HOBE ENERGY, Developer of Next-Generation Battery Solutions, Successfully Energizes 'Hachibuse Battery Storage' in Hanyū Town, Saitama — Third Site in Saitama Following Uenara and Shichinoki

HOBE ENERGY Co., Ltd. (Headquarters: Minato-ku, Tokyo; President & CEO: Tsuyoshi Okino; hereinafter “HOBE ENERGY”), a provider of next-generation battery solutions, announces the successful energization on July 13, 2026, of the 5MWh-scale grid-connected battery storage project 'Hachibuse Battery Storage' in Hanyū Town, Ōsato District, Saitama Prefecture, developed by Japan Energy Storage Development Institute Co., Ltd. (Headquarters: Tokyo; Representative Director: Akira Hoshino; hereinafter “JESDI”). HOBE ENERGY supplied its proprietary integrated battery storage system, including batteries, EMS, PCS, and power substation equipment.

This project marks JESDI’s fourth battery storage site in Japan and the third in Saitama Prefecture, following the 'Uenara Battery Storage' and 'Shichinoki Battery Storage' facilities. Following the simultaneous commercial operation launch of both Uenara and Shichinoki projects on June 16, this project also achieved energization in approximately four months from construction start—an extremely short lead time. This success reaffirms the effectiveness of HOBE ENERGY’s standardized and mass-producible 'rapid implementation model' across multiple projects.

HOBE’s 'Land Constraint-Responsive Solution' Addressing the Challenge of Abandoned Farmland

HOBE ENERGY is not merely a vendor selling battery equipment. We aim to be a partner that deeply engages with the challenges faced by our clients and local communities, providing solutions through specialized expertise and cutting-edge technology. For the Hachibuse Battery Storage project, HOBE ENERGY has made a strong commitment to addressing the regional issue of effectively utilizing 'abandoned farmland (idle agricultural land)'—a growing concern due to the aging population of farmers.

5ft Container Design Overcoming Narrow and Curved Access Routes

Idle farmland often features narrow access roads and sharp curves, making it difficult or even impossible for standard industry-sized 20ft containers to enter. HOBE ENERGY overcame this land constraint by deploying its '5ft compact-type' system, which excels in physical installation ease. This innovation has transformed previously underutilized land into next-generation energy infrastructure.

Four-Month Rapid Energization Through Standardized Design and Construction Processes

By fully leveraging the advantages of the 'integrated design model'—supplying batteries, EMS, PCS, and substation equipment as a single package—HOBE ENERGY has thoroughly standardized the entire process from design to construction. As a result, despite complex site conditions, the project achieved ultra-fast energization in just about four months from construction start (March 24, 2026).

Installation Overview

▲ Aerial view of Hachibuse Battery Storage (Hanyū Town, Saitama Prefecture)

Battery Storage Name

Hachibuse Battery Storage

Location

3075-1 Hachibuse, Hanyū Town, Ōsato District, Saitama Prefecture

Capacity

5MWh (Output: 2MW)

Construction Start Date

March 24, 2026

Energization Date

July 13, 2026 (Approximately 4 months from construction start)

Battery System

HOBE ENERGY 5ft Compact-Type Integrated Battery Storage System

(LFP Battery, Proprietary EMS, PCS, and Substation Equipment – Fully Integrated Design)

Project Owner

Japan Energy Storage Development Institute Co., Ltd. (JESDI)

Construction Partner

E-Top Co., Ltd. (EPC)

Operations Support

RUTILEA Co., Ltd. (Aggregator)

Future Outlook: Nationwide Expansion of 'Energy Innovation' Aligned with Regional Challenges

Following the operational launch of Uenara and Shichinoki last month, the successful energization of the Hachibuse Battery Storage solidifies HOBE ENERGY’s grid-connected battery systems as a robust solution that simultaneously achieves 'stabilization of Japan’s power grid' and 'regeneration of idle regional assets and abandoned farmland'.

Moving forward, HOBE ENERGY will maintain a smooth system supply framework for JESDI’s upcoming projects while addressing the diverse challenges faced by municipalities and businesses nationwide regarding 'land utilization' and 'renewable energy integration'. By further strengthening the integrated four-company collaboration system (HOBE, JESDI, RUTILEA, and E-Top), we will accelerate innovation toward Japan’s decarbonization and advanced energy infrastructure.

Message from Tsuyoshi Okino, President & CEO, HOBE ENERGY Co., Ltd.

“We are delighted to have successfully achieved the planned high-speed energization in approximately four months for the Hachibuse Battery Storage, following the commercial operation launch of the Uenara and Shichinoki facilities last month. We sincerely thank Mr. Akira Hoshino of JESDI, E-Top for expertly managing complex local logistics and construction, and RUTILEA for their critical operational support.

The Hachibuse project holds profound significance for our company. It concretely demonstrates our vision of being a 'partner who solves the challenges of our customers and society'—through the fusion of effective abandoned farmland utilization and our 5ft compact-type system. Our expertise and implementation capability lie not just in delivering products, but in optimizing solutions by fully considering site-specific characteristics and regional challenges.

As we accumulate proven results in Uenara, Shichinoki, and now Hachibuse, our one-stop solution’s standardization and reproducibility continue to improve. We remain committed to supporting diverse needs across Japan and strengthening the infrastructure for Japan’s energy independence.”

Company Overview

【HOBE ENERGY Co., Ltd.】

・Company Name: HOBE ENERGY Co., Ltd.

・Representative: President & CEO Tsuyoshi Okino

・Headquarters: 3F, Tōei Nishishinbashi Building, 1-13-5 Nishishinbashi, Minato-ku, Tokyo 105-0003

・Business: Battery storage solutions (small-scale, industrial, sodium batteries, EMS)

・URL: https://hobeenergy.co.jp/

【Japan Energy Storage Development Institute Co., Ltd. (JESDI)】

・Company Name: Japan Energy Storage Development Institute Co., Ltd.

・Representative: Representative Director Akira Hoshino

・Business: Development and promotion of grid-scale battery energy storage systems (BESS)

・URL: https://japan-energystorage.co.jp/