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Modification: P358

Roll over of BSC Seasonal GCDC

Proposer: SSE

Current Phase: Implemented

Category: Credit

Implementation Date: 22 February 2018


The Modification proposes to amend BSC Section K to allow ELEXON to carry over BSC Seasonal GC/DC.

This Modification seeks to remove the requirement to default values to zero if none is declared, and recognise the existing working practice where ELEXON carries over BSC seasonal GC/DCs where no declaration is received. This Modification is explicitly intended so there is no challenge process to a rolled-over value. Instead, if Parties want to they can re-submit their DC if dissatisfied with the rollover value in accordance with existing mid-Season re-declaration processes (Section K3.4.2A).


P358 was raised by SSE Ltd on 6 September 2017. The Initial Written Assessment was presented to the BSC Panel at its meeting on 14 September 2017. P358 was issued for Report Phase Consultation with responses due by 5pm 13 October 2017. P358 was approved by the BSC Panel and Ofgem on 9 November 2017 and 13 December 2017, respectively. P358 was implemented on 22 February 2018 as part of the February 2018 BSC Release.


P358 Authority Decision Letter  [363.3 Kb]
Document Date: 13 December 2017

P358 Final Modification Report  [594.0 Kb]
Document Date: 10 November 2017

P358 - Report Phase Consultation  [554.4 Kb]
Document Date: 25 September 2017

P358 Proposal Form  [480.6 Kb]
Document Date: 6 September 2017