Xbox One gaming systems are one of the most popular gaming platforms on the market. With over 100 million units sold, Xbox One is one of the most popular gaming platforms in the world. However, how much power does an Xbox One use? According to Microsoft, an Xbox One uses around 50 watts when idle and 150 watts when active. This means that an Xbox One can use up to 150 watts while playing games or streaming media. This is a significant amount of power and could potentially affect your battery life if used regularly.