Source - EC 15-Min MTU Day-Ahead Market (2025)
Title: EU Electricity Trading in the Day-Ahead Markets Becomes More Dynamic Publisher: European Commission, Directorate-General for Energy URL: https://energy.ec.europa.eu/news/eu-electricity-trading-day-ahead-markets-becomes-more-dynamic-2025-10-01_en Published: October 1, 2025 Type: Official Commission news announcement
Summary
Official EC confirmation of the SDAC 15-minute market time unit (MTU) go-live. Brief (one page) but authoritative as the primary Commission statement on the transition.
Key facts
- Go-live date: September 30, 2025
- Scope: Single Day-Ahead Coupling (SDAC) — all EU day-ahead electricity markets, including Sweden SE1–SE4
- Intraday: Single Intraday Coupling (SIDC) also completed 15-minute MTU on September 30, 2025 (with the addition of Greek bidding zone borders)
- Effect: Electricity prices now calculated every 15 minutes (96 price points/day vs 24 previously), reflecting more granular supply-demand dynamics
- Legal basis: Electricity Regulation (EU) 2019/943
- Rationale stated: Better integration of variable renewable energy (VRE); more efficient grid balancing; reduced imbalances; expected lower costs for consumers and industry
Significance for flexibility
The transition creates 96 price signals per day instead of 24. For consumers with smart meters and smart controls (heat pumps, EV chargers, batteries), the 15-minute interval allows more precise optimization. The Commission frames this as supporting implicit demand response.
The transition does not change metering requirements for end consumers — smart meters already log 15-minute data in Sweden and most of the EU. The market price granularity change is the relevant shift.
Relevance to wiki
Resolves the open data gap in Demand Response and Nord Pool on 15-minute pricing. Confirms that the Electricity Regulation (already in wiki) mandated this change. See also Electricity Market Design Reform 2024 for broader context.