On July 27th last year, a sudden drop in voltage occurred in the Nanke Industrial Park in Taiwan, affecting the machines of some semiconductor manufacturing companies within the park. Less than a year later, this park experienced another power supply voltage drop around 2:00 PM yesterday. According to Taiwanese media reports, this power supply voltage drop affected companies such as Taiwan Semiconductor Manufacturing Company (TSMC), United Microelectronics Corporation (UMC), memory, display and testing.

UMC semiconductor manufacturing company stated that the voltage drop incident had a minor impact on production, with some wafers being damaged. The machine equipment needed to be restarted for calibration. Currently, most of the machines have almost fully resumed production. The exact amount of loss remains to be further calculated. Regarding the production disruptions, they will accelerate production through overtime work. The second-quarter operating outlook remains unchanged. 

TSMC stated that a short power outage occurred at the Nanshe plant at around 2:14 PM. The power supply in the affected areas quickly returned to normal. It is expected that this will not affect operations. The cause of the power outage is subject to the announcement of Taiwan Power Company. It is understood that apart from United Microelectronics Corporation (UMC), TSMC, memory, display, and testing companies have all been somewhat affected. TSMC responded that a short power outage occurred at the Nanshe plant, and the affected power supply quickly returned to normal. It is not expected to have an impact on operations. A large testing factory at Nanshe stated that two plant areas with a 161kV power supply range were briefly affected by the power outage, which affected production. The machines needed to be recalibrated, and the products under test also needed to be scrapped. The Nanshe Administration stated that at 2:59 PM, the Fenghua D/S substation of Taiwan Power Company experienced a 161kV GIS disconnect switch failure, causing a power outage in the Taichung and Kaohsiung parks, affecting some manufacturers. Currently, power supply in both parks has been restored.