8000x12x30=KWH for the month. Then you just have to find out how much your electric company charges per KWH.

Probably about 3 grand a year extra. At $.10 per KWH it comes to about $3,500 per year which is around $300 extra per month.

Now, if you are going into business you better get a lot better at math.

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jakester Reviewed by jakester on . electric cost iam in the process of setting up two 10x10 tents i will be running a total of 8 1000 w hps and 4 fans.does anyone know appx what the elect bill would be each month?also running at night 12on 12 off.thx Rating: 5