Mitsui Fudosan, Kumagai Gumi and ゲットワークス announced plans to develop Japan's first underground data center using an existing tunnel in Kobe. The companies are also considering expanding the project nationwide in the future.
Mitsui Fudosan, together with Kumagai Gumi and ゲットワークス, will begin developing Japan's first underground data center using an existing tunnel that Kobe had used until 2005. The project aims to convert idle assets into digital infrastructure by leveraging the tunnel's cool conditions, earthquake resistance and limited external access.
The data center will install containerized equipment in a deep underground tunnel, with a maximum receiving capacity expected to reach 20 MW in the future. Initial services are scheduled to begin at the end of 2027, with the project seeking to reduce its environmental impact and achieve highly efficient operations through the adoption of water cooling.
In addition to the high earthquake resistance and physical security of underground spaces, the project will use ゲットワークス' shelter-type container technology to strengthen its ability to withstand natural disasters and external risks. The facility is designed to accommodate the storage of critical data for companies and local governments.
The project aims to develop multiple sites using idle underground spaces nationwide, and in the future will promote the construction of a network of data centers using tunnels and former mine sites across Japan. Development, operations and technical expertise will be advanced under a framework that promotes them through MAG!C.