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Mitsubishi Electric's “SUSTIE” Net Zero Energy Test Facility Achieves
Platinum Level WELL Certification
The first facility in Japan to receive the highest level of BELS, CASBEE Wellness Office and WELL
Building Standard certifications

Net Zero Energy Test Facility “SUSTIE”

WELL CERTIFIED PLATINUMTOKYO, July 29, 2022 – Mitsubishi Electric Corporation (TOKYO: 6503) announced today that its“SUSTIE®” Net Zero Energy Test Facility has obtained Platinum-level WELL Building StandardTM
certification, an international certification that evaluates the extent to which a building environment supports
the wellbeing of its occupants.
It is expected that improvements to office environments will become more and more important in the future
not only as a means of improving the health and productivity of employees but also as a factor when recruiting
new staff. The SUSTIE facility has already received a top-level BELS 5-star rating (☆☆☆☆☆) and Net Zero
Energy Building (『ZEB』) certification from the Building-Housing Energy-Efficiency Labeling System inJapan, and the highest level “S” rating from the CASBEE Wellness Office. These confirm that SUSTIE has
achieved a high level of energy-saving and offers a comfortable working environment.
In addition to these recognitions, by being accorded Platinum status WELL certification—the highest level—
SUSTIE has been certified to world standards as a building that enhances the health and comfort of its
occupants. It is the first facility in Japan to obtain BELS, CASBEE Wellness Office, and WELL certification

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at the highest levels*.
In addition, in July 2021 SUSTIE has achieved the global standard WELL Health-Safety RatingTM**, plannedin response to the spread of the new coronavirus infection, certifying it as a facility that is managed andoperated in a way that shows concern for people's health, safety and welfare.
Mitsubishi Electric will continue to pursue further improvements in the efficiency of building equipment andenergy management, and in comfort and health levels, aiming to contribute to the development of a sustainable
society in order to realize the ZEB+® concept, an approach the company is advocating that encourages theupgrading of buildings with facilities that promote productivity, comfort and convenience, and support
business continuity.
Overview of WELL certification and evaluation details
WELL certification is an evaluation system that aims to create better living environments by encouraging
consideration of people’s health during the design, construction, and operation of facilities. Certification isprovided by a third-party evaluation organization, Green Building Certification Inc. (GBCI). As of July 4,2022, 1,357 WELL certifications have been issued in 44 countries around the world, with 26 issued in Japan,
and it is becoming increasingly recognized as a global index for the measurement of the direction andachievement of health management and working style reform.
In “WELL v1” ***, under which the SUSTIE facility acquired platinum certification, the office environment isevaluated based on a maximum of 100 items across seven categories: “air”, “water”, “nourishment”, “light”,“fitness”, “comfort” and “mind”, as well as up to five items in the category of "innovation". The criteria include
requirements that are mandatory for certification, and additional factors used to gauge the quality of anenvironment, with silver, gold, or platinum awards being made depending on the assessed level of compliance.
SUSTIE met the criteria in all key areas, scoring more than 80% of the maximum available points and thereby
obtaining the highest “platinum” rating.
Future Plans and Prospects
Mitsubishi Electric will leverage SUSTIE as a Net Zero Energy Test Facility and conduct research todemonstrate the effects of health promotion and productivity improvement during actual use of the building.
SUSTIE and ZEB+ are registered trademarks of Mitsubishi Electric Corporation.
WELL Building Standard and WELL Health-Safety Rating are trademarks of IWBI.

* According to Mitsubishi Electric’s research as of July 29, 2022** An evaluation system of the protection offered by buildings and facilities against infectious
diseases such as the new coronavirus and other emergencies, based on global standards(Right: WELL Health-Safety Rating seal)*** An evaluation system, version 1.0 of which was officially released in October 2014 by theInternational Well Building Institute (IWBI), a public interest company, the first version tobe released following creation of the WELL standards were created. The latest version isversion 2.02/3

###Mitsubishi Electric Corporation
With more than 100 years of experience in providing reliable, high-quality products, Mitsubishi ElectricCorporation (TOKYO: 6503) is a recognized world leader in the manufacture, marketing and sales of electricaland electronic equipment used in information processing and communications, space development and satellite
communications, consumer electronics, industrial technology, energy, transportation and building equipment.
Mitsubishi Electric enriches society with technology in the spirit of its “Changes for the Better.” The company
recorded a revenue of 4,476.7 billion yen (U.S.$ 36.7 billion*) in the fiscal year ended March 31, 2022. For
more information, please visit www.MitsubishiElectric.com*U.S. dollar amounts are translated from yen at the rate of ¥122=U.S.$1, the approximate rate on the Tokyo
Foreign Exchange Market on March 31, 2022

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