Siemens has won a contract from TenneT Holding for the BorWin3 wind grid connection, with a transmission capacity of 900MW, in the North Sea.

North Sea grid

For the implementation of the contract Siemens will team up with Petrofac.

Siemens will deliver high-voltage equipment for the grid access system as well as a complete onland station, while Petrofac will be responsible for the construction and installation of the offshore platform.

The German company will supply high-voltage direct current (HVDC) transmission technology while consortium partner Petrofac handles construction and installation of the platform.

Siemens will also be responsible for the construction of the complete HVDC converter station on land.

Additionally, Siemens will provide two power transformers per station at a rating of about 670 MVA, as well as the air and gas insulated high-voltage switchgear equipment.

Siemens power transmission division CEO Karlheinz Springer said, "BorWin3 will supply nearly one million German households with clean electricity from wind power. We can now fully apply our broad experience gained in our first four pioneer projects in the North Sea to this project."

The project is scheduled to complete in 2019.

Supply and placing of the cables has been tendered separately by Tennet.

Image: Platform for HelWin1 North Sea grid connection already installed at sea. Photo: courtesy of Siemens.