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Mitsubishi Electric’s Net Zero Energy Building Test Facility to be Completed on Oct. 14
Will support realization of more comfortable and energy-efficient indoor environments
TOKYO, October 1, 2020 – Mitsubishi Electric Corporation (TOKYO: 6503) announced today thatconstruction of its SUSTIE net zero-energy building (ZEB) test facility located on the premises of the company’sInformation Technology R&D Center in Kamakura, Japan, will be completed on October 14. In line with thecompany’s support for Sustainable Development Goals (SDGs), the facility will facilitate accelerated
development and testing of increasingly common ZEB-compliant energy -conservation technologies as well as
contribute to the realization of more comfortable and energy-efficient indoor environments.

SUSTIE ZEB Test Facility

SUSTIE’s logoZEBs are buildings that offer comfortable indoor environments while maintaining annual primary energy
consumption at or near zero through means such as thermal insulation, solar radiation shielding, natural energy
usage and facility efficiency. As a ZEB Planner1, Mitsubishi Electric is contributing to the adoption of ZEBs
by providing planning and business support to help companies develop their own ZEBs. The SUSTIE test
facility will be used for wide-ranging demonstrations and verifications to accelerate the further developmentof ZEB technologies. Research and development will be advanced in accordance with Mitsubishi Electric’s
ZEB+®2 philosophy. The concept for SUSTIE was developed in collaboration with Professor Shin-ichi Tanabeof Faculty of Science and Engineering at Waseda University in Tokyo; the SUSTIE was designed andconstruction supervised by Mitsubishi Jisho Sekkei. The name “SUSTIE” combines the words “sustainability”
and “energy” to express the idea of an office for researching and demonstrating energy conservation andcomfort.

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1 System operated by Sustainable Open Innovation Initiative, a public body in Japan, to register and certify corporations thatsupport ZEB implementation.
2 Mitsubishi Electric’s concept for enhancing building functionality, including services for maintaining value in terms ofproductivity, comfort, convenience and business continuity throughout a building’s lifecycle.

ZEB Technology Test Facility
Location
Area/construction
Investment
LaunchEnergyperformance

5-1-1 Ofuna, Kamakura, Kanagawa Prefecture, Japan(premises of Information Technology R&D Center, Mitsubishi Electric Corporation)
Building: 1,950 m2; Total floor space: 6,460 m2; 4-story steel-framed
4 billion yen (38 million USD) including 1.6 billion yen (15.2 million USD) for
demonstration equipment
Full-scale startup in January 2021
World-leading BEI3 primary energy consumption evaluation index of −0.06 (or 0.41
excluding solar power- energy generation) as midsized office building of at least
6,000 m2

3 Ratio of primary energy consumption at time of design compared to standard primary energy consumption.

Key Features1)

Energy conservation through application of high-efficiency facilities and natural energy, anddemonstration of effectiveness in work environments- Energy conservation through installation of a power conversion loss-eliminating D-SMiree® DC power
distribution system which supports natural energy usage, and high-efficiency facilities including aGran Multi® multi-unit air conditioner system, Lossnay® total heat exchange ventilation system,MILIE® LED lighting, AXIEZ® elevators, and industrial EcoCute heat pump water heating.
- Use of natural energy, such as cool tubes4 and natural ventilation control utilizing solar power andatriums.
- Deployment of nine demonstration rooms (offices) for verification of ZEB technologies in actual work
environments.
4 System for supplying external air to indoor areas using tubes buried underground to facilitate subterranean thermal

exchange (heating and cooling).

2)

Building-simulation and ZEB technologies for energy conservation and comfort- Building simulation technology for predicting building comfort and energy consumption to maintaincomfort and energy consumption within energy-conservation target-design values established duringbuilding’s design phase.
- Facima building management system and BuilUnity® Building Total Solution collect data from sensors
deployed extensively in SUSTIE to monitor and control air conditioning, lighting, entering/exiting andother facilities. Such data will be evaluated to further develop ZEB technologies.

3)

Workspaces that accommodate diverse workstyles- Provision of workspaces suited to individual workstyles via demonstration rooms (offices) for
purposes such as conversation, relaxation or concentration, which employees may use freely.
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- Enhanced comfort achieved with large north- and south-facing windows, natural green wall panels andmisola® sky-simulating lighting in various rooms.
- Support for COVID-19 countermeasures, including 1.5 times more seats than registered occupants,
circulation of air from outdoors, and contactless doors.
Future Developments
Technologies for achieving further building comfort and energy conservation will continue to evolve throughverification of, for example, systems that coordinate ventilation with the number of people in a room, andenergy management utilizing the Ville-feuille smart-city and building IoT platform. In addition, in response to
COVID-19, SUSTIE room and seat usage history will be monitored chronologically and ventilation will besupported with natural ventilation when appropriate. Also, after SUSTIE enters full-scale operation,
Mitsubishi Electric aims to obtain WELL5 certification for the facility.
5 Certification system conducted by Green Building Certification Inc. (GBCI) for space design, construction and operation as

well as human health to create better living environments.

Certifications SUSTIE Has Acquired to DateSUSTIE received a top BELS6 5-star (☆☆☆☆☆) rating from the Building-Housing Energy-Efficiency Labeling System(BEL), a third-party certification body in Japan, acquired BELS『ZEB』7 certification in 2019, and received a top “S”
CASBEE Wellness Office8 certification from the Institute for Building Environment and Energy Conservation in 2020.
6 System for evaluating building energy-conservation performance.
7 Highest ZEB ranking in BELS certification system.
8 System for evaluating office spaces in buildings in terms of specifications, capabilities and initiatives that support themaintenance and advancement of occupant health and comfort.
ZEB+, Gran Multi, Lossnay, AXIEZ, D-SMiree, and BuilUnity are registered trademarks of Mitsubishi Electric Corporation.
SUSTIE, misola, and Ville-feuille trademarks are pending. Facima is a registered trademark of Mitsubishi Electric Corporationand Mitsubishi Electric Building Techno-Service Co., Ltd. MILIE is a registered trademark of Mitsubishi Electric Corporationand Mitsubishi Electric Lighting Co., Ltd. EcoCute is an informal term used generically by power companies and water heatercompanies to refer to natural refrigerant CO2 heat pump water heaters.

###About Mitsubishi Electric Corporation
With nearly 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 satellitecommunications, consumer electronics, industrial technology, energy, transportation and building equipment.
Mitsubishi Electric enriches society with technology in the spirit of its corporate statement, “Changes for theBetter,” and environmental statement, “Eco Changes.” The company recorded a revenue of 4,462.5 billion yen(U.S.$ 40.9 billion*) in the fiscal year ended March 31, 2020. For more information, please visit
www.MitsubishiElectric.com*U.S. dollar amounts are translated from yen at the rate of ¥109=U.S.$1, the approximate rate on the Tokyo
Foreign Exchange Market on March 31, 2020

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