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San Juan Water District Flips on the Switch to SunPower Solar System
System to supply up to 90 percent of District's power needs, save nearly $12 million

GRANITE BAY, Calif. and SAN JOSE, Calif., July 20, 2011 /PRNewswire/ -- San Juan Water District flipped on the ceremonial switch to a newly completed, high efficiency solar power system from SunPower Corp. (NASDAQ: SPWRA, SPWRB) to supply up to 90 percent of the electricity consumed by their water treatment plant, booster pump station and administration buildings and save nearly $12 million in energy costs over the 25-year life of the system.*

Approximately 40 percent of the construction cost of the project will be offset by a California Solar Initiative rebate from PG&E, with the balance recovered through energy cost savings in the first nine years of operation. According to estimates provided by the U.S. Environmental Protection Agency, the system will offset the production of more than 1.5 million pounds of carbon dioxide emissions each year, which is equivalent to removing 3,525 cars from California's highways over the next 25 years.

"San Juan always looks for programs that benefit our customers," said Ted Costa, San Juan Water District board president. "This project will allow the district to minimize the long-term impacts on ratepayers from rising energy costs. When we have the opportunity to help the environment and improve our bottom line, that's a win/win."

SunPower designed and built the solar power system on approximately four acres of District-owned land. The company installed SunPower solar panels, the most efficient solar panels available on the market today, on a SunPower™ T0 Tracker system. The T0 Tracker is a ground-mounted system that rotates the panels to follow the sun during the day, increasing energy capture by up to 25 percent over conventional fixed-tilt systems, while significantly reducing land use requirements.

"With SunPower systems operating at more than 20 water agencies, representing approximately 20 megawatts in total, our experience and ability to deliver guaranteed performance sets us apart," said Jim Pape, president of SunPower's residential and commercial business group. "We applaud SJWD's decision to convert a small piece of underutilized land into an asset that generates clean, reliable solar power and significant savings. Solar power makes good sense today for public agencies and our environment."

*Savings are dependent upon the cost of power from PG&E throughout the life of the project.

About San Juan Water District

San Juan Water District is a community services district that provides drinking water to more than 265,000 people in portions of Sacramento and Placer counties. In addition to serving retail customers in Granite Bay, east Roseville, and the northeast portion of Sacramento County, the district wholesales water to Citrus Heights and Fair Oaks Water Districts, Orange Vale Water Company and the city of Folsom (north of the American River) and periodically to Sacramento Suburban Water District.

About SunPower

SunPower Corp. (NASDAQ: SPWRA, SPWRB) 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, visit www.sunpowercorp.com.

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

SOURCE SunPower Corp.

For further information: Nicole Quinonez, Crocker & Crocker, nicole@crockercrocker.com, +1-916-600-9533, or Ingrid Ekstrom, SunPower Corporation, iekstrom@sunpowercorp.com, +1-510-260-1368