31 January 2014
Primary energy consumption in the commercial and residential building sectors in Japan represents approximately
34 % of the country’s total energy consumption, and has been increasing steadily. With the aim of decreasing
energy consumption, a new building energy standard was implemented in 2013: the Government has
announced that it will become mandatory by 2020. This article presents an outline of the standard and how energy
performance of heat pumps is evaluated in it.