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Prime Minister Shigeru Ishiba announced at the Digital Administrative Reform Conference in February the establishment of a public-private council to integrate the development of data centers and power plants, anticipating increased demand due to the spread of artificial intelligence (AI). This initiative aims to decentralize electricity and communication infrastructure, which are currently concentrated in urban areas.

The newly established public-private council will serve as a platform for discussing specific measures, with potential participation from Tokyo Electric Power Company Group, NTT, SoftBank Group, and others.

This concept of integrating data centers and power plants is known as “Watt-Bit Collaboration.” It envisions establishing data centers near power plants, such as nuclear, wind, and solar, to promote industrial clusters.

Focusing on the cost-effectiveness of fiber optic cables compared to power transmission lines, the plan aims to efficiently transmit digital information through optical cables, contributing to the development of a new power transmission and distribution network.

Data centers are currently concentrated in Tokyo and Osaka, with the Kanto and Kansai regions accounting for approximately 90% of the total site area as of 2023, according to the Ministry of Internal Affairs and Communications. Decentralizing electricity and communication infrastructure is essential from a national resilience perspective, including disaster response.

While this initiative aims to balance a smooth transition to decarbonization with the revitalization of regional economies, there are concerns regarding electricity challenges.

AI Power Capacity in Domestic Data Centers Expected to Increase Approximately 3.2 Times by 2028

IDC Japan Corporation released its estimated results of the power capacity required for AI servers installed in domestic data centers at the end of February. The total power capacity required by AI servers in domestic data centers is expected to increase from 67 megawatts at the end of 2024 to 212 megawatts by the end of 2028, an approximately 3.2-fold increase in four years. This is equivalent to about 5 to 8 hyper-scale data centers built in the Tokyo metropolitan area and Kansai region.

This power capacity refers to the power required by servers and does not include the power required by network equipment or cooling systems.

IDC Japan explained that the current estimate significantly revises the previous estimate (approximately 80 to 90 megawatts in 2027) made in January 2024. This revision is due to a substantial upward adjustment in the forecast for AI server shipment value in the domestic market.

The background includes the rapid expansion of AI server installations by hyper-scalers, as well as the acceleration of AI server procurement by domestic service providers and research institutions through government subsidy programs.

In particular, the scale of AI infrastructure investment by hyper-scalers is significant, with hyper-scale data centers accounting for the majority of the estimated power capacity.

AI servers are known for their high power consumption and heat generation per unit. Therefore, data centers that install a large number of AI servers require liquid cooling systems instead of conventional air conditioning systems.

Some experts believe that there are still many points to consider regarding the introduction of liquid cooling systems. Finding concrete solutions to these electricity challenges will be key to realizing the integrated AI infrastructure development.