Floating Solar Panels

Ben Obese-Jecty Excerpts

Thursday 26th June 2025 Commons Chamber

[Lincoln Jopp]

I do, indeed. I was not 100% sure which Minister would respond to this debate, so I have had only the briefest of moments to look at the lake in Burgess park in the Minister’s Peckham constituency to see whether that may be suitable for floating solar.

We have talked about the opportunity costs and about doubling efficiency. I am sure hon. Members will have worked this out, but the 2,000 acres of reservoir in my Spelthorne constituency are raised, which means no one can see the top of them unless they are flying off to Torremolinos or landing from Dubai. Therefore, there would be none of the visual vandalism that people object to so much, and the carpeting of our beautiful country in solar panels would go away too.

[Ben Obese-Jecty (Huntingdon) (Con)]

I must declare that I share an office with my hon. and gallant Friend, so I know an awful lot about floating solar because he is so passionate about it. As a result, I would point out that Grafham water in my Huntingdon constituency is the eighth largest reservoir in the country by volume and the third biggest by area. It is also a raised reservoir, but, ironically, it is surrounded by solar panels to generate electricity that we can see from the ground. He obviously agrees with me that it would be a fantastic idea to use that enormous stretch of water for some floating solar.

[Lincoln Jopp]

I am grateful to my hon. and gallant Friend for joining this merry band of evangelists for floating solar, and for seeking to get in on the ground floor with the inclusion of the reservoir in his constituency. Within minutes, he is immediately seeing the opportunity, and I congratulate him on that.

--- Later in debate ---

[The Parliamentary Under-Secretary of State for Energy Security and Net Zero (Miatta Fahnbulleh)]

I thank the hon. and gallant Member for Spelthorne (Lincoln Jopp) for securing a debate on this important issue and for prosecuting his case for floating solar with such flourish. I also wish to put on the record that the Minister for Energy, my hon. Friend the Member for Rutherglen (Michael Shanks), was desperate to be here and is very sorry that he cannot be, but I am glad that I am able to stand here in his place. I am also glad that the hon. and gallant Gentleman was able to make his speech today, as I know he was not able to intervene in the recent solar debate.

Let me start by saying that I absolutely agree. The Government are very clear that, like the hon. and gallant Gentleman, we believe there is an exciting role for floating solar. It is a new technology, but one that we think has huge potential. Developers around the world started to come forward with utility-scale proposals in the past decade, and several large projects have been constructed in recent years, including installations with the capacity to generate hundreds of megawatts of electricity, which have mainly been in China.

The hon. and gallant Gentleman has very effectively set out the upsides of floating solar, so I will not reiterate them. However, I want to put on the record that we agree, and that we recognise many of those upsides.

I will say a little about the state of floating solar in the UK today. There has been some deployment of floating solar in the UK. Lightsource led a project on the Queen Elizabeth II reservoir, which is just outside the hon. Gentleman’s constituency, as he mentioned. The project uses 24,000 solar panels to generate around 20% of the site’s electricity needs. It was, at the time of construction, Europe’s largest floating solar installation. There are now other, smaller projects across the country, but the scale is still nascent and very limited.

[Ben Obese-Jecty]

We have already heard about Grafham Water, which is a large reservoir in my constituency. Just to the north of my constituency, in North East Cambridgeshire, we are about to start building the Fens reservoir, which is, as I am sure the Minister is aware, a joint project between Cambridge Water and Anglian Water. It will be 50 million cubic metres, and the development consent order is expected to go in in 2026, with actual construction starting in 2029. Does the Minister agree that this is a fantastic opportunity to try out this nascent technology on a large project, which could generate so much energy in the Cambridgeshire area?

[Miatta Fahnbulleh]

I thank the hon. Gentleman for his intervention. There are many schemes and huge opportunities, and the Government are working with industry to think about what the potential is across the country. New proposals are coming forward, and we are trying to engage with them.

Although we see that there is huge potential, it is also important to put that in the context of some of the challenges we face as we try to grow floating solar. We are trying to do our part to work with industry, so we want to ensure that we deal with some of the obstacles and barriers to the schemes that are coming forward—for example, planning or investment certainty. Floating solar projects can apply to the Government’s flagship contracts for difference scheme, and they do.

I know that one of the arguments in favour of floating solar, which the hon. and gallant Gentleman put forward, and which was reiterated by other hon. Members, is that it will reduce the amount of land that we need to use. Arguments have been made about agricultural land and constraining the amount of ground-mounted solar panels on them. I gently say, however, that if we look at the statistics, we see that only 0.1% of land in the UK is covered by ground-mounted solar at the moment—a minuscule amount. Even with the expansion that we are actively trying to encourage, we are still talking about a fraction of UK land that will only ever be used for ground-mounted solar, so it is important to put that in context.