According to this ordinance, Styria is divided into six zones (Ennstal/Upper Murtal, Mürztal, West Styria, East Styria, Greater Graz 1 and 2), which can be successively disconnected from the power grid for a maximum of four hours. This is a delicate situation, especially for hospitals, nursing homes or educational institutions, for which you have to prepare well. The warning time for the population should be at least one week