The preventive or curative measures include redispatch and counter trading (§ 13 paragraph 1 EnWG). The volumes indicated for the measures under § 13 paragraph 1 EnWG are defined as the sum of all capacity increases as well as the sum of all capacity reductions in the time interval.
Note: the volumes given are based on power plant schedules. In this context, redispatch volumes are determined as the sum of the energy exchange between 50Hertz and the power plants within the control area. Stock exchange transactions to balance the redispatch balancing group and redispatch measures with domestic or foreign transmission system operators are not included.