The BBC reports:
National Grid has said it will “learn the lessons” after nearly one million people across England and Wales lost power on Friday.
But director of operations Duncan Burt told the BBC that its systems “worked well” after the “incredibly rare event” of two power stations disconnecting.
He said he did not believe that a cyber-attack or unpredictable wind power generation were to blame.
The former chairman of the National Infrastructure Commission told the BBC the two generator failures meant a loss of about five per cent of the grid’s power over 90 minutes.
“Why that led to the heart of the national transport infrastructure being closed down is a big question that the grid has to answer,” he said.
And a consequential outage too: