A major Google Cloud outage was caused by uninterruptible power supplies being...interrupted

• Google Cloud’s us-east5-c (Columbus, Ohio) zone had a six-hour outage
• It was caused by a failure to its uninterruptible power supply
• Over 20 services and some storage disks went down

Much like the unsinkable Titanic met its demise when it sank, Google Cloud has recovered from a major outage caused by an interruption to its uninterruptible power supplies (UPS).

The company confirmed that its us-east5-c zone, otherwise known as Columbus, Ohio, experienced “degraded service or unavailability” for a period of six hours and 10 minutes on March 29, 2025, blaming it on a “loss of utility power in the affected zone.”

Over 20 cloud services suffered reduced performance or downtime as a result of the outage, including BigQuery, Cloud SQL, Cloud VPN and Virtual Private Cloud.

Google’s uninterruptible power supply just had a pretty major failure

In its incident report, the company explained exactly what ...