electricity bill

about how much do 400w lights add to your bill a month? what about 250w?

I know there is a formula out there but in my experience im jumping my bill about $25 to $30 with pump, 400watt, bubbler, and fan going. hopefully this helps

All depends. What else you running with the light?

-Hank.

The electric company charges you by kWh (kilowatt hours). 1 kWh means that you use 1000 watts of energy for one hour. It's about 11 cents for 1 kWh. So say you're using a 400 watt bulb for 12 hours a day for 30 days you take .4kilowatts * 12 hours * 30 days * $0.11 = $15.84. A 250 watt bulb would be .25kilowatts * 12 hours * 30 days * $0.11= $9.90.

motoracer110 said:

I know there is a formula out there but in my experience im jumping my bill about $25 to $30 with pump, 400watt, bubbler, and fan going. hopefully this helps

Click to expand...

Perfect example.

To add to what this man said you can easily save enough electricity from other areas of your daily life to make the jump in useage neglegable,replace all home lighting with 12 watt cfl's,turn down the refredgerator one notch & turn off your pc when not online,also turn off any electrical devices that have a digital clock or standby mode,anything with a little red light that stays on when the device is turned off is standby mode.

Do these simple things & most likely even with the added cost of the lil 400 watter the monthly bill will be lower than it is now without the hid light.

(bulb wattage) x (hours on) x (cots per kw) = (a number)
(a number / 1000) = (rough dayly cost)

(rough daly cost) x (about 28 days in a month) = (rough cost for running that bulb a month)

m aybe i can be of assistance: kwh ussuage calculator

I knew the math but never bothered to calculate the cost. Maybe it's time to go to 18/6. Running a 600 watter 24/0 can be expensive.