Horizon President Speaks

May 22, 2007 - Savannah, Georgia - Horizon President Frank Davis was a featured speaker
today at the Utility Supply Management Alliance (USMA) annual conference at the Savannah
Convention Center. Frank spoke at the Supplier Diversity Forum that was held as part of
the conference. The USMA is a non-profit organization founded with a mission of providing
a non-commercial forum for utility supply chain leaders and suppliers to discuss strategic and
tactical issues facing the electric utility and natural gas industries. Key members include the
Southern Company, Duke Energy, PG&E, DTE Energy, Constellation Energy, Florida Power And
Light, Entergy, and ABB.