Renewable Energy: Costs

Lord Swire Excerpts

Thursday 14th November 2024 Lords Chamber

[Lord Swire (Con)]

My Lords, I crave the House’s indulgence for largely lifting the comments I will make from a contribution to a debate we had in February this year. I was going to make a few rather politically pris comments until I discovered that, in February, the Minister who answered was a Conservative Minister. Rereading his answers, I found them as unsatisfactory as some of the things I have heard since.

I congratulate my noble friend Lord Frost on what is a timely debate. I will limit my remarks to a very narrow part of it: the costs of transmitting the renewable energy that we are debating. There is absolutely no consensus on these costs at all.

I do not share the sentiment—although I understand it—expressed by the noble Lord, Lord Rooker, about the “majesty” of a whole new generation of pylons marching across our countryside. In fact, that is when the public will begin to lose their enthusiasm for renewable energy. There are other ways of doing it, but we first need to address some fundamental questions. Why are we locating substations for bringing offshore renewable energy onshore, when countries such as Holland and Belgium are planning vast offshore substations? They are absolutely huge. Why is it current UK policy that, instead of pooling the power from the 18 or so wind farms around the country and having limited interconnectors, the National Grid is offering an individual connection to each offshore wind farm? It is completely unthought through and unnecessary.

On the subject of burying power lines versus not burying them, the technology is ever-changing, and some of the figures that have been bandied about by National Grid and others are simply unrecognisable. The noble Lord, Lord Rooker, is right: we do not build things very well any more. If you look back to the 1850s, when we carried telegraph traffic across the transatlantic cable, we were one of the first to do that, and five years later, Sebastian Ziani de Ferranti designed the first high-voltage underground mains cable, which he used to connect the Grosvenor Gallery to Deptford substation, and which carried 10,000 volts. These were all highly innovative and revolutionary acts of engineering. But we can do the same now; we need to have a debate about the various costs of ploughing in and trenching power lines. The new technologies are there, and we know that the environmental benefits of burying power lines in terms of reducing outages, the effects on the flora and fauna and bird life, and the visual impact as well on our landscapes are there and need to be factored into any cost-based analysis.

There was some question about the cost of burying power lines, particularly in East Anglia, and that is a good example. The National Energy System Operator, which formed part of the former National Grid, maintains, on the power lines which it is proposing to build overland in East Anglia, that if that timeframe was to slip to 2034, an underground cable system would come in £600 million cheaper than using pylons. So, we need an honest debate about the various costs, but I urge anybody who is keen on increasing the amount of renewables transmitted to this country to think very carefully about how we do that if we are to carry the public with us.