At the university I work electricity goes down once per year for a test and such "annual check" is said to be normal for bigger campuses. Even for labs that use only servers it is a painful two-day break, especially if you do some time-consuming machine learning, not speaking of biology labs which use freezers or fridges. As our campus is the biggest one in Japan (approximately 180 hectares) I was wondering if it is a thing outside Japan - do you have annual (scheduled) outages at your campus? Have you heard of such cases?