Ameren Missouri — the electricity provider for most of mid-Missouri — operates the state’s only nuclear power plant in ...

The NRC is reviewing a request from the Callaway Nuclear Plant to temporarily reduce control rods from 53 to 52 during its ...

Promoters of the 1976 petition were upset that the Public Service Commission allowed Union Electric -- now known as Ameren -- to pass on the costs of constructing the Callaway nuclear power plant ...