PARLIAMENTARY DEBATE
Energy Grid Resilience - 30 April 2025 (Commons/Commons Chamber)
Debate Detail
I want to reassure the House that Great Britain has a highly resilient energy network, and that the incident in Iberia has not impacted Great Britain. The Secretary of State has been in regular contact with the National Energy System Operator over the past two days, and it has provided reassurance that there is no increase in risk to our energy supplies or system stability from this incident.
My Department was informed on Monday 28 April by NESO that a power outage had occurred across the Iberian peninsula, affecting mainland Spain, Portugal, Andorra and areas of France. While all power was restored to the impacted areas yesterday, Tuesday 29 April, the disruption had cascading impacts on other sectors across the vast majority of Spain and Portugal. The cause of the outage is yet to be confirmed; it is likely to take some time for the Spanish network operator to carry out a thorough investigation to determine the exact cause of the failure. Various independent reviews have been commissioned by Spain, Portugal and the European Commission to understand the cause.
Although GB is not directly connected to Spain and Portugal’s grid, NESO is in close contact with European counterparts, and is offering support where needed. The Government are closely monitoring the situation and are in contact with the Spanish and Portuguese authorities to ensure the safety and wellbeing of any British nationals in the affected regions.
I turn to our grid’s resilience, and our preparedness in the context of recent events on the Iberian peninsula. An event similar in impact in Great Britain would be equivalent to a national power outage—a total loss of power across the whole of GB—which is listed on the national risk register as a high-impact but low-likelihood event. In its 75-year history, Great Britain’s national electricity transmission system has never experienced a complete shutdown, or anything on the scale of what has happened in Spain over the past few days.
Our electricity system is highly resilient. The National Energy System Operator continuously monitors the condition of the electricity system to ensure there are sufficient inertia and reserves in the system to manage large losses and prevent large-scale power outages. NESO has also introduced innovative new approaches to managing system stability, as well as advanced safety systems to help to prevent such events from happening in GB. The system is built, designed and operated to cope with the loss of key circuits or systems without causing customer impacts. There are multiple redundant alternative routes through which power can flow should a fault occur, minimising the risk of a single fault cascading across the entire system to cause a total or partial electricity system shutdown.
However, as a responsible Government, we prepare for all eventualities, no matter how unlikely. I would like to reassure the House that the Government work closely with industry to continually improve and maintain the resilience of energy infrastructure, networks and assets to reduce vulnerabilities. This work includes having robust emergency plans, summarised in the national emergency plan for downstream gas and electricity, and regularly exercising emergency plans with the energy industry and Ofgem. That includes an exercise carried out by the previous Government; we have been taking forward the recommendations from that exercise. This work is ongoing across Government to ensure we are as resilient as possible as a nation in all eventualities.
We have also empowered the independent National Energy System Operator to carry out resilience functions across the electricity and gas systems, and will continue to work with industry and regulators to improve and maintain the resilience of old, new and future energy infrastructure. Switching fossil-fuelled generation for home-grown clean energy from renewables, nuclear and other clean technologies is the route to long-term energy security. I will speak more broadly about the UK’s energy resilience in a debate in Westminster Hall on Tuesday.
To conclude, Great Britain has a resilient energy network, and we will ensure that that continues to be the case. I commend this statement to the House.
The Minister rightly addresses concerns about the security of our grid in the context of the shutdown witnessed on the Iberian peninsula, and I am glad that he can confirm that he is carrying on implementing the recommendations from Exercise Mighty Oak, in which I was involved, on the action that would be required if such an event took place in GB. The primary responsibility of the Minister’s Department is to keep the lights on in this country. The images from Spain and Portugal are a sombre reminder of what happens when the grid fails. Extended blackouts are devastating, and it is a relief that power was restored to 99% of customers by 6 o’clock yesterday morning. The grid collapse in Iberia has demonstrated the fragility of the complex, interconnected systems that support modern life, and the very real impacts on human life of such a collapse.
It is the Minister’s responsibility to ensure that the same thing does not happen in Great Britain, as the price for our economy and for communities across this country would be catastrophic. We cannot get away from the fact that this Government’s plans to rush ahead to build a grid that is entirely dependent on the wind and the sun in just five years’ time will make our electricity grid significantly less reliable.
The stability of our electricity grid depends on what is called inertia, which is the ability for the system to resist destabilising fluctuations in frequency. It is the reason our grid has been so secure and resilient over the decades the Minister references. This inertia is provided by turbines, like those found in nuclear, hydro or, crucially, gas power stations, but it is not provided by solar or wind farms. If the grid does not have enough inertia to resist sudden changes in frequency, it can become destabilised, and cascading grid failure can occur. That means blackouts. As the Spanish NESO said in its latest annual report, the closure of conventional generation plants, such as coal, gas and nuclear, has reduced the firm power and balancing capacities of its grid, as well as its strength and inertia. This has also happened here in Great Britain. Data from NESO shows that the inertia in our grid has been steadily decreasing over time, as gas and coal have come off the system, to be replaced by wind and solar. This comes with a hefty price tag, which is the problem with so much of the Labour Government’s approach to energy security. Their imposed targets are saddling the British people with mountains of extra costs, as the Government rush ahead towards a power system that depends on the weather, rather than on firm, reliable baseload.
Tens of billions of pounds are spent subsidising wind farms, expanding the grid, and providing back-up from reliable gas plants. The Government set their 2030 target, and now they are trying to work out how they can achieve it, but they refuse to be honest with the British people. They refuse to do an open and honest assessment of the costs and risks that come with this approach. It is no wonder that even Tony Blair has said that the present policy solutions are inadequate and doomed to fail.
The Conservatives believe in a system that delivers secure, affordable and clean energy for the UK. A cyber-attack has been ruled out by the Spanish Government as a cause of their grid collapse, but we know that the threat of interference from hostile states is constant. Will the Minister update the House on the action he is taking to protect the grid from hostile activity? When will he finally tell us which single Minister is responsible for the safety and security of our offshore energy infrastructure?
The lessons from the incident on the Iberian Peninsula are abundantly clear. We must retain inertia in our grid to keep it stable and resilient. Nuclear power provides vital baseload power generation, along with inertia, which would have helped to mitigate a cascading failure like the one earlier this week. Will the Minister give the nuclear industry the certainty that it is asking for, and commit to 24 GW of nuclear power, as the previous Government did? Will he ask NESO to provide this House with a full, transparent update on the role of inertia in our power system, on the consequences of declining inertia, on the impact that has on grid stability, and on the costs associated with it?
Finally, the Minister has said that Great Britain has never experienced a complete shutdown such as that seen on the continent. What assurances can he offer this House that work is being undertaken, so that NESO and the National Grid are prepared for a black start, if ever that is needed?
I am surprised that the hon. Gentleman did not recognise the work that the previous Government did on building the renewable system, and on introducing inertia into the system, because that all started a number of years ago. We have a resilient grid in this country, and it is important to continue to have that. That means building new grid infrastructure, which he and a number of his colleagues quite often oppose. It is important to build that grid infrastructure and to invest in it. We will continue to work with NESO and others to understand the full causes of this outage. I will not be drawn into speculation on what may have caused it, because clearly the first priority of the Spanish and Portuguese Governments has been restoring power, but they will carry out investigations to find out the cause, and we will implement any lessons from that.
Finally, the hon. Gentleman was right to reflect on Operation Mighty Oak, which was carried out under the previous Government. We have been taking forward those recommendations right across government. My right hon. Friend the Chancellor of the Duchy of Lancaster is looking at resilience across Government. These are all important points. However, I say gently that energy security is an absolute priority for this Government, which means building the energy infrastructure that this country needs, and not opposing it at every turn.
Gas sets the price for our electricity 98% of the time in this country. Those who oppose the transition to low-carbon energy generation are opposing energy security for this country. They are opposing lower prices for our constituents and good, well-paid jobs. That is what this agenda is really about.
The broader point that my hon. Friend makes is right: constituents right across the country continue to pay too much for their electricity. That is because of the role of gas in setting the price in our system. The more renewables that we build, the more that we push gas off as the marginal price setter, the more that we bring those bills down, and also the more that we make sure that they are not subject to the volatility of the fossil fuel markets as they are at the moment. My hon. Friend is right: this is the right journey for us to be on; it is right for the British economy; and it is right for energy security. The Opposition parties should support that.
Our constituents will be concerned to know about preparations in this country. What conversations has the Minister had across Government to ensure that the UK has robust plans in place in the event of similar situations occurring here? In particular, can he outline what contingency plans are in place to protect our transport network, our hospitals and urgent healthcare settings and our emergency communication capacity? The latter currently relies heavily on the mobile network for our emergency alert system, as well as being the primary way that most people stay up to date.
Clearly, the energy system in this country is resilient, but the job of Government is to prepare for all eventualities, however low the chances. We take very seriously not just the preparations in place, but making sure that Government are ready to try out some of these processes and to learn from experiences such as this. There will be things that we can learn from the Spanish and Portuguese Governments, and we stand ready to do that.
Centrica operates the Rough gas storage site, which provides about half of the UK’s current gas storage capacity. Centrica stands ready to invest £2 billion of its own capital to redevelop Rough into the largest long-duration energy storage facility in Europe, capable of storing both natural gas and hydrogen, which would improve resilience and protect customers from price spikes. To unlock this £2 billion, the company needs assurances and clarity from the Government, not least over regulatory support and a workable cap and floor mechanism. Will the Minister set out what progress has been made in discussions with Centrica to develop this cap and floor mechanism? Given that the Government can make decisions quickly when they choose to, as we saw with British Steel, why has a decision on this mechanism been allowed to drag on for months?
While thousands of airline passengers were impacted by Monday’s outage across Spain and Portugal, only 500 flights were grounded out of a possible 6,000, the rest managing to fly. That is because there were no airport closures. Is there a lesson here for UK airports?
My hon. Friend raises an important point. The broader point here is that we do not know the causes of the outages, and any sensible Member of this House will, I am sure, await the full response of any investigation that will be carried out by the relevant authorities in this case, rather than just jumping to speculation. As my hon. Friend says, the rush to conclusions betrays the truth of the matter, which is that many hon. Members in this place have an ideological, extreme and damaging opposition to clean energy. That includes Members in the party of the hon. Member for Boston and Skegness (Richard Tice) and other parties, including the Conservatives, who defended this for such a long time and now seem to be working together against it. They want to leave us colder, poorer and in the pocket of Putin. We will not accept that.
We do not for a second think that any of the actions we have taken will always be enough. We are constantly looking at how cyber-security develops and changes and how we can do more. But our energy system is resilient. Ofgem has a role to play in making sure that suppliers and individual electricity companies, as well as Government, take this issue very seriously, and it is an issue that I will continue to spend time focusing on.
On the broader point, we get to the heart of the contradiction. The Conservative party wants to talk about resilience of the network but does not want to build any new network infrastructure. I am afraid that the two go hand in hand. If we want to have power and a resilient network, we cannot stay in the same place we were 60 years ago. We actually have to build some stuff.
My hon. Friend made an important point. The serious response to an unprecedented incident like this is to take stock of what happened, to introduce some facts into the debate—some people do not like to see facts in these debates—to allow a proper investigation to find out what caused it and, yes, to learn lessons from it. There will be lessons to learn, but I will not rush headlong into an ideological argument that damages our energy security by suggesting that somehow we should go back to the past and then everything will be fine. The clean energy transition is right for climate, right for jobs in the supply chains, right for bringing down bills and right for this country.
Rotating stabilisers are enormous electrical motors that are being deployed around the UK, as part of National Grid’s pathfinder programme, to strengthen vulnerable areas of the grid. GE Vernova tells me that one is operating in Scotland now and has proven that it can prevent more serious grid disturbance, and the company has other projects to deliver the stabilisers across the UK. The Government are investing more than ever in grid upgrades and infrastructure, which is good for the country and good for the economy, and it affects places like Rugby, where we build vital parts, with a knock-on effect on the local supply chain, on skills development and so on. This is a really good thing that should be celebrated.
My hon. Friend also raised the wider point that the transition to building a clean power system is about not just the generation we get out, but the good, well-paid jobs in the supply chains that deliver it and investing in industry right across the country, including in his constituency. We have committed to driving that forward. That is why the Prime Minister announced £300 million of supply chain investment at the energy security conference last week, and why we will continue to fight for this transition while the Conservative party turns against it.
The Minister referenced the point I made yesterday about the grid in Scotland and previously expressed concerns about the amount of time it would take to reboot that grid if there was an outage. As we have seen in Spain and Portugal, there is significant disruption if the grid is off for hours, but if it were off for days, that would be very significant and much harder to manage. Will he confirm again that the Department will look specifically at that issue?
I entirely agree with the right hon. Gentleman. In the news we saw the impact on day-to-day life of what happened in Spain and Portugal, and he is absolutely right that if that was to go on for longer than a few days, there would be quite significant impacts. We look closely at the cascading effects and at what parts of the system we reboot faster than others to deliver priority services, such as in the NHS. We will continue to do that. The point he raised yesterday and again today about how quickly different parts of the UK and Scotland would be rebooted is an important one that I will take away.
The major concern of residents in my constituency is the ageing grid infrastructure. What work has the Minister done to ensure that we have the infrastructure we need to ensure that constituencies like mine have the power to shine?
There are two really important things to recognise with our network. First, it cannot stay in the state that it is in forever; it needs upgrading. Secondly, the demand that we fully expect to see—potentially a doubling by 2050, and maybe even more than that—means that we will have to build more grid to bring the power to where it is necessary to deliver economic growth. It is right that we move forward with that, but everyone will need to recognise that, to deliver that system—whether we are delivering clean power or not—the network is necessary, and stuff does have to get built somewhere. The Government are committed to building it and the Conservative party is committed to opposing it.
There is resilience built into the mobile phone network to ensure that masts should be able to operate in circumstances when even the power to them is cut off. It is a question for Ofcom to look at and I have spoken to my colleagues in the Department for Science, Innovation and Technology and the Department for Culture, Media and Sport to make sure that that is happening. There is more that we can do. We are engaging with the Energy Networks Association, which works with distribution network operators, to make sure that all the resilience plans join up and that the practical impact that the hon. Lady rightly raises is taken into account. I will write to her with updates.
On the wider point around inertia, as the system changes, there is a constant balancing job for the National Energy System Operator to make sure that we design a system that is resilient. We are deploying technologies to ensure that the system is resilient and there is sufficient inertia by procuring the alternative technologies that my hon. Friend the Member for Rugby (John Slinger) referenced, but we will keep it under constant review.
The Minister has rightly said that the cause of the outage in Spain is yet to be identified, but the fact is that it is linked to 53% of electricity on that day being generated from renewable sources. That should be a sobering warning to all in this House who have been championing the decarbonisation of electricity and the net zero policy.
I am glad that there is inertia built into the system, but the Minister has already accepted that that increases the cost of electricity every week because we have to build a new network to deal with the spikes in electricity; build battery storage, which increases the cost of electricity; and keep gas generators idling over expensively, the cost of which is added to consumer bills, in order to bring them on grid when the wind drops.
I know that the Minister has to defend the policy of his boss that we will get cheaper electricity, even though there is no evidence of that, but will he accept that building inertia into the system will add considerably to consumers’ bills?
The right hon. Gentleman is also wrong about the cost. People often forget that gas in our electricity system does not just appear out of thin air; it comes with a cost. It comes with the cost of building new gas power stations in the first place, which we would have to do if we did not move gas off the system. It also comes with the volatility of being an internationally traded commodity—all our constituents are still paying the price of the energy crisis of a number of years ago. We will have to build infrastructure. If we were not building clean power infrastructure, the grid would still be critical because we have to get electricity to people’s houses. It is important to say that there are no zero-cost options here. We are investing now in a clean power system that delivers considerably cheaper power in the long term.
The Minister has been forced to say that his Department is ready for all eventualities; well, tell that to the tens of thousands of radio teleswitch service customers who will be left high and dry by his Department. He says that he has every confidence in the National Energy System Operator. I did not have a lot of confidence in it on 7 January when, but for the reinstatement of the Viking interconnector, we would have had a very difficult situation on the GB link. I know that that is distribution and not transmission. There is also the matter of trying to instil confidence in GB among electricity consumers after an episode on 21 March at Heathrow, which saw global consequences for a relatively localised disaster in the UK energy market. How does the Minister have confidence after those two events?
First, I am giving this statement because a number of hon. Members across the House asked questions of the Government on this issue, and it is right that the Government respond to such questions. In fact, I would be criticised if the Government did not offer a statement when questions are being asked. This statement is therefore in response to hon. Members across the House and from different parties.
On the capacity questions in January, I am afraid the hon. Gentleman is quite wrong. The repetition of those quite wrong statistics on social media and in this House reduces confidence, and they are not based on truth. To be clear to the House, the standard operating reserves held by NESO at all times is for the largest power generator in the system, which, according to NESO, was 1.4 GW on Wednesday 8 January and not 580 MW, which is the figure in the public domain. The overall headroom on that day was never lower than 3.7 GW. It is simply not true to repeat the idea that we had 580 MW of capacity left in the system; it was never lower than 3.7 GW.
My Department has a number of civil servants with expertise in how the energy system works. I pay tribute to the team, who are often there out of hours when storms and other incidents occur. They do a remarkable job. The question about reporting, however, is important. Partly what the Government seek to do with our mission approach and with the Chancellor of the Duchy of Lancaster’s work is to bring together the whole of Government so that everyone who has a responsibility is at the table, feeding in their views. The hon. Gentleman makes an important point.
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