Image: Weather Service International

This picture shows the temperature (in Fahrenheit) departure from normal during this recent cold snap. 

Late Sunday night, extraordinarily cold temperatures made their way into Texas. As the temperature dropped, the people of Texas switched on the heat, with much of it being electric, in an effort to stay warm. Unfortunately, people weren't the only ones to feel the cold grip of mother nature. Extremely low temperatures, ice, and snow caused power plants to go offline. As the demand for power rapidly shot up, supply drastically fell.