Seminar on Long-Term Stable Revenue for Battery Storage Business to be Held on April 21

PowerX, Inc. (Headquarters: Tamano City, Okayama Prefecture; Director, President & CEO: Masahiro Ito; Securities Code: 485A), in co-sponsorship with Nikkei BP Intelligence Group, will hold a seminar focusing on the long-term stable monetization of the battery storage business on Tuesday, April 21, 2026.

In the supply and demand adjustment market, rules are changing rapidly, including the lowering of price caps, and there is even a prevailing sentiment that 'the grid-scale battery business is a first-come, first-served game.' However, with the introduction of renewable energy expected to increase further, the real stage for the battery storage business is just beginning.

This seminar will specifically explain how to utilize battery storage as a long-term stable revenue source without relying on subsidies, and will delve into the business environment, such as the medium- to long-term outlook for the supply and demand adjustment market and the direction of policies.

Event Overview Name: 'The Real Stage is Just Beginning! Battery Utilization as a Long-Term Stable Business' Date and Time: Tuesday, April 21, 2026, 14:00-18:30 Seminar: 14:00-17:15 (scheduled) / Networking Event: 17:20-18:30 Venue: Shinagawa The Grand Hall (Shinagawa Grand Central Tower 3F, 2-16-4 Konan, Minato-ku, Tokyo) Format: Hybrid (On-site participation or online viewing) Organizer: PowerX Co-organizer: Nikkei BP Intelligence Group Sponsor: JERA Cross Tuition Fee: Seminar is free (Networking event is paid: 1,000 yen including tax)

Program (*Speakers and presentation times are subject to change)

- 14:00-14:20 | The Current State, Challenges, and Possibilities of the Battery Storage Business Yusuke Kojima (Executive Officer, Power Business Domain, PowerX), Koyuki Yamane (Editor-in-Chief, Nikkei Energy Next)

- 14:20-14:50 | Total Solutions Provided by PowerX for Grid-Scale Battery Stations and Solar Power Plants Yusuke Kojima (Executive Officer, Power Business Domain, PowerX)

- 14:50-15:20 | Outlook for the Supply and Demand Adjustment Market Toward Realizing Carbon Neutrality in 2050 Yusuke Kojima (Executive Officer, Power Business Domain, PowerX)

- 15:20-15:50 | Possibilities of Battery Storage in Anticipation of GHG Protocol Revisions Mr. Takashi Satonaka (General Manager, Energy Division, JERA Cross)

- 15:50-16:00 | Break

- 16:00-16:30 | The Present and Future of Domestic and International BESS Businesses - Systems and Policies Necessary for Expansion Mr. Hiroshi Takahashi (Professor, Faculty of Social Sciences, Hosei University / Senior Research Fellow, Renewable Energy Institute)

- 16:30-17:15 | Panel Discussion: 'Prospecting the Future of Battery Storage from Systems, Markets, and Business Models' Mr. Hiroshi Takahashi (Professor, Faculty of Social Sciences, Hosei University / Senior Research Fellow, Renewable Energy Institute) Mr. Takashi Satonaka (General Manager, Energy Division, JERA Cross) Yusuke Kojima (Executive Officer, Power Business Domain, PowerX)