Mitsubishi Estate Completes Leading-Edge Eco-Friendly Office Complex in Marunouchi

Copyright Mitsubishi Estate Co.

On February 2, 2012, Mitsubishi Estate Co., a major Japanese real estate company, announced the completion of its Marunouchi Eiraku Building, a leading-edge environmentally friendly office complex with restaurants and shops, in the Marunouchi Area in Chiyoda Ward, Tokyo on January 19. With a number of environmental features, the building has been certified by Japan's Ministry of Land, Infrastructure, Transport and Tourism as a model project that reduces carbon dioxide (CO2) emissions.

The complex has large-scale rooftop photovoltaic panels with a maximum generation capacity of 100 kilowatt-hours, while using light-emitting diode lights as standard lighting in its office spaces, which is expected to reduce electricity consumption by about 38 percent compared with fluorescent tubes used in conventional office buildings. To reduce heat load, the building employs a highly insulating air flow window system, louvers and eaves, and high-performance glass. As a measure to mitigate the heat island effect, it uses a wall greening system, cool-roof paint, and a district heating and cooling system.

The building has 27 above-ground and four underground floors, with a total floor area of about 139,800 square meters. In terms of disaster management, it has ensured its earthquake-proof performance based on proprietary seismic standards, making itself 1.5-fold more earthquake-resistant than ordinary skyscrapers, to allow its tenants to stay in the building even after an earthquake with an intensity of seven on the Japanese seismic scale. It also has an emergency generator and a well in case electricity and water are cut off.

Posted: 2012/04/25 06:00:15 AM