Tokyu Group Promotes Grid-Scale Battery Storage Project, Selected for Tokyo Metropolitan Government Support Program for Second Consecutive Year - Total Development Scale of 46MW/184MWh, to Begin Operation by FY2027
Tokyu Corporation, selected for the Tokyo Metropolitan Government's support program for two consecutive years, is advancing a grid-scale battery storage project with a total development scale of 46MW/184MWh. With a total investment of 14 billion yen, the project aims to commence operations by fiscal year 2027, contributing to the stable supply and proliferation of renewable energy.
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- 📰 Published: April 8, 2026 at 23:00
- 🔍 Collected: April 8, 2026 at 14:30
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Tokyu Corporation (hereinafter referred to as Tokyu) has been selected for the second consecutive year for the "Grid-Scale Large Battery Introduction Support Project for Expanding Renewable Energy Adoption" implemented by the Tokyo Metropolitan Government. The company will promote a grid-scale battery storage project (hereinafter, this project) with a total development scale of 46MW/184MWh, aiming to start operations by fiscal year 2027.
In this project, both Tokyu and Tokyu Power Supply Co., Ltd. (hereinafter, Tokyu Power Supply) are scheduled to make investments. Tokyu will be responsible for the construction of the grid-scale battery storage facilities, while Tokyu Power Supply, an energy business operator within the Tokyu Group, will handle their operation. As a retail electricity provider, Tokyu Power Supply has accumulated knowledge in supply and demand management. It will contribute to stabilizing electricity supply and demand and effectively utilizing surplus electricity through operations such as absorbing surplus renewable energy (hereinafter, renewables), providing balancing capacity, and discharging power during times of tight electricity supply.
The two companies plan to develop grid-scale battery storage facilities in stages and continuously across Japan. The total development scale of this project is 46MW/184MWh, with a total investment of approximately 14 billion yen. All grid-scale battery storage facilities are scheduled to begin operation by fiscal year 2027. Furthermore, while coordinating with Tokyo's energy policies, they will aim to maximize business value through collaboration with equipment manufacturers and power-related businesses.
Currently in Japan, to achieve carbon neutrality by 2050, the adoption of renewables such as solar and wind power is progressing. However, managing supply and demand fluctuations and ensuring stable grid operation have become significant societal challenges, especially in large metropolitan areas. In March 2026, the first-ever renewable energy output curtailment in the Tokyo metropolitan area was implemented, highlighting the growing importance of securing balancing capacity to effectively use renewables without waste. The Tokyo Metropolitan Government also positions the development of grid-scale batteries as one of its key measures in line with the expansion of renewable energy adoption. Tokyu has decided to enter and promote the grid-scale battery storage business, which aligns with these regional policy directions.
The Tokyu Group will contribute to the realization of a decarbonized society by promoting not only "energy storage" through this project but also "energy creation" through initiatives like solar power development utilizing off-site corporate PPAs, thereby promoting the dissemination of renewables with additionality.
In this project, both Tokyu and Tokyu Power Supply Co., Ltd. (hereinafter, Tokyu Power Supply) are scheduled to make investments. Tokyu will be responsible for the construction of the grid-scale battery storage facilities, while Tokyu Power Supply, an energy business operator within the Tokyu Group, will handle their operation. As a retail electricity provider, Tokyu Power Supply has accumulated knowledge in supply and demand management. It will contribute to stabilizing electricity supply and demand and effectively utilizing surplus electricity through operations such as absorbing surplus renewable energy (hereinafter, renewables), providing balancing capacity, and discharging power during times of tight electricity supply.
The two companies plan to develop grid-scale battery storage facilities in stages and continuously across Japan. The total development scale of this project is 46MW/184MWh, with a total investment of approximately 14 billion yen. All grid-scale battery storage facilities are scheduled to begin operation by fiscal year 2027. Furthermore, while coordinating with Tokyo's energy policies, they will aim to maximize business value through collaboration with equipment manufacturers and power-related businesses.
Currently in Japan, to achieve carbon neutrality by 2050, the adoption of renewables such as solar and wind power is progressing. However, managing supply and demand fluctuations and ensuring stable grid operation have become significant societal challenges, especially in large metropolitan areas. In March 2026, the first-ever renewable energy output curtailment in the Tokyo metropolitan area was implemented, highlighting the growing importance of securing balancing capacity to effectively use renewables without waste. The Tokyo Metropolitan Government also positions the development of grid-scale batteries as one of its key measures in line with the expansion of renewable energy adoption. Tokyu has decided to enter and promote the grid-scale battery storage business, which aligns with these regional policy directions.
The Tokyu Group will contribute to the realization of a decarbonized society by promoting not only "energy storage" through this project but also "energy creation" through initiatives like solar power development utilizing off-site corporate PPAs, thereby promoting the dissemination of renewables with additionality.