If you pay the bill in most cases nothing raises any flags anywhere. If you don't trust that then I wouldn't go over 3kw-4kw lights in an average small house. People can be extremely wasteful in other ways with pools and hot tubs and heat and a/c and boatloads of electronics and computers etc. I know a lot of computer geeks running more than that on just electronics, and there are other hobbies like salt water aquariums where you can run thousands of watts of HIDs , or legal indoor growing too. nobody's going to look unless you raise suspision in other ways or steal power.