Just a small one – this beautiful piece of kit runs at between 35 and 40 watts, almost nothing! I shall see what it can do. The plan is to test it with soil and in hydro, to see what can be done with an entire grow running at under 60 watts, without loads of equipment.
This is an amount of power that you really don’t need to worry about showing up on your bill.
I’m going to be concentrating on single plant auto grows for the time being, for the sake of simplicity.