People: Ameren Corporation (AEE)

Thomas R. Voss has been appointed as President, Chief Executive Officer of Ameren Corporation effective May 1, 2009. Mr. Voss joined Union Electric Company (“UE”) in 1969 as an engineer. He was elected senior vice president of UE, Central Illinois Public Service Company (“CIPS”), and Ameren Services Company (“Ameren Services”) in 1999, of Ameren Energy Generating Company (“Genco”) in 2001, of CILCORP Inc. (“CILCORP”) and Central Illinois Light Company (“CILCO”) in 2003, and of Illinois Power Company (“IP”) in 2004. Each of UE, CIPS, Ameren Services, Genco, CILCORP, CILCO and IP is a subsidiary of Ameren. In 2003, Mr. Voss was elected president of Genco; he relinquished his presidency of this company in 2004. He was elected executive vice president and chief operating officer of Ameren in 2005. In 2006, he was elected executive vice president of UE, CIPS, CILCORP, CILCO and IP. In 2007, Mr. Voss was elected chairman, chief executive officer, and president of UE. He relinquished his positions at CIPS, CILCORP, CILCO and IP in 2007, and will relinquish his positions at UE effective May 1, 2009. Upon Mr. Voss’s assumption of his new responsibilities, the position of chief operating officer of Ameren will be eliminated.