That&#x27;s a variation on the &#x27;but whey don&#x27;t the theme&#x27;. In this case it <i>is</i> a valid question though, because the atmosphere of Mars is almost 200 times less dense than Earth&#x27;s. So you&#x27;d need a pretty big machine to get real power, the advantage is that mars gravity is 2.5 times or so less than Earth so making a large windmill is a lot easier than it is here. You might even get by with very thin shelled blades.