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Thread: Electricity bill 600watt MH

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    Default Electricity bill 600watt MH

    Hi, I know I won't get an exact answer but if I follow the standard growing process using the lighting guides for times on this forum then how much would you expect my standard elecrticity bill to increase by using a 600 watt MH and HPS system?? 20%? 50%? or more??

    Thanks in advance.

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    I reckon I pay 10-15 quid a week more on lekky on top of normal (nothing when compared to how much i could be spending on smoke ), on a rip-off-meter with 600 in veg stage, pure guess though but its a fair whack, not so bad in flower with it being on only 12 hours.




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    i've got two of those lights,a large extracter and a medium fan in room going and i reckon its costing me about 20 or 25 quid a wk.(also on rip off meter! and veg stage)

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    You need to know your price of electricity per kilo watt hour, I'll go off my price at 13p.

    600w mh/hps + 15% for losses = 690w

    on mh 18/6 its 18(hours)*690(watts)*7(days)/1000(watts to kw)*0.13(kwh) = £11.30


    on hps 12/12 its 12(hours)*690(watts)*7(days)/1000(watts to kw)*0.13(kwh) = £7.53
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    Quote Originally Posted by GSXRnutter View Post
    You need to know your price of electricity per kilo watt hour, I'll go off my price at 13p.

    600w mh/hps + 15% for losses = 690w

    on mh 18/6 its 18(hours)*690(watts)*7(days)/1000(watts to kw)*0.13(kwh) = £11.30


    on hps 12/12 its 12(hours)*690(watts)*7(days)/1000(watts to kw)*0.13(kwh) = £7.53
    Thanks for doing the maths, I reckon I'm on about the same as you, I'll dig out an old bill and check it over. Still at propagation stage atm so I'll be gearing myself up in the next week or so.

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    I'm on a meter but it costs me literally fuckall to have a CFL grow going, my lecys 9p per kwh even after just having my meter replaced, it costs me £2.50 to run everything a week in my flat ontop of a CFL grow, don't know about HPS though I'll find out when I get some next month. In the end though doesn't matter if it costs me £20 a week with hps, I'm spending about £50 quid a week at the dealers now anyway!

  7. #7
    kingskiner Guest

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    i have a 400w hps on 18/6 cycle on a rip off meter (being changed jan 6) with british gas and costing me roughly £1.50 max a day

    still having to buy weed aswell so is costing a fortune

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