All relevant clauses in contracts and general terms and conditions of TSOs, DSOs and SGUs relating to system operation shall comply with the requirements of this Regulation. To that effect, those contracts and general terms and conditions shall be modified accordingly.

This Regulation shall enter into force on the twentieth day following that of its publication in the Official Journal of the European Union.

F1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .