AirTrunk Lands $1.24B Green Loan for Tokyo AI Data Hub

AirTrunk just pulled off the biggest data center financing deal Japan has ever seen — and the scale of it should make every AI infrastructure investor pay attention. The Blackstone-backed hyperscale operator secured a 191.6 billion yen loan, equivalent to $1.24 billion, to refinance and push forward the next development phases of its TOK1 campus in the greater Tokyo area, the company announced on Tuesday.

What Is AirTrunk's $1.24B Green Loan Actually For?

The short answer: more megawatts, faster. AirTrunk confirmed the loan will finance the next build-out phases of TOK1, a campus already under construction to add over 100 megawatts of IT load in the near term. The facility is engineered to eventually surpass 300 MW — a threshold that puts it firmly in the conversation as one of Asia's most significant AI and cloud infrastructure hubs.

The demand side isn't speculative. Cloud providers and technology companies are competing hard for capacity, and Japan has become a tier-one market for digital infrastructure as AI workloads scale up across the Asia-Pacific region. AirTrunk CEO Robin Khuda said in a statement that Japan represents 'one of the world's most important cloud and AI markets,' with the company committed to building infrastructure that supports its long-term growth.

Japan is one of the world's most important cloud and AI markets, and we're committed to building the digital infrastructure that enables its long-term growth.

Twelve Banks, One Record Deal — Who Backed It?

The financing was arranged by a consortium of 12 lenders acting as mandated lead arrangers and bookrunners. Sumitomo Mitsui Banking Corporation (SMBC), MUFG, Crédit Agricole CIB and Société Générale led the group — a mix of Japanese and European institutional heavyweights that signals how seriously global capital markets are treating AI infrastructure as an asset class right now.

The loan was structured under AirTrunk's green loan framework, which ties the financing to strict energy efficiency requirements across its facilities. That's not just ESG window dressing — green financing frameworks carry reporting obligations and efficiency benchmarks, meaning AirTrunk has contractual accountability tied to power consumption and emissions performance.

Japan's $8 Billion AI Bet — How Big Is AirTrunk's Footprint?

This deal doesn't exist in isolation. AirTrunk's total Japan investment now exceeds $8 billion across a four-campus network: TOK1, TOK2, OSK1 and OSK2. Once fully operational, the combined capacity across all four sites is projected at around 530 MW — which would make it one of the largest hyperscale networks in the country. The company also recently announced a second hyperscale campus in Osaka and a new Japan headquarters.

For context on ownership: Blackstone and the Canada Pension Plan Investment Board acquired AirTrunk in 2024 in a transaction valued at over $16 billion — itself the largest data center acquisition globally at the time. The scale of that deal, and now this record green loan, tells you something about where sovereign and institutional capital is placing its biggest AI infrastructure bets.

How Does This Compare to Crypto Miners Chasing AI Revenue?

The timing invites comparison. CleanSpark is reportedly looking to raise around $1.15 billion for Bitcoin mining and data center expansion. Core Scientific locked in a $500 million Morgan Stanley loan — with an option to scale to $1 billion — to fund similar infrastructure plays. Both are meaningful numbers. But AirTrunk just raised more, faster, from 12 sovereign-aligned bank lenders, under a green finance framework, with zero mining exposure.

That gap matters. Crypto miners pivoting to AI data centers are chasing the same demand signal, but they're doing it with different capital structures, different counterparties, and frankly different credibility with institutional lenders. AirTrunk isn't pivoting. It was built for this moment — and the capital markets are treating it accordingly.