yet another halide monthly cost question

[clown-x]

I tried doing the search but everytime i do it says not available, so sorry if this question is redundant.

I read somewhere that upgrading to two 250w halide bulbs cost this guy like $80 a month to run the tank.. that seems a bit high to me. So my question was does anyone know roughly what it would cost to run this:

(2) 250w 10,000k halides
(2) 96w actinics

This is what I am thinking about buying. Right now I am running 440w with the IceCap reto VHO kit. Can is possibly be THAT much more a month to run?

Thanks for any help. I know cost varies from area to area I'm just looking for general. I live in VA.

 

[Scuba_Dave]

Right now you are using 440w

You will be upgrading to 694w
About a 50% increase - as simple as that
Unless he ran the (2) 250w 24 hours a day I don't see how it cost that
I have (3) 250w MH & a 175W MH & it doesn't cost me $80 a month

925w x 8 hours a day = 7400w per day
X 30 days = 222,000 = 222 kw * .15 per kw = $33.30

unless I'm way off.....

Pumps & heaters are what cost $$

 

[clown-x]

thank you, that was very helpful. I figured the info I had was incorrect, but I'm not experienced enough in this hobby yet to know for sure.

thanks again!

<a href=showthread.php?s=&postid=6781566#post6781566 target=_blank>Originally posted</a> by Scuba_Dave
Right now you are using 440w

You will be upgrading to 694w
About a 50% increase - as simple as that
Unless he ran the (2) 250w 24 hours a day I don't see how it cost that
I have (3) 250w MH & a 175W MH & it doesn't cost me $80 a month

925w x 8 hours a day = 7400w per day
X 30 days = 222,000 = 222 kw * .15 per kw = $33.30

unless I'm way off.....

Pumps & heaters are what cost $$

 

[pvtschultz]

It'll be higher than that if you have magnetic ballasts. The ballasts use 290W each - 580 for the halides and then another 200 W for the PCs = 780 W total.

Personally, I run my VHOs for 14 hours and then my halides for 12 hours (I only have 175W'ers). So for your sake, I'll do it hour by hour:

580 W X 1 hr X 30 days = 17.4 kWh/(month-hour)
200 W X 1 hr X 30 days = 6.0 kWh/(month-hour)

So let's say 12 hours PC, and then 10 hours MH for calculation's sake.

17.4 kWh/(month-hour) X 10 hrs = 174 kWh/month
6.0 kWh/(month-hour) X 12 hrs = 72 kWh/month
Total = 246 kWh/month

Personally I pay $0.08/kWh so you'll have to check your bill.

at $0.10/kWh that would be $24.60/month.
at $0.15/kWh that would be $36.90/month.

You are running 440W now. I ran my VHOs for 14 hours, but the same is true as before.

440W X 1hr X 30 days = 13.2 kWh/(month-hour)
12 hours/day X 13.2 kWh = 158 kWh/month
158 kWh/month = $15.80/month @ $0.10/kWh
158 kWh/month = $23.70/month @ $0.15/kWh

 

[clown-x]

awesome.. thank you very much.