ESR, STACK form JV to build 72 MW data center in Kansai

Construction of the first 18 MW building has commenced.

ESR Group Limited (ESR) and STACK Infrastructure are jointly constructing and operating a new data center as part of a multi-phase, 72-megawatt (MW) campus development in Keihanna, Kansai, es.

Construction of KIX01A, the first building with 18 MW of IT capacity, has commenced and is expected to be operational in Q2 2027.

The data center campus will offer robust power and network connectivity to ensure high reliability for hyperscale, cloud, and large enterprise customers supporting evolving workloads sustainably.

The joint venture extends ESR and STACK’s partnership in APAC, which includes a 48 MW data center development in Incheon, South Korea.

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

“Kansai has a growing demand for modern, energy-efficient digital infrastructure. The ESR-STACK Keihanna campus will deliver state-of-the-art data center 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,” Diarmid Massey, CEO of ESR Data Centres said.

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