Overview
- Whistleblowers told MPs that on June 23 the National Energy System Operator failed to meet grid security standards meant to prevent blackouts during an extreme heat spell.
- The Government and Neso say the grid stayed stable, that electricity demand was met on every day in question, and that no customers lost power.
- Neso issued an electricity margin notice during the heatwave, a standard request to generators for extra supply when margins are tight.
- Whistleblowers allege Neso’s corporate affairs team interfered in operational choices and that some decisions were recorded in live documents with no audit trail.
- Neso has hired an external legal firm to investigate and will send findings to Ofgem in the coming weeks, a step critics say may not guarantee true independence or anonymity for staff.