P462 Adds CEPA Cost-Benefit Analysis Phase-Two Addendum, Timetable Still Unchanged Ahead of November-December 2026 Consultation

Elexon's P462 page now publishes a new 'Cost-Benefit Analysis - Phase two' addendum report and accompanying databook from CEPA, dated October 2026, which CEPA presented to the Workgroup at meeting 19 on 13 October 2026 for stakeholder response. This is incremental to the original April 2026 CEPA CBA report and was not previously documented. All forward timetable dates—Workgroup meeting 20 (27 October 2026), Assessment Phase Consultation (19 November-9 December 2026), Assessment Report to Panel (11 February 2027), Report Phase Consultation (22 February-23 March 2027), Draft Modification Report to Panel (13 May 2027) and Final Modification Report to the Authority (17 May 2027)—remain identical to the previously recorded schedule.

The Phase-two CBA addendum indicates the Workgroup and CEPA identified additional quantitative or qualitative impacts requiring further analysis beyond the original April 2026 CBA, which could refine the evidence base underpinning the eventual Assessment Report and the design of the BSC Section T paragraph 3.11 remedy. Because the downstream consultation and reporting dates have not moved despite this additional analytical work, CfD- and RO-supported generators, NGESO and BSC Parties can continue planning around the unchanged mid-2027 Final Modification Report milestone while anticipating that the Assessment Phase Consultation materials will incorporate this supplementary CBA evidence.

The emergence of a second CBA addendum at this late stage of the Assessment Procedure, after the original CBA was already presented to Panel in February 2026 and finalized in April 2026, suggests that stakeholder or Workgroup feedback during meetings 16-18 (covering solution design, legal text and alternative solutions) surfaced gaps or additional scenarios that warranted further quantification before the Workgroup finalizes its recommendation. That this additional analytical cycle has not triggered a further timetable extension—unlike the two prior extensions totalling 16 months—may indicate the addendum was a relatively contained scope addition rather than a fundamental re-scoping, supporting the inference that the Workgroup is nearing convergence on a stable solution ahead of drafting the Assessment Report.

Balancing and Settlement Code (BSC) Section T 'Settlement and Trading Charges', paragraph 3.11

Workgroup meeting 20 · 27 Oct 2026

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