Sempra Generation Selects Suntech and Zachry for Landmark Arizona Solar Power Plant

Backed by Suntech's power output warranty, the Mesquite Solar 1 solar plant is projected to generate more than 350,000 megawatt-hours of electricity annually – enough to power roughly 50,000 homes for decades. That clean electricity could offset roughly 200,000 tons of carbon emissions each year, similar to taking about 40,000 cars off the road or planting 20,000,000 trees. The project utilizes solar panel technology that does not require water to produce electricity.

Zachry will oversee the installation and integration of more than 800,000 Suntech multi-crystalline solar panels at the site. With 85 years of experience, Zachry has managed the engineering and construction of numerous industrial plants across the U.S., typically coal and gas-fired generation projects. The leading EPC provider is now diversifying its energy portfolio of projects to include solar and other types of renewable energy.

"We are excited about continuing our relationship with Sempra and working with Suntech – the world's largest producer of solar panels – to create hundreds of green jobs and promote sustainable economic development," said Steve Dedman, senior vice president of Zachry Holdings, Inc. "When completed this will be one of the largest solar plants in the world. Our participation in this very significant project signals Zachry's commitment to the solar market, and specifically utility-scale solar generation."

The solar power plant will be constructed about 30 miles west of Suntech's new Goodyear, Arizona, manufacturing facility, which will supply a portion of the solar panels for the Sempra Generation project. In addition, Suntech's technical team, working closely with Zachry, will support the execution of the project to meet Sempra Generation's power production expectations.

"We're thrilled to work with Sempra Generation and Zachry to realize one of the world's largest solar projects just down the road from our U.S. manufacturing base in Goodyear," said Steven Chan, President of Suntech America. "This landmark project further substantiates the ongoing expansion of our local manufacturing operations, which has just expanded to a second production shift and 78 employees, up from 40 employees when it commenced operations in October 2010. We will continue to grow our U.S. footprint and work with local partners such as Zachry to facilitate the growth of the U.S. solar industry."

Sempra Generation, a subsidiary of San Diego-based Sempra Energy, operates and maintains a fleet of natural gas-fueled power plants, and is a leading developer of solar and wind facilities that serve U.S. markets.

"Large, multi-phase solar projects like the 700-MW Mesquite Solar energy complex are at the heart of our renewable strategy," said Jeffrey W. Martin, president and chief executive officer of Sempra Generation. "That's why this first 150-MW phase is so important, and why we are pleased to partner with Suntech and Zachry as we begin developing this world-class solar complex."

Dr. Zhengrong Shi, Suntech's Founder, Chairman, and CEO said, "This project demonstrates that the solar industry is offering a competitive, fast, reliable and scalable solution for utility-scale electricity generation. With continued investments in R&D and production capacity, we are targeting to drive solar past retail grid parity in half of world markets by 2015."

About Zachry Holdings, Inc.

Zachry Holdings, Inc. is a privately held business engaged primarily in the engineering, construction, and maintenance of large industrial projects and facilities in the U. S. Based in San Antonio, Texas, the company participates in a wide range of the energy sector including traditional and renewable power, petrochemical, refining, forest products, and nuclear. Zachry has offices throughout the U.S. and safely employees over 15,000 craft and professional staff. Visit ZHI.com for more information. Zachry - It Takes a Force.

About Suntech

Suntech Power Holdings Co., Ltd. (NYSE: STP) produces industry-leading solar products for residential, commercial, industrial, and utility applications. With regional headquarters in China, Switzerland, and the United States, and gigawatt-scale manufacturing worldwide, Suntech has delivered more than 13,000,000 photovoltaic panels to thousands of customers in more than eighty countries. Suntech's pioneering R&D creates customer-centric innovations that are driving solar to grid parity against fossil fuels. Suntech's mission is to provide everyone with reliable access to nature's cleanest and most abundant energy source.

For more information about our people and products 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, and includes the project's completion in 2013; the creation of jobs; the installation's annual electricity production and carbon offset; and the ability to drive down the cost of solar electricity for consumers. 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.