The only thing I have going for me is the e-bill for my garden is pulled off of a commercial meter (also a smart meter) but I've been growing with the same equipment for months before the meter was put in, thats not to say they cant see the 12 and 18 hour time frames, thats what worries me more than anything.
I had no idea I had a smart meter until I read this thread 2 days ago, I was intending to run 3 1k lights for my current grow but I have since reneged and decided to keep only 1 1k going for now and switch to 6's or LED's before adding another light which sucks seeing I purchased 2 brand new 1k ballasts, XXXL hoods and a plethora of extra HPS and MH bulbs (Anyone looking for a deal on 2 sun systems 1k switchable mag ballasts? $275 +ship, boxes never opened). Also I am thinking about switching over to the lantern method where in veg you run lights on for 12 hours, go lights off for 5.5 and then on for 1 hour and off for the remainder. Its little more in depth than that but basically my girls can stay in veg with 12.5-13 hours of light a day but I'm not to keen on just throwing them into that after being on a 20/4 sch since germination.
I have one of those meters that tells you how much your appliances pull when they are running, I'm going to go around to all my gear and add it all up and see what the actual damage a day is, this is on top of the commercial ice machines, washers and dryers, giant restaurant exhaust fans, and an obscene amount of outdoor lights that are running constantly, hopefully my little mini op can stay hidden in the midst of it all. I am almost certain the meter that my op is on is a commercial meter (I live in a kind of industrial area), however that doesnt help with the 12/18/20 hour power consumption cycles my room has been on though.
Truthfully, after having a smart meter for the past year or so (un knowing), I'm more scared of the cable company/google and my internet postings. Since I started growing I've always kept grow journals....those stopped at the beginning of this current grow, if I have questions to ask I try to post as few pics as possible as well as deleted any kind of photobucket pics. Not that it matters as they could easily track us down via IP but less exposure is better I'm learning, hopefully not the hard way.
Over the next couple days I plan on doing what I mentioned about that meter and seeing what I use, I'll post my usage when I get all the info together.