Electricity Grid Upgrades

Debate between John Hayes and Luke Murphy

Tuesday 26th November 2024 Westminster Hall

[Sir John Hayes]

With the insight for which he is known, my hon. Friend has anticipated two of the points that I was going to make. The problem with pylons being so close to SSSIs is that the birds do not know boundaries. Of course, the salt marsh in Lincolnshire matters because, exactly as my hon. Friend said, it is important as a site for geese and duck in particular. To run the pylons so close to that is at best highly contentious and at worse wholly destructive. The offshore grid that my hon. Friend describes can be run further out to sea, which is what we do with cables routinely. If we were able to see the ocean bed around our islands, we would see any number of trunked cables that run through them, which provide vital power and communications infrastructure.

[Luke Murphy (Basingstoke) (Lab)]

There is an interesting discussion about the balance of trade-offs. One of the other considerations is cost, and the cost of undergrounding is multiple times the amount of overhead pylons. The previous Government were not able to demonstrate that they could do it at the same cost, so how does the right hon. Gentleman balance that factor? Does he not think that his constituents, and constituents throughout the country, might consider the loading of those costs on to them unacceptable?

[Sir John Hayes]

There is a big argument to be had about costs because we are planning a project that will last decades—perhaps even longer. When I was the Energy Minister, I was very conscious of the fact that we might be making 100-year decisions. It is very hard to gauge costs over time because of two things. First, there are the ongoing maintenance costs associated with any line that runs above ground, and given the changing climate, it is likely that extreme weather events will become more frequent, and extreme weather events will have an effect on anything above ground. Secondly, the relative costs of underground and overhead cables vary according to the kind of cable laid, as my hon. Friend the Member for Harwich and North Essex (Sir Bernard Jenkin) said; and indeed some of the evidence from other places in Europe and elsewhere suggests that the cost of trunking cables underground is falling, whereas there is no similar reduction in the cost of overhead cables, which, on pylons, have been at the same cost for a very long time indeed.

The final point is about consent. The longer these things take, the more they cost. Certainly in Lincolnshire—and I imagine this is true in Essex, Suffolk and other places—there will be protracted legal challenges to the pylons, whereas, with local support and the support of local authorities like Lincolnshire county council, undergrounding would be a much more straightforward affair. Factoring in those costs is complex, but it needs to happen.