Self-Storage x Storage Batteries: Towards New Infrastructure

～Turning self-storage facilities nationwide into 'energy supply hubs'～

Palma Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; President: Junichi Kimura; hereinafter 'Palma') and JB Sustainable Co., Ltd. (Headquarters: Chuo-ku, Tokyo; Representative Director: Akira Miyazaki; hereinafter 'JB Sustainable'), a subsidiary of Jelly Beans Group (Securities Code: 3070), signed a business alliance agreement on April 23, 2026, regarding the installation and operation of grid-scale storage batteries.

Background: Energy Challenges and Lack of 'Space' While the adoption of renewable energy is progressing, 'power stabilization' to respond to fluctuations in power generation has become a social issue. 'Grid-scale storage batteries,' which store surplus electricity and supply it when needed, are attracting attention as a solution. However, 'securing suitable locations and infrastructure' remains a major challenge for the widespread adoption of storage batteries.

Key Points of the Alliance This alliance aims to build a new energy infrastructure by combining Palma's nationwide self-storage network with JB Sustainable's expertise in storage battery operation.

Specific Initiatives - Utilizing parts of container-type self-storage units (e.g., 20ft sections) as battery installation hubs. - Considering various development models, including company-owned, customer-owned, and leased facilities. - Establishing a collaborative system for infrastructure development, operation, and maintenance. - Promoting expansion through the utilization of customer networks.

Why Palma's Strengths Matter Palma's self-storage facilities are ideal infrastructure bases for battery installation due to their features: 'decentralized placement along roadsides nationwide,' 'already established installation foundations,' and 'high affinity with power infrastructure.'

Future Outlook Through this initiative, we will realize 'maximizing the value of unused space,' 'increasing the value-added of storage facilities,' and 'creating new roles as energy infrastructure,' accelerating our evolution as a 'storage infrastructure company.'

Representative's Comment The self-storage facilities we develop are not just storage spaces but have the potential to evolve into social infrastructure. Through this alliance, we will fuse energy and real estate to challenge the creation of new value.

Company Profiles [Palma Co., Ltd.] Representative: President Junichi Kimura Location: 5th Floor, KS Building, 4-5-20 Kojimachi, Chiyoda-ku, Tokyo Founded: January 2006 Capital: 600 million yen *As of late December 2025 Stock Exchanges: TSE Standard / NSE Main Securities Code: 3461 Number of Employees: 43 *As of late March 2026, excluding temporary staff