Google Reveals Why Its Backup Generators Didn't Start During the October London Outage
Google Cloud has published a detailed post-incident explanation of the 20 October power failure that knocked out UK banks and courts, revealing that a misconfigured programmable logic controller failed to signal its backup generators to start, even after both utility power feeds were down and five-minute battery UPS systems ran out. The full root cause shows how routine maintenance, a genuine cable fault and a software logic error combined to defeat defences that looked robust on paper.
