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GT Solar to Participate in Canaccord Genuity Growth Conference

Canaccord Genuity Growth Conference
Date: Tuesday, August 9, 2011
Presentation Time: 3:30 p.m. ET

The presentation will be webcast on a live and archived basis and can be accessed in the 'Events and Presentations' section of GT Solar's Investor Relations website at http://investor.gtsolar.com/.

Name, Ticker and CUSIP Change

The company also announced that effective Monday, August 8, 2011 with the market open on NASDAQ the company will change its name, website url, ticker, and CUSIP as follows:

New Name: GT Advanced Technologies Inc.
New Website URL: www.gtat.com
New Ticker: GTAT (NASDAQ)
New CUSIP: 36191U 106

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. Effective August 8, 2011, 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. For additional information about GT Solar, please visit www.gtsolar.com or www.gtat.com.

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