General note on catch-up levies
Starting with the 2012 annual settlement, retroactive settlement by the TSOs with the grid operators on the basis of the actual KWKG levies will no longer apply (see BDEW implementation aid for KWKG 2016 dated 01.06.2018). The difference between the KWKG levies levied in 2018 and the KWKG levies resulting from the 2018 actual settlement will be taken into account when calculating the 2020 KWKG levy in accordance with Section 26a (1) KWKG. This catch-up levy is to be collected by the grid operators from the end consumers and passed on to the transmission system operator responsible for regulation to compensate for the difference remaining from the 2017 annual settlement.