P412 Assessment Procedure Consultation Reverts to 'TBC' as Elexon Timetable Update Confirms Downstream 2027 Dates Unchanged

Elexon's updated P412 modification page confirms the proposal remains in the Assessment Procedure phase following Workgroup Meeting 6 (held 25 November 2025), but the previously stated Assessment Procedure Consultation window is no longer shown with specific dates—the current published timetable lists this consultation, along with Workgroup Meetings 7, 8 and 9, as 'TBC' rather than the 31 March–31 April 2026 range cited earlier. Downstream milestones remain unchanged and reconfirmed: Present Assessment Report to Panel (8 May 2027), Report Phase Consultation (12 May–12 June 2027), Present Draft Modification Report to Panel (10 July 2027), and Issue Final Modification Report to Authority (14 July 2027). Authority Approval and Implementation Date remain TBC. The source also details the full extension history granted by the BSC Panel (six-month April 2021, nine-month October 2021, six-month July 2022, nine-month January 2023, twelve-month July 2024, and 21-month July 2025 extensions).

The reversion of the Assessment Procedure Consultation date to 'TBC' removes a near-term scheduling anchor for the process, introducing additional uncertainty about whether the mid-2027 Authority submission target will hold, even though the later-stage report and consultation dates remain fixed. For non-BM Balancing Services providers, this prolongs the period during which imbalance pricing exposure for non-delivery is not yet codified, delaying alignment with Clean Energy Package non-discriminatory balancing settlement requirements and maintaining current asymmetries in cost allocation versus BM participants.

The shift of the Assessment Procedure Consultation from a stated date range back to 'TBC' is not explicitly explained in the source, but combined with the six prior Panel-granted extensions (cumulatively stretching the Assessment Procedure well beyond its original scope since July 2020), it is reasonable to infer continued difficulty resolving technical or legal aspects of the five candidate solutions, or scheduling dependencies tied to Workgroup Meetings 7–9 which are also unscheduled. This pattern of escalating extension lengths (6, 9, 6, 9, 12, 21 months) suggests the Assessment Procedure has faced recurring complexity rather than a single resolvable blocker, and raises interpretive doubt as to whether the fixed 2027 report-phase dates will themselves prove durable if the preceding consultation and workgroup meetings continue to lack scheduled dates.

GB Balancing and Settlement Code (BSC) Modification Process administered by Elexon; referenced alignment with EU/GB Clean Energy Package-derived requirements

Present Assessment Report to Panel · 8 May 2027

Primary sources