Actually, the better trick is to start a tax for outside-of-Arizona users of their power...call it a “Carbon Tax” just make yourself green...and let LA know that they are special. They need to get used to carbon taxes anyway...and this just helps them get used to this sooner.
Obviously LA only means to boycott SOME things. They do have a contract for power, but I don't think they have a contract for delivery. Perhaps they should come and pick it up.