I read this Fantasy short story (or maybe novelette ?) about 20 years ago, in a collection which might have been older.
It takes place in Japan, in the throes of modernising, so I suppose, in the late 19th, or very early 20th, century. I don't remember much, except that there is one demon (or maybe several ?) who lives on electric wires. Whether these are wires transporting electrical power, or just telegraph wires, I don't remember. Probably the latter, so early in time. Anyway this demon (or these demons) have the rather unpleasant tendency to start fires, which does not contribute to making the general japanese population very enthusiast about modernisation.