Elexon FMAR consultation notice reconfirmed with no new design or milestone details

The primary source is the same 14 September 2026 Elexon FMAR consultation notice previously captured, restating the same open consultation status, the 9 October 2026 (17:00) response deadline, the 22 September 2026 webinar, the phased rollout scope (Elexon FMAR service, NESO DSI, NESO DFS, one DNO platform and associated DNOs/FSPs), the November 2026 design baseline finalisation target, and the September 2027 go-live target. No incremental design, governance or milestone information beyond what was already reported is present.

Because the consultation scope, deadline and phased implementation plan are unchanged, stakeholders' preparation timelines and the previously identified design-lock (November 2026) and go-live (September 2027) inflection points remain valid without modification, so no reassessment of programme risk or participant obligations is warranted at this time.

This document reads as a duplicate or re-surfaced instance of the original Elexon FMAR consultation notice rather than a new communication. All substantive elements—consultation questions, response mechanics, supporting documents, phased rollout option 4, and the November 2026/September 2027 milestones—match what was already recorded, suggesting no material development has occurred since the original publication and the existing interpretation of FMAR as a foundational registration-infrastructure build with a phased onboarding approach continues to be the best available reading.

Flexibility Market Rules (FMRs) governed by Elexon, alongside proposed legal and governance arrangements for asset registration, migration and data access

FMAR consultation response deadline · 9 Oct 2026

Primary sources