If i remember this crap rightly then 1000watts is equal to 1Kilowatt hour which means that if you run a 1000w hps for 12 hours then youve used 12kilowatts. With every electricity tariff and bill they will tell you how much you pay for each kilowatt, currently my power company charges me 17pence a kilowatt, so for that 12hour period ive used 12kilowatt hours x 17pence which gives me a grand total of £2.04 a day cost to run a 1000watt hps.
Now weekly i just multiply that £2.04 by 7 to give me a weekly cost of £14.28 for my 1000watt hps, which is pretty damn cheap considering how much weed it produced and at a street value of £10 a gram and a flowering period of ten weeks thats just under 15grams of lost profit from a potential crop of 600 to 1000grams approx 2-3% of your final yeild.
Firstly check what im saying is right then go do some maths and get back here and answer your own question.
Cant find what they are charging you for a kilowatt hour then just call them up and ask, by right this information must be given to the customer and absolutly no one will suspect your a weed grower.
This buissness will turn you into a semi skilled electrition, biologist, chemist, physisist, geneticist, builder and most of all a fucking ninja ass clever mofo
