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Thread: Cool white energy costs

  1. #1

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    Cool white energy costs

    I have two 15 watt cool white fluorescent tubes on my 5 gallon terrarium. I've been wondering how much it's costing to run these lights (30 watts total) for 14-15 hours. The reason I ask is that I've downsized my entire CP collection down to a windowsill and this particular small terrarium in order to cut down on energy costs.

    Does anyone have a ballpark estimate?

  2. #2
    pingman's Avatar
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    I would say pennies! I have over 800 watts of Fl!
    Please check my website for photos:
    http://www.flickr.com/photos/minicatt/sets

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    Zero's Avatar
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    I think around $.04 a day, $1.20 a month, and $14.40 a year.
    Why did you downsize?
    Did you have a LARGE amount of lights?
    I have 4 40 wt, 3 25 wt cpf, and 2 2ft bulbs.
    cost me $5.00 a month. all I need to do is skip a couple of morning coffees or get my bottled water from my ro filter instead of buying it and I have saved more than enough to pay for my plant lighting for the month.
    peace,
    Zero
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    Ryan + Sara
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    I think I figured out one time it would cost about $5 or so a month to run 4 40watts 24 hours a day.
    CPsinSC
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    Hello, I must be going... Not a Number's Avatar
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    If you really need to know you can buy an energy usage monitor like the Kill-A-Watt EZ from P3 International.

    Otherwise look on your last energy bill and find a figure like "average cost per kWh" and do the math from that.

    http://en.wikipedia.org/wiki/Watt-hour
    Grand Hotel... always the same. People come, people go. Nothing ever happens.

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    Dang. I have twelve in the basement. I also have two 400 MH and one 1000 which I have never hooked up. Lat I knew, a 1000 MH cost about $30/month.

  7. #7

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    I'm still a bit apprehensive about setting up my terrarium at the new apartment, because I can't afford to get charged up the wazoo. My current terrarium has two 30 watt CFL and a 20 watt tube, for a total of 80 watts running at about 14 hours a day.

    I'm looking at the electric bill and it's confusing as hell. Do you guys still think it'll be under five dollars a month to run these lights?

    Edit: I managed to use a formula I found online and it seems that running 80 watts of light for 14 hours a day will only cost around $2.40 a month, which is more than manageable. I hope I did the equation right, seeing as math and I have never been close friends.

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    pingman's Avatar
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    Here's the math:
    80 watts x 14 hours =1120 watts per day
    or 1.12 kilo watts per day.
    On you bill, you have a charge per kilowatt. Multiply that by # of kilowatts and you get your cost per day!
    Peter.
    Please check my website for photos:
    http://www.flickr.com/photos/minicatt/sets

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