I wouldn't worry about it too much. If you're draining electricity ( like 3, 1000watt HPS lights), the power company might get curious, and alert the police. But remember, electricity use alone is not enough to merrit a warrant.
They need to convince a judge (whose credibility is on the line) to write them a search warrant, and thats a lot of bullshit paperwork, so they better know what the hell they're talking about, have a lot of evidence, and do a fuckup job like the carlsbad CA police.
Hope this helps,
Tenn