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Advanced Energy Appoints New Business Unit Vice Presidents

Brenda Scholl has been named vice president and general manager of the DC Power SBU. Ms. Scholl most recently served as Advanced Energy's director of data storage and industrial markets. She has been with Advanced Energy since 1988, starting as product manager for DC products, and holding a number of positions in marketing thereafter. Prior to joining Advanced Energy she held positions in marketing and sales for Varian Associates and LFE Corporation.

Colin Quinn and Curtis Camus were named vice presidents and general managers of the newly formed Sources SBU. Mr. Quinn joined Advanced Energy as the senior marketing manager for data storage in 1996, and then became the director of plasma source development in 1998 to begin developing the new product line. Before joining Advanced Energy, Mr. Quinn spent fifteen years with Commonwealth Scientific as sales and marketing manager.

Mr. Camus is the former director of engineering and will head engineering development and planning for the Sources SBU. Mr. Camus joined Advanced Energy in 1987, leaving the company briefly to co-found Litmas Inc., a plasma gas abatement company in which Advanced Energy is the majority shareholder. Prior to joining Advanced Energy, he worked for Texas Instruments and Hughes Aircraft, where he designed analog electronics and high voltage power supplies. Advanced Energy also announced the formation of three additional SBUs. Bill Ruff, president of AE Voorhees, was named vice president and general manager of the RF Power SBU; Chris Fergen, vice president of the Tower subsidiary, and Tim Kerr, Senior Vice President of Engineering, were both named vice presidents and co-general managers of the Instrumentation SBU; and Ray Dils, president of the Sekidenko subsidiary, was named vice president and general manager of the Convergent Technologies SBU. All of the SBU vice presidents report to Jim Gentilcore, recently named executive vice president.

Doug Schatz, Advanced Energy's chairman and chief executive officer, said, "Our newly appointed vice presidents are long-time, dedicated Advanced Energy employees who have earned their heightened responsibilities as key business unit leaders. Their experience and expertise in these areas will be invaluable to the success of the newly formed business units, which add more scalability to Advanced Energy's internal structure. This will enable Advanced Energy to more quickly integrate new products and technologies as we pursue a growing total available market."

About Advanced Energy
Advanced Energy is a global leader in the development, marketing, and support of technology solutions that are central in the manufacture of semiconductors, data storage products, and flat panel displays. Original equipment manufacturers (OEMs) and end-users around the world depend on AE products when plasma-based technology plays a vital role in their manufacturing process. AE offers a comprehensive suite of products for vacuum process systems, including power management, temperature sensing, dynamic temperature control, gas delivery management, process monitoring and machine control tools, ion-beam sources, and plasma abatement technologies. AE technology solutions are sold and supported globally by direct offices, representatives, and distributors. Founded in 1981, AE is a publicly held company traded on Nasdaq under the symbol AEIS. AE's URL is www.advanced-energy.com.

Safe Harbor Statement
This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements represent the companies' reasonable judgments with respect to future events, but are subject to risks and uncertainties that could cause actual results to differ materially from those described in the forward-looking statements. Such forward-looking statements include, but are not limited to, statements regarding the success of the business units and statements regarding Advanced Energy's ability to more quickly integrate new products and technologies to address a growing total available market. Specific cautionary statements are discussed in Advanced Energy's SEC reports, including its Forms 10-Q and most recent annual report on Form 10-K. Advance Energy continues to be susceptible to fluctuations in quarterly and annual revenues and operating results and the volatility and cyclicality of the semiconductor and semiconductor capital equipment industries. The companies assume no obligation to update the information in this release. Free copies of this and other documents are available from the SEC at www.sec.gov or Advanced Energy at 1625 Sharp Point Drive, Fort Collins, Colorado 80525; 970-221-4670.