Alstom has held a ground-breaking ceremony for the onshore converter station at Dörpen West site in Germany.

The onshore station is a key part of the 900MW high voltage direct current (HVDC) transmission grid connection to link south-west wind farms of the German North Sea to the onshore transmission grid.

The project is planned for completion by 2017.

TenneT offshore managing director Wilfried Breuer said that DolWin3 is pivotal to offshore wind energy and will contribute significantly to the future of energy supply.

Alstom Grid vice-president for Central & Eastern Europe and Russia Gerhard Seyrling said, "As general contractor, Alstom will build the complete infrastructure to transport offshore wind power via HVDC technology to the onshore grid, with low electric losses. At the same time we are proud to contribute to Germany’s energy transition."

The DolWin3 project is the third connection in the offshore DolWin wind farm cluster in the German North Sea. Using direct current (DC) technology with voltage source converters (VSC), the project will deliver the energy produced at sea through 83km of sea cabling to the mainland.

Subsequently, the wind power will be transported another 79km through an underground cable to the Dörpen West converter station.

The energy produced will be transported through the Dörpen West substation towards the major consumption areas situated in the west and south of Germany.

Image: Alstom begins construction of DolWin3 grid connection project in Germany. Photo: courtesy of Alstom.