It is possible that congestion indirectly affects the aFRR need, but congestion is not the cause of the aFRR.

If there is congestion in the electricity network, this can lead to an increased demand for electricity on other parts of the network. This in turn can lead to unexpected changes in the frequency of the electricity network, as more power is needed to meet this demand. In this case, the aFRR can be used to restore balance to the network.

However, congestion is not the only factor that can lead to a change in network frequency. Other factors, such as unexpected power plant outages or unforeseen weather conditions, can also lead to frequency disruption and the need for aFRR. It is therefore important to emphasize that aFRR is primarily intended to maintain the frequency of the network, regardless of the cause of the disruption.

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