Investigations launched as power outage disrupts country
A power outage affecting much of England and Wales occurred at around 16:54 BST on 9 August.
National Grid Electricity System Operator (ESO) commented that “the root cause of yesterday’s issue was not with our system but was a rare and unusual event, the almost simultaneous loss of two large generators, one gas and one offshore wind”.
The company said it was “working with the generators to understand what caused the generation to be lost.” The generators are understood to be Little Barford gas turbine (664MW capacity) and the Hornsea One offshore wind farm (812MW capacity).
According to the ESO, following the outages “other generators on the network responded to the loss by increasing their output as expected. However, due to the scale of the generation losses this was not sufficient, and to protect the network and ensure restoration to normal operation could be completed as quickly as possible, a backup protection system was triggered which disconnects selected demand across GB.”
Energy regulator Ofgem has requested “an urgent detailed report from National Grid so we can understand what went wrong and decide what further steps need to be taken. This could include enforcement action.” National Grid ESO submitted the report on 16 August and the ESO said that it expected Ofgem to release it publicly this week.
Additionally, the government said it would be commissioning the Energy Emergencies Executive Committee to investigate the incident. The committee will review the actions of National Grid and provide a report on initial findings to Business Secretary within 5 weeks, with a full report to come in 12 weeks….read more