Severn Barrage

Lord Dixon-Smith Excerpts

Monday 22nd April 2013 Grand Committee

[Lord Dixon-Smith]

My Lords, one certainty has not been mentioned so far, which is that simply leaving the estuary alone will cost nothing. We have to deal with rising sea levels, and the Severn estuary is highly vulnerable to them. We already have a London barrage, which we know all about, and which will have to be replaced. That problem writ large all the way up the Severn estuary will be a problem not only in Bristol but in every other city anywhere near the estuary, and all landowners will have to face it too. It is not an easy question to answer. This is part of a much wider issue. That is the first thing that we must realise.

Secondly, to answer a point made by my noble friend Lord Cope, intermittency is not an issue. It would be perfectly simple to build some barrages on the east coast where we have some quite large estuaries. The time difference for high water is almost precisely six hours. If barrages are built on both sides of the country, there will be an even flow of electricity into the system. That point needs to be made.

Thirdly, we do not sufficiently consider the energy pattern and requirements caused by our Climate Change Act. By 2050 we shall have had to say goodbye—I say good riddance—to the internal combustion engine. All land transport will have to be driven by some other system. My bet would be on hydrogen, which requires electricity to generate it. Those who say that it cannot be done because there is no hydrogen infrastructure have got it wrong. The hydrogen infrastructure already exists. Wherever you have electricity and water you can make hydrogen. It is actually much more efficient to use that in a vehicle than to use batteries, and there is not quite the waste disposal problem because hydrogen is permanently recycled. The electricity generating requirements as a consequence of that are at least twice as big, if not two and a half times as big, as anything we are considering at present, so we have that implication, too.

That brings us back to the point that we have this enormous potential resource. The question is not whether we can afford not to use it but how best to use it. I am afraid that I am not enough of a technician to know whether this latest proposal is appropriate, and there we have to fall back on my noble friend in the Government because they get all the information.

The other certainty—this is where I will finish—is that this is a resource that we cannot afford to ignore. It may seem harsh to say that this may be more important to the country than the port of Bristol, but when the chips go down in 10, 15, 20 or 30 years’ time, that may be a reality that we all have to face. If it is a choice between future energy supplies for this country and the future of the port of Bristol, I would hate to be in the position of the Government, but it is a decision that would have to be taken.