Japan's data center construction market is entering a major investment cycle, driven by the expansion of AI infrastructure and stable power supplies. The Greater Tokyo and Osaka metropolitan areas will remain the primary hubs, while data center development is expected to become more geographically diversified.
Investment in large-scale digital infrastructure is accelerating in Japan's data center construction market, driven by growing demand for generative AI and cloud services. New facilities are increasingly being designed around high-density computing, advanced cooling, resilient power systems and AI-ready architectures.
Approximately 90% of Japan's existing facilities are concentrated in the Greater Tokyo and Osaka metropolitan areas. Geographic diversification is being promoted against the backdrop of government efforts to strengthen disaster resilience and secure power supply capacity. Tokyo and Osaka will remain the primary construction hubs, while development is also expanding into emerging clusters such as Hokkaido, Saitama and the Keihanna area.
The market was valued at US$7.3 billion in 2025 and is expected to expand at a CAGR of 6.4% from 2026 to 2036. The market is projected to exceed US$13.6 billion by the end of 2036.
As AI data centers become more widespread, new technologies and approaches such as liquid cooling, high-voltage infrastructure and modular construction are becoming increasingly important. This is expected to create new business opportunities for EPC contractors, MEP engineering firms and companies involved in power infrastructure.
Government efforts to promote geographic diversification, including the establishment of regional data center hubs, along with renewable energy connections and green transformation initiatives, are expanding opportunities in data center construction.