TOKYO, April 20, 2026 - Mitsubishi Electric Corporation (TOKYO: 6503) announced today that it will launch a proof of concept (PoC) project for a railway energy management solution (railway EMS) to be tested on the tram network in Krakow, Poland, beginning in April 2026. The project will combine Mitsubishi Electric's Serendie^TM digital platform and energy storage systems (ESSs) for the efficient capture and use of surplus regenerative braking power during tram operations.

Support for the project will be provided by Miejskie Przedsiębiorstwo Komunikacyjne S.A. w Krakowie (MPK), the public transport provider of the Krakow city; Zarząd Dróg Miasta Krakowa (ZDMK), the tram rail and road authority; and MEDCOM Sp. z o.o., Mitsubishi Electric's capital partner company based in Poland.

Given Poland's rapid economic growth and the resulting expectation of increased electricity demand, the recent surge in fuel prices has raised concerns about rising energy costs. Railway operators are striving to reduce power consumption, including during peak power spikes, as well as reduce carbon emissions, improve energy efficiency and stabilize the voltage supplied to railcars via overhead catenary systems.

In the first stage of the project, Mitsubishi Electric will use its railway EMS to analyze power consumption across the tram network, assess the availability of surplus regenerated power, and evaluate the stability of the overhead catenary voltage. In the second stage, this data will be used to verify reductions in electricity consumption through ESS deployment and stabilization of overhead catenary voltage. The results will be visualized through mapping of surplus regenerated energy, analysis of operational benefits and identification of optimal locations for ESS installations. In the final stage, Mitsubishi Electric will install ESS units along tram lines to store regenerative braking power for redistribution to other trams in operation.

The project will use ESS equipped with the Mitsubishi High Power Battery (MHPB^TM),¹ an innovative energy storage module. By measuring actual reductions in power consumption and improvements in voltage stability, Mitsubishi Electric aims to verify effective methods for reducing and optimizing electricity usage across the Krakow tram network.

Through this new railway EMS incorporating ESS, Mitsubishi Electric expects to support railway operators in achieving energy efficiency and carbon neutrality.

This PoC project will be supported by the Subsidies for Global South Future-Oriented Co-Creation Project (Ukrainian Reconstruction Support/Strengthening Cooperation with CEE Nations) in the FY2024² Supplementary Budget, which is administered by the Ministry of Economy, Trade and Industry of Japan.