That's not far from St. Louis and Fort Leonard Wood, a hub for basic training among other things. I wonder if that had any impact in the location.
I imagined the location has to do with the nearby Callaway Nuclear power plant, and the solar projects that Ameren have been putting up in Montgomery County for the past few years.
It’s about 80 miles from the city proper, out in the middle of nowhere essentially, so unlikely to employ anyone that actually lives in St. Louis.