Australian data center operator AirTrunk has announced a $1 billion investment to install liquid cooling systems at its TOK1 campus in Inzai, near Tokyo. This facility, which currently supports over 300 MW of capacity, will be upgraded to accommodate high-density server racks equipped with AI accelerators.
The funding is structured as a $1 billion green loan. According to the company, the first operational units featuring the new cooling technology are scheduled to come online in January 2028. While the infrastructure is designed for multiple clients, AirTrunk has not disclosed their identities.
CEO Robin Khuda noted the potential for the campus to become a major hub for AI workloads in Japan. The liquid cooling system is intended to support energy densities that exceed the capabilities of traditional air-based cooling methods. The company has not specified the exact volume of AI computing that will be deployed.
This investment is separate from the $1.24 billion green loan secured by AirTrunk in March. That earlier funding was allocated for the refinancing and ongoing construction of the TOK1 facility. The new capital is specifically earmarked for the cooling system upgrade.
