TenneT intends to build several platforms, which will connect wind farms to the onshore grid by HVAC sea cables. The platforms within one area, as part of redundancy requirements, will be connected by means of a 66kV cable. The platforms are to carry high-voltage switching and transformation equipment 220kV as well as auxiliary facilities. Intake power from the wind farms will be 66 kV, export power from the platform will be 220 kV. Each platform is connected to the onshore grid by two three core 220 kV AC sea cable circuits and, if applicable, by single core 220 kV AC land cables. The scope of the intended contracts includes design, engineering, production, delivery and installation of 220kV AC sea cables in order to connect the offshore AC platforms with the respective landstations. The scope may include 220kV AC land cable.