Yes, when I just shifted into my 4-rm flat, my PUB was $180 and more. I almost die of heart attack. That's the time when I on my aircon everynight. I even get the PUB pple to come down to check my meter. He told me that I hv computer, tvs, video, electric water pot, etc, etc........Immediately, I stop using aircon and use fan instead. I also bought a device that helps to reduce the electricity. After cutting down my aircon usage and with the help of the device (dont know whether it really helps or not).
Now, I am more cautious in my new house. Anyway, I dont need to on aircon as it is very windy.