Hitachi, Ltd., Brookfield Japan, Hartree Partners Singapore, and Tokyo Gas Co., Ltd. have executed an expanded Memorandum of Understanding (MoU) to develop power-integrated green data centres across Japan.
The strategic agreement adds Tokyo Gas to an existing partnership established by Hitachi, Brookfield, and Hartree in July 2025, broadening the technical and energy supply capabilities of the consortium.
Under the framework, the four companies will engineer a standardized, scalable model for power-integrated data centres that generate their own energy on-site. The approach aims to bypass regional power grid constraints, accelerate construction lead times, and expand potential site locations for energy-intensive artificial intelligence (AI) infrastructure.
The joint venture will launch its initial development projects in the Kanto and Kyushu regions.
Key strategic priorities and operational mechanisms include:
- Grid independence: Deploys on-site power generation to reduce operational reliance on traditional power grid connections and avoid local distribution bottlenecks.
- Standardized infrastructure model: Establishes a modular data center design framework intended for rapid deployment and scalable capacity expansion across regional markets.
- Localized energy utilization: Combines local energy generation with high-efficiency consumption architectures to support regional decarbonization targets.
- Consortium capabilities: Combines Hitachi’s digital and power system technologies, Brookfield’s infrastructure asset management expertise, Hartree’s energy trading capabilities, and Tokyo Gas’s utility generation capacity.
The companies stated that combining their respective energy and technological platforms directly addresses critical supply chain and infrastructure bottlenecks currently facing Japanese AI data center development, particularly power availability and grid stability.
