Renesas Electronics Resumes Kawashiri Factory Production After Kumamoto Earthquake

Renesas Electronics Corporation has restarted part of the production lines at its Kawashiri Factory in Minami Ward, Kumamoto City, after operations were halted following the 2026 Kumamoto earthquake. Manufacturing resumed on August 4, one day earlier than initially planned, after safety inspections progressed faster than expected. The facility is a key production site for front-end manufacturing processes supporting automotive microcontrollers and analog semiconductor products, and the company expects to steadily increase output throughout the coming weeks.

The production suspension began after the earthquake that struck on July 28, prompting comprehensive inspections to ensure employee safety and equipment integrity before operations could restart. The original recovery schedule called for phased production to begin on August 5. However, the successful completion of critical safety assessments enabled Renesas to advance the restart by one day, allowing selected manufacturing processes to resume on August 4 while additional production lines continue to be restored in stages.

Across Japan, semiconductor manufacturing facilities affected by the earthquake are gradually returning to normal operations. The semiconductor fabrication plant operated by Taiwan Semiconductor Manufacturing Co., Ltd. in Kumamoto Prefecture has also resumed production. In addition, manufacturing operations at the image sensor facility of the Sony Group have restarted, reflecting broader progress in restoring semiconductor production across the region following the disruption caused by the earthquake.

Industry recovery efforts indicate that semiconductor production facilities throughout the Kyushu region are expected to return to pre-earthquake operating levels by the end of August. Renesas likewise plans to restore the Kawashiri Factory to its previous production capacity during the same period. The company is also evaluating additional production later this year to compensate for manufacturing volumes lost while the facility remained offline, helping stabilize supply for automotive semiconductor customers.

Frequently Asked Questions

When did Renesas resume production at its Kawashiri Factory after the earthquake?
Renesas Electronics restarted partial production at its Kawashiri Factory on August 4, 2026, one day earlier than originally planned after safety inspections were completed ahead of schedule. The factory had suspended operations following the July 28 Kumamoto earthquake. The company expects to progressively restore additional production lines and achieve full pre-earthquake production capacity by the end of August while also evaluating catch-up manufacturing later in the year to offset lost output.