The A/C unit eats it up big time. In the US there is a tax credit for buying an A/C unit that is of certain effecientcy. Plus if you got credit then you can finace the shit and only need about 2 g's to get going. Expect to pay 1-175 mo. for about 3 years. However the unit will be of much higher effecientcy. Down side. If you are not in certain states (sounds like slavery) than you gotta move your plants away from switchbox/breaker, if heat and cooling combo then keep the attic in mind. Also peek hours are at night time, 3-10 pm for most. Find out what your peek times are and adjust your hours accordingly. At one time in some places having forced labor was right and totally christian. Hahhaha, the times are a changing. And lots a folks need legit jobs, lil boost in the economy....come on.