Energy: Maritime Wind Farms

House of Lords written question – answered on 13th December 2011.

Alert me about debates like this

Photo of Lord Dixon-Smith Lord Dixon-Smith Conservative

To ask Her Majesty's Government what is the service life-expectancy in years of the under-sea electric cables used to transmit into the National Grid the electricity generated from maritime wind farms for which they have granted permission.

Photo of Lord Marland Lord Marland The Parliamentary Under-Secretary of State for Energy and Climate Change

Experience of onshore underground cables that have been properly manufactured and installed, then operated within their designed rating, indicates that a life-expectancy of 40 to 60 years and probably more is achievable. It is currently the subject of a number of international research programmes to predict just what additional life-expectancy there may be. Experience with submarine cable is limited compared with onshore underground cables and there is no comparable body of statistical evidence for prediction of life-expectancy. Equally, there is no evidence of premature failure of such installations.

As submarine cable technology is so similar to onshore cable technology there is no reason to predict that life expectancy will be any less than onshore installations for properly designed, installed and operated systems.

Does this answer the above question?

Yes0 people think so

No0 people think not

Would you like to ask a question like this yourself? Use our Freedom of Information site.