For more information, contact:

Richard Beck Advanced Energy Industries, Inc. 970.407.6204 dick.beck@aei.com

Cathy Kawakami Advanced Energy Industries, Inc. 970.407.6732 cathy.kawakami@aei.com

Fort Collins, Colorado and Taipei, Taiwan (August 20, 2001)-Advanced Energy (Nasdaq: AEIS), an industry-leading provider of critical technology solutions for the manufacture of semiconductors, data storage products, and flat panel displays, today announced that it has entered into an agreement to license its New Power Supply Architecture (NPSA) technology for the high-end computing market to Delta Electronics (TSE: 2308), a leading switching power supply manufacturer and major supplier of video displays & electronic components for computer, telecommunication, networking and other industries.

Joseph Chang, director of sales and marketing for Advanced Energy’s NPSA products, said, “This agreement is an important milestone for our NPSA program. Delta Electronics has the reputation, infrastructure and customer relationships to broaden the NPSA product line, increase production and ultimately expand market share. We look forward to working with Delta as a key partner in this effort. The agreement allows Delta to use our technology in their product offerings to the computer, server and workstation markets.”

“The NPSA technology breaks new ground for power management in the high-end computing market,” Bahman Sharifipour, general manager of worldwide engineering management, Delta Electronics, said. “NPSA provides a solution that addresses some of our customers’ increasingly complex requirements for low voltage, high current, fast responding, compact microprocessor power supplies. This agreement will enable us to bring this new and cost-effective technology for high frequency DC-DC power conversion to our worldwide customer base in the high-end computing market.”

Advanced Energy will receive royalties from Delta Electronics based on the sale of products that use its NPSA technology. The licensing agreement is non-exclusive and remains effective through December 2003.

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

About Delta Electronics
Delta Electronics, Inc. is a world-class electronic component supplier in the information and communication industries with 22 sales offices, 16 manufacturing plants and 12 R&D/engineering labs around the world. It is the world’s largest merchant power supply manufacturer and a pioneer in rear projection display technologies. Delta is an advocate of green technologies and has devoted itself to providing energy efficient products to improve the quality of life with continuous innovation. Delta’s URL is www.deltaww.com

Safe Harbor Statement
This press release contains certain forward-looking statements subject to known and unknown risks and uncertainties that could cause actual results to differ materially from those expressed or implied by such statements. Such risks and uncertainties include, but are not limited to: fluctuations in quarterly and annual revenues and operating results, Advanced Energy's ongoing ability to develop new products in a highly competitive industry characterized by increasingly rapid technological changes, the volatility and cyclicality of the semiconductor and semiconductor capital equipment industries and other risks described in Advanced Energy's 10-K, Forms 10-Q and other reports and statements, as filed with the Securities and Exchange Commission. The company assumes no obligation to update the information in this press release.