SunPower Corporation Announces Supply Agreement with Systems Integrator Kubokura for T5 Solar Roof Tile

   SunPower Corporation Announces Supply Agreement with Systems Integrator
                       Kubokura for T5 Solar Roof Tile

PR Newswire

SAN JOSE, Calif., Dec. 3, 2012

SAN JOSE, Calif., Dec. 3, 2012 /PRNewswire/ -- SunPower Corporation (NASDAQ:
SPWR) today announced that systems integrator Kubokura Densetsu Co. Ltd. has
signed a supply agreement for its T5 Solar Roof Tile. Kubokura will install
the T5 Solar Roof Tile on four leased rooftops in the Kanagawa Prefecture.
Utilizing the country's new feed-in-tariff, Kubokura will sell the electricity
generated by the 540-kilowatt solar systems back to the grid through the local
utility. The clean energy generated will be enough to serve more than 180
homes.

Tilted at a five-degree angle, the T5 Solar Roof Tile is the industry's first
all-in-one, non-penetrating photovoltaic rooftop product that combines solar
panel, frame and mounting system into a single pre-engineered unit. The T5
Solar Roof Tile interlocks for wind resistance and secure installation; its
patented design is adaptable to virtually any flat or low-slope rooftop.
Integrated into the T5 Solar Roof Tile is the high efficiency E20 / 327 Solar
Panel by SunPower Corporation.

"We are well positioned in the Japanese market with our high-efficiency
technology, and with our first T5 Solar Roof Tile supply agreement, we'll
increase our share of the rapidly-expanding commercial rooftop segment," said
Tom Werner, SunPower Corporation president and CEO. "Kubokura and the utility
will benefit from SunPower's leading technology, more than a quarter century
of experience and our commitment to guaranteed performance."

"We chose the T5 Solar Roof Tile system because it gave us maximum installed
capacity on limited rooftop space," said Satoshi Kubokura, senior managing
director. "With 20 percent efficiency solar panels integrated into the
all-in-one system, coupled with a non-penetrating installation that does not
require anchoring the system to the roof, the T5 Solar Roof Tile is easy to
install and minimizes waterproofing and structural risks on the rooftop
surface."

Kubokura will begin system construction at the end of this year and expects
completion next February.

SunPower Corporation will feature its T5 Solar Roof Tile at PV Japan, being
held in Chiba on December 5 through 7, in booth P09-802.

About SunPower Corporation

SunPower Corporation. (NASDAQ: SPWR) designs, manufactures and delivers the
highest efficiency, highest reliability solar panels and systems available
today. Residential, business, government and utility customers rely on the
company's quarter century of experience and guaranteed performance to provide
maximum return on investment throughout the life of the solar system.
Headquartered in San Jose, Calif., SunPower has offices in North America,
Europe, Australia, Africa and Asia. For more information, visit
www.sunpowercorp.com.

SunPower Corporation Forward-Looking Statements

This press release contains forward-looking statements within the meaning of
the Private Securities Litigation Reform Act of 1995. Forward-looking
statements are statements that do not represent historical facts and may be
based on underlying assumptions. SunPower uses words and phrases such as
"agreement," "well positioned," "will," and similar expressions to identify
forward-looking statements in this press release, including forward-looking
statements regarding being well positioned in the Japanese market and
increasing share in Japan. Such forward-looking statements are based on
information available to the company as of the date of this release and
involve a number of risks and uncertainties, some beyond the company's
control, that could cause actual results to differ materially from those
anticipated by these forward-looking statements, including risks and
uncertainties such as: (i) general business and economic conditions, and the
growth in the Japanese market for SunPower products; (ii) the continuation of
governmental and related economic incentives promoting the use of solar power;
(iii) manufacturing difficulties; (iv) Japanese customers' continued business
relationship with SunPower; and (v) other risks described in the company's
Annual Report on Form 10-K for the year ended January 1, 2012 and Quarterly
Reports on Form 10-Q for the quarters ended April 1, 2012, July 1, 2012 and
September 30, 2012 and other filings with the Securities and Exchange
Commission. These forward-looking statements should not be relied upon as
representing the company's views as of any subsequent date, and the company is
under no obligation to, and expressly disclaims any responsibility to, update
or alter its forward-looking statements, whether as a result of new
information, future events or otherwise.

SUNPOWER is a registered trademark of SunPower Corporation in the U.S. and
other countries. All other trademarks are the property of their respective
owners.

SOURCE SunPower Corp.

Website: http://www.sunpowercorp.com
Contact: Helen Kendrick, SunPower Corp., hkendrick@sunpowercorp.com, +1 408
240 5585, or Sachiko Masuda, Burson-Marsteller Toko, Sachiko.masuda@bm.com,
+81 3 3264-6687