Suntech Modules Excel in Independent PID Test

                Suntech Modules Excel in Independent PID Test

Suntech Modules, Tested by VDE, Highly Resistant to Potential-Induced
Degradation (PID)

PR Newswire

SAN FRANCISCO, Oct. 31, 2012

SAN FRANCISCO, Oct. 31, 2012 /PRNewswire/-- Suntech Power Holdings Co., Ltd.
(NYSE: STP), the world's largest producer of solar panels, today announced
that its Wd poly, Wd mono and Ve poly series modules are highly resistant to
potential-induced degradation (PID) as confirmed in recent tests performed by
the Association for Electrical, Electronic and Information Technologies (VDE),
one of the world's leading testing and certification institutes.

According to the VDE test report, the tested Suntech modules "show no
significant degradation at the end of the test sequence..." with all of the
modules exhibiting negligible change in output power within the test lab
measurement accuracy, and no changes in visual appearance.

"This near-perfect result meets our quality expectations," said Stefan
Jarnason, Technical Director at Suntech Power Australia and one of the world's
foremost experts in module reliability testing. "Amidst a highly-competitive
global market, Suntech continues to focus on helping customers achieve a
better levelized cost of energy and long term energy yields instead of just
lower sticker prices."

The stringent PID test sequence, which is based on the protocol established by
TUV Rhineland, begins with flash-testing the modules to determine their
electrical performance characteristics, as well as an inspection using
electroluminescence (EL) imaging. Then, the modules are subjected to high
humidity and negative voltages of 1000 volts for one week. Finally, the
modules are again tested for electrical performance and for any visual defects
using EL imaging.

Solar systems often operate in difficult environmental conditions with the
potential to stress the photovoltaic modules and accelerate module
degradation. Through careful and diligent material selection, manufacturing
processes, and quality control procedures, Suntech significantly reduces
performance risks associated with PID.

To learn more about Suntech's commitment in quality control, please visit the
Suntech Connect blog, like us on Facebook, or follow us on Twitter
@Suntech_Connect for regular updates.

About Suntech

Suntech Power Holdings Co., Ltd. (NYSE: STP) produces industry-leading solar
products for residential, commercial, industrial, and utility applications.
With regional headquarters in China, Switzerland, and the United States, and
gigawatt-scale manufacturing worldwide, Suntech has delivered more than 25
million photovoltaic panels to over a thousand customers in more than eighty
countries. Suntech's pioneering R&D creates customer-centric innovations that
are driving solar to grid parity against fossil fuels. Suntech's mission is to
provide everyone with reliable access to nature's cleanest and most abundant
energy source.

For more information about Suntech's people and products visit:
http://www.suntech-power.com.

Safe Harbor Statement

This communication contains forward-looking statements. These statements
constitute "forward-looking" statements within the meaning of Section 27A of
the Securities Act of 1933, as amended, and Section 21E of the Securities
Exchange Act of 1934, as amended, and as defined in the U.S. Private
Securities Litigation Reform Act of 1995. These forward-looking statements can
be identified by terminology such as "will," "expects," "anticipates,"
"future," "intends," "plans," "believes," "estimates" and similar statements,
and include actual PID of Suntech modules. Such statements involve certain
risks and uncertainties that could cause actual results to differ materially
from those in the forward-looking statements. Further information regarding
these and other risks is included in Suntech's filings with the U.S.
Securities and Exchange Commission, including its annual report on Form 20-F.
Suntech does not undertake any obligation to update any forward-looking
statement as a result of new information, future events or otherwise, except
as required under applicable law.

For further information, please contact:
Walker Frost
Communications Manager
Tel: +1 (415) 268-8881
Email: walker.frost@suntech-power.com


SOURCE Suntech Power Holdings Co., Ltd.

Website: http://www.suntech-power.com
 
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