General Information Converter/Collector Name DolWin1 Converter correct
Status Operational correct
Latitude 53.997 ° correct
Longitude 6.421 ° correct
Comments The DolWin1 project involves a 167-km long, 800mw DC link by TenneT. The onshore grid connection point is a new converter station in Dörpen West, Emsland which makes the overland route 90km which is slightly longer than the BorWin1 and BorWin2 projects.

DolWin1 will get an additional 250m cable connecting it to the DolWin3 platform by mid-2017. The cable will be attached to each platform by a steel bridge about 30m in length.
Foundation Foundation Type Grounded: Jacket correct
Foundation Weight 4100 t correct
Foundation Comments 6 piles with a diameter of 2.4m The jacket dimensions were 44x42x48 (LxWxH) correct
Topside Topside Weight 9300 t correct
Topside Dimensions (LxWxH) 62x42x38 m correct
Helideck Yes correct
Electrical Specifications Power 800 MW correct
DC Voltage Level 320 kV correct
AC Voltage Level 155 kV correct
Number of Transformers 2 correct
Other Equipment The helideck platform has a diameter of 22m and the MTOW is 12.8 tonnes. correct
Transmission Cable Cable Name DolWin (1) Alpha to UW Dörpen/West correct
Number of Transmission Cables 2 correct
Minimum Cable Length 75 km correct
Depth Buried correct
Nominal Voltage 320 kV correct
Conductor Type Cu correct
Section correct
Insulation correct
Cost of the Transmission Cable correct
Cost Description correct
Comments on the Transmission Cable 75km of offshore cable come ashore on the island of Nordeney (via Gate II), before crossing the island and Wadden Sea in subterranean bores. A further 92km continue onshore from Hilgenriedersiel to the onshore converter station at Dörpen West. Total length of the on and offshore HVDC cable is 167km. Distances break down as follows: EEZ; 42km, 12nm limit to Norderney; 27km, Norderney: 1.5km, Wadden Sea; 5.2km; Land 92km. The onshore cables are 0.4-0.5m apart in a 5m wide trench (0.7m at base). correct

Call +44 (0)1502 307 037 for more information

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