Led light

Look at your last or next power bill or call them up and find out your price per kilowatt hour or kw/h.

A kilowatt is 1000watts for one hour, so a light that draws 135 watts will cost 0.135 x the price of a kilowatt hour to run for one hour.

Here say a kilowatt hour is 20pence/cents then 0.135 x 20 = 2.7pence/cents an hour to run.

For 24 hours thats 2.7 x 24 = 64.8pence/cents a day to run

and then 64.8pence/cents x 7 = 453.6pence/cents or 4.54pounds sterling/american bucks a week

and anally 4.54 x 52 = 236.08sterling/bucks a year..... or so so :-)
 
PURPLEB3RRYKUSH said:
Yeah 2 would be good for that size room, 1 wont cut it unless 1 plant grow
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Kingrow1 said:
Look at your last or next power bill or call them up and find out your price per kilowatt hour or kw/h.

A kilowatt is 1000watts for one hour, so a light that draws 135 watts will cost 0.135 x the price of a kilowatt hour to run for one hour.

Here say a kilowatt hour is 20pence/cents then 0.135 x 20 = 2.7pence/cents an hour to run.

For 24 hours thats 2.7 x 24 = 64.8pence/cents a day to run

and then 64.8pence/cents x 7 = 453.6pence/cents or 4.54pounds sterling/american bucks a week

and anally 4.54 x 52 = 236.08sterling/bucks a year..... or so so :-)
Click to expand...
Ok thanks
Click to expand...
 
Kingrow1 said:
Look at your last or next power bill or call them up and find out your price per kilowatt hour or kw/h.

A kilowatt is 1000watts for one hour, so a light that draws 135 watts will cost 0.135 x the price of a kilowatt hour to run for one hour.

Here say a kilowatt hour is 20pence/cents then 0.135 x 20 = 2.7pence/cents an hour to run.

For 24 hours thats 2.7 x 24 = 64.8pence/cents a day to run

and then 64.8pence/cents x 7 = 453.6pence/cents or 4.54pounds sterling/american bucks a week

and anally 4.54 x 52 = 236.08sterling/bucks a year..... or so so :-)
Click to expand...
Cheers, i can run stats on my ripoff power company, my bills already 1500 every 3 months without my grow going.
 
very very little. i run a 450w reflector series viparspectra and a 45w rootfarm led and notice maybe $4 or so difference a month on the hydro bill. not including the fans etc. ehich will take more thsn these lights.
 
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