided.


If you wish to speak to a member of staff please contact:

Electricity metering team

Utilities Business Team
National Measurement and Regulation Office
Stanton Avenue


Reception 020 8943 7272

Published 29 August 2011
Last updated 17 August 2015 + show all updates
  1. Updated to include 2014 data

  2. The National Measurement Office has publish a new report detailing the findings of electricity meter determinations performed between 1 January 2003 and 31 December 2013.

  3. Electricity meter determination report has been updated to include figures from 2012.

  4. First published.