Storage System Order
2025-09-02 05:42:38

Tokyo Century and MIRARTH Energy Solutions Secure Major Storage System Order for Yokohama

PowerX Secures Major Battery Storage System Order



In a monumental step towards energy sustainability, PowerX, headquartered in Tamano City, Okayama Prefecture, has announced a significant order for their energy storage system, the Mega Power 2700A. This collaboration involves Tokyo Century Corporation, based in Chiyoda, Tokyo, and MIRARTH Energy Solutions, from Shinjuku, Tokyo. Together, they will supply a total of 24 storage units with a combined capacity of 65.8 MWh aimed at supporting a new high-voltage energy storage project set to be established in Asahi Ward, Yokohama City, Kanagawa Prefecture.

Scheduled to become operational in 2029, this advanced energy storage system is designed to connect with the Tokyo electric power grid, enabling effective charging and discharging operations. It is anticipated that the Mega Power 2700A will play a crucial role in stabilizing the supply and demand balance of electricity in the region. This project has been selected for the 2024 Support Project for the Introduction of Large-Scale Storage Batteries under the Tokyo Metropolitan Environmental Public Corporation.

PowerX is committed to contributing to Japan's carbon neutrality goals by continuously developing and providing domestically produced energy storage systems. The details of the recently secured order are as follows:

Order Products


The order includes a total of 24 Mega Power 2700A systems, specifically designed for electric grid application.

Storage Site Details


  • - Project Location: Asahi Ward, Yokohama City, Kanagawa
  • - Number of Storage Containers: 24 units
  • - Nominal Storage Capacity: 65.8 MWh, sufficient to cover the daily electricity consumption of approximately 6,300 households
  • - PCS Output: 12 MW
  • - Operator: MIRAI Tokyo Storage LLC, a joint investment company formed by Tokyo Century and MIRARTH Energy Solutions.

Expected Operational Start


The energy storage systems are projected to commence operations in 2029.

About Mega Power 2700A


  • - Size: Standard 20-foot container (ISO compliant)
  • - Battery Type: Lithium Iron Phosphate (LFP)
  • - Storage Capacity: Nominal capacity of 2,742 kWh / Rated capacity of 2,468 kWh per unit
  • - Manufacturing Source: Tamano City, Okayama Prefecture

This strategic partnership and the deployment of the Mega Power 2700A not only signify a step towards enhanced energy solutions but also highlight a collaborative effort to address the pressing need for sustainable and efficient energy management in Japan. As renewable energy sources become increasingly prevalent, the demand for reliable storage systems like the Mega Power 2700A will continue to grow, solidifying its importance in Japan’s energy landscape.


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