Part of the problem is the old myth that it costs more to cool down a house in the evening when you get home than it is to run the A/C at your favorite temperature all day. When you are talking about these McMansions with five or six totally unused rooms that are cooled 24/7 it adds up fast.
I expect to see some sort of electricity rationing within a decade.
A household that uses more than a megawatt/hr a month per person is starting to get unreasonable and that is not an unusual usage.
