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SylWin1

In April 2015, TenneT commissioned SylWin1, currently the longest offshore grid connection in the world. SylWin1 connects three wind farms 70 kilometres off the coast of Sylt to the mainland.


Location
Schleswig-Holstein, Nordsee
Type
Offshore
Category
offshore
Status
finished
Tags
  • SylWin1
SylWin alpha

About the project

205 kilometers long and 864 megawatts strong direct current grid connection system

SylWin1

With SylWin1 with an output of 864 megawatts (MW), the wind farms can feed large quantities of wind power into the German power grid via a high-voltage direct current connection (HVDC). To transport the energy generated by the wind turbines to the onshore converter station in Büttel, a distance of 205 kilometers must be bridged: 160 kilometers of submarine cable and 45 kilometers of land cable. The submarine cable route in the coastal sea and the land cable run parallel to the route for the HelWin1 project, thus reducing the impact on nature and the environment. SylWin1 is one of the large-scale offshore grid connections and can supply more than one million households with clean wind energy.

Connecting concept

The electricity generated at sea is collected in the wind farm's own transformer station. From there the energy is transported to TenneT’s offshore converter platform via a 155 kilovolts three-phase alternating current (AC) cables. The conversion of AC to direct current (DC) takes place in the offshore converter station. The electricity is then transported by subsea and underground cable to the corresponding land station. Here, the electricity is converted back into AC and fed into the TenneT extra-high voltage grid.

Impressions

  • SylWin alpha Jacket Installation

    SylWin alpha Jacket Installation

  • SylWin alpha Loadout

    SylWin alpha Loadout

  • SylWin alpha Installation

    SylWin alpha Installation

  • SylWin alpha Installation

    SylWin alpha Installation

  • SylWin alpha

    SylWin alpha

  • SylWin alpha

    SylWin alpha

  • SylWin alpha

    SylWin alpha

  • SylWin alpha

    SylWin alpha

Contacts

Tim Dampmann

Tim Dampmann

Spokesperson - Projekt Offshore Communication

Further information