It's not gonna be that bad. However, there are many ways you can start saving money. For instance, stop using the air conditioning and use fans and blankets instead. Make sure you always turn your lights off when you leave the room, etc.

Let's say they charge $0.07 per kilowatt. (400 x 24) x 30 = 288000. Multiply that by 0.001 (converting to kilowatt) and you have 288. 288 x 0.07 is $20.16, which is the cost of running a 24-hour setup.

I'm gonna skip the math part for 18/6, so let's just skip ahead to the answer. It would be $15.12 a month, assuming your electric company charges .07 per kilowatt.

Math is cool.