Mitsubishi Electric Kumamoto Earthquake Plant Operations Resumption Update

Mitsubishi Electric Corp announced the Mitsubishi Electric Kumamoto Earthquake Plant Operations Resumption after suspending operations at its plants in Koshi City and Kikuchi City due to the 2026 Kumamoto earthquake that occurred on July 28. The facilities produce products including automotive semiconductors, and the company confirmed that no employees were injured during the incident. Both plants gradually restarted operations from the afternoon of July 30 as recovery activities progressed.

The plant buildings sustained no major damage, allowing Japan-based manufacturing operations to move toward recovery. Cleanroom operations have restarted, while the company continues equipment inspections and start-up procedures across affected production areas. Production activities are resuming sequentially as each manufacturing process completes the required equipment start-up phase. The company is carefully managing the restart process to ensure stable operations while verifying production equipment performance.

The recovery of these facilities is important for automotive semiconductor supply continuity, as semiconductor components support various vehicle systems and electronic applications. The company is focusing on a controlled production restart by completing equipment checks and restoring individual manufacturing processes step by step. The gradual approach helps maintain operational reliability while addressing the impact caused by the earthquake-related suspension.

Frequently Asked Questions

When did Mitsubishi Electric resume operations after the Kumamoto earthquake?
Mitsubishi Electric resumed operations gradually from the afternoon of July 30 after temporarily suspending production following the 2026 Kumamoto earthquake. The company confirmed that employees were safe and that plant buildings experienced no major damage. Cleanroom operations restarted, while equipment inspections and start-up procedures continued. Production is returning in stages as each process completes verification and equipment readiness checks to ensure stable manufacturing operations.