Abstract
The amendment and adoption of new criteria for the Energy Conservation Act in 2013 as a short term initiative and the formulation of a Net Zero Energy Building (ZEB) vision as a medium and long term initiative have been included within the “Schedule for Promotion of Housing and Methods of Living for a Low Carbon Society” adopted by the government. As there is an even greater need for energy conservation and lowering the peak electricity demand after the Great East Japan Earthquake, the need for electricity conservation in existing buildings, which has not been positively implemented very much in the past, and energy conservation and converting existing buildings to ZEBs in the medium and long term is increasing. Various energy efficiency technologies were introduced into the K Building,1) which was constructed over 20 years ago, to convert it into a ZEB, and the effect was quantified in the operational stage with the aim of generalizing the technologies used.
