Automatic Frequency Restoration Reserve (aFRR)

The automatic frequency restoration reserve is activated automatically to eliminate the control area imbalance. The average values that occurred within a quarter of an hour in the APG control area are shown on this page. They are normally published within minutes after each quarter of an hour. An update for most data items is provided at a later point in time.




Further information about the imbalance netting cooperations (INC, IGCC) shown can be found here.

A detailed description of the values in the table can be found here.

Please consider the new calculation method of setpoint-based required energy volumes (scaled nominal values) starting with 01 May 2020.

The information about decoupling of the aFRR-Cooperation Germany/Austria displayed in the visualization starts with 1 January 2017.

For historical data please use the file from the download area.


Note: Cross-zonal capacity, which has been allocated for the exchange of balancing capacity, allows for a minimum amount of exchange. Since additional neighbouring countries joined the International Grid Control Cooperation (IGCC) it is also possible to use available ATCs on these borders for the aFRR-cooperation between Austria and Germany. After TERNA, MAVIR and SEPS joined the IGCC, the border to Switzerland has been re-activated on May 20, 2020, with the borders to the Czech Republic and Italy following on May 27 and June 3, respectively. According to the requirements of the automatic Frequency Restoration Reserves Implementation Framework (aFRR IF) and of the Imbalance Netting Implementation Framework (IN IF) any limits on these borders have expired as of June 17, allowing Imbalance Netting as well as the aFRR-cooperation between Austria and Germany to use the entire ATC remaining after the Intraday-Market. I.e. the amounts of aFRR-exchanges shown below (e.g. SCR+ DE for AT) do not only affect the border between Austria and Germany and may hence exceed the ATC between Austria and Germany. The columns “maximum exchangeable power AT->DE” and “maximum exchangeable power DE->AT” henceforth also contain the sum of all ATCs on the Austrian borders. The ATCs are also published on our website: