BorWin2
OperationalOffshore GridDE800 MW300 kV211.4 km2015
Basic information
8 fieldsAlso Known As
BorWin 2 · BorWin beta
Status
operational
Capacity
800 MW
Project Company
Type
offshore grid
Transmission Model
TSO Build & Own
Website
Supply Chain (3)
Project Timeline (8)
2015Commercial Operations Full Power
BorWin2 grid connection system commissioned and operational.
Sept 2014System Testing
BorWin beta converter platform initial tests fed electricity into the grid in early September 2014. Platform installed April 2014, trial operation began November 2014.
29 Apr 2014Construction Other
By 29 April 2014, Siemens had installed the BorWin2 offshore platform in the North Sea northwest of Borkum, positioning and jacking up the 12,000‑ton self-righting BorWin beta converter platform onto its pre-installed substructure about 39 meters deep. The platform, built by Nordic Yards and equipped with Siemens HVDC technology, is a central offshore substation element of the 800 MW BorWin2 grid link between the connected wind farms and the onshore converter station at Diele.
4 Jun 2012Offshore Site Preparation
Offshore Marine Management GmbH, operating from Cuxport’s terminal at Cuxhaven with the multipurpose vessel Bourbon Enterprise, carried out seabed route clearance and preparation works for the BorWin2 offshore grid connection. On a series of seven trips, the vessel cleaned and prepared the seabed and installed concrete mattresses along the cable route between the Veja Mate and Global Tech I wind farms and the mainland, establishing the prepared corridor needed for subsequent export cable installation in the German North Sea.
3 May 2011Construction Other
On 3 May 2011, Nordic Yards commenced production of the BorWin beta offshore transformer platform for the BorWin2 grid connection at its Warnemünde shipyard, beginning fabrication with the first steel blank cut. Up to 450 workers were to be involved in building this first self-righting offshore power converter platform in Germany, which will transmit 800 MW of power from the Veja Mate and Global Tech I wind farms to shore as part of TenneT’s BorWin2 HVDC system.
2010Cable Supplier Selected
Prysmian Group was contracted by TenneT as the cable supplier for the BorWin2 offshore grid connection, with Prysmian’s company presentation listing "BorWin2" as a key project for customer TenneT over the period 2010–2013 with a contract value of about €250 million. Subsequent Prysmian materials describe BorWin2 among the company’s installed offshore HVDC and 66 kV submarine cable reference projects in Germany, confirming Prysmian’s role in supplying the submarine and land cable system for this transmission link.
Jul 2010Substation Supplier Selected
In July 2010, Siemens Energy, acting as general contractor for TenneT’s BorWin2 offshore HVDC grid connection, commissioned Nordic Yards to construct the BorWin beta offshore transformer platform. The self-righting platform, to be installed about 125 km off the German coast, forms a key substation/converter module within the BorWin2 transmission system that will transmit up to 800 MW from the Veja Mate and Global Tech I offshore wind farms to the mainland.
Jul 2010Converter Supplier Selected
TenneT awarded the BorWin2 800 MW HVDC offshore grid connection contract to a Siemens / Prysmian consortium. Siemens responsible for the HVDC Plus converter technology for the offshore and onshore converter stations.