Joint Project with Nippon Storage Battery: Signing of Disaster Support Agreement with Tamana City, Kumamoto Prefecture

Remixpoint Co., Ltd. (Securities code: 3825, Head office: Minato-ku, Tokyo, Representative Director and President CEO: Yoshihiko Takahashi, hereinafter 'the Company') and Nippon Storage Battery Co., Ltd. (Head office: Chiyoda-ku, Tokyo, Representative Director and President: Shuichi Urushihara, hereinafter 'Nippon Storage Battery') held a signing ceremony for a disaster support agreement*1 with Tamana City, Kumamoto Prefecture on June 3, 2026. This agreement aims to utilize the grid-scale storage battery facility 'NC Tamana City Aono Storage Battery' developed through a jointly funded private fund during disasters to improve local disaster resilience and maintain continuity of citizen services. On the same day, the two companies donated 10 portable batteries usable as disaster prevention supplies to Tamana City.

Left: Tamana City Mayor Takahiro Kurahara; Center: Remixpoint Director and Head of Storage Solution Business Division Masato Akita; Right: Nippon Storage Battery Representative Director and President Shuichi Urushihara

The 'NC Tamana City Aono Storage Battery' being developed in Tamana City will be utilized as local infrastructure, contributing to the stabilization of electricity supply and demand in normal times, while functioning as a power supply hub for local residents during emergencies.

Taking this initiative in Tamana City as a precedent, the companies will sequentially consider similar disaster prevention contributions for the other six storage battery facilities in the grid-scale storage battery business jointly promoted with Nippon Storage Battery.

*1: A collaboration agreement between local governments and private companies/organizations in preparation for large-scale disasters or blackouts. It aims to establish support systems including material provision, personnel dispatch, and power supply during normal times.

*2: Large-scale storage facilities installed to effectively utilize renewable energy and maintain the supply-demand balance of electricity.

[Outline of the Signing Ceremony for the 'Agreement on Power Supply Using Grid-Scale Storage Batteries during Disasters etc.']

Date and time: June 3, 2026 (Wednesday) 13:00~

Venue: Tamana City Hall

Attendees: Tamana City Mayor Takahiro Kurahara Nippon Storage Battery Representative Director and President Shuichi Urushihara Remixpoint Director and Head of Storage Solution Business Division Masato Akita

<Agreement details> Tamana City and the two companies will collaborate to establish a power supply support system during disasters, strengthening the local disaster response system and improving citizen services.

[Signing ceremony scene]

[Image of emergency use]

The grid-scale storage battery facility is equipped with external outlets (power taps). In an emergency, qualified personnel (chief electrical engineers) can operate on-site to supply stored electricity externally. This power can be used for charging portable batteries and smartphones. During disasters, power will be delivered to necessary locations via charged portable batteries, supporting the maintenance of disaster response headquarters and evacuation centers.

<About the amount of power that can be supplied> The amount of power required by a two-person household for 72 hours during an emergency is approximately 17kWh (approximately 5.6kWh per day). With a rated capacity of approximately 8MWh (8,146kWh), the storage battery facility can supply power for approximately 470 households for 72 hours. Such storage facilities are expected to play an important role as local infrastructure during disasters.

The Company will continue to develop grid-scale storage battery facilities and create new value through collaboration with local communities.

[Facility overview] Facility name: NC Tamana City Aono Storage Battery Location: Tamana City, Kumamoto Prefecture Rated output: 1,998kW Rated capacity: 8,146kWh Storage system: Made by CATL PCS: Made by TMEIC

[About Nippon Storage Battery] Company name: Nippon Storage Battery Co., Ltd. Location: 3-2-5 Kasumigaseki, Chiyoda-ku, Tokyo Representatives: Chairman Kakuto Kataji, Representative Director and President Shuichi Urushihara Established: July 2024 Business description: Construction and operation of grid-scale storage battery facilities, supply and sale of electricity, etc. Official website: https://www.nipponchikudenchi.co.jp/

Remixpoint Co., Ltd. Remixpoint is a Tokyo Stock Exchange Standard-listed company engaged in energy solution business and digital asset management business. Through its core electricity retail business, storage battery-related business, subsidy application support, and energy-saving consulting, it is working to achieve a decarbonized society and create a sustainable society. It is also creating new value toward solving social issues by leveraging its expertise in the energy and digital asset fields. Official website: https://www.remixpoint.co.jp/ X (formerly Twitter): https://x.com/remixpoint_x