"Households and businesses should be able to have confidence in the resilience of critical national infrastructure, and Ofgem will work with the government and others to ensure Neso's [National Energy System Operator] review goes as far as possible to ensuring steps are put in place to avoid any repeat of an incident of this scale in the future. "To the extent the review finds any breaches of standards or licence obligations, we will not hesitate to take action." North Hyde electrical substation which caught fire (Photo: Maja Smiejkowska/PA) Neso chief executive Fintan Slye said: "Neso welcomes the Government's commission to review the power outage incident impacting Heathrow and surrounding areas. "We will now work with all relevant stakeholders to understand the lessons that can be learned to improve future resilience of Great Britain's energy system."