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Suntech Sets Another World Record for Multi-Crystalline Module Conversion Efficiency

HAMBURG, Germany and WUXI, China, Sept. 23 /PRNewswire-Asia/ -- Suntech Power Holdings Co., Ltd. (NYSE: STP), the world's leading manufacturer of crystalline silicon photovoltaic (PV) modules, today announced that it has beaten all previous records for multi-crystalline silicon module conversion efficiency, including its own record achieved last month. The new world record conversion efficiency (aperture area only) was measured at 16.53% by the Fraunhofer Institute for Solar Energy Systems ISE.

Suntech's world record breaking multi-crystalline silicon module is powered by Pluto PV cells utilizing solar grade silicon with each PV cell having a conversion efficiency well over 17%. In August, Suntech surpassed the previous record of 15.5% set by Sandia National Labs 15 years ago. The latest record is well above previous records and is a reaffirmation that Suntech's Pluto powered multi-crystalline modules have the highest conversion efficiency in the world.

"We are very pleased to announce that our Pluto technology has been recognized as the most efficient multi-crystalline silicon technology in the world," said Dr. Stuart Wenham, Suntech's Chief Technology Officer. "This shows that it is possible to combine both first class R&D and low cost manufacturing into a commercially viable business model that will bring clean alternative energy to the world's growing energy demands."

Dr. Martin Green, Research Director of the ARC Photovoltaics Centre of Excellence at the University of New South Wales, Australia, and member of the Progress in Photovoltaics Committee said, "The 16.53% conversion efficiency Suntech module has a clear margin over other multi-crystalline silicon photovoltaic technologies. It has set the new benchmark for the highest performance multi-crystalline module."

Dr. Zhengrong Shi, Suntech's Chairman and CEO, is scheduled to present a paper on the technology required to produce the Pluto powered multi-crystalline cells on a commercial scale at 2:45pm German time on Wednesday, 23 September 2009 at the European Photovoltaic Solar Energy Conference at the CCH Congress Centre and International Fair, Hamburg, Germany.

About the Fraunhofer Institute

The Fraunhofer-Gesellschaft undertakes applied research of direct utility to private and public enterprise and of wide benefit to society. By developing technological innovations and novel systems solutions for their customers, the Fraunhofer Institutes help to reinforce the competitive strength of the economy in their region, throughout Germany and in Europe. Their research activities are aimed at promoting the economic development of our industrial society, with particular regard for social welfare and environmental compatibility. The Fraunhofer-Gesellschaft's research work is oriented toward concrete applications and results. Pure basic research, as practiced at universities, is funded to almost 100% by public grants. Industrial R&D, up to prototype level, is largely financed by private enterprise. For more information please visit http://www.fraunhofer.de .

About Progress in Photovoltaics

Progress in Photovoltaics offers a prestigious forum for reporting advances in this rapidly developing technology, right through from research to practical application, and aims to reach all interested professionals, researchers, and energy policy-makers. The journal's Editorial Board is drawn from many countries with a deliberate balance of interests between research, industrial development and practical operation of PV systems, and plays an essential role in the refereeing of contributions. Contributions in the form of Full Papers and Short Communications are invited on the full range of PV topics and concerns. All submissions are rigorously peer reviewed. For more information, please visit http://as.wiley.com/WileyCDA/WileyTitle/productCd-PIP.html .

About Suntech

Suntech Power Holdings Co., Ltd. (NYSE: STP) is the world's leading solar energy company as measured by production output of crystalline silicon solar modules. Suntech designs, develops, manufactures, and markets premium quality, high-output, cost-effective and environmentally friendly solar products for electric power applications in the residential, commercial, industrial, and public utility sectors. Suntech's patent-pending Pluto technology for crystalline silicon solar cells improves power output by up to 12% compared to conventional production methods.

Suntech designs and delivers commercial and utility scale solar power systems through its wholly owned subsidiary Suntech Energy Engineering and will own and operate projects greater than 10 megawatts in the United States through Gemini Solar Development Company, a joint venture with Fotowatio Renewable Ventures. With regional headquarters in China, Switzerland and San Francisco and sales offices worldwide, Suntech is passionate about improving the environment we live in and dedicated to developing advanced solar solutions that enable sustainable development. For more information, please visit http://www.suntech-power.com .

Safe Harbor Statement

This press release contains forward-looking statements. These statements constitute "forward-looking" statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, and as defined in the U.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements can be identified by terminology such as "will," "expects," "anticipates," "future," "intends," "plans," "believes," "estimates" and similar statements. Such statements involve certain risks and uncertainties that could cause actual results to differ materially from those in the forward-looking statements. Further information regarding these and other risks is included in Suntech's filings with the U.S. Securities and Exchange Commission, including its annual report on Form 20-F. Suntech does not undertake any obligation to update any forward-looking statement as a result of new information, future events or otherwise, except as required under applicable law.

    For more information, please contact:

    For Suntech:
     In China:
     Rory Macpherson
     Investor Relations Director
     Suntech Power Holdings Co., Ltd.
     Tel:   +86-21-6288-5574
     Email: rory@suntech-power.com

    In the United States:
     Kristen McNally
     Executive Vice President
     The Piacente Group, Inc. (Investor Relations Counsel, Suntech)
     Tel:   +1-212-481-2050
     Email: suntech@tpg-ir.com

SOURCE Suntech Power Holdings Co., Ltd.

For Suntech -- in China, Rory Macpherson, Investor Relations Director of Suntech Power Holdings Co., Ltd., +86-21-6288-5574, or rory@suntech-power.com; or in the United States, Kristen McNally, Executive Vice President of The Piacente Group, Inc. (Investor Relations Counsel, Suntech), +1-212-481-2050, or suntech@tpg-ir.com