‘It has been performing as designed’: High Prairie wind farm up and running in northeast Missouri Kirksville Daily Express It hasn’t been hard to notice the skyline changes in rural Adair and Schuyler counties as 175 wind turbines were installed over the last year. Standing at 500 feet tall, with rotating blades that are each about 200 feet in length, the massive turbines are mixed in among crops and cattle. Those turbines are fully operational as part of Ameren Missouri’s High Prairie Renewable Energy Center, which straddles the two counties. The turbines can produce enough energy to power 120,000 homes. Ameren hosted media and local officials for a tour of the facility on Thursday, showing what goes on behind the scenes and how the operation works.