UK Grid Operator Faces Investigation Over Alleged Blackout Risk Cover-Up
The UK’s National Energy System Operator (Neso) has engaged an independent legal firm to investigate allegations of a cover-up related to blackout risks during a heatwave in June. This move follows claims from a whistleblower that control-room staff were instructed not to document operational decisions, potentially compromising transparency and accountability.
According to the whistleblower, senior Neso officials allegedly prioritized the organization's reputation over grid safety by discouraging the creation of an audit trail during the record high temperatures. The allegations were brought to light in Parliament by Shadow Energy Secretary Claire Coutinho, who expressed concerns about the grid's manageability and the staff's lack of trust in internal escalation processes.
During the heatwave on June 23, grid frequency reportedly fell below Neso's operational limits, reaching a low of 49.66 Hz, though it remained above the statutory lower threshold of 49.5 Hz. Despite these conditions, Neso maintained that the grid was secure, with frequency and voltage within legal limits. Neso Director Craig Dyke announced a comprehensive review of system operations and confirmed the independent investigation, with findings to be made public.
Energy Minister Michael Shanks countered Coutinho's claims, accusing her of scaremongering and asserting that the grid demonstrated resilience during the heatwave. He called on her to provide further details of the allegations.
Additional reports suggest that Neso's corporate affairs team attempted to influence operational decisions to protect the organization's reputation, with the grid operator reportedly spending millions on emergency electricity from gas-fired generation during the heatwave.