Tidal Lagoons and UK Energy Strategy

Alan Whitehead Excerpts

Tuesday 6th December 2016 Westminster Hall

[Dr Alan Whitehead (Southampton, Test) (Lab)]

We have had an excellent debate, with contributions from Members on both sides of the Chamber indicating almost unanimous support for the Swansea bay tidal lagoon. That outcome—the clash of ideas in the white-hot heat of full agreement—should be impressed on the Minister. Even though there was what might be regarded as one dissenting view from the hon. Member for Eddisbury (Antoinette Sandbach), I think that she supports the idea. She made some important points about value of money and about how careful one needs to be to get that right.

We can, I think, say that there is agreement, more or less, about the principle of the Swansea bay tidal lagoon and full agreement, at least by the Opposition, about the practice. Indeed, Opposition turnout and the first-rate contributions made by my hon. Friends the Members for Aberavon (Stephen Kinnock), Swansea West (Geraint Davies), Swansea East (Carolyn Harris), Newport East (Jessica Morden) and Workington (Sue Hayman), and by the hon. Member for Aberdeen South (Callum McCaig), indicate just how full the support is on this side of the House, not just from south Wales Members but across the country. I think that is because we need to make it clear that support for Swansea needs to be based, as Members have emphasised, not just on whether we build that tidal lagoon but on what it means for tidal lagoon technology for the UK’s future and what it means also for the series of lagoons that can come about as a result of the Swansea proving lagoon.

That series of tidal lagoons is not a concept based on thin air; it is not about harnessing an as yet untried technology that might come from the middle of nowhere and save us as far as low-carbon power is concerned. Essentially, it works on a simple principle of proven, well-known technology, of water entering the lagoon subject to its flow through a turbine, both when it is coming in and on its release when the lagoon is full, that allows for the generation of some 14 hours of utterly predictable power. We know that the principle works well because, as the Rance barrage in France has shown, the technology is reliable over many years and, as has been mentioned, it is a power source with a lifetime far in excess of those estimated for wind, gas and even nuclear. It is likely also that the outage time over a long period will be relatively low.

Swansea is not a large lagoon in terms of what is possible. It will have an installed capacity of 350 MW, which is approximately a tenth of the most worked-up second lagoon, in Cardiff bay, which comes in at a capacity close to that of Hinkley Point C power station. However, it is the possibility of Swansea being the proving ground for a number of tidal lagoons that will not only be cheaper to construct and operate than Swansea but will open up the prospect of a large contribution—perhaps 10%—of our electrical power needs that ought to be a condition for supporting it. What we should be investing in as a country is not Swansea, but Swansea and the prospect of all the others as a major component of our future energy make-up.

As Members have mentioned, as far as our country’s overall energy make-up is concerned, power plant is going offline at an alarming rate, with 23 GW of conventional thermal plant being closed or mothballed since 2010, and a further 24 GW—mostly of coal and nuclear—to be closed by 2025. It is unlikely that nuclear will even begin to make up that gap. Hinkley is delayed by longer than seven years and will probably not be on line until 2026-27 and, according to the latest consultation, coal is due to come offline by 2025.

We need replacements for the lost capacity, and a lot of that will come from the aggregation of renewables, but at present the only plan appears to be that gas-fired power stations will be built out at some pace between now and the late 2020s. We know that gas power stations are not, at present, getting built and, indeed, the Government are pursuing expensive capacity market operations—with an auction today or thereabouts possibly costing us £2.5 billion—for capacity over the next period. That is the last chance saloon, one might say, for gas plant procurement under the present arrangements. Swansea, and other lagoons, would certainly serve as a substantial alternative to some of that build, which, if procured, would cost substantial amounts—something that needs to be taken into account where value for money is concerned. All energy, at the moment, is expensive to build. All energy, at the moment, is being subsidised in its build. It is not about considering just what Swansea might cost but about what the alternatives might cost as well. Under those circumstances, Swansea performs, in the long term, very well.

Within a few years, perhaps, a number of those replacement power stations will need replacing anyway. Meanwhile, Swansea and other lagoons would have sailed through the period, producing reliable ultra-low-carbon electricity. By the way, in terms of a larger lagoon strategy, they will be able to supply reliable and known amounts of power pretty much round the clock, for the simple reason that the time of high tide varies considerably along the UK coast. I always like to try to introduce a not very well known fact into my contributions and today it is that, right this minute—this very minute—it is high tide in Morecambe bay. That means that if there were to be a lagoon in Morecambe bay it would produce power for seven hours either side of its high tide.



It is not high tide in Swansea. High tide was at 10.20 am. Power could be produced seven hours either side of that high tide, which would overlap almost exactly with the power produced in Morecambe bay on its high tide. With a series of lagoons, there would be round-the-clock, reliable, known, predictable power that was just as predictable and round-the-clock as any nuclear power station or gas-fired power station that we might care to build in this country.

The benefits of developing Swansea and subsequent lagoons are manifest from a low-carbon energy point of view. As Members have alluded to, there would be considerable other benefits, too. Jobs and supply chains would be created, mostly in the UK. It is estimated that 65% of the pathfinder project spend will go on UK content, which is close to the figure achieved by the North sea oil and gas industry. There would be 200 jobs in Swansea and perhaps 11,000 jobs in Cardiff during construction, and several thousand jobs during operation. Developing Swansea is important for what UK plc should be doing to secure the exportable potential of those technologies in which we are world leaders. We certainly are leading in tidal, tidal stream and wave.

As the hon. Member for Aberdeen South said, we only have to look back a little to see how close we came to securing exportable UK industry in wind before we lost our lead and most of our manufacturing and expertise to others, most notably Denmark, because we did not back the development of our world lead through industrial strategy. Yes, I have mentioned the words “industrial strategy”. It appears in the title of the new Department—the Department for Business, Energy and Industrial Strategy—but there is still an absence of anything that looks like an actual industrial strategy from the Government. We were promised a Green Paper on industrial strategy would appear shortly. With lagoons, we have an industrial strategy in the round already, with jobs, a supply chain and exportability. It is running up to us, metaphorically asking us to bite its hand off, and at the moment we are not responding in a positive way.

In all of this, we have to consider the question of value for money, which the hon. Member for Eddisbury mentioned. Comparatively, lagoons provide value for money. Undoubtedly even Swansea will come in as better value for money for electricity-generating purposes than the deal we have concluded with Hinckley C. Comparatively it is in the same league as offshore wind. A series of lagoons would certainly be much better value overall, although we need to cast our minds towards the longer term in thinking about value. Swansea is asking for a CfD for 60 years. That is half the operating life of the lagoon, with payments reducing substantially over that period. Swansea is not asking for a block CfD degressing through future projects; it is asking for a CfD degressing within the project’s lifetime.

I know the Government have not been idle in all this, although on the surface not much has happened since general support for the idea of the Swansea bay lagoon was included in the Conservative party’s 2015 election manifesto. Indeed, as my hon. Friend the Member for Aberavon said, it was also in the manifestos of all the other major parties. I hoped we would hear something positive about Swansea in the autumn statement, but nothing was announced. We will have to wait until the Hendry review has been examined. That review is headed by an estimable former Energy Minister, the right hon. Charles Hendry. I am confident he will have a positive look at value for money and the bigger picture I have described of the lagoon, but we do not know where that review is. We think it is on its way to Government as we speak, but we have not yet had any confirmation that it has been received, or whether there is a timetable for looking at that review or for action after it has been considered. I join my hon. Friends in calling for early publication of the review so that we can all have sight of what it is about. We also call for an early Government response to that review, even if a final decision about proceeding with the Swansea tidal lagoon has not been made.

I conclude by emphasising that timing is important. We have a worked-up, permitted, committed plan that cannot stand in suspended animation while people spend so long making up their mind. Swansea bay, in case anyone needs reminding, is not an interesting concept that we can cogitate on at our leisure, but a real project that needs to be developed within a reasonable timescale. Otherwise all the money invested in it—£50 million—will start to go stale and the project may fail, possibly never to be revived. We need to get on with it, not just for Swansea’s sake, but for the sake of a real solution that could be producing power by the very early 2020s if it is given the go-ahead now. It would be a solution for our mounting energy gap in the early part of the next decade.

[Ian Paisley (in the Chair)]

If the Minister can take about 12 minutes, that will give Mr Crabb a minute and a half to wind-up at the end.