GT Solar Commissions Solar Wafer Production Line in Spain

Enables Cost-Effective Market Entry for DC Wafers
ANAHEIM, Calif.--(Business Wire)--
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 has received final acceptance
for the design, installation and commissioning of one of the most
technologically-advanced turnkey wafer fabrication lines in Spain.

Created for Leon-based DC Wafers, the state-of-the-art wafer production line
(GT-WAFFABTM) includes GT Solar`s GT-DSS450TM ingot growth technology, coupled
with advanced wafering systems, and automated in-line inspection tools. GT
Solar`s turnkey services process experts worked closely with DC Wafer`s
engineers to optimize the wafer line to increase productivity, boost quality and
line yields, and lower production costs. The line was designed to produce
30-megawatts (MW) of multi-crystalline solar wafers annually; it will likely
exceed that target by up to an additional 5 MW, as the line is already operating
at a better than expected polysilicon consumption rate.

"GT Solar`s proven technology and manufacturing know-how, in combination with
the expertise of our manufacturing team, have enabled DC Wafers to build an
extremely efficient, cost-effective facility that is allowing us to produce
high-quality silicon wafers to meet our customers` very specific needs," said
Ismael Guerrero Arias, DC Wafers` director and chief technology officer. "Our
company is conscious of the positive implications that generating clean energy
has for the environment and our local community in terms of job growth, and we
are committed to the development of the photovoltaic industry. To those ends, we
will continue to focus our R&D strategies on reducing costs, saving energy and
achieving maximum quality and efficiency."

"The successful commissioning of DC Wafer`s new wafer line was accomplished
through great teamwork between our teams," said Ron Jones, vice president and
general manager of GT Solar`s turnkey business. "We believe that DC Wafers is
well situated in today`s market and we look forward to further strengthening our
partnership with them to help optimize their competitive position as they expand
their business."

GT Solar provides turnkey solutions for every process of the PV manufacturing
value chain including wafer, cell, and module lines. The company has
successfully installed a variety of turnkey line configurations in countries
around the globe including China, Greece, India, Italy, Spain, Taiwan, and the
United Kingdom.

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.

About DC Wafers Investments, S.L:

DC Wafers is the first Spanish owned company dedicated to the manufacturing of
multicrystalline silicon wafers for the photovoltaic industry. The company
methods are designed to satisfy the most demanding quality specifications of the
PV industry. For additional information about DC Wafers, please visit
www.dcwafers.com.

Media
GT Solar
Susan Vaillancourt, 603-589-3782
susan.vaillancourt@gtsolar.com
or
Investors/Analysts
GT Solar
Bob Blair, 603-681-3869
bob.blair@gtsolar.com
or
DC Wafers
Juan Guerrero, +34 695 155366
jguerrero@dcwafers.com

Copyright Business Wire 2009