Sustainability Initiative
Mitsubishi Jisho Sekkei Inc. was commissioned by the Japan Real Estate Investment Corporation (JRE) to examine the possibility of reducing CO2 emissions for its entire portfolio and to identify properties that could be converted to net-zeroenergy buildings (ZEB)*1 while carrying out concrete examinations aimed at converting such properties to net-zero-energy buildings. Specifically, Mitsubishi Jisho Sekkei proposed methods for reducing CO2 emissions by analyzing building age, building envelope performance, building scale, and air-conditioning and lighting systems. Based on the analysis results, JRE set a target of converting between five and 10 of its properties to net-zero-energy buildings by 2030. As a first step toward achieving this target, JRE acquired ZEB Ready*2 certification at the design stage and a five-star rating under the Building- Housing Energy-efficiency Labelling System (BELS) for its Higashi-Gotanda 1-Chome Building.
*1 Buildings with annual primary energy consumption of net zero or less
*2 As advanced buildings in anticipation of ZEB certification, buildings awarded ZEB Ready certification are those with primary energy consumption that has been reduced more than 50% compared with standard primary energy consumption, excluding renewable energy.
View of Higashi-Gotanda 1-Chome Building