GT Solar to Participate in Investor Event

GT Solar International, Inc. (NASDAQ: SOLR), a global provider of specialized production equipment, process technology and turnkey manufacturing services for the solar power industry, today announced that it will participate in the following investor event:

Thomas Weisel Partners Alternative Energy & Natural Resources Conference

Date: Tuesday, November 10, 2009

Presentation Time: 8:35 am ET

A live and archived webcast of the presentation will be available on the Events and Presentation page in the Investor Relations section of the GT Solar Web site at http://investor.gtsolar.com/.

About GT Solar International, Inc.

GT Solar International, Inc., based in Merrimack, NH, USA, is a leading global provider of specialized production equipment, process technology and turnkey manufacturing services for the solar power industry. The company's products and services allow its customers to optimize their manufacturing environments and lower their cost of ownership, accelerating the drive towards grid parity. For additional information about GT Solar, please visit www.gtsolar.com.