For more information, contact:

Jim Donaldson Advanced Energy Industries, Inc. 970.407.6374

Marna Shillman Advanced Energy Industries, Inc. 970.407.6280 marna.shillman@aei.com

Voorhees, New Jersey (December 6, 2000)—Advanced Energy Industries, Inc. (Nasdaq: AEIS) named Dr. Imran Bhutta Divisional Vice President of Engineering for AE’s plant in Voorhees, New Jersey. Dr. Bhutta has responsibility for the entire design engineering function at the plant, including development, firmware and software, CAD, and applications engineering.

In announcing the new appointment, AE Voorhees President Bill Ruff, said, "Imran brings impressive technical expertise and dedication to our design engineering activities. His special strengths are design and simulation, which will be of tremendous help as we focus on high-frequency power supply applications for plasma-based manufacturing."

Dr. Bhutta brings 16 years of corporate and academic experience to his new position. His area of expertise is design and simulation of high-frequency circuits including ceramic hybrid circuits. Dr. Bhutta joined AE with the October 1998, merger of AE and RF Power Products (RFPP).

Advanced Energy is a global leader in the development, marketing, and support of integrated technology solutions that are central in the manufacture of semiconductors, data storage products, and flat panel displays as well as other mission-critical power applications. Original equipment manufacturers 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 key subsystems for vacuum process systems including power conversion and control solutions, process monitoring and machine control tools, ion-beam sources, dynamic temperature control and measurement products, 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.