Update:
At 1:45 PM PT, Power was restored to the site and machines had been started to be powered back on. The datacenter is back on full utility power with UPS backup. Datacenter engineers are continuing to look into why the generator supplied power at a voltage outside of expected range for the UPS which caused the UPS to not switch over.
Original issue:
Our datacenter US-NC-1 has reported a power failure at the US-NC-1 facility that occurred at approximately 8:00 AM PT ...