What just happened? On Thursday, Taiwan's state-run Xingda power plant experienced a failure that affected a large portion of the island's residents and businesses. It caused power decreases and grid failures across the nation and hit several regions that are home to Taiwan's semiconductor manufacturers. TSMC is currently assessing the impact after observing voltage drops lasting between 400ms and 1000ms at some locations. The Xingda plant, run by Taipower , supplies an estimated one-seventh of Taiwan's total electrical output. The outage lasted 90 minutes and affected an estimated five million households. The cause of the incident was attributed to a…