This dataset summarizes the amount of energy that should be curtailed in order to obtain the desired reduction at the monitored cross-border line. This amount is not linear and depending on the congestion size, the curtailment cost might be really expensive. This data summarizes the KPI results of analysing the real curtailment requirements when facing different congestions. Two scenarios are considered: In the line between substations GKORIN and G1ARGOS In the line between substations G2PATR31 and GSIMOP31 For each unit of power reduction needed (x-axis) the corresponding curtailment required is presented (y-axis)