Tokyo Tatemono Breaks Ground on Hyperscale Data Center in Osaka’s Nanko Area, Targeting 2028 Launch
Tokyo Tatemono Co., Ltd. and SC Zeus Data Centers began construction in December 2025 on a hyperscale data center, Zeus OSA1, in Nanko Kita, Suminoe Ward, Osaka. The project is scheduled to commence Phase 1 operations in 2028 with an IT load of 25 MW. This marks Tokyo Tatemono’s first data center development project.
The company will own the land, building, and purpose-built data center infrastructure, and will provide server space, power supply, and related services to cloud service providers and enterprise users.
The site is located approximately 10 kilometers from major internet exchange points in central Osaka, enabling low-latency network connectivity suitable for advanced data processing such as financial transactions and real-time AI inference. The facility will be a seven-story, steel-frame structure with seismic isolation, offering a gross floor area of approximately 5,750 tsubo (approx. 204,000 sq. ft.).
The data center will adopt a liquid-cooling–compatible system and support high power density of up to 130 kW per rack. With a highly efficient design targeting a PUE of 1.19, the facility is intended to provide the high-performance environment required for next-generation AI applications.
In Japan’s data center market, investment in hyperscale facilities has been accelerating amid growing demand driven by generative AI. Unlike traditional enterprise data centers, which typically have IT loads of around 1–5 MW, hyperscale facilities are capable of supplying 20 MW or more and primarily serve cloud providers and large-scale AI companies. By the end of 2023, the number of hyperscale racks in Japan surpassed retail-type data centers for the first time.
In the Greater Osaka area, hyperscale development has been particularly active, with Australia-based AirTrunk operating a 20 MW facility and planning a second site with capacity of up to 100 MW.
Data Center Classification by Scale
Category | IT Load (Indicative) | Typical Customers | Design Philosophy |
Enterprise | 1–5 MW | Corporations | General-purpose design with an emphasis on redundancy |
Colocation | 5–20 MW | Multiple enterprises | Space- and power-based leasing model |
Hyperscale | 20 MW or more | Cloud service providers, AI companies | Extreme optimization of power efficiency and cooling performance |
Note: These classifications are provided as general guidelines, and definitions may vary depending on the source or market context.
Key Facts
Property Name: Zeus OSA1
Developer: Tokyo Tatemono Co., Ltd.; SC Zeus Data Centers
Location: 1-14-1 Nanko Kita, Suminoe Ward, Osaka (lot number)
Construction Start: December 2025
Completion: 2028 (Phase 1)
Number of Floors: 7F / B0 (steel-frame structure with seismic isolation)
Site Area: approx. 4,222 tsubo (approx. 150,700 sq. ft.)
Gross Floor Area: approx. 5,750 tsubo (approx. 204,000 sq. ft.)
IT Load: Phase 1: 25 MW