National Energy System Operator: Blackout Risk

Polly Billington Excerpts

Wednesday 15th July 2026 Commons Chamber

[Michael Shanks]

I pay tribute to the right hon. Gentleman, and to all who were involved in that incredibly important exercise. I was not aware of it at all until I came into this job and read the full report, as well as the breakdown of all the actions that had been started during his time in office and have been continued by officials now. As he says, the cascading impacts of a national power outage are extraordinary and very quick, which is why we are first investing in the grid to ensure that that remains a very low risk on the national risk register, and secondly taking forward all those actions. I do not have the detail in front of me, but very few of the actions remain open; most have now been completed. We are also, across Government, continuing to organise exercises—on a much smaller scale—to ensure that Ministers are prepared and that we continue to keep on top of the actions, because these are not one-time events. The water industry, to which the right hon. Gentleman rightly referred, must continue to look at preparedness. That is the wider work that we are taking forward on resilience.

[Ms Polly Billington (East Thanet) (Lab)]

I am grateful to my hon. Friend for coming to the House and providing clarity and reassurance that the allegations will be taken seriously, but does he agree that alongside the transparency of this process comes the need for responsible reporting and a responsible Opposition? The electricity margin notices are a standard tool that NESO has used for many years, and that includes the time when the Opposition were in government.

[Michael Shanks]

Yes, I agree. At the risk of repeating myself, electricity supplies were maintained throughout this period. Tight margins were caused by unprecedented warm weather—as I think we can all testify, having lived through it that week—and we were not alone in that. Other European countries were facing similar challenges and similar pressures on their electricity systems because of the extreme weather. I say gently that our aim as a House should surely be to do everything we can to prevent that extreme weather from becoming even more frequent, and I hope we will rebuild some of the consensus on that.

My hon. Friend is right to say that the margin notices are a standard operational tool. Although there is enough generation available on the system to meet demand, NESO would like to have an even bigger cushion on that generation, and that is what the electricity margin notices are for. They were withdrawn because that generation was met, and at no point were any customers disconnected.