Codes of Practice

Codes of Practice (CoPs) detail the technical requirements for Metering Systems. These versions are not time limited in the same way as other documents.

When Metering Equipment is first registered in Settlement, it must comply with the requirements which are set out in the relevant Code of Practice in place at that time.

Codes of Practice (CoPs)

Code of Practice 1: The Metering of Circuits with a Rated Capacity Exceeding 100MVA for Settlement Purposes

Current Version

Version 9.0, Issue 2   [464.1 Kb]   Effective Date: 23 February 2012

Historical VersionsHistorical Versions

Version 8.0, Issue 2   [287.9 Kb]   Effective Date: 24 June 2010

Version 7.0, Issue 2   [117.0 Kb]   Effective Date: 26 November 2009

Version 6.0, Issue 2   [587.9 Kb]   Effective Date: 20 November 2009

Version 5.0, Issue 2   [533.6 Kb]   Effective Date: 25 June 2009

Version 4.0, Issue 2   [531.9 Kb]   Effective Date: 6 November 2008

Version 3.0, Issue 2   [491.2 Kb]   Effective Date: 23 February 2006

Version 2.0, Issue 1   [449.7 Kb]   Effective Date: 4 April 2005

Version 1.0, Issue 1   [447.4 Kb]   Effective Date: 27 March 2001

Code of Practice 2: The Metering of Circuits with a Rated Capacity not exceeding 100 MVA for Settlement Purposes

Current Version

Version 10.0, Issue 4   [460.7 Kb]   Effective Date: 23 February 2012

Historical VersionsHistorical Versions

Version 9.0, Issue 4   [311.8 Kb]   Effective Date: 24 June 2010

Version 8.0, Issue 4   [113.5 Kb]   Effective Date: 26 November 2009

Version 7.0, Issue 4   [567.4 Kb]   Effective Date: 20 November 2009

Version 6.0, Issue 4   [570.2 Kb]   Effective Date: 5 November 2009

Version 5.0, Issue 4   [564.5 Kb]   Effective Date: 25 June 2009

Version 4.0, Issue 4   [488.8 Kb]   Effective Date: 6 November 2008

Version 3.0, Issue 4   [438.5 Kb]   Effective Date: 23 February 2006

Version 2.0, Issue 3   [466.6 Kb]   Effective Date: 1 April 2005

Version 1.05, Issue 3   [459.3 Kb]   Effective Date: 27 March 2001

Version 1.03, Issue 2   [1.2 Mb]   Effective Date: 1 May 1997

Version 1.0, Issue 1   [1.3 Mb]   Effective Date: 15 April 1993

Code of Practice 3: The Metering of Circuits with a Rated Capacity not Exceeding 10 MVA for Settlement Purposes

Current Version

Version 10.0, Issue 5   [481.4 Kb]   Effective Date: 23 February 2012

Historical VersionsHistorical Versions

Version 9.0, Issue 5   [295.3 Kb]   Effective Date: 26 November 2009

Version 8.0, Issue 5   [676.0 Kb]   Effective Date: 20 November 2009

Version 7.0, Issue 5   [915.3 Kb]   Effective Date: 25 June 2009

Version 6.0, Issue 5   [594.5 Kb]   Effective Date: 6 November 2008

Version 5.0, Issue 5   [530.4 Kb]   Effective Date: 3 November 2005

Version 4.0, Issue 5   [488.3 Kb]   Effective Date: 1 April 2005

Version 3.0, Issue 5   [266.9 Kb]   Effective Date: 27 March 2001

Version 2.05, Issue 4   [1.6 Mb]   Effective Date: 31 October 1998

Version 2.03, Issue 3   [300.4 Kb]   Effective Date: 1 May 1997

Version 2.0, Issue 2   [1.2 Mb]   Effective Date: 8 September 1995

Version 1.0, Issue 1   [1.4 Mb]   Effective Date: 15 April 1993

Code of Practice 4: The Calibration, Testing and Commissioning Requirements of Metering Equipment for Settlement Purposes

Current Version

Version 8.0, Issue 6   [172.8 Kb]   Effective Date: 8 December 2009

Historical VersionsHistorical Versions

Version 7.0, Issue 6   [622.1 Kb]   Effective Date: 5 November 2009

Version 6.0, Issue 6   [599.5 Kb]   Effective Date: 26 February 2009

Version 5.0, Issue 6   [600.1 Kb]   Effective Date: 6 November 2008

Version 4.0, Issue 5   [417.7 Kb]   Effective Date: 1 April 2005

Version 3.0, Issue 5   [400.1 Kb]   Effective Date: 27 March 2001

Version 2.0, Issue 4   [1.3 Mb]   Effective Date: 8 June 1995

Version 1.11, Issue 3   [1.3 Mb]   Effective Date: 26 July 1994

Version 1.0, Issue 2   [1.4 Mb]   Effective Date: 15 April 1993

Version 1.0, Issue 1   [748.9 Kb]   Effective Date: 19 March 1992

Code of Practice 5: The Metering of Energy Transfers with Max Demand of up to (and including) 1MW for Settlement Purposes

Current Version

Version 11.0, Issue 6   [143.7 Kb]   Effective Date: 23 February 2012

Historical VersionsHistorical Versions

Version 10.0, Issue 6   [135.7 Kb]   Effective Date: 25 February 2010

Version 9.0, Issue 6   [681.6 Kb]   Effective Date: 26 November 2009

Version 8.0, Issue 6   [542.6 Kb]   Effective Date: 20 November 2009

Version 7.0, Issue 6   [534.6 Kb]   Effective Date: 25 June 2009

Version 6.0, Issue 6   [504.9 Kb]   Effective Date: 6 November 2008

Version 5.0, Issue 6   [513.6 Kb]   Effective Date: 28 February 2008

Version 4.0, Issue 6   [484.8 Kb]   Effective Date: 3 November 2005

Version 3.0, Issue 6   [501.7 Kb]   Effective Date: 1 April 2005

Version 1.06, Issue 4   [1.3 Mb]   Effective Date: 6 November 2002

Version 2.0, Issue 6   [496.9 Kb]   Effective Date: 27 March 2001

Version 1.12, Issue 5   [1.5 Mb]   Effective Date: 31 October 1998

Version 1.04, Issue 3   [1.2 Mb]   Effective Date: 20 March 1996

Version 1.03, Issue 2   [1.3 Mb]   Effective Date: 13 September 1994

Version 1.0, Issue 1   [1.2 Mb]   Effective Date: 4 December 1992

Code of Practice 6: The Metering of Energy Imports via Low Voltage Circuits Fused at 100 AMPS or Less per Phase for Settlement Purposes

Current Version

Version 8.0, Issue 4   [152.8 Kb]   Effective Date: 26 November 2009

Historical VersionsHistorical Versions

Version 7.0, Issue 4   [613.3 Kb]   Effective Date: 25 June 2009

Version 6.0, Issue 4   [537.6 Kb]   Effective Date: 6 November 2008

Version 5.0, Issue 4   [549.9 Kb]   Effective Date: 1 April 2005

Version 4.2, Issue 4   [550.9 Kb]   Effective Date: 27 March 2001

Version 4.1, Issue 3   [3.6 Mb]   Effective Date: 22 January 1998

Version 3.1, Issue 2   [3.3 Mb]   Effective Date: 18 November 1996

Version 3.0, Issue 1   [3.5 Mb]   Effective Date: 29 January 1996

Code of Practice 7: The Metering of Energy Imports via Low Voltage Circuits Fused at 100 AMPS or Less per Phase for Settlement Purposes

Current Version

Version 6.0, Issue 2   [130.9 Kb]   Effective Date: 26 November 2009

Historical VersionsHistorical Versions

Version 5.0, Issue 2   [525.4 Kb]   Effective Date: 25 June 2009

Version 4.0, Issue 2   [519.8 Kb]   Effective Date: 1 April 2005

Version 3.10, Issue 2   [496.2 Kb]   Effective Date: 27 March 2001

Version 3.0, Issue 1   [2.7 Mb]   Effective Date: 13 February 1996

Code of Practice 8: The Metering of Import Active Energy via Low Voltage Circuits for Non-Half Hourly Settlement Purposes

Current Version

Version 6.0, Issue 1   [101.8 Kb]   Effective Date: 26 November 2009

Historical VersionsHistorical Versions

Version 5.0, Issue 1   [496.6 Kb]   Effective Date: 26 February 2009

Version 4.0, Issue 1   [469.1 Kb]   Effective Date: 23 August 2007

Version 3.0, Issue 1   [466.2 Kb]   Effective Date: 3 November 2005

Version 2.0, Issue 1   [462.3 Kb]   Effective Date: 1 April 2005

Version 1.0, Issue 1   [463.8 Kb]   Effective Date: 1 April 2003

Code of Practice 9: The Metering of Import and Export Active Energy via Low Voltage Circuits for Non-Half Hourly Settlement Purposes

Current Version

Version 6.0, Issue 1   [312.2 Kb]   Effective Date: 24 February 2011

Historical VersionsHistorical Versions

Version 5.0, Issue 1   [127.8 Kb]   Effective Date: 26 November 2009

Version 4.0, Issue 1   [521.7 Kb]   Effective Date: 26 February 2009

Version 3.0, Issue 1   [501.8 Kb]   Effective Date: 23 August 2007

Version 2.0, Issue 1   [492.4 Kb]   Effective Date: 1 April 2005

Version 1.0, Issue 1   [491.8 Kb]   Effective Date: 1 April 2004

Code of Practice 10: Metering of Energy via Low Voltage Circuits for Settlement Purposes

Current Version

Version 6.0, Issue 2   [211.0 Kb]   Effective Date: 25 February 2010

Historical VersionsHistorical Versions

Version 5.0, Issue 2   [173.8 Kb]   Effective Date: 26 November 2009

Version 4.0, Issue 2   [391.8 Kb]   Effective Date: 20 November 2009

Version 3.0, Issue 2   [387.3 Kb]   Effective Date: 5 November 2009

Version 2.0, Issue 2   [395.0 Kb]   Effective Date: 25 June 2009

Version 1.0, Issue 1   [376.4 Kb]   Effective Date: 26 February 2009

Alpha CoPs

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CoP A: For the Metering of Electricity Transfers between National Grid Company plc and Public Electricity Suppliers using the National Interim Metering Scheme[7.5 Mb]   Effective Date: 30 March 1990

CoP B: For the Metering of Electricity Transfers between National Grid Company plc and Public Electricity Suppliers using the National Metering System at commercial boundaries (known as the "Final Metering Scheme")[8.6 Mb]   Effective Date: 30 March 1990

CoP C: For the Metering of Electricity Transfers between Public Electricity Suppliers at Voltage Levels below 132kv (to apply after the Final Metering Scheme date)[7.4 Mb]   Effective Date: 30 March 1990

CoP D: For the Metering of Electricity Transfers between National Grid Company plc and Generating Companies using the National Interim Metering Scheme[7.4 Mb]   Effective Date: 30 March 1990

CoP E: For the Metering of Electricity Transfers between National Grid Company plc and Generating Companies using the National Final Metering Scheme[7.2 Mb]   

CoP F: For the Metering of Electricity Transfers between Embedded Generators and Public Electricity Suppliers[7.2 Mb]   Effective Date: 30 March 1990

CoP G: For the Metering Second Tier Supplies of 1MW and Above[6.2 Mb]   Effective Date: 30 March 1990

CoP H: For the Metering of Electricity Transfers between National Grid Company plc and Externally Interconnected Parties over Alternating Current Interconnections using the National Interim Metering Scheme[6.1 Mb]   Effective Date: 30 March 1990

CoP I: For the Metering of Electricity Transfers between National Grid Company plc and Externally Interconnected Parties over direct Current Interconnections, using the National Interim Metering Scheme[4.7 Mb]   Effective Date: 30 March 1990

CoP J: For the Metering of Electricity Transfers between National Grid Company plc and Externally Interconnected Parties over Alternating Current Interconnections using the National Final Metering Scheme[5.8 Mb]   Effective Date: 30 March 1990

CoP K1: For the Metering of Electricity Transfers between National Grid Company plc and Existing Non-Embedded Direct Consumers using the National Metering Scheme at commercial boundaries (known as the "Final Metering Scheme") [6.8 Mb]   Effective Date: 13 June 1991

CoP K2: For the Metering of Electricity Transfers between National Grid Company plc and Non-Embedded Consumers using the National Metering Scheme at commercial boundaries (known as "Final Metering Scheme")[9.4 Mb]   Effective Date: 13 June 1991

Codes of Practice - Settlement Agreement for Scotland

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The Codes of Practice are in relation to the Settlement Agreement for Scotland (“SAS”). ELEXON Limited is not responsible for the creation of the SAS Codes of Practice. While care is taken in the collection and provision of this information, ELEXON Limited shall not be liable for any errors, omissions, misstatements or mistakes in any information or damages resulting from use of this information or action taken in reliance on it.

In accordance with Section L of the BSC; a Metering System shall, as a minimum, comply with the requirements set out in the version of the Code of Practice relevant at the time the Metering System was first registered for Settlement.

Scottish S1 - Code of the Metering of Circuits with a rated capacity exceeding 100 MVA for Allocation purposes  [388.0 Kb]
Version: 22.0   Issue No: 1   Effective Date: 31 October 2005

Scottish S2 - Code of the Metering of Circuits with a rated capacity not exceeding 100 MVA for Allocation purposes  [419.9 Kb]
Version: 22.0   Issue No: 1   Effective Date: 31 October 2005

Scottish S3 - Code of the Metering of Circuits with a rated capacity not exceeding 10 MVA  [418.4 Kb]
Version: 22.0   Issue No: 1   Effective Date: 31 October 2005

Scottish S4 - Code for the calibration, testing and commissioning requirements of Metering Equipment for Allocation purposes  [418.3 Kb]
Version: 22.0   Issue No: 1   Effective Date: 31 October 2005

Scottish S5 - Code for the Metering of Circuits with a rated capacity not exceeding 1MW for Allocation purposes  [207.8 Kb]
Version: 22.0   Issue No: 1   Effective Date: 31 October 2005

Scottish S6 - Code for the Metering of Energy Imports via Low Voltage Circuits at 100 Amps or less per phase for Allocation purposes  [517.3 Kb]
Version: 22.0   Issue No: 1   Effective Date: 31 October 2005

Scottish S7 - Code for the Metering of Energy Imports via Low Voltage Circuits at 100 Amps or less per phase for Allocation purposes  [678.7 Kb]
Version: 22.0   Issue No: 1   Effective Date: 31 October 2005

Scottish S8 - Code of the Metering of Import Active Energy via Low Voltage Circuits for Non Half Hourly Allocation purposes  [399.6 Kb]
Version: 22.0   Issue No: 1   Effective Date: 31 October 2005