GT Advanced Technologies and Powertec Energy Corporation Sign Memorandum of Understanding

  GT Advanced Technologies and Powertec Energy Corporation Sign Memorandum of
  Understanding

Business Wire

NASHUA, N.H. -- March 28, 2013

GT Advanced Technologies (NASDAQ: GTAT) and Powertec Energy Corporation
(“Powertec”) announced today the execution of a memorandum of understanding
(MOU), which states Powertec’s intention to purchase polysilicon technology
and equipment from GT for their phase 2 and 3 expansion projects. Design work
for these projects has begun and Powertec currently expects to begin ordering
GT equipment and technology in the second half of 2014.

Powertec was founded in 2010 with WalsinLihwa Group, United Microelectronics
Corp. (UMC), and Sino American Silicon Products Inc. (SAS) as major
shareholders. In 2011, Powertec began its phase 1 project, located in Taiwan’s
Changbin Industrial Park, at which time it purchased 6,000 MTA polysilicon
production technology and equipment from GT. The equipment for phase 1 was
shipped in 2012. Powertec’s phase 1 project is on track for commercial
operation in the first half of 2014 in line with when the solar industry,
which has experienced a downturn since 2011, is expected to recover.

“When our plant is fully operational next year, we will immediately begin
debottlenecking work to increase our phase 1 capacity to 7,500 MTA. We expect
to produce high-quality polysilicon at a cash cost that will enable us to
successfully compete on a global scale,” said YiYi Tai, chairman of
Powertec.“In addition, Powertec and GT have already started designing the
phase 2 and 3 expansion projects. Construction of our next phase is expected
to begin immediately after the successful startup of phase 1. Total capacity
at our current site is expected to reach 27,500 MTA after all three phases are
completed.”

With increasing demand for higher solar power conversion efficiency,
polysilicon quality is becoming increasingly important. In addition, there is
strong demand in Taiwan from leading Taiwan semiconductor companies such as
UMC and SAS for ultra high-quality electronic-grade polysilicon. Powertec’s
phase 1 high-quality capacity as well as phase 2 and 3 electronic grade
capacity are expected to meet not only future solar demand, but also domestic
semiconductor industry demand in Taiwan.

Scott Kuo, president of Powertec, said, “GT is recognized for its
industry-leading polysilicon production technology with a successful track
record of helping top-tier producers achieve high volume, low-cost production.
The combination of our highly experienced team with GT’s ongoing support and
cooperation with our current and future polysilicon production plans form a
powerful partnership, and this MOU is a testament to our great confidence in
each other.”

“Powertec is building a world class polysilicon facility,” said Dave Keck, GT
Advanced Technologies executive vice president,world-wide sales and service.
“It has a top tier organization with the experience to be a leader in
supplying both electronic and solar grade polysilicon. GT and Powertec look
forward to future collaboration as Powertec expands their polysilicon
production capabilities.”

About Powertec

Established in October 2010, Powertec Energy Corporation is a Taiwan based
company with a focus on producing high-quality polysilicon for solar and
semiconductor industries. Powertec aims to promote solar energy and bring
advancement to semiconductor materials with continuous improvement in
polysilicon manufacturing technology.

About GT Advanced Technologies Inc.

GT Advanced Technologies Inc. is a diversified technology company with
innovative crystal growth equipment and solutions for the global solar, LED
and electronics industries. Our products accelerate the adoption of new
advanced materials that improve performance and lower the cost of
manufacturing. For additional information about GT Advanced Technologies,
please visit www.gtat.com.

Forward-Looking Statements

Certain of the information in this press release relate to the Company's
future expectations, plans and prospects for its business and industry that
constitute "forward-looking statements" for the purposes of the safe-harbor
provisions of the Private Securities Litigation Reform Act of 1995, including
but not limited to: Powertec intends to purchase polysilicon technology and
equipment from GT for phase 2 and phase 3 expansion projects; Powertec expects
to begin ordering GT equipment and technology in the second half of 2014;
Powertec’s phase 1 project is on track for commercial operation in the first
half of 2014; the solar industry is expected to recover from the downturn
(which began in 2011) in the first half of 2014; Powertec expects to be able
to produce high-quality polysilicon at a cash cost that will enable Powertec
to successfully compete on a global scale; construction of Powertec’s next
phase is expected to begin immediately after the successful start-up of phase
1; total capacity at Powertec’s current site is expected to reach 27,500 MTA
after all three phases are completed; there is increasing demand for higher
solar power conversion efficiency; and Powertec’s phase 1,2 and 3 capacity are
expected to meet not only future solar demand, but also domestic semiconductor
industry demand in Taiwan. . 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 forward-looking statements. Factors that may cause actual events to differ
materially from those expressed or implied by our forward-looking statements
include the impact of continued decreased demand and/or excess capacity in the
markets for the output of our solar and sapphire equipment, sales of the
Company’s DSS equipment offering will be very limited in the future;
additional impairment charges that may be incurred in the future may be
material and may have an impact on the Company’s business; general economic
conditions and the tightening credit market having an adverse impact on demand
for the Company's products, the possibility that changes in government
incentives may reduce demand for solar products( which would, in turn, reduce
demand for our equipment), 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 Advanced Technologies Inc.'s filings with the Securities and
Exchange Commission, including the statements under the heading "Risk Factors"
in the company's transition report on Form 10-K for the nine month period
ended December 31, 2012. Statements in this press release should be evaluated
in light of these important factors. The statements in this press release
represent GT Advanced Technologies Inc.'s expectations and beliefs as of the
date of this press release. GT Advanced Technologies Inc. anticipates that
subsequent events and developments may cause these expectations and beliefs to
change. GT Advanced Technologies 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.

Contact:

Media
GT Advanced Technologies
Jeff Nestel-Patt, 603-204-2883
jeff.nestelpatt@gtat.com
or
Investors/Analysts
GT Advanced Technologies
Ryan Flaim, 603-681-3869
Ryan.Flaim@gtat.com