Nope, ArmorAlley. In a case of a tall building like mine, the main from outside  goes into the building and it divided up into sections of floors and apartment groups.  In my case its 11th to 14th floors, apartments A - G and I'm in one of those apartments. The feed wires run through the common walls and floors in parallel to an individual circuit breaker of an apartment where it is broken up for that apartment and the feed wires continue next apartment and loops back into itself at the last apartment. Its a nightmare of a set up, and whole sections have gone out before.

Thus a Network over power lines would be bad for me to set up if I set it up, another apartment in my group could try the same thing, discover my network and try to hack into it and leech of my service.