Engineers responsible for keeping Britain's lights on have raised serious concerns about the electricity grid's ability to cope with the transition to renewable energy, according to an independent investigation.
A report by law firm Eversheds Sutherland found “high levels of stress and concern” among staff at the National Energy System Operator (Neso), who fear growing reliance on less flexible renewable generation is making it increasingly difficult to balance electricity supply and demand.
The investigation also uncovered significant cultural and governance problems, with control room engineers claiming senior management failed to understand operational pressures and that concerns were going “largely unheard” because of reputational and political considerations.
The review followed whistleblower allegations that Britain came close to blackouts during June's heatwave, when the electricity system breached several operational safety limits.
Although investigators could not substantiate allegations of improper interference in operational decisions, they found evidence of a disconnect between frontline engineers and senior leadership.
Energy minister Michael Shanks said: “The independent review raises areas for cultural improvement in Neso where we expect significant action without delay.”
A separate Ofgem investigation into the security of electricity supplies during June's heatwave has been extended into next year.