Immediate activation of mFRR means activation of mFRR Balancing Energy at a time that does not coincide with the scheduled periodic performances of the mFRR Process in 15-minute cycles.

The HETS Operator is entitled to proceed with an immediate activation of mFRR Balancing Energy and to send Dispatch Instructions to Balancing Service Entities in order to balance the HETS or to address technical constraints at any point in time between the scheduled resolutions of mFRR Processes.

To this end, the HETS Operator may, for example, execute the mFRR Process within the 15-minute cycle and/or use two merit order lists already created based on the submitted Balancing Energy Bid prices, one for the upward direction and one for the downward direction.

When two merit order lists are used in accordance with the provisions of paragraph 3 of this Article, the volume of mFRR Balancing Energy that can be supplied by each Balancing Service Entity shall be calculated on the basis of the volume of its Balancing Energy Offers and its technical characteristics. The HETS Operator is entitled to select and activate the mFRR Balancing Energy sequentially in accordance with the respective merit order list for the corresponding direction (upward or downward).

Balancing Energy Offers that are related to immediate activation of mFRR are taken into account when calculating the mFRR Energy Price for the specific mFRR Time Unit within the framework of Balancing Market Settlement.

In the event that the HETS Operator issues Dispatch Instructions that differ from the result of the mFRR resolution, the HETS Operator shall submit a report to the RAEWW justifying the choice of Balancing Service Entities selected to cover the imbalance in the HETS. The report shall be submitted for each month, within one (1) month from the end of the month to which it refers.