can someone tell how much more a month my electric bill would be?

that bear smokey

Well-Known Member
ok I wanna buy a 250 watt hps or a 400 watt hps. so I was curious if someone could help me see how much more a month would my electric bill would rise? I live in california and its like 0.12 kw here.
 

RollupRick

Active Member
If you run the 250 watt, 24 hours a day, the cost per month would be...

Cost per kW: 0.12
1 kW = 250w x 4 (hours)
24 hours in a day / kW = 6 kWh per day usage.

Cost would be 0.12 x 6 per day = 0.72 per day

That is $5.02 a week.
That is $20.08 per month.

Thats peak, will be less if you're 12/12 or 18/6 etc.

The 400w, rather than do a seperate sum, 400w is around 38% more powerful than the 250w. Thus:

Per week is $5.02 * 1.38 = $6.93
Per month is about $27.00
 

that bear smokey

Well-Known Member
If you run the 250 watt, 24 hours a day, the cost per month would be...

Cost per kW: 0.12
1 kW = 250w x 4 (hours)
24 hours in a day / kW = 6 kW per day usage.

Cost would be 0.12 x 6 per day = 0.72 per day

That is $5.02 a week.
That is $20.08 per month.

Thats peak, will be less if you're 12/12 or 18/6 etc.

The 400w, rather than do a seperate sum, 400w is around 38% more powerful than the 250w. Thus:

Per week is $5.02 * 1.38 = $6.93
Per month is about $27.00
ok thank you. I am growing 2 plants. I am trying my 1st 12/12 grow.
 

RollupRick

Active Member
Those numbers are give or take, but should be the correct ballpark.

Half those numbers for a 12/12 cost.
 

that bear smokey

Well-Known Member
It will be money well spent. Good luck man.
I hope so. I have been growing with CFLs and I just wanna move up the food chain. I have 2 female plants. I have purple wreck and fruity juice. I just planted in soil 2 days ago and waiting for them to sprout above the soil. I will be vegging under floros and I wanna flower using a hps that I will be buying.
 
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