Im not endorsing the lights or anything (ive never used them) but this is an impressive op. YouTube - Commercial Grow using LED Grow Lights where the hell did they find that guy doing the voice overs...
seems like it would take years to actually recoup on electricity and other costs when you factor in the actual ridiculously high cost of good LED lights.
But when you think how much it would cost for installing ventilation and AC nevermind running costs in a big warehouse I think it makes sense especially if you are getting better results I bet that guy gets one hell of a discount for bulk and the fact hes letting them use his grow for promo purposes.