CAPE GIRARDEAU, Missouri, June 18 -- Ameren, a provider of electric power services, issued the following news release: Ameren Missouri will soon be replacing 20-year-old technology for natural gas customers throughout southeast Missouri. The company plans to install upgraded natural gas modules to existing meters in Cape Girardeau and Dexter starting in July. This upgrade will provide detailed information to Ameren Missouri's natural gas customers so they can manage how they use energy and see   more