Contract Signed For New 2GW Subsea Interconnector

2GW HVDC cable to enable  transfer of Scotland’s renewable power

A contract was signed today between Scottish Power/National Grid, Siemens and cable-maker Prysmian to lay a 420km line from Hunterston to the Wirral.  Current proposals will see  4km of cable put underground at the Scottish end, around 370km of subsea cable laid down the Irish Sea and approximately 40km undergrounded where it comes ashore on the Wirral peninsula.

The 2.2GW  600kV   WesternHVDC Link will be the first subsea cable to use such a high  DC  voltage. This  will keep transmission losses extremely low. The link is expected to come into service in 2016, at which time it will be the longest subsea interconnector of its type in the world. It will open up the potential for the export of Scottish renewable energy by linking to consumers south of the border.

National Grid director Nick Winser said:

“This link will have a vital role of play in meeting both the country’s energy needs and helping to address the problem of climate change. We are investing in an innovative solution, using the most advanced technology. As a result, the benefits for consumers and electricity generators in being able to transport power in the most efficient way will be felt for years to come.”

The chairman of Scottish Power, Ignacio Galán, commented:

“The HVDC link is a major project in the context of a vital upgrading of the UK electricity grid over the coming years, with the electricity grid between Scotland and England already running close to maximum capacity. The additional capacity from this link will provide a significant boost to renewable energy projects that we are developing in Scotland in order to bring clean energy to consumers throughout the country and at the same time help meet carbon reduction targets.”


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