AirTrunk plans an additional $1 billion investment in its Inzai data center campus in Japan, bringing total planned Japan investment to approximately $30 billion.

AirTrunk is planning to invest a further $1 billion in its data center campus in Inzai, Japan.

According to Nikkei Asia, the investment will expand capacity and deploy liquid cooling technology at the campus, enabling high-density AI workload operations.

To fund this, AirTrunk has secured a $1 billion green loan, led by Sumitomo Mitsui Banking Corp, MUFG Bank, and United Overseas Bank, among others.

AirTrunk's CEO, Robin Khuda, said the campus—dubbed TOK1—is likely to be the first in Japan able to host large-scale AI deployments. "Due to geopolitical reasons, we are seeing more and more customers looking to Japan from a North Asian perspective," he said.

The new investment will bring AirTrunk's total investment across its Japan sites to $9 billion. Over the next five years, it is targeting between $27 billion and $30 billion. The company also intends to increase its capacity in Japan from the current 530MW to more than 1GW.

Founded in 2018, AirTrunk was acquired by Blackstone and the Canadian Pension Plan for $16.1 billion in 2024, in what was the largest deal in the space at the time. The company has data center campuses in operation and under development in Sydney (3) and Melbourne (2) in Australia, as well as Singapore, Hong Kong, Johor in Malaysia, Tokyo (2), and Osaka (2) in Japan.

Earlier this year, the company acquired Indian operator Lumina CloudInfra, marking its entry into India. In July, it secured $2.3 billion in funding for its campus in Johor Bahru, Malaysia.