David W. Biegler Chairman, Estrella Energy

Mr. Biegler is the Chairman of Estrella Energy, L.P. He previously served as Chairman of Regency Gas Services, LLC, Vice Chairman, President and Chief Executive Officer of TXU Corp. and Chairman, President and Chief Executive Officer of ENSERCH Corp.

Mr. Biegler serves as a Director of Trinity Industries, Inc., Guaranty Financial Group and Austin Industries, as well as Chairman of the American Gas Foundation.  He also serves on the boards of numerous charitable organizations including the Children's Medical Center in Dallas, Texas.

Mr. Biegler has served has a Dynegy Director since 2003.