Implementation of Modification P403

Modification P403 ‘BSC Arrangements in the event that the TERRE Market is suspended by National Grid ESO’ will be implemented on 28 May 2020.

It will provide Market Participants with clarity on how the BSC arrangements will operate in the event that the Project TERRE (Trans-European Replacement Reserves Exchange) market arrangements are suspended.

We have amended BSC Sections G, Q, X Annex X-1 and BSCP201.

These amended versions will be available from the morning of 28 May in the BSC and Codes section of the website.


There is no impact on the BSC Systems and any Parties.

If you have any queries, please contact the BSC Service Desk.

Background information

For more information about the changes visit the P403 webpage.

Background information is available on the Project TERRE hub page.


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