You are right Rainer. There is a steep learning curve. Companies who have considered various options associated with staff working from home are going to have the data required to study the effectiveness of carrying out business from remote locations.  Our company (IESO) has a backup facility that duplicates the man/machine interface control room capability of the main control center in case of localised disaster. Such as a loss due to fire all the way to considering a train derailment generating hazardous airborne gases forcing an evacuation. We had to take control from that facility and run exercises on a routine basis. And while we were in transit from the main control center to the backup Michigan took control of load balancing the combined Ontario + Michigan footprint (with the  reverse capability when  MISO control  center carried out evacuation exercises). All North American regional control centers must maintain backup capability. But we have contemplated running the power system with dedicated work stations at home that meet cyber security requirement. There is no  reason this can't be facilitated and this event  is  going  produce  a lot  of creative solutions for a lot  of  industries.