Following the implementation of Issue 93, the CoP4 End of Life Sample Calibration check was introduced for CoP3 and CoP5 Metering Systems. This check is intended to assess the accuracy and long-term performance degradation of older meters, particularly those approaching the end of their expected operational life.
On 16 February 2026, Elexon will initiate the End of Life Sample Calibration process in accordance with the BSC CoP4 – Code of Practice for the calibration, testing and commissioning requirements of Metering Equipment for Settlement purposes.
Meter Operator Agents (MOAs) will be contacted directly by Elexon with details of the applicable requirements and the meters in scope for the 2026/27 cycle. The notification email will also confirm the date by which Elexon requires submission of the annual report.