Connection using HVDC technology
A sea-bound cable runs from each wind farm to our platform with a substation. From here, the electricity produced in DC is transformed and transported through the high-voltage grid cabling at sea and on land to the next available input point on land – a substation.

HVDC
High voltage DC transfer (HVDC) is a process for transferring large electrical loads at very high voltages (100 – 1000 kV) over very long distances. The abbreviation DC is often found in this field, meaning “direct current.” For the transfer into the traditional electricity grid, it is necessary to transform the energy and this transformation takes place in substations and switching stations.

Horizontal Direct Drilling / HDD
Horizontal drilling is also called HDD boring (from Horizontal Direct Drilling) and is always used if buildings or special surfaces must be passed under and the earthwork has to be kept to an absolute minimum. This could be, for example, conservation areas as well as rivers or motorways. The bores can be guided down to a centimetre level of precision.

Hollow ducting
Hollow ducting construction means that in the case of a stretch of 1.5 kilometres, 35 hollow ducts are laid into the earth together in the ground of Norderney. Cables for connections to wind parks are drawn through this hollow ducting so that no further construction work needs to take place on Nordeney with the exception of the necessary horizontal boring.

Offshore
The word refers to operations that take place off the coast. In the future, more and more wind parks will be erected “offshore” since the power of the wind over water is significantly stronger, the wind is more constant and the facilities can thus produce more energy.

Repowering
Wind power facilities of the newest generation can yield a power of up to 8 MW. Furthermore, facilities are less disruptive, quieter and more effective. The switch from older facilities to new wind energy plants is called "Repowering."