P373: Reversal of P297

Formal title: Reversing the changes relating to Approved Modification P297

Current Status

Initial Written Assessment
Assessment Procedure
Report Phase
With Authority
Awaiting Implementation


National Grid proposes to reverse the changes to the BSC for Approved Modification P297 ‘Receipt and Publication of New and Revised Dynamic Data Items’. The approved changes to the BSC for P297 can be found in the P297 Final Modification Report provided to the Authority in March 2014 and published on the P297 webpage


The P373 Final Modification Report is currently with the Authority for decision.

The Panel considered the Report Phase Consultation responses and the Implementation Approach at its meeting on 8 November 2018 and determined a recommendation to the Authority should be made to approve P373 with an Implementation Date of 5 Working Days following Authority decision.

The Authority determined on 17 October that P373 should not be considered an Urgent Modification Proposal and therefore, the Report Phase Consultation concluded at 5pm Friday 26 October. 

National Grid (Electricity System Operator (ESO)) raised P373 on 4 October 2018 and  requested that it be treated as an Urgent Modification. The BSC Panel recommended to the Authority that Urgent status be granted at its meeting on 11 October 2018. The Panel also determined that P373 should be submitted directly to the Report Phase.

Please note that the ESO has published an open letter on 26 October 2018, regarding the ESO Assessment of Costs and Benefits Associated with Grid Code modification GC0068 and BSC modification P297

Next Events

Ofgem as the Authority will make a decision on whether to approve P373.


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