ESR and STACK Break Ground on First Phase of 72 MW Data Centre Campus in Kansai, Japan

TOKYO, 28 April 2025 – ESR Group Limited (“ESR” or the “Group”), Asia-Pacific’s (“APAC”) leading New Economy real asset owner and manager, and STACK Infrastructure (“STACK”), the digital infrastructure partner to the world’s most innovative companies and a leading global developer and operator of data centres, are jointly constructing and operating a new data centre as part of a multi-phase 72-megawatt ^[1] (“MW”) data centre campus development in Keihanna, located in Japan’s Kansai region.

Construction of the first building, KIX01A, which has 18 MW of IT capacity, has commenced. It is expected to be ready for service in the second quarter of 2027. This facility has been pre-certified as LEED Gold for sustainable building design and construction.

The joint venture on KIX01A extends ESR and STACK’s partnership in APAC, which includes a 48 MW data centre development in Incheon, South Korea, to support the strong demand in artificial intelligence, cloud, and 5G+ technologies.

KIX01A is also part of ESR’s pipeline of four data centre assets in Japan and 2 GW of secured land and power across APAC. ESR’s first hyperscale site, the 25 MW Cosmosquare OS1 Data Centre in Osaka, will be ready for service in June 2025.

Stuart Gibson, ESR Group Co-founder and Co-CEO, said, “Building large-scale campus developments is a unique capability of ESR through our deep in-market expertise in accessing land and power and long-term commitment to collaborate with the local community to maximise positive impact for all stakeholders. By combining our strengths and capabilities with STACK, we can meet our hyperscale customers’ needs in a high-growth market and drive value for our investors.”

Diarmid Massey, CEO of ESR Data Centres, added, “Kansai has a growing demand for modern, energy efficient digital infrastructure. The ESR-STACK Keihanna campus will deliver state-of-the-art data centre capacity, scalability, and flexibility to support hyperscalers and large enterprises in a market that is expected to witness a doubling of critical IT load capacity within the next five years.”

Pithambar (Preet) Gona, Chief Executive Officer of STACK APAC, said, “Japan remains one of the most important and fastest-growing data centre markets in APAC, and our expansion into the Kansai region, combined with our existing 36MW campus in Tokyo, reflects STACK’s commitment to delivering critical capacity in strategic locations across the region. Together with ESR, we are proud to bring our proven delivery model and client-first approach to Kansai, enabling hyperscale clients to grow with confidence in this high-demand market.”

The ESR-STACK 72 MW Keihanna campus will feature robust access to power and network connectivity to ensure strong reliability for hyperscale, cloud, and large enterprise customers. Flexible business models allow customers to select a range of solutions, from colocation to customised build-to-suit offerings. In addition, higher rack densities and industry-leading power usage effectiveness, water usage effectiveness, and building standards also support evolving workloads while achieving sustainability targets.

[1] IT Load