gigi is exactly right, lot's of people use absurd amounts of electricity for perfectly legit reasons, as long as you pay your bill on time nobody will pay notice.
I have 2000 watts of light over this aquarium and the pumps, chiller and other equipment use up another 2000 watts, you could grow some serious pot with that much electricity and there are no cops knocking on my door ;-)
It's when a certain street is consuming more electricity than is being billed for that they become suspicious. I've heard that some growers steal electricity because they are scared the power company will tip off the police on large electricity consumption and then end up getting busted because they are stealing electricity ;-)