In 2021, Winter Storm Uri brought record-breaking low temperatures to the people of Texas, overwhelming the under-designed Texas power grid. 4.5 million homes and businesses lost power, over $16 billion in electricity costs were overcharged, and over 240 people died due to freezing temperatures and complications from the storm. This case study discusses what went wrong that causes the lights to go out, including a summary of the key players responsible for the disaster.