National Energy System Operator: Blackout Risk

Debate between Michael Shanks and Chi Onwurah

Wednesday 15th July 2026 Commons Chamber

[Michael Shanks]

It is right and proper that we are talking about this issue, but I can assure the hon. Gentleman that there is absolutely no complacency on my part or that of the Government. I take my responsibilities incredibly seriously, as do NESO and Ofgem, the operator, and I think he should be careful of his language on an issue as serious as this. [Interruption.] He shouts from a sedentary position about blackouts. That is exactly the point I am making: this is irresponsible language. We are not debating across the House, and it is totally irresponsible.

I am not sure how much more clearly I can say it to the House, but I can point the hon. Gentleman to some published reading material on the nature of what happened during that week. I have not denied at all that an extreme weather event caused pressure on the grid, but at no time did frequency move outside the normal operating range, at no time did we not meet demand across the country, and at no time were we close to disconnecting anyone whatsoever from the system, let alone to a potential blackout, as he frequently likes to share on social media.

We have a robust and resilient energy system that came under pressure, and it responded exactly as it should. The allegations that have subsequently been made about how decisions were made that day are serious and will be taken seriously in the investigations, and we will learn any lessons that come from that, but that does not detract from the fact that we met electricity demand on every single one of the days that it was under pressure. He can dispute that all he wants, but it is a basic fact.

[Dame Chi Onwurah (Newcastle upon Tyne Central and West) (Lab)]

It is right that an investigation into these allegations has been confirmed, and I welcome reassurances that the grid remains stable. As an electrical engineer, I have always been in awe of the work of our grid, and of the challenges it faces: climate change, electrification, the demands of renewables and AI, and cyber-attacks. Could the Minister set out what steps the previous Government took during their 14-year tenure to invest in a more resilient grid, and what steps this Government have taken?

[Michael Shanks]

In the past two years, during which I have had the privilege of doing this job, my hon. Friend has frequently shared her experiences as an electrical engineer, and she is right. I, too, am in awe of the grid and of the work that its operators do day in, day out as part of the extremely complex job of balancing supply and demand 24/7. I will not get into what the previous Government did or did not do, but they did not do enough. I am not saying that they had no interest whatsoever in this issue, but there was clearly a long period in which there was not enough investment to build the grid that we need for the future. They did not maintain the resilience of the grid or invest enough to ensure that it was able to cope with these kinds of weather events, which we know will become much more frequent, so there has to be increased investment.

That is why we are driving forward the biggest upgrade in the grid in generations, and the work that the operators do at NESO is a critical part of that. The system is becoming more complex, which presents opportunities for decentralised energy and for using much more renewables in the system, but it is more complex to manage as well. I am absolutely confident that NESO is able to do that, but this is a lessons-learning exercise and we will learn the lessons from it.

Heathrow Substation Outage: NESO Review

Debate between Michael Shanks and Chi Onwurah

Wednesday 2nd July 2025 Commons Chamber

[Mr Deputy Speaker (Sir Roger Gale)]

I call the Chair of the Science, Innovation and Technology Committee.

[Dame Chi Onwurah (Newcastle upon Tyne Central and West) (Lab)]

Speaking as a chartered electrical engineer and as the Chair of the Science, Innovation and Technology Committee, I am absolutely amazed that such an important and large part of our critical national infrastructure in the National Grid was not properly maintained for seven years and that Heathrow—the busiest airport in the world—had a single point of failure. The Minister has outlined some of the processes and procedures that will follow, but will he say how he intends to improve the standards of engineering maintenance culture and excellence in our critical national infrastructure, which have clearly been allowed to fall significantly under successive Conservative Governments?

[Michael Shanks]

First, it is important to say that Heathrow had multiple routes into its electricity network—three in fact—which is unique. This report and the processes identified in the Kelly review will give Heathrow Airport Ltd pause for thought on what it needs to do on how its network is configured and how it can adapt in such situations. Of course, this is an incredibly rare circumstance, but the whole point of resilience planning is to plan for eventualities that we think are extremely unlikely to happen but that would have a significant impact if they did. Heathrow closing is clearly one such circumstance.

Secondly, my hon. Friend is right to highlight standards and systems. I want to be careful not to prejudge the review that Ofgem has announced, because there is something to be said about standards changing over time. Maintenance backlogs obviously then have to be met, and if the issue is that maintenance that should have been carried out has not been, that is clearly an issue we will take forward. But if it is just that pieces of infrastructure were subject to standards that have changed over time, we have a wider question of how we can adapt some of that infrastructure for future standards. We will look at all those points. I repeat to the House that our electricity system is incredibly robust in its resilience. We need to do everything possible to make it even more robust, so that such instances do not have quite so significant an impact as this one did.