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Lawrence D. Firestone
Advanced Energy Industries, Inc.
Annie Leschin/Vanessa Lehr
Advanced Energy Industries, Inc.

Frederick A. Ball is Appointed to Advanced Energy Board of Directors


Fort Collins, Colo., October 29, 2008—Advanced Energy Industries, Inc. (NasdaqGM: AEIS) today announced that Frederick A. Ball was appointed to its Board of Directors on October 27, 2008. Mr. Ball currently serves as chief financial officer for Webroot, a software security company. He is also a member of the Board of Directors of Electro Scientific Industries, a provider of photonic and laser systems for micro-engineering applications, and serves as a member of their audit committee.

Hans Betz, president and chief executive officer of Advanced Energy, said, “We are excited to welcome Fred to our Board. His executive leadership experience in finance, operations and the semiconductor markets should make him a strong addition to the board of Advanced Energy Industries.”

Mr. Ball brings a wealth of experience to Advanced Energy. His past positions include senior vice president and chief financial officer of Big Band Networks, a provider of network platforms for broadband multimedia services. He also held various executive positions at Borland Software Corporation, a provider of enterprise software development solutions, including chief financial officer and executive vice president of corporate development and mergers and acquisitions. In addition, Mr. Ball worked at KLA-Tencor Corporation, a manufacturer of semiconductor equipment, where he served as vice president, mergers and acquisitions and vice president of finance. Mr. Ball holds a Bachelor of Science degree in accounting and spent 11 years as a CPA at PricewaterhouseCoopers (PwC).

About Advanced Energy
Advanced Energy develops innovative power and control technologies that enable high-growth, plasma thin-film manufacturing processes worldwide, including semiconductors, flat panel displays, data storage products, solar cells, architectural glass, and other advanced product applications. Advanced Energy also develops grid connect inverters for the solar energy market