Mitsubishi Electric Facility Receives Net Zero Energy Building Certification

First medium-scale office building to be certified in Japan while still under construction

Mitsubishi Electric Corporation announced that its envisioned Net Zero Energy Building Test Facility has become Japan's first medium-scale (over 6,000 m2) office building under construction to receive a top-level BELS 5-star rating(☆☆☆☆☆) and Net Zero Energy Building (『 ZEB』) certification from the Building-Housing Energy-efficiency Labeling System. The building is under construction and is projected to have zero net energy consumption.

Mitsubishi Electric is constructing the Net Zero Energy Building Test Facility in Kamakura, south of Tokyo, to develop and demonstrate ZEB-related technology. The facility is scheduled to start operating in September 2020.

Mitsubishi Electric is promoting technical developments based on its ZEB+ concept of constructing and upgrading buildings over their lifecycles for environmental efficiency, energy savings, productivity, comfort, convenience and business continuity. 

The certification recognizes the facility's projected reduction in energy consumption by 103% (includes production of photovoltaic energy) compared with its surrounding region's average consumption levels, measuring total energy consumption for air conditioning, ventilation, hot water, lighting and elevators based on energy conservation standards introduced by Japan's National Institute for Land and Infrastructure Management in 2016. To qualify for certification, Mitsubishi Electric optimized design conditions for the entire construction process, maximized the efficiency of equipment and systems to be installed in the facility and introduced ZEB-based solutions for air conditioning, lighting and photovoltaic systems. 

Going forward, the company aims to accelerate its development and application of ZEB-related technologies to contribute to the achievement of the United Nations Sustainable Development Goals and the realization of greater energy savings and more comfortable living spaces, as well as contribute to more convenient office environments under its proprietary ZEB+ concept.

ZEB+ is a registered trademark of Mitsubishi Electric Corporation.