[MIRAIT ONE Corporation] MIRAIT ONE Installs First Commercial Liquid-Cooled Container Data Center Equipped with Delta Electronics LTA CDU at Shin-Kiba Building in Japan*

MIRAIT ONE Corporation (Headquarters: Minato-ku, Tokyo; President: Hidenori Sugawara; hereinafter referred to as MIRAIT ONE), with the cooperation of Delta Electronics, Inc. (Headquarters: Minato-ku, Tokyo; President: Hua Jianhao), has installed its first commercial "20ft Liquid-Cooled Container Data Center (hereinafter referred to as this Liquid-Cooled Container DC)" equipped with Delta Electronics LTA CDU (common name: AALC) at the MIRAIT ONE Shin-Kiba Building for the verification of high-performance GPU server construction at the MM Advanced Innovation Lab*2. This marks the first installation of a data center equipped with Delta Electronics LTA CDU in Japan.

In recent years, the demand for data centers is expected to expand due to the acceleration of digitalization and the utilization of generative AI. However, with the increasing performance of GPUs, conventional air-cooling technology is becoming insufficient for effective cooling, making the transition to liquid-cooling technology indispensable. While AALC, a type of liquid-cooling technology, is rapidly gaining traction in countries like the United States, its adoption in Japan has been limited.

AALC is a cutting-edge DLC*4 technology that cools coolant using an air conditioning system and can be installed in a compact footprint, which is why it was incorporated into this Liquid-Cooled Container DC. Furthermore, it eliminates the need for large-scale liquid piping construction, allowing for easy integration by leveraging existing air conditioning equipment.

This Liquid-Cooled Container DC will serve as a demonstration facility to support next-generation infrastructure, aiming to commence operations using high-performance GPU servers and IOWN technology from September 2026 onwards. Sales are also planned both domestically and internationally.

Images, product descriptions, and usage scenarios for this Liquid-Cooled Container DC are provided below.

*1 First installation in Japan: Based on our own research.

*2 MM Advanced Innovation Lab: A lab facility established on March 18, 2025, at the MIRAIT ONE Shin-Kiba Building, where MIRAIT ONE and Morgenrot jointly conduct research, development, and verification with the aim of creating next-generation container data centers that combine world-class safety, environmental performance, and computing power to address new challenges and customer needs in container data centers.

*3 LTA CDU (Liquid-to-Air Coolant Distribution Unit): A cutting-edge cooling technology installed in server racks of data centers that directly cools high-performance, high-heat-generating GPUs with liquid, and cools the heated coolant using an internal heat exchanger. It is commonly known as AALC (Air Assisted Liquid Cooling).

*4 DLC (Direct Liquid Cooling): A cooling method that directly cools high-performance, high-heat-generating GPUs installed in server racks of data centers with liquid. The installation of liquid cooling piping and the need for a separate cooling heat source unit have been barriers to introducing high-performance, high-heat-generating GPUs into existing air-cooled data centers.

Details:

Liquid-Cooled Container Data Center Equipped with Delta Electronics LTA CDU

● Product Description

- There is no need to install water cooling pipes or cooling equipment outside this Liquid-Cooled Container DC. The simple equipment configuration, requiring only an outdoor air conditioning unit, allows for installation in small spaces.

- The prefabricated Liquid-Cooled Container DC is delivered and installed on-site, and installation is completed by connecting the power supply. This shortens the construction period and reduces the possibility of human error during construction.

- High-efficiency liquid-cooled GPUs achieve significant energy and CO2 savings per unit of computing power compared to conventional air-cooled GPUs, enabling both the resolution of social issues through decarbonization and business improvement.

Delta Electronics LTA CDU, GoCool-80, Liquid-to-Air Coolant Distribution Unit, GoCool-80

● Usage Scenarios

- Enterprise businesses planning to improve the efficiency of back-office operations using AI agents by building an on-premises private cloud environment that handles highly confidential data that cannot be uploaded to the cloud, utilizing small surplus spaces and surplus power within their own premises with AALC liquid-cooled container data centers.

- Logistics warehouse operators and solar power generation operators planning to reduce lost profits and improve business performance by converting suppressed power from solar power plants installed on warehouse roofs or in rural areas into computing power using high-efficiency GPUs in AALC liquid-cooled container data centers installed in small surplus spaces within their premises.

About MIRAIT ONE Corporation: MIRAIT ONE Corporation is a company that creates and protects various infrastructures, with a history of approximately 80 years since its founding in 1946. Building on its extensive experience and technical capabilities cultivated in telecommunications infrastructure construction, the company has also been creating and protecting social infrastructures in the energy and transportation fields in recent years. Leveraging technologies in telecommunications, electricity, construction, and civil engineering, MIRAIT ONE is engaged in creating towns and communities for the future, promoting DX for regions and companies, and the utilization of green energy. With the purpose of "Co-creating a 'Waku Waku' Future through Technology and Challenge," the company aims to create new value that enriches people's lives and realize a sustainable society.

About Delta Electronics, Inc.: Delta Electronics, Inc. is the Japanese subsidiary of the Delta Group. Delta Group is a world-leading manufacturer of switching power supplies and cooling fans, and provides a wide range of equipment and services, from power management, electronic components, displays, FA, and networking to renewable energy solutions. Founded in Taiwan in 1971, the group now has sales and manufacturing bases worldwide.