MCCG webinar details SDAC/SIDC operational progress: XBID 5.0 corrective measures, 15-min MTU one-year review, fallback robustness workstreams, storage orders consultation outcomes, and IT architecture assessment

The NEMO Committee's 22 October 2026 MCCG webinar documented concrete operational progress across the SDAC/SIDC market coupling landscape: confirmation of SIDC corrective measures (Price Tick Size modification approved, Order Book depth decrease tested with positive KPIs, OCC file deactivation dropped from the CM list after XBID 5.0 improvements), one-year performance statistics for the 15-minute MTU since its 1 October 2025 go-live, a scalability assessment confirming algorithm compliance through 2027-2029, detailed outcomes from the 14 October 2026 PCG workshop on six SDAC fallback-robustness workstreams (orderbook pre-check rollout, nomination deadline relaxation, SIDC-CT as fallback, Core MNA volume allocation and single-reference-price measures), results of the SDAC Storage Orders public consultation (39 responses, adjusted algorithm parameters), confirmation that NEMOs will not amend SDAC product methodology while proposing amendments to the algorithm methodology (now under ACER review), and a new IT infrastructure pain-point assessment (68 issues across governance, resilience, architecture and performance).

These updates collectively determine the operational robustness, performance ceiling and future architecture of Europe's core day-ahead (SDAC) and intraday (SIDC) coupling infrastructure, directly affecting price formation reliability during partial/full decoupling events, algorithm scalability as volumes and bidding zones expand through 2029, and the eventual introduction of storage-specific order types that will shape flexibility participation in day-ahead markets.

This document functions as a governance checkpoint rather than a single design change, but it is analytically significant because it anchors several parallel regulatory and technical tracks to concrete status markers: an ACER decision deadline on the Algorithm Methodology amendment (21 January 2027), a confirmed go-live window for 30-minute IDCZGCT at the NL-DE border (16 November 2026), and a still-tentative Q4 2027-Q1 2028 target for Storage Orders via Euphemia 12.3. The explicit warning that CACM 2.0's entry into force could delay or subsume the Storage Orders regulatory amendment process is a material risk flag for flexibility-asset market access timing. Similarly, the SDAC fallback workstreams (WS1-WS6) show incremental but non-final progress — volume allocation live only in BRM, with most Core MNA NEMOs targeting end-2026, and the overarching corrective-measures threshold document still pending MCSC approval — indicating operational robustness measures remain in implementation rather than completed. The 15-minute MTU one-year data and scalability report provide an empirical performance baseline that will inform future NEMO Tech TF and ACER reviews of algorithm capacity as further bidding zone and continuous-trading expansions occur.

Commission Regulation (EU) 2015/1222 (CACM Regulation), Articles 37(5), 40(3)-(4); Regulation (EU) 2019/942, Article 5(2)(b)

30-minute IDCZGCT go-live at the NL-DE border · 16 Nov 2026

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