The Gratiot County Wind Farm has 133 wind turbines scattered over more than 30,000 acres. It's the largest wind farm in Michigan. Each 1.6 megawatt wind turbine can generate enough power for 350 homes.
And this is what it sounds like when you stand directly beneath a wind turbine that stretches more than 450 feet into the sky with the wind blowing between 10 to 15 mph.
(Listen below - You can hear the turbine slow down - I think it's neat, but I'm a nerd.)