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Codes of Practice

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.

Refer to the table below to download a Code of Practice in PDF format. Go to the bottom of this page for more information about the Technical Assurance of Half Hourly Settlement Metering Systems, the National Measurement Transformer Error Statement and metering dispensations.

Click here for the latest conformed versions of Codes of Practices awaiting implementation.

Refer to the table below to download a Code of Practice in PDF format.

CoPs	Issue	Version	Effective date	Title
1	2	3.00	23/02/2006	The Metering of Circuits with a Rated Capacity Exceeding 100MVA for Settlement Purposes
2	4	3.00	23/02/2006	The Metering of Circuits with a Rated Capacity not exceeding 100 MVA for Settlement Purposes
3	5	5.00	03/11/2005	The Metering of Circuits with a Rated Capacity not exceeding 10 MVA for Settlement Purposes
4	5	4.00	BETTA Effective Date	The Calibration, Testing and Commissioning Requirements of Metering Equipment for Settlement Purposes
5	6	5.00	28/02/2008	The Metering of Energy Transfers with Max Demand of up to (and including) 1MW for Settlement Purposes
6	4	5.00	BETTA Effective Date	The Metering of Energy Imports via Low Voltage Circuits Fused at 100 AMPS or Less per Phase for Settlement Purposes
7	2	4.00	BETTA Effective Date	The Metering of Energy Imports via Low Voltage Circuits Fused at 100 AMPS or Less per Phase for Settlement Purposes
8	1	4.0	23/08/2007	Code of Practice for the Metering of Import Active Energy via Low Voltage Circuits for Non-Half Hourly Settlement Purposes
9	1	3.0	23/08/2007	Code of Practice for the Metering of Import and Export Active Energy via Low Voltage Circuits for Non-Half Hourly Settlement Purposes

Technical Assurance of Half Hourly Settlement Metering Systems

The Technical Assurance Agent (TAA), a BSC Agent, assesses Half Hourly Metering Systems against the Code of Practice, relevant at the time the Metering System was first registered in Settlement. Refer to the Market Guidance section of the website for further information about Technical Assurance of Half Hourly Metering Systems and the Performance Assurance Framework.

Only Half Hourly Metering Systems installed to Codes of Practice 1 to 5 (including the Codes of Practice under the Settlement Agreement for Scotland) and the Alpha Codes of Practice are assessed by the TAA.

National Measurement Transformer Error Statement

The National Measurement Transformer Error Statement (48Kb) is a record of the average errors attributable to specific Measurement Transformer types (Current Transformer and Voltage Transformer) based on sample data. Where it is not possible to obtain the actual errors for Measurement Transformers for SVA Metering Systems complying with Codes of Practice 3 and 5, this list can be used by the Technical Assurance Agent (TAA) to replace the Measurement Transformer Test Certificate.

Licensed Distribution Systems Operators may apply to amend the National Measurement Transformer Error Statement via BSCP515 ‘Licensed Distribution’.

Metering Dispensations

Metering Dispensations against the provisions of the Codes of Practice can be granted by the appropriate Panel Sub-committee. For further information on Panel Sub-committees refer to the BSC Panel and Panel Committees section of the website. Further information about Metering Dispensations can be found on the Metering Dispensation page.