Energy Grid Resilience

Nusrat Ghani Excerpts

Wednesday 30th April 2025 Commons Chamber

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

With permission, Mr Speaker, I will make a statement on the resilience of the UK’s energy grid in the context of the widespread power outages experienced across the Iberian peninsula over the past two days. My thoughts are with all those affected by the widespread disruption across that peninsula on Monday. I am glad to hear that power has now been fully restored across the region.

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.

[Madam Deputy Speaker (Ms Nusrat Ghani)]

I call the shadow Minister.

--- Later in debate ---

[Michael Shanks]

I shall start with the more serious of the hon. Gentleman’s questions, and then, in reply to some of his other questions, I might gently remind him who was in office not that long ago. On a serious note, I agree entirely with him on his opening point: the first priority of my Department and the Government is to ensure our energy security. The past few days in Spain and Portugal have brought to light just how much of our day-to-day lives are dependent on a functioning electricity system, so he is right to make that point, and we are very aware of it.

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.

[Madam Deputy Speaker (Ms Nusrat Ghani)]

I call the Chair of the Energy Security and Net Zero Committee.

[Bill Esterson (Sefton Central) (Lab)]

There are some inconvenient truths for those on the Opposition Benches who wish to blame low-carbon energy for what happened in Spain and Portugal. As the Minister has said, the cause of the outage is unknown at this stage. In 2003, when there was a blackout in Switzerland and Italy, and in 2006, when the same happened in Germany, affecting the whole of the continent, there were no renewables in the system. That goes to show that it is far too early to speculate.

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.

[Michael Shanks]

I thank the Chair of the Energy Security and Net Zero Committee for his question. Let me reiterate the point that he made and that I will, I suspect, make a number of times during this statement. I will not be drawn on unfounded claims and speculation about what the causes might be. It is rightly for the authorities in Spain and Portugal to carry out the investigations, exactly as it would be if any incident happened here, and for them to share that information. Of course we will be in close contact with them about that, but it is far too early to make any hasty conclusions, particularly when they are based on unfounded claims.

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.

[Madam Deputy Speaker (Ms Nusrat Ghani)]

I call the Liberal Democrat spokesperson.

[Claire Young (Thornbury and Yate) (LD)]

I thank the Minister for advance sight of his statement. Our thoughts are with all those affected by these power outages, which are a stark reminder of how key our energy security is to our national security. That is why it is vital that the Government learn from this latest incident by acting now to boost our home-grown energy by supporting community-owned projects and increasing supply chain capacity.

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.

--- Later in debate ---

[Michael Shanks]

Storage will be crucial in the clean-power system that we are building. Batteries will play a critical role in making sure that we can store the clean, cheap energy that we are generating for times when we need it most. We have also announced the first long-duration energy storage in 40 years, building the assets that will allow us to store eight hours of power for when it is needed most. Therefore, storage is key in a system such as this. And finally, I am always happy to visit my hon. Friend’s constituency.

[Madam Deputy Speaker (Ms Nusrat Ghani)]

I call Harriet Cross—and congratulations on your remarkable London marathon time.

[Hon. Members]

Hear, hear!