Depending on where you live it would be around 20 - 27 dollars a day per 1000 watts.

I pay around .059 cents per kilowatt hour, my HPS uses about 1075 watts to run the light per hour, im really stoned and tired but below would be the math.

30(.059 x 12) 21.24$ per 30 days

30(.059 x 18) 31.86$ per 30 days.

If you turn your fridge on really low, and quit opening it so much. Dont use 1/2 the lights you don't use, since you really don't need em. Don't sleep with the tv or radio on, and do laundry at the laundry mat. Also be very careful with hot water, a hot water heater can use like 5000 watts per element easy....


I promise you friend if you do what I describe in the last paragraph you will probably have a SMALLER electric bill after you are being more aware of standard electrical usage / cost since your lights are on and you would like to stay " down low ".

Peace and Best Wishes

Ps Generators and Batteries suck to maintain. A good ballast isnt much more than 250$