English 
TEPCO Power Grid, Inc. and Hitachi, Ltd. Chiyoda-ku, Tokyo has shown success in grid-linked energy management. They shifted workloads between data centers (DCs), which is a big step for energy optimization. The experiment set up energy management across three or more sites. It also improved how fast workloads could shift. The team has filed a patent application for the newly developed technology.
Japan aims for carbon neutrality by 2050. As renewable energy grows, data center electricity demand will rise. This increase is partly due to the expansion of power generation AI. This trend creates new challenges. We see delays in grid connectivity. There are also higher societal costs. These come from lower generation efficiency and the need for more infrastructure.
Since October 2022, TEPCO PG and Hitachi have been conducting joint trials to balance power supply and demand by managing energy use across DCs. These efforts have led to the development of core technologies that enable distributed control of data centers for power grid support.
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In the latest demonstration, energy management was tested between DCs located in two areas of Tokyo and three in Kanagawa Prefecture. The experiment effectively leveraged renewable energy in each region by optimally shifting computing workloads. High-capacity networks and distributed energy resources (DERs), including storage batteries, were used to rapidly create power adjustment capacity, showing potential for frequency regulation. Notably, even power-intensive generative AI workloads were shifted with minimal downtime.
今後に向けて TEPCO Power Grid そして 日立 plan to apply this technology to further balance electricity demand using data centers. They also aim to validate the feasibility of commercialization, contributing to carbon neutrality through initiatives like Watt-Bit collaboration, while ensuring a stable power supply and minimizing social costs.
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