Mitsubishi Electric Corporation
Musashi Energy Solutions Co., Ltd.

Mitsubishi Electric and Musashi Energy Solutions
Sign Partnership and Co-Development Contract
Collaboration expected to advance carbon neutrality in the global railway industry(from left) Takayuki Tsuzuki, Senior General Manager, Itami Works, Mitsubishi Electric
Yoshio Nagatsuka, General Manager, Traction Systems Department, Itami Works, Mitsubishi ElectricKouji Takahashi, Chief Executive Officer, Musashi Energy Solutions
Masaru Maeda, Managing Executive Officer, Musashi Seimitsu Industry

TOKYO, May 15, 2024 – Mitsubishi Electric Corporation (Chiyoda-ku, Tokyo) and Musashi EnergySolutions Co., Ltd. (Hokuto City, Yamanashi Prefecture), a subsidiary of Musashi Seimitsu Industry Co., Ltd.
(Toyohashi City, Aichi Prefecture), announced today their signing of a partnership and co-development
agreement on May 14 for Innovative Energy Storage Devices to be incorporated into Innovative Energy
Storage Modules, and Battery Management Systems (BMSs) that monitor and control battery usage for railway
operators and rolling stock manufacturers.
Under the joint-development agreement, Mitsubishi Electric’s advanced technologies will be leveraged inInnovative Energy Storage Modules to upgrade Musashi Energy Solutions’ Innovative Energy Storage Devices
with functions for vibration resistance, insulation and waterproofing to be utilized in railcars and any othervehicles. The devices are expected to achieve the long service life and high safety levels of Hybrid
Supercapacitors (HSCs),* as well as high output density not possible with conventional lithium-ion batteries
and high-capacity density not possible with conventional HSCs. In addition, the modules are expected toprovide optimal output density and capacity density to absorb high regenerative power generated during railcar
braking and output running power.
The Innovative Energy Storage Module will enable power storage for hydrogen fuel cell hybrid trains, diesel
hybrid trains, overhead catenary-less trains, substation peak shaving, brake resistor replacement, etc., as wellas various railway solutions, both onboard and above ground, to support carbon neutrality.
*Energy storage device that improves energy density by using a carbon-based material to absorb lithium ions as negativeelectrode material in order to add lithium ions based on the double-layer capacitor principle

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In the future, Innovative Energy Storage Modules and BMSs combine technologies from both companies,
including Mitsubishi Electric technologies for manufacturing compact energy-saving power electronics
devices and for high-precision estimation of battery state of charge (SOC) and state of health (SOH), andMusashi Energy Solutions technologies for manufacturing pre-doped** Energy Storage Devices, a byproductof the company’s HSC expertise. The goal is to contribute to more sustainable railways by reducing both CO2emissions and power consumption as well as streamlining facilities. Mitsubishi Electric’s global sales network
will be used to sell Innovative Energy Storage Modules to railway companies overseas as well as in Japan.
Railway companies, especially in the EU, are strengthening their sustainability initiatives by introducing ecofriendly railcars equipped with energy storage technology to reduce both CO2 emissions and power
consumption, and other technologies for streamlining facilities and managing shifting power peaks. In addition
to railways, various infrastructure also require more stable and effective power utilization through the use ofadvanced energy storage technology.
Mitsubishi Electric has a strong presence in rolling stock electrical equipment markets in Japan and overseas.
Through initiatives such as the development and manufacture of energy-management systems for railways andthe company’s Station Energy Saving Inverter (S-EIV®),*** which makes effective use of regenerative energy,
Mitsubishi Electric is contributing to greater power-supply stability and sustainability for railways.
Musashi Energy Solutions has been a world-leading mass producer of HSCs since 2011. The company provides
space-saving and weight-reduction devices to meet market demands for rapid charging and discharging, energy
regeneration and peak-power assistance.

Innovative Energy Storage Device

Innovative Energy Storage Module

Size: W150mm × D15.8mm × H93.2mm

Expected size: W330mm × D400mm × H130mm** Technology for pre-storing lithium ions in the negative electrode to increase the device’s output and service life*** Enables excess regenerative power generated during braking but not usable by the vehicle to be supplied directly to theelectrical facilities of a nearby station

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Roles of Each CompanyCompanyRole
Engineering, development and manufacture of Innovative Energy Storage
Mitsubishi ElectricModules and BMS for sales to railways
Musashi Energy Solutions Engineering, develepment and manufacture of Innovative Energy Storage Devices
S-EIV is a registered trademark of Mitsubishi Electric Corporation.

###About Mitsubishi Electric Corporation
With more than 100 years of experience in providing reliable, high-quality products, Mitsubishi Electric
Corporation (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 5,257.9 billion yen (U.S.$ 34.8 billion*) in the fiscal year ended March 31, 2024. For
more information, please visit www.MitsubishiElectric.com*U.S. dollar amounts are translated from yen at the rate of ¥151=U.S.$1, the approximate rate on the Tokyo
Foreign Exchange Market on March 31, 2024
About Musashi Energy Solutions Co., Ltd.
Musashi Energy Solutions is a pioneer in the mass production of Hybrid Supercapacitor, which arecharacterized by high output, long life and high safety. It is a sustainable energy device that is expected tomake a great step towards the realization of a carbon-neutral society.
Musashi Energy Solutions Website: https://www.musashi-es.co.jp/en/
About Musashi Seimitsu Industry Co., Ltd.
Musashi Seimitsu Industry Co., Ltd. is a global auto parts Tier1 company for automobiles and motorcycles,
whose headquarters is located in Toyohashi, Japan. It has 35 manufacturing sites spreading across Europe,
North and South America, China, and South East Asia. Musashi specializes in designing, developing andmanufacturing products such as Differential Assemblies, Transmission Gears and Assemblies, and Linkageand Suspension (L&S) products especially for the future automobiles including electric and autonomousvehicles. Musashi is also generating and expanding new businesses through open innovation with global
startups to contribute to the SDGs in wider business domains. Musashi AI, a leading-edge AI technology
subsidiary to lead Industry 4.0, is one of the examples.
Musashi Website: https://www.musashi.co.jp/en/
Customer Inquiries
Itami Works
Mitsubishi Electric Corporationenergy-storage@pd.MitsubishiElectric.co.jp
Musashi Energy Solutions Co., Ltd.
8565, Nishiide Oizumi-cho, Hokuto-shi,Yamanashi 409-1501, JapanTEL 0551-38-8008 FAX 0551-38-8009
Media Inquiries
Public Relations Division
Mitsubishi Electric Corporation
prd.gnews@nk.MitsubishiElectric.co.jp
Musashi Seimitsu Industry Co., Ltd
39-5 Daizen, Ueta-Cho, Toyohashi-shi, Aichi
TEL 0532-25-8111 FAX 0532-25-2753
INFO_MSI@musashi.co.jp
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