Energy Vault has officially expanded into the Japan energy storage market through the acquisition of an 850 MW battery energy storage system (BESS) portfolio from a local developer. The move marks a major step in the company’s global growth strategy as it targets high-potential energy storage markets.
The acquired portfolio includes 350 MW of advanced-stage projects, which are expected to begin construction by the second half of 2027 and enter commercial operation in 2028. In addition, the deal also includes 500 MW of early-stage projects, providing a strong long-term development pipeline.
As part of the acquisition, the company will onboard an experienced local development team. This will support project execution across key areas such as permitting, land acquisition, and grid connectivity, ensuring smoother and faster deployment in the Japanese market.
Japan’s energy storage sector is witnessing rapid expansion, driven by increasing renewable energy integration, grid stability needs, and supportive government policies. The country is emerging as one of the fastest-growing markets for battery energy storage solutions globally.
Energy Vault plans to leverage its advanced energy management software and technology-agnostic storage solutions to deliver efficient and scalable projects. The company is also exploring opportunities in digital infrastructure and AI-powered energy systems to strengthen its regional presence.
With this acquisition, Energy Vault continues to expand its global portfolio, which now exceeds 1 GW of energy storage and digital infrastructure assets under development or operation. The company aims to generate strong long-term revenue while supporting the transition toward clean and reliable energy systems.
