2010 Top 200 U.S. CEOs

Biography
President and Chief Executive Officer of the Company (effective May 1, 2009; Executive Vice President and Chief Operating Officer of the Company and Chairman, President and Chief Executive Officer of UE through April 2009). Mr. Voss began his career with UE in 1969. He was elected Senior Vice President of UE, CIPS and Ameren Services in 1999, of AEG in 2001, of CILCORP and CILCO in 2003 and of IP in September 2004. He was elected Executive Vice President and Chief Operating Officer of the Company effective January 1, 2005 and Executive Vice President of UE, CIPS, CILCORP, CILCO and IP effective in May 2006. In January 2007, Mr. Voss was elected Chairman, President and Chief Executive Officer of UE. In April 2007, in connection with certain organizational changes to the Company's structure and reporting relationships, Mr. Voss relinquished his officer positions at CIPS, Ameren Services, CILCO and IP and in May 2007, he relinquished his officer positions at CILCORP and AEG. Effective May 1, 2009, Mr. Voss assumed the position of President and Chief Executive Officer of the Company and relinquished his positions of Executive Vice President and Chief Operating Officer of the Company and Chairman, President and Chief Executive Officer of UE. Director of the Company since April 2009. Director of the following Ameren subsidiaries: CIPS (2001-2008); UE (2001-2009); CILCO (2003-2008); AEG (2003-2008); IP (2004-2008); CILCORP (2003-2008; May 2009-March 2010).