JR Kyushu and Sumitomo Corporation Complete 'Battery Station Tomiai' Project in Kumamoto
JR Kyushu and Sumitomo Corporation have completed the 'Battery Station Tomiai' project in Kumamoto City on January 30, 2026. This grid-scale battery storage facility will participate in the Ancillary and Capacity Markets. The project aims to stabilize the power grid in the Kyushu region, addressing issues of renewable energy output curtailment, which is expected to reach approximately 1 billion kWh by fiscal 2025.
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JR Kyushu, Sumitomo Corporation, and Sumitomo Corporation Kyushu have established Battery Station Kyushu LLC, completing the 'Battery Station Tomiai' project in Kumamoto City on January 30, 2026. This facility will operate as a grid-scale battery, participating in the Ancillary and Capacity Markets.
The project addresses the challenges of stabilizing the power grid in the Kyushu region, where solar power generation has surged, leading to significant output curtailments. By fiscal 2025, it is anticipated that around 1 billion kWh of renewable electricity will go unused due to these curtailments. Battery Station aims to support decarbonization and enhance local energy services.
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