Power is honestly really hard -- for example, if you read through this list of datacenter power failure post-mortems: http://up2v.nl/2017/06/02/datacenter-comp

Power is honestly really hard -- for example, if you read through this list of datacenter power failure post-mortems: http://up2v.nl/2017/06/02/datacenter-complete-power-failures/ http://up2v.nl/2017/06/02/datacenter-complete-power-failures... there are a lot of individual failure cases. DC operators learn from each failure, but there are a lot of ways things can go wrong. Fabs can be upwards of 50MW, which puts them in the range of a good-sized datacenter, so the challenges probably end up similar. (I'm saying the last part carefully - I'm much more familiar with datacenter power design than fab power design!)