CAPE GIRARDEAU, Missouri, June 27 -- Ameren Missouri, a subsidiary of Ameren, issued the following news release: Ameren Missouri has donated 100 ENERGY STAR certified window air conditioners to the East Missouri Action Agency. 50 units will be distributed to customers throughout Cape Girardeau and another 50 throughout Park Hills. On average, energy-efficient air conditioners cost less than a dollar a day to operate, allowing customers to stay cool and safe. This year's air conditioner donatio  more