NEWS

WIRES

OTHER

GT Solar Receives $81.7 Million in New Orders for Polysilicon Production Equipment and Technology

"We are pleased to add two new customers to our growing family of polysilicon producers," said Dave Keck, vice president and general manager of GT Solar's polysilicon technology business unit. "As polysilicon prices continue to fall, producers must operate their plants at the highest levels of productivity and efficiency to remain profitable. Our polysilicon production equipment and technology enables customers to produce high purity silicon at one of the lowest costs in the industry."

GT's polysilicon production equipment includes the industry's most productive and energy efficient CVD reactors and a full range of technology including hydrochlorination, filament and product processing equipment to provide a complete, low-cost end-to-end production solution.

About GT Solar International, Inc.

GT Solar International, Inc. is a global provider of polysilicon production technology, and sapphire and silicon crystalline growth systems and materials 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. GT Solar will be changing its name to GT Advanced Technologies as it establishes a new global brand. The new name reflects the broader range of markets and technologies the company now addresses since its acquisition of Crystal Systems in July of 2010. The transition to GT Advanced Technologies is expected to be completed in August 2011. 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 expected revenue from customer contracts. 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 2011 filed on May 26, 2011. GT Solar International, Inc. is under no obligation to, and expressly disclaims any such obligation to, update or alter its forward-looking statements, whether as a result of new information, future events, or otherwise.

Media
GT Solar
Jeff Nestel-Patt, 603-204-2883
jeff.nestelpatt@gtsolar.com
or
Investors/Analysts
GT Solar
Ryan Blair, 603-681-3869
ryan.blair@gtsolar.com