MERRIMACK, N.H.--(BUSINESS WIRE)--GT Solar International, Inc. (NASDAQ: SOLR), a global provider of polysilicon production technology, and sapphire and silicon crystalline growth systems for the solar, LED and other specialty markets, today announced that it has received a $23.4 million follow-on order from South Korea-based polysilicon producer OCI Company, Ltd. for its newest SDR™ 400 CVD reactors and other equipment to support OCI’s polysilicon plant expansion.

“We are pleased by the confidence OCI has demonstrated with our polysilicon production technology,” said Tom Gutierrez, GT Solar’s president and CEO. “The additional throughput and cost savings of the SDR 400 CVD reactor allows OCI to further enhance their cost competitiveness.”

The SDR 400 reactor has proven capability of producing over 400 metric tons of polysilicon annually and continues GT Solar’s leadership position for developing the most energy efficient reactors in the industry. The SDR 400 reduces power consumption by an additional 20 percent per kilogram of polysilicon produced compared to GT Solar’s highly efficient SDR 300. OCI’s phase 3.5 expansion is expected to be completed in October 2011.

About GT Solar International, Inc.

GT Solar International, Inc. (NASDAQ: SOLR), a global provider of polysilicon production technology, and sapphire and silicon crystalline growth systems for the solar, LED and other specialty markets. The company's products and services allow its customers to optimize their manufacturing environments and lower their cost of ownership. For additional information about GT Solar, please visit www.gtsolar.com.

Forward-Looking Statements

Some of the statements in this press release are forward-looking in nature, including statements regarding throughput and cost savings. These statements are based on management’s current expectations or beliefs. These forward-looking statements are not a guarantee of performance and are subject to a number of uncertainties and other factors, many of which are outside the Company’s control, which could cause actual events to differ materially from those expressed or implied by the statements. Factors that may cause actual events to differ materially from those expressed or implied by our forward-looking statements include the possibility that the Company is unable to recognize revenue on customer contracts, that technological changes could render existing products or technologies obsolete, the Company may be unable to protect its intellectual property rights, competition from other manufacturers may increase, exchange rate fluctuations and conditions in the credit markets and economy may reduce demand for the Company’s products and various other risks as outlined in GT Solar International, Inc.’s filings with the Securities and Exchange Commission, including the statements under the heading “Risk Factors” in the Company’s annual report on Form 10-K for fiscal 2010 filed on June 4, 2010.

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