Blackstone-Backed AirTrunk to Invest $1 Billion in Japan Data Centre Campus for AI Workloads

AirTrunk, the hyperscale data centre operator backed by Blackstone, announced on Wednesday that it will invest an additional $1 billion in its flagship campus in Inzai, a city in eastern Japan, to equip the site for artificial intelligence workloads. The investment marks a significant escalation in the company's commitment to Japan's rapidly growing digital infrastructure market and underscores the broader shift in the Asia-Pacific region toward AI-optimized data centre capacity.

The Inzai campus, known as TOK1, currently supports more than 300 megawatts of capacity and has traditionally been used for cloud services workloads. With the new capital injection, AirTrunk will deploy liquid-cooling technology across the campus to accommodate the high-density computing requirements of AI training and inference. According to CEO Robin Khuda, TOK1 is likely to become the first data centre campus in Japan to host large-scale AI workload deployments.

The decision to expand in Japan reflects a broader trend of customers seeking alternatives to traditional North Asian hubs. "Due to geopolitical reasons, we are seeing more and more customers looking to Japan from a North Asian perspective," Khuda said. He further noted that deploying AI infrastructure is becoming increasingly difficult in the United States and is already challenging in Europe, making Asia a "big beneficiary" of the global AI infrastructure buildout.

The $1 billion investment will cover the retrofitting and expansion of cooling systems, power delivery infrastructure, and related facilities needed to support the demanding thermal and energy requirements of AI hardware. Liquid cooling, which is far more efficient than traditional air-based systems for high-density racks, is becoming a critical enabler for next-generation data centres running GPU-intensive AI models.

Japan has emerged as a key destination for data centre investment in the Asia-Pacific region, driven by strong enterprise demand, government support for digital transformation, and its strategic location relative to other North Asian markets. AirTrunk's expanded commitment to the Inzai campus positions the company to capture a growing share of the region's AI infrastructure spending, even as competition among hyperscale operators intensifies across Japan and neighboring markets.