#Japan #Tokyo #Energy Storage #PALMA #JB Sustainable

Introduction

In recent years, the need for stable electricity in the face of rising renewable energy adoption has become more evident. This has brought to the forefront the significance of energy storage systems. On April 23, 2026, Palma Co., Ltd., based in the Chiyoda district of Tokyo, signed a business alliance with JB Sustainable, a subsidiary of the Jelly Beans Group (stock code: 3070), to combine efforts in establishing and managing grid-connected energy storage systems.

Background: Energy Challenges and Space Shortages

Despite the strides made in renewable energy, the variation in generation output has resulted in the need for stabilizing power supplies. Energy storage systems—specifically grid-connected batteries—are recognized as one vital solution. However, a significant obstacle is finding suitable locations equipped with the necessary infrastructure to install these energy storage units.

Key Points of the Partnership

By leveraging Palma's expansive self-storage network across Japan alongside JB Sustainable's expertise in battery operations, the partnership aims to construct cutting-edge energy infrastructure.

Concrete Initiatives

• - Utilizing Container Storage: Certain portions of container-based trunk rooms, such as 20-foot segments, will be repurposed as energy storage hubs.
• - Exploring Diverse Deployment Models: The initiative will assess various models including company-owned facilities, customer sites, and leased locations.
• - Establishing Infrastructure and Operations Collaboration: A structured system for infrastructure maintenance, operations, and connectivity will be developed.
• - Leveraging Customer Networks: The initiatives will be promoted using Palma's existing customer networks.

Advantages of Palma

The design of Palma's self-storage—characterized by a widespread presence along roadsides, well-established infrastructure, and its strong compatibility with power supply systems—serves as a solid foundation for battery installations. These attributes make the company's facilities prime candidates for expanding energy storage capabilities.

Future Outlook

Through this collaboration, Palma aims to maximize the value of underutilized spaces, enhance the added value of storage facilities, and uncover new roles as energy infrastructure providers. This vision is part of Palma's evolution into a 'storage infrastructure company' that meets modern energy needs.

Representative's Comment

Palma's self-storage offerings extend beyond mere storage space; they possess the potential to evolve into critical social infrastructure. By integrating energy solutions with real estate through this partnership, we are committed to creating new value and addressing the current energy challenges head-on.

Company Overview

Palma Co., Ltd.

• - Representative: Junichi Kimura, President
• - Location: 4-5-20 Kojimachi, Chiyoda-ku, Tokyo
• - Founded: January 2006
• - Capital: 600 million JPY (as of December 2025)
• - Stock Exchange: Tokyo Stock Exchange Standard Market / Nagoya Stock Exchange Main Market
• - Stock Code: 3461
• - Number of Employees: 43 (as of March 2026, excluding temporary staff)