It is not normal, generally a month of electricity about 100 are very high, you are a family, or a person, my family is a family, there are 4 people, hot day almost 24 hours to play air conditioning, with fans, rice cookers, smoke hood, computer, electric piano, children's lamp, oven, quick pot, microwave oven and other normal household appliances, I bought 520 electricity word, It took almost half a year