Danish transmission systems operator Energinet.dk and the UK-based National Grid Viking Link Ltd (NGVL) are looking for providers of high voltage direct current (HVDC) cables and converters for the Viking Link Interconnector.
The Viking Link is a proposed 1,400 MW HVDC electricity link between the British and Danish transmission systems, connecting at Bicker Fen substation in Lincolnshire and Revsing substation in southern Jutland, Denmark.
The project is being jointly developed by NGVL and Energinet.dk.
The project will involve the construction of a converter station in each country and the installation of subsea and underground cables between each converter station and underground cables between the converter station and substation in each country.
The new invitation to tender concerns the award of one or more contracts for the detailed design, engineering, procurement, manufacture, installation, construction, testing, commissioning, spares provision, operational handover and maintenance of the inteconnector.
The overall value of the contracts is EUR 1.3 billion and the project period is 114 months.
The procurement is structured in seven lots.
The first lot is for 55 kilometres of HVDC MIND underground cables to be installed in the UK. The second lot is for 230 kilometres of subsea HVDC MIND cables to be installed off the UK.
The lot three covers 195 kilometres of HVDC MIND subsea cables for the Dutch and the German part of the North Sea.
The lot four is reserved for 210 kilometres of HVDC MIND subsea cable to be installed in the Danish part of the North Sea, and the lot five is for 76 kilometres of HVDC MIND underground cable which will make connection at the substation Revsing.
The lot six is for 768 kilometres of underground and submarine HVDC XLPE cables, and the lot seven is for HVDC VSC converters for the UK and Denmark.
The tender will remain open until 17 February, 2017.