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EPEX SPOT Switches Day-Ahead Power Prices to 15-Minute Intervals on Oct. 1

Mandated by EU rules, the change is meant to better track variable renewable output for a more stable grid.

Overview

  • Day-ahead auctions move from 24 hourly prices to 96 quarter-hour prices per day under EU Regulation 2017/2195.
  • EPEX SPOT says finer granularity should ease integration of wind and solar and improve demand forecasting.
  • Customers on dynamic tariffs will see prices update up to four times an hour and need a smart meter to participate.
  • Consumer advocates say flexible households with EVs or heat pumps may save, while others face higher short‑term price risk.
  • Suppliers such as Tibber are updating apps and tariff views, and market participants may still submit bids in 60‑minute granularity.