texastiger707
Active Member
I am about to buy a 250 watt light for my small grow tent. I am going to try a 12/12 from seed grow. I was just curious on how much a month would a 250 watt light would add to the electric bill here in california?
How much does a 250watt light cost on electric bill a month?
- Thread starter texastiger707
- Start date
drolove
Well-Known Member
this ^^^^^^^^^
racerboy71
bud bootlegger
look at your bill, find out what you pay per kw/ hour, or kilowatt hour.. probably around say $.15 per kw/h.. take the $.15 x's it by how many hours a day you use it, x's that by how many days in the billing period, 30, then divide by .75 as a 250 is only 1/4th of a kw...
it would look like this.. $.15 x 18 hours a day, x's 30, divided by .75.. let me do the math here.. about $20.25 or so..
just take your numbers and plug them into the equation to get an exact number..
it would look like this.. $.15 x 18 hours a day, x's 30, divided by .75.. let me do the math here.. about $20.25 or so..
just take your numbers and plug them into the equation to get an exact number..
racerboy71
bud bootlegger
damn you, lol.. you guess about $20 a month, i solve emc2 and get $20.25, lol.. nice one..
racerboy71
bud bootlegger
oh snap, i missed that part in my last post.. you, that sounds about right to me as when i did it i was using 18 hours a day and not 12..
texastiger707
Active Member
ok thank you everyone for your replies
Silicity
Well-Known Member
or this can be done by checking the labels of said electronic object, check the wattage, and use a calculator.
best 30$ ive ever saved, (not being a dick and sorry if it comes off like that id prefer friends and not enemies)
dbkick
Well-Known Member
a lot of things would have to be factored in, I just plug my entire tent into the killawatt, the tent power consumption varies as fans and lights cycle on and off, would be a lot of math. best hours I've saved.
dimebong
Well-Known Member
This is best to get an accurate reading.
The ballast consumes power on top of what the bulb consumes. Most people say it's about 10-15% of the bulbs total wattage being consumed
by the ballast itself on top of the 250w going to the bulb.
So according to that, the max wattage used by the system would be about 290w
I just use a usage calculator instead of calculating it manually.
You get your electricity tariff from the bill they send you in the mail
and enter it all into the calculator. My tariff is $0.21 per kW an hour.
It would cost me a max of $20 a month to run a 250w lamp 12 hours
a day.
http://www.electricity-usage.com/Electricity-Usage-Calculator.aspx
Digger Dave
Member
Here in Michigan,it cost me for a 1000w $50 a month, now that's with all the extras in the room too.
texastiger707
Active Member
thank you very much.