When the Great Northeast Power Outage of 2003 happened in the US, I was working for a company in Michigan. Our rack UPS logged some heavy voltage swings, both above and below normal, before the grid finally collapsed. Later I was able to roughly correlate my UPS log with the published chain of events, as different power lines tripped offline and created surpluses and shortages in different parts of the grid.
Biting the hand that feeds IT
