Guidance

In-service testing group 1 and 2 report

Report on the details required for in-service testing (IST) of gas and electricity meters.

• From: Office for Product Safety and Standards
• Published: 10 January 2008

Applies to England, Scotland and Wales

Documents

Report on the details required for in-service testing of gas and electricity meters

PDF, 385 KB, 28 pages

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Details

The Industry Metering Advisory Group (IMAG), sponsored by ELEXON and Ofgem, set up the in-service testing (IST) and post-Measuring Instruments Directive (MID) expert group (IST 1), to develop proposals for the in-service accuracy monitoring of MID approved domestic type gas and electricity meters. A further expert group (IST 2) was subsequently established to develop additional proposals to ensure the other legislative requirements aside from meter accuracy were also covered.

The combined proposals of these groups were published in the IST group 1 and 2 report that was accepted by IMAG and Ofgem in 2008. These proposals set out a methodology based on sample testing whereby energy suppliers and asset owners can demonstrate they are fulfilling their statutory obligation to keep their meter populations in proper order for correctly registering the quantities of gas and electricity consumed.

A further expert group (IST 3) was then established to consider the costs of the IST scheme and possible governance arrangements. Its findings were published in the IST group 3 report in 2009, and a consultation on the governance options was subsequently published.

The Office for Product Safety and Standards is currently responsible for the metrological performance of gas and electricity meters and for the governance of the IST scheme.

Contact

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

Gas and Electricity Metering Team: IST
Office for Product Safety and Standards
Stanton Avenue
Teddington
Middlesex
TW11 0JZ

Reception: 020 8943 7272

Published 10 January 2008