Great British Energy Bill

Debate between Baroness Boycott and Lord Alton of Liverpool

Committee stage
Tuesday 3rd December 2024 Lords Chamber

[Lord Alton of Liverpool (CB)]

My Lords, I rise on the final note of the contribution of the noble Earl, Lord Russell, on those amendments to speak to my Amendment 91, which he just mentioned. It is in my name and that of my noble friend Lady Finlay of Llandaff and the noble Lords, Lord Storey and Lord Woodley. I know it enjoys support from all parts of your Lordships’ House. It would insert the following new clause after Clause 7:

“Within six months of a designation under section 1(1) coming into effect, Great British Energy must publish an assessment of the potential use of tidal barrage projects to support decarbonisation of the energy sector”.


That sits comfortably with the other amendments in this group. I strongly support what the noble Lord, Lord Naseby, said about the use of hydrogen, what the noble Earl, Lord Russell, said about heat pumps, and what I think my noble friend Lady Boycott will say about biomass.

I also thank the Minister, the noble Lord, Lord Hunt, with whom I have already had one meeting—he promised that at Second Reading and I am grateful to him for it. It is partly about whether we can reduce reliance on forms of energy that come with a price tag connected to slave labour in places such as Xinjiang. If one is to stop using sources that have a human rights dimension, we have to find alternatives. In a way, that is what these amendments seek to do: to look at what some of the other alternatives may be. I also know that the Minister has kindly agreed to meet with me and the metro mayor for Merseyside, Steve Rotheram, along with his noble friend, the noble Lord, Lord Woodley, in due course, so we can talk further about the Mersey barrage, which I will come back to in the course of my remarks.

The noble Lord, Lord Naseby, talked about security and diversity—very important concepts that have come out in all the previous groups we have talked about. We should make sure that we are not so dependent on any one source that anyone else can then hold us to ransom. I would add to security and diversity the need for more reliance in the United Kingdom on ourselves and a reduction in dependency on countries such as the People’s Republic of China or Russia. I think all of us were horrified to see the dependency that Germany had at the beginning of the war in Ukraine, and we must learn the lessons of that.

Why tidal energy? I am grateful to the House of Lords Library for producing some notes on this for me. However, I have been interested in this issue since the 1980s, when I served in another place on the Environment Select Committee, but also because I founded the Mersey Barrage All-Party Parliamentary Group. This idea had not come out of the blue. In fact, tidal barrages have been around for many years. The first was thought of by the French in 1921. It did not come to pass until 1966, when the La Rance barrage, quite close to Saint-Malo in Brittany, opened. So this is not a fantasy or something out of dystopian fiction; they have been done and here are decades of experience.

Tidal energy could be a crucial pillar for delivering the objectives of the energy Bill. It would strengthen the UK’s renewable energy mix, complement intermittent sources such as wind and solar, drive the green industrial strategy by fostering innovation, create jobs and support regional economic growth. The United Kingdom is uniquely positioned to be a global leader in tidal energy.

We can learn from projects such as the La Rance estuary barrage in France, but we can also learn—I think the noble Lord, Lord Howell, will be particularly interested in this—from the experience of South Korea, where the largest operating tidal power station is based: the Sihwa Lake project, which produces 254 megawatts of energy. It is a 43.8 kilometre artificial lake constructed as a land reclamation project in 1994. It used a 12.7 kilometre seawall at Gyeonggi Bay and, after some false starts, if you look at its history, nevertheless, construction led to 552.7 gigawatts of electricity generated by the tides. I asked what that really means to a layman like me, and I was told that it is the equivalent of 862,000 barrels of oil, or 315,000 tonnes of CO₂, equivalent to the amount produced by 100,000 cars annually. It has 10 water turbine generators, enough to support the domestic needs of a city with a population of about half a million. After some false starts initially, as I said, it led to some very positive developments in the ecosystem there as well.

That neatly takes me to the Mersey barrage, an idea that, as I said, has been around for over 30 years now. There has recently been a new public consultation, which closed last month. I know that when the Metro mayor comes to meet the noble Lord, Lord Hunt of Kings Heath, there will be an opportunity to discuss the findings of that.

None of these things, whatever energy we produce, comes with no downside—we all accept that—but there are surprisingly few downsides to the use of tidal barrages. Merseyside would argue that the green industrial revolution could be started off there, and Britain’s renewable energy coast could be there, on the River Mersey and in the Irish Sea. It would power hundreds of thousands of homes and create many jobs. I visited Cammell Laird a few weeks ago to see the wonderful renaissance that has taken place there, alongside the extraordinary renaissance of the Port of Liverpool; these are big success stories that need to be understood and learned more widely. Listen to what the mayor himself says: “There is a strong strategic case for taking forward a Mersey tidal power project and we are developing detailed plans for how it could be made a reality. I also believe there is a strong moral case for it too—our planet’s future depends on it.”

As people such as the noble Lord, Lord West, will confirm, the Mersey has a huge tidal range—green energy to power every home in the city region for more than 100 years. Surely that is something worth giving serious consideration to. It is predictable, so it complements offshore wind and solar energy; but it is predictable in a way that they are not always. It should be a key part of the diversity that we heard about earlier. It is a well-established technology with minimal decommissioning needs. I would also point the Minister to other experience, not just overseas. The Orbital O2 project in Orkney is the world’s most powerful underwater turbine: 2,000 homes there receive their energy from it, and more than 2,200 tonnes of carbon are cancelled as a result of the work of the project.

Then, of course, there is the Severn barrage project, which has been around a long time and has had many advocates, not least on the Official Opposition Benches over the years. I know that some noble Lords, one of whom cannot be here today, are great supporters of it, as are some of my noble friends. This is an issue that has captivated the party of the noble Lord, Lord Wigley, who is in his place, and others. The idea was dropped back in 2010, but it was resurrected in 2024, with New Civil Engineer reporting that a new independent commission had been established. It estimates that 7% of the United Kingdom’s electricity could be generated, and challenges such as cost, risk and environmental impacts, which have previously halted major barrage projects, are believed to be capable of being overcome by the use of new technologies.

The UK could be in a position to be a global leader. I certainly think this is worthy of exploration, and that is all the amendment commits us to doing. This should not be seen as some sort of science fiction, as some projects undoubtedly appear to be from time to time. It is not unrealistic, and there are already very good examples, which I have cited. It is worth looking at further, and if the Minister cannot support the amendment, I hope he feels that the principle of delving further into the potential of barrages should be part of what Great British Energy seeks to achieve.

[Baroness Boycott (CB)]

My Lords, I very much support what the noble Lord, Lord Alton, and the noble Baroness, Lady Finlay of Llandaff, said about tidal power. I have followed what has happened on the Severn, and it is terrific to see that it is now coming back into play. Tides are probably our most reliable power source in the UK. There will always be a tide, when there might not be some wind.

I support pretty much all the amendments in this group which look at diversifying the sources of energy—all of what the noble Earl, Lord Russell, and the noble Baroness, Lady Grender, said. I shall speak specifically to Amendments 30 and 33, which would exclude biomass from the definition of clean energy, and there are many reasons for this. Over the past few years, it has become completely clear to me and, I think, to many other noble Lords—including the noble Lord, Lord Forsyth, who is not in his place, and who spoke about this issue during a Question of mine a couple of weeks ago—that while biomass is okay on paper, in theory, and on a very small scale in practice, it is not at all okay on the big scale at which we practise it. We cannot go on using it to reach net zero. I do not know whether noble Lords saw the “Dispatches” and “Panorama” programmes; also, an Ofgem investigation has found that biomass energy generators in the UK have “misreported”—that is not my word—the data on where they get their wood from. In other words, it is not waste wood. The idea was that offcuts and waste wood were used and burnt. That in itself was a fallacy, because the burning of wood releases so much carbon, but the story gets worse.

As the Wildlife and Countryside Link put it:

“Bioenergy which burns woody biomass actively harms nature restoration efforts and will not contribute to GB Energy’s goals of clean energy, energy independence, nor cheaper energy bills.”


This is before you get to the negative health impacts of sourcing and burning biomass, the damage it is doing to the renewable energy brand, or, importantly, habitat destruction, which so often gets missed in the race towards net zero.

I want to raise a couple of wider bioenergy issues. I am really worried by the idea of BECCS—bioenergy with carbon capture and storage, which the Government seem intent on believing is an inherently negative emission technology. Let us look a little further. The assumption is based on the idea that all biomass inputs are waste—which not even our sustainability requirements require—or are balanced out by regrowth. If it was entirely the former, let us be clear that burning waste wood releases more emissions than natural degradation, through which carbon is absorbed by the soil—and that is before you get to all the other environmental benefits of leaving forestry residue in the forest where it belongs. If we assume the latter to be true, it is only the case after several decades and, again, only if the trees are actually replanted. In short, there is no way to verify that biomass is carbon neutral at any point.

I feel that this has gone so far that it would even be worth the department itself sending someone out to where these pellets are apparently sourced from—in North America and in the province of British Columbia. Perhaps there is something that DESNZ or its predecessor, BEIS, has already done, which I have heard rumours about. I would be very grateful if the Minister could tell me if this has happened or is planned.

Biomass is not carbon negative. I understand that the Minister’s department baked BECCS into our carbon budgets over a decade ago and that they are ongoing in future carbon budgets, but the logic is flawed and, at its worst, truly deceitful. Just because we classify something as renewable or carbon negative does not mean that it is. We do not have time to grow the trees to absorb the carbon we are pushing into the atmosphere. As the noble Lord, Lord Forsyth, said, we are cutting trees down in North America and Canada, turning them into wood pellets, shipping them by various means back across Canada and the Atlantic, often to a power plant in Yorkshire where they are belting out carbon into the atmosphere, and we are calling this clean and renewable. My Lords, it is not.

My question for the Minister—apart from whether he is on this mission to find out the extent of this—is whether he will rule GBE out of involving itself with biomass power generation, and will he come back to me on what investigations his department has done in the past few years? Can we be honest at this point and remove the absurd assumption that biomass is inherently carbon-neutral at the point of use?