Labour’s energy minister, Michael Shanks, is facing accusations of misleading Parliament over the management of Britain’s electricity grid during a June heatwave, as new documents suggest the system was operated beyond safe limits. The controversy centers on the events of June 23, when soaring temperatures placed unprecedented strain on the national power network.
Shanks told MPs on July 15 that there had been no “emergency situation” and dismissed suggestions that the country came close to blackouts as “scaremongering.” He asserted that electricity supplies were maintained throughout the heatwave and that statutory frequency limits were not breached. However, internal reports from the National Energy System Operator (Neso), the government agency responsible for managing the grid, indicate otherwise.
Leaked documents reveal that engineers were compelled to operate the grid past its established safety margins on June 23, with “system security compromised” on multiple occasions. The reports identified five separate constraint breaches for which there were no pre- or post-action mitigation options available, suggesting that operators had limited ability to manage the situation within normal parameters.
The revelations have raised questions from opposition MPs, with Conservative shadow energy secretary Claire Coutinho demanding clarification on whether Shanks was aware of Neso’s assessments when he spoke to the Commons or whether he was relying on information provided by Neso’s chief executive, Fintan Slye. Coutinho emphasized the importance of ministers providing truthful information to Parliament, referencing the Ministerial Code’s requirement for accuracy and accountability. She called for the new Secretary of State to investigate whether Shanks knowingly misled the House or was himself misinformed.
A Whitehall source stated Shanks stands by his comments, while further complicating matters is the exclusion of Slye from an independent inquiry into claims of a possible cover-up regarding blackout risks. Lawyers conducting the investigation have reportedly been barred from informing Slye of developments. Shanks has said he and Ed Miliband, who was energy secretary at the time, were briefed by Slye on allegations after Coutinho raised the issue.
In response to the internal Neso reports, the energy regulator Ofgem has commissioned Neso to produce an additional report detailing the circumstances of June 23 and the grid operators’ response. Separately, Neso has engaged the law firm Eversheds Sutherland to investigate whistleblower claims.
A government spokesperson defended the resilience of the UK’s electricity system, highlighting its 75-year history without a complete grid shutdown. The statement stressed confidence in existing security arrangements and tools available to Neso to manage demand during extreme weather, asserting that there was never concern over meeting electricity needs during the heatwave.