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Special measures are used in the event of very large balance sheet deviations. In addition to additional measures and emergency aid for foreign countries, these also include sheddable loads.
The use of an ancillary service product consisting of sheddable loads in real-time serves to directly stabilize the system frequency and is activated in the event of a below threshold frequency of 49.7 Hz. Sheddable loads can be activated either automatically by a frequency relay or manually by a decision of the transmission system operator. Further information can be found at regelleistung.net.
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In special situations, e.g. in the event of very large balance deviations, the transmission system operators (TSOs) use so-called additional measures (e.g. emergency reserve contracts with foreign countries or exchange transactions) to reduce long-lasting balance deviations. The additional operational measures also include emergency assistence for foreign countries.
In addition to the additional measures, the emergency assistence provided to foreign TSOs (as a quality-assured data point from the 20th working day of the following month) is recorded below. In the operational data, emergency assistence for foreign countries and additional measures for Germany are added together and published on a net basis. (A publication of the trading transactions carried out by 50Hertz to maintain the system balance and to compensate for emergency supplies to neighboring TSOs is currently still available on the 50Hertz homepage.)
The emergency assistence for abroad can be a delivery of energy to abroad or the purchase of energy from abroad and can be provided by MRL, for example. From a German perspective, these emergency assistence measures are handled in a balance sheet and financially neutral manner. The energy quantities shown therefore compensate for any balancing power activated for emergency assistence in the LFC Area balances.