Ground-mounted Solar Panels: Alternatives

Kit Malthouse Excerpts

Tuesday 14th April 2026 Westminster Hall

[Sarah Bool (South Northamptonshire) (Con)]

It is a pleasure to serve under your chairmanship, Mr Stringer. We are focusing on the concept of floating solar, which I am entirely behind. One of the drivers for that is the proposal in my constituency for the Green Hill solar farm, which will be enormous. It will be 1,200 hectares of agricultural land: the size—my hon. and gallant Friend the Member for Spelthorne (Lincoln Jopp) will like this reference—of Heathrow airport. It will be dispersed over nine sites, require 31 km of different cabling, and use up 65% of best and most versatile land. The Government say that food security is national security, but such a scheme flies in the face of that message. Even the national policy framework EN-1 says that we must minimise the impact on BMV, yet such a scheme is going before the Secretary of State in the next few months. I really hope that he considers that, because this is not the best way to be utilising our land.

Green Hill solar farm will also have a battery energy storage system, which will be installed right outside a village called Grendon. Grendon already has a 50 MW battery storage site, and another 50 have been approved by the Reform council—I am surprised about that, given its view on battery energy storage, but there we are. However, this solar farm will require a further 500 MW on top. That will be 600 MW of storage outside a beautiful country village. It is completely inappropriate for the size. The developers have probably cited the existing source as their reason. However, this addition will completely change the nature of the villages, and we still have not been able to get an answer to the question, if there is a fire and there is a risk of thermal runaway, what that will mean for the nearby villages? I have been told that they can simply evacuate a village; that is not practical, it is not pragmatic and it does not give our residents any confidence in the scheme that is going forward.

The beauty of floating solar, as my hon. Friend said, is that there will be no land use change, which is one of the most important parts of this. It is also important that there will be no evaporation of the water, which is excellent. One of the objections is the visual impact of solar. The national policy framework EN-1 says that we have to take account of the heritage of an area. This particular solar farm will be around a series of beautiful English countryside villages with rolling hills. The village of Easton Maudit will be surrounded by solar on three sides. That will completely change the nature and experience of the village. Indeed, Sir Christopher Yelverton, a former Speaker of the House—albeit from the 16th century —is buried in one of the fine churches there; I imagine that he would not be delighted by the prospect of this coming on board. There is an important relationship between maintaining the heritage of our areas and the environment that we are in.

[Kit Malthouse (North West Hampshire) (Con)]

My hon. Friend is exactly right, and I share her frustration. In my constituency, there is a large area of protected national landscape, the North Wessex downs national park, which is constantly under threat from these kinds of proposals. Does she share my frustration at the lack of imagination shown in the UK? The A303 and the A34 run through my constituency, and there are tens of miles of embankment that could be used for solar panels. That is the approach they take in Germany, the Netherlands and elsewhere, but we never seem to get over the imagination gap about where we could put these things—floating or whatever—that may not be quite so damaging and intrusive. She probably has parts of the M1 in her constituency, which has endless miles of embankment that could be used for solar panels that could power her constituency and mine without harming any visual amenity whatsoever.

[Sarah Bool]

I entirely agree, and we have been trying to promote that argument. It has unfortunately been claimed that Northamptonshire could become the warehousing capital of the UK, but we should be using the roadsides. We sometimes see airports using the side banks for solar panels. Solar panels should be installed on the covers of petrol stations and on the roofs of warehouses. I know that the last Government were consulting on whether more warehouse space could be used. I know that some people make technical arguments that the roofs are not strong enough and cannot be reinforced, but that is absolute nonsense. We can definitely work to ensure that the roofs are sturdy enough for solar panels.

There is debate about whether it should be the landlord or the tenant who bears the cost of the initial outlay, and about who gets the benefit. All those things are completely surmountable, and we should be able to work on a programme for that going forward. It all goes back to planning, because meaningful requirements could enable solar power generation. I am often concerned that these initiatives end up just being greenwashing and that we are only putting them in place to be able to tick a box. What we want to see is these schemes being meaningfully integrated.