Japanese battery and energy storage sector development

The Japanese battery and energy storage sector is seeing growth in both manufacturing capacity and technological optimization.

Initially, manufacturers focused on expanding their footprints in the automotive and energy storage markets. GS Yuasa announced the adoption of its lithium-ion batteries for Toyota’s overseas Lexus ES hybrid models, while the company PowerX signaled plans to increase large-scale adjustment capacity through cell procurement from Indonesia and South Korea.

Subsequently, the focus has shifted toward software and operational efficiency within the electricity market. Tensor Energy released research demonstrating that “negative-positive operation” for batteries in Japan’s primary frequency control market significantly outperforms discharge-only bidding, increasing revenue by up to 60% for high-voltage solar-coupled batteries. Additionally, Bluefield Energy introduced “BF Cloud Agri,” a SaaS platform intended to automate forecasting, bidding, and settlement processes for energy aggregators.

Recent developments have further detailed these technological advancements. GS Yuasa’s ‘EHW4GA’ automotive lithium-ion battery, utilized in Lexus ES and RAV4 hybrid models, features an energy density more than 10% higher than previous series products and utilizes die-cast housing to reduce weight. In the software sector, Tensor Energy’s analysis of 17 months of market data confirmed that “negative-positive operation” increased revenue by 31% for standalone batteries and 45% for low-voltage solar-coupled batteries. Bluefield Energy has expanded its service offerings to include aggregation outsourcing to assist businesses with regulatory submissions and monitoring.