DolWin1
OperationalOffshore GridDE800 MW320 kV172.5 km2015
Basic information
8 fieldsAlso Known As
DolWin 1 · DolWin1 HVDC · NOR-2-2
Status
operational
Capacity
800 MW
Owners
Project Company
Type
offshore grid
Transmission Model
TSO Build & Own
Website
Supply Chain (5)
Project Timeline (7)
2015Onss Commissioned
The DolWin1 HVDC offshore grid connection, including the onshore HVDC converter station at Dörpen West/Heede, was commissioned in 2015. This brought into operational service the ±320 kV, 800 MW HVDC Light link transmitting power from the DolWin alpha offshore converter platform via a 75 km subsea cable and 90 km land cable into the German transmission grid.
2015Commercial Operations Full Power
DolWin1 grid connection system commissioned and operational.
2 Jun 2011Cable Supplier Selected
On 2 June 2011, TenneT TSO GmbH awarded Norddeutsche Seekabelwerke (NSW) a major order to supply and install two 13 km, 155 kV AC submarine transmission cables to connect the MEG 1 offshore transformer platform to TenneT’s DolWin alpha converter station about 75 km off the German coast, providing the network link that forms part of the 800 MW DolWin1 grid connection from the offshore wind farms to the Dörpen West converter station.
Date TBDConverter Supplier Selected
Transmission system operator Transpower/TenneT awarded ABB a turnkey HVDC Light contract for the DolWin1 offshore grid connection in the German North Sea, making ABB the supplier of the ±320 kV VSC converter stations, including the DolWin alpha offshore platform and the onshore converter station at Dörpen West, for an 800 MW link connecting the Borkum West II wind farm cluster to the German high-voltage grid.
Date TBDCable Supplier Selected
Under its turnkey HVDC Light contract for DolWin1, ABB was selected to design, manufacture and install the project’s HVDC Light cable system for TenneT, comprising two 75 km submarine cables, two 90 km underground HVDC cables and a 7.5 km underground AC cable linking the DolWin alpha offshore converter platform with the Dörpen-West onshore substation.
Date TBDOnss Commissioned
ABB successfully energised its HVDC Light onshore converter station at the Dörpen West substation, completing the crucial onshore element of TenneT’s DolWin1 offshore transmission project in the German North Sea. This commissioning of the Dörpen West converter station enables the ±320 kV HVDC link from the DolWin alpha offshore converter platform to feed power into the German high-voltage grid.
Date TBDCable Installation Complete
Within the DolWin1 offshore transmission project, completion of the export cable connection from the offshore installations to shore was scheduled to occur during the third quarter (Q3), so that the grid link would be ready in time to transmit power from the 200 MW first phase of Trianel’s Borkum West 2 wind farm.