I suspect that my next-door neighbor stole my electricity. I won't report it unless he steals mine. Is it possible for professionals to do it?

1. Turn off the main power switch of your house and observe whether his household electricity is affected. If yes, there is something wrong with the wiring. Hehe, I won't say it's stealing your electricity, because sometimes it's not necessarily stealing electricity if you connect it wrong.

Turn off the main switch of his house (this will make the neighbors very angry) and see if there is still electricity in his house. If there is electricity, it means that he used electricity from other places. Hehe, I won't say stealing your electricity, because sometimes "other place" is not necessarily your home.