I grew with hps for 5 years and am about 18 days into flower with my first LED grow (photoperiod plants), very stoked so far. The temps are so easy to keep into check. I haven't had an electricity bill come in yet for a full month of use so I can't comment there yet. I also haven't gotten a kill-a-watt to check actual electricity draw but I plan on doing that soon. Good idea getting two panels instead of just one large one, I kind of wish I went with 2 smaller panels, or perhaps even two of the one I bought for more floor coverage, but that can be remedied![]()
I know this is a little late. I figured out what exactly a 300w 3w * 100 Led Panel costs in electricity. There are two different prices in my area .045 Cents, and .092 per kw/hr so I did it for the more expensive. A 300w LED only draws 170w so 170* 20 Hours a day* 30 Days a month = 102000 watts / 1000( Electricity is sold is in kilowatts = 102 Kilowatts) * .092 cost per kw/hr = $9.38 per Month You can just find out what your panel draws, and then go to your power companies web site to find the price per kilowatt