I can imagine that anything that involves logistics, moving people or things around. Lack of electricity might disable something that's important to you, but ov

I can imagine that anything that involves logistics, moving people or things around. Lack of electricity might disable something that's important to you, but over which you don't have direct control or precise information about. Blackouts might affect only parts of a city, and I can see why having precise, real-time information about which parts of the city have power or not, is something really useful to re-route things around the problem.