SunPower Renews Partnership with Non-Profit GRID Alternatives

        SunPower Renews Partnership with Non-Profit GRID Alternatives

High Efficiency Solar Panels Supplied Under 2013 Agreement Expected to
Generate $4.8 Million in Energy Savings for Families in Need

PR Newswire

SAN JOSE, Calif., Feb. 4, 2013

SAN JOSE, Calif., Feb. 4, 2013 /PRNewswire/ --SunPower Corp. (NASDAQ: SPWR),
a Silicon Valley-based manufacturer of high efficiency solar cells, solar
panels and solar systems today announced that it is renewing its supplier
partnership with GRID Alternatives, a Bay Area-based non-profit solar
installer.

Under terms of the agreement, SunPower is providing GRID Alternatives with its
high efficiency solar panels through a combination of donations and fair
market value sales. The renewed commitment will bring solar technology to
underserved communities across California and Colorado, generating
approximately $4.8 million in energy savings over a 30-year life of the solar
power systems. In addition, the partnership will provide thousands of hands-on
training opportunities for job seekers through GRID's volunteer-based
installation model.

"Solar is a recognized, clean energy resource that will help struggling
homeowners save on their electricity bills today and for years to come," said
GRID Alternatives co-founder and CEO Erica Mackie. "We are thrilled to
continue our long-standing partnership with SunPower."

SunPower has worked with GRID Alternatives since 2006 providing philanthropic
gifts and equipment and donating more than 1,300 employee volunteer hours to
help hundreds of families install solar electric systems on their rooftops.
This seven-year partnership is expected to generate approximately $15 million
in savings for these families over the life of their systems.

"It's rewarding to see SunPower's investment directly impact local families
looking to save on electricity costs or job trainees working to gain hands-on
experience," said SunPower President and CEO Tom Werner, who volunteered with
GRID Alternatives in 2012 to help install solar systems for two low-income San
Jose families. "We greatly value our seven-year partnership with GRID
Alternatives and look forward to continuing to provide the world's highest
efficiency, most reliable solar panels on the market today."

About SunPower Corp.
SunPower Corp.(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
and Asia. For more information, visitwww.sunpowercorp.com.

About GRID Alternatives
GRID Alternatives is a non-profit organization that brings the benefits of
solar technology to low-income communities. Using a barn-raising model, GRID
Alternatives leads teams of volunteers and job trainees to install solar power
on qualifying homes, providing needed savings for families struggling to make
ends meet while preparing workers for jobs in the fast-growing solar industry
and cleaning our air. Nearly 3,000 California families have benefited from the
program to-date, saving more than $80 million in lifetime electricity costs,
and more than 11,000 people have received hands-on solar installation
experience. For more information, visit www.gridalternatives.org.

SunPower is a registered trademark of SunPower Corp. All other trademarks are
the property of their respective owners.

SOURCE SunPower Corp.

Website: http://www.sunpowercorp.com
Contact: Julian Foley, GRID Alternatives, +1-510-731-1188,
jfoley@gridalternatives.org ; Amy Smith, SunPower Corp., +1-408-457-2718,
asmith@sunpowercorp.com