FWIW a 12 ft. by 12 ft. bedroom, equipped with three 400 watt Quartz Halide lights, will produce 5 lbs. of manicured bud every three months.
Excessive electrical usage has already been accepted by most Court juristictions as grounds for probable cause for issuance of a search warrant.
What wasn't stated was how many homes which fit the same profile were searched and pot WAS discovered- in my experience I could guarantee it's more unusual to NOT find pot in a home fitting this profile than it is to actually find pot. In fact I'll bet it's somewhat newsworthy when a home fitting this profile is searched and (gasp) no dope is found.
BTW, if you want to smoke or grow dope without fear of criminal prosecution then move to Mendocino County, California, get a Dr.'s prescription, visit the local Pot Shop and smoke yourself comatose.
Then I'll show you areas where the growers have poisoned the wildlife, clearcut hillside brush (which causes erosion in the winter), dammed up salmon spawning streams resulting in the loss of generations of migrating salmon, used chemical fertilizers with impunity, hung fishhooks on trails to deter rip-offs, stopped cars at gunpoint and brutalized the occupants, killed each other over their dope, etc., etc., etc.-
Anybody who wants, you have an open invitation to visit this summer, and I'll show you exactly what the pot culture has created up here. Then decide if this is a "victimless crime" or not.