Storage Orders: a new product to support battery storages participation in the day-ahead market
A new order type, Storage Orders, is being developed for Single Day-Ahead Coupling (SDAC). It aims to simplify trading for electricity storage systems, particularly batteries and pumped-storage hydropower plants.
The new product will allow market participants to submit the technical and economic parameters of their storage systems, such as energy capacity, power limits, efficiency, and charging and discharging costs. The Euphemia algorithm will then determine the buying and selling profile across trading periods while respecting the submitted constraints.
The main benefits will be a simpler order preparation and less reliance on precise price forecasts throughout the day. Optimising purchases and sales together will help participants make better use of storage flexibility and price differences between trading periods. Greater storage participation may also support more efficient use of electricity from renewable sources.
According to the latest information presented at the Market Coupling Consultative Group (MCCG) meeting, the introduction of Storage Orders in SDAC is expected in Q4 2027 – Q1 2028. This timeframe remains subject to confirmation following testing and completion of the necessary regulatory changes. OKTE will keep market participants informed about further developments and the conditions for making the product available in the Slovak day-ahead market.
Further information is available in the presentation from the MCCG meeting held on 22 October 2026, in the Storage Orders section.