MHI Demonstrates Cooling Energy Savings at Fujitsu Data Center

TOKYO, July 13, 2026 – Mitsubishi Heavy Industries (MHI) has successfully reduced energy consumption at Fujitsu's AKASHI Data Center through a cooling system optimization project. The demonstration achieved a 2.3% decrease in cooling energy usage within a multi-vendor equipment setup.

While traditional optimization efforts target individual equipment, MHI's approach focused on holistic control across the entire cooling system, including shared infrastructure and air handling units. This system-level strategy is projected to yield a total energy saving of 7.6% when applied to the entire data center.

Surging global demand for data centers has made energy consumption a key constraint, with cooling systems alone accounting for over 60% of non-IT electricity use. Increased AI workloads further complicate operational stability, limiting the effectiveness of existing energy-saving methods, particularly in multi-vendor environments.

The project, conducted without service interruption, utilized MHI's vendor-agnostic cooling system optimization technology. Improvements in server room temperature distribution and fine-tuning of cooling water temperatures led to the observed energy reduction. MHI plans to further integrate this approach to support sustainable and reliable data center operations globally.