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CONTENTS

  • FOREWORD
  • 1 SCOPE
  • 2 REFERENCES
  • 3 DEFINITIONS AND INTERPRETATIONS
    • 3.1 100kW Metering System *
    • 3.2 Accredited Laboratory ‡
    • 3.3 Active Energy *
    • 3.4 Active Power *
    • 3.5 Actual Metering at the Asset Point ‡
    • 3.6 Affected Party ‡
    • 3.7 Apparatus *
    • 3.8 Apparent Energy ‡
    • 3.9 Apparent Power ‡
    • 3.10 Asset ‡
    • 3.11 Asset Differencing ‡
    • 3.12 Asset Export ‡
    • 3.13 Asset Export ID ‡
    • 3.14 Asset Import ‡
    • 3.15 Asset Import ID ‡
    • 3.16 Asset Meter ‡
    • 3.17 Asset Metering Point ‡
    • 3.18 Asset Metering System ‡
    • 3.19 Asset Metering System Number ‡
    • 3.20 Asset Metering Type ‡
    • 3.21 Associated Distribution System *
    • 3.22 Auxiliary Load ‡
    • 3.23 Balancing Service *
    • 3.24 Boundary Point *
    • 3.25 Boundary Point Metering System *
    • 3.26 British Summer Time ‡
    • 3.27 Co-ordinated Universal Time *
    • 3.28 Commissioning ‡
    • 3.29 Compensation ‡
    • 3.30 Data Collector ‡
    • 3.31 Data Retriever Instation ‡
    • 3.32 Defined Metering at the Asset Point ‡
    • 3.33 Demand Period ‡
    • 3.34 Demand Values ‡
    • 3.35 Dependent Load ‡
    • 3.36 Dispatchable Asset ‡
    • 3.37 Distribution Licence *
    • 3.38 Distribution System *
    • 3.39 Electricity *
    • 3.40 Embedded Metering Device ‡
    • 3.41 Equipment Owner *
    • 3.42 Export *
    • 3.43 Generating Unit *
    • 3.44 Grid Code *
    • 3.45 Half Hourly Integral Outstation Meter ‡
    • 3.46 Import *
    • 3.47 Independent Load ‡
    • 3.48 Instation ‡
    • 3.49 Interrogation Unit ‡
    • 3.50 Licensed Distribution System Operator *
    • 3.51 Maximum Demand ‡
    • 3.52 Measured Quantity ‡
    • 3.54 Meter Register ‡
    • 3.55 Metering System Identifier Pair ‡
    • 3.56 National Electricity Transmission System Operator *
    • 3.57 Net Output ‡
    • 3.58 Offshore Transmission System *
    • 3.59 Offshore Transmission System User Assets *
    • 3.60 Outstation ‡
    • 3.61 Overall Accuracy ‡
    • 3.62 Password ‡
    • 3.63 Plant *
    • 3.64 Proving Test ‡
    • 3.65 Rated Measuring Current ‡
    • 3.66 Reactive Energy *
    • 3.67 Reactive Power *
    • 3.68 Retail Energy Code*
    • 3.69 Settlement Instation ‡
    • 3.70 Settlement Period ‡
    • 3.71 Single Line Diagram ‡
    • 3.72 Supplier Meter Registration Service *
    • 3.73 Electricity System Operator (ESO) Licence *
    • 3.74 Transmission System *
    • 3.75 Total System *
  • 4 MEASUREMENT CRITERIA
    • 4.1 Measured Quantities
    • 4.2 Demand Values
  • 5 ACCURACY REQUIREMENTS
    • 5.1 Compensation for Measurement Transformer Error
    • 5.2 Compensation for Power Transformer and/or Line Losses or Inverter Losses or Rectifier Losses
  • 6 METERING EQUIPMENT CRITERIA
    • 6.1 Asset Meters
      • 6.1.1 Half Hourly Integral Outstation Meters (Approved for use under Code of Practice 1, 2, 3, 5 and 10) used as Asset Meters
      • 6.1.2 Asset Meters whose primary purpose is the measurement of Active Power and/or Active Energy that are not approved13 Half Hourly Integral Outstation Meters
      • 6.1.3 Asset Meters whose primary purpose is not the measurement of Active Power and/or Active Energy and are not a Half Hourly Integral Outstation Meter. These Embedded Metering Devices are embedded within equipment used for other purposes.
      • 6.1.4 Facilities
      • 6.1.5 Data Security
    • 6.2 Measurement Transformers
  • 7 TESTING FACILITIES
  • 8 SEALING
  • 9 COMMISSIONING AND PROVING
  • 10 SINGLE LINE DIAGRAM
  • 11 Asset Differencing
  • 12 RECORD KEEPING
    • 12.1 Metering Technical Details for Asset Metering Systems
  • APPENDIX A – DEFINED METERING AT THE ASSET POINT
  • APPENDIX B – IMPORT/EXPORT CONVENTION
  • APPENDIX C – HALF HOURLY INTEGRAL OUTSTATION / SEPARATE OUTSTATION REQUIREMENTS
    • 1. Outstation
    • 1.1 Displays
    • 1.2 Data storage
    • 1.3 Time Keeping
    • 1.4 Monitoring Facilities
    • 1.5 Communications
    • 1.6 Local Interrogation
    • 1.7 Remote Interrogation
  • APPENDIX D – COMMISSIONING REQUIREMENTS
  • APPENDIX E – SINGLE LINE DIAGRAM REQUIREMENTS
  • APPENDIX F – ASSET METERING COMPLEX SITE SUPPLEMENTARY INFORMATION FORM (COP11/FA)

Code of Practice11: Code of Practice for the Metering of Balancing Services Assets for Settlement Purposes V4.0

Effective From Date:27/11/2025
Status:LIVE
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