"The Japanese are among the most frugal energy users in the industrial world. On average, households in Japan consume a modest 8,400 kilowatt-hours of electricity a year—despite most buildings having surprisingly poor thermal insulation. By contrast, American homes burn an average of 13,400 kilowatt-hours annually in order to maintain a shirt-sleeve environment year round."
Source: Difference Engine: Life without nukes
Apr 8th 2013
By N.V.
The Economist