You'll want to read timelines of blackouts, e.g. this one: https://en.wikipedia.org/wiki/Northeast_blackout_of_2003#Timeline https://en.wikipedia.org/wiki/North

You'll want to read timelines of blackouts, e.g. this one: https://en.wikipedia.org/wiki/Northeast_blackout_of_2003#Timeline https://en.wikipedia.org/wiki/Northeast_blackout_of_2003#Tim... It starts with a small thing at 12:15 p.m. and takes a while for other things to happen. But then bam 4:05:57 p.m. to 4:13 p.m. results in: End of cascading failure. 256 power plants are off-line, 85% of which went offline after the grid separations occurred, most due to the action of automatic protective controls.