Japan's Toyama Prefecture to Build Nation's Largest Data Center Hub with 3.1 GW Capacity December 19, 2025 In a strategic move to diversify the nation's digital infrastructure and meet surging demand for artificial intelligence and cloud computing, Japan is set to develop its largest data center hub in Toyama Prefecture. The project, spearheaded by Nanto City, marks a significant shift away from the traditional concentration of data centers in the Tokyo and Osaka metropolitan areas. According to an exclusive document, the planned hub will boast a massive total power capacity of 3.1 gigawatts (GW), a scale unprecedented in Japan. The development is being pursued in collaboration with infrastructure partner GigaStream Toyama, with an official announcement scheduled for this Friday. The ambitious initiative is targeted to become operational by 2028. The sheer scale of the 3.1 GW capacity underscores the project's role in addressing the critical power and space constraints faced by existing hubs. This expansion is directly driven by the exponential growth in computational needs from AI training, large language models, and enterprise cloud migration. Industry analysts view the Toyama project as a pivotal development for Japan's data center market. By leveraging the prefecture's available land, cooler climate favorable for data center cooling, and potential for renewable energy integration, it aims to create a new, resilient backbone for the country's digital economy. The hub is expected to attract major cloud service providers and AI companies, accelerating Japan's overall market growth and enhancing its regional competitiveness in the Asia-Pacific digital landscape. Source: longbridge
Japan's Toyama Prefecture to Build Nation's Largest Data Center Hub with 3.1 GW Capacity
