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Dow Jones Partners with SunPower to Build 4.1-Megawatt Solar Power System
One of the nation's largest corporate solar power systems

SOUTH BRUNSWICK, N.J. and SAN JOSE, Calif., Jun. 21, 2010  /PRNewswire/ --Dow Jones & Company and SunPower Corp. (NASDAQ: SPWRA)(NASDAQ: SPWRB) today announced that SunPower has been selected to install a high-efficiency solar power system totaling 4.1 megawatts at Dow Jones' corporate offices in central New Jersey.

The system will include 3.6 megawatts of elevated solar panels above parking areas and a 522-kilowatt rooftop installation. When completed early next year, the system will be one of the nation's largest solar power installations operating at a corporate site, and is expected to generate the equivalent of 15 percent of current electricity needs for Dow Jones' South Brunswick campus.

"Renewable energy is part of a sustainable business plan for Dow Jones," said Dean DelVecchio, the company's chief information officer and chief administrative officer. "With solar energy, Dow Jones is helping the environment and its business at the same time."

A publisher of news and business information around the globe, Dow Jones maintains a 200-acre campus on U.S. Route 1 in South Brunswick, N.J. Nearly 2,000 people work at the facility, Dow Jones's largest.

At the site, SunPower is installing SunPower T5 Solar Roof Tile, the solar industry's first non-penetrating rooftop product that combines a high-efficiency SunPower solar panel, frame and mounting system into a single pre-engineered unit. Tilted at a five-degree angle, the T5 Roof Tile system approximately doubles the energy generated per square meter compared with other systems that are mounted flat onto commercial rooftops.

"This solar system is one of many initiatives at Dow Jones intended to reduce waste, protect the environment and trim expenses. We will continue to seek smart solutions for the future of our business," said Andy Schwartzberg, vice president for general administrative services at Dow Jones.

The system is being partially financed through PSE&G's Solar Loan Program, through which PSE&G offers loans for solar power.

"SunPower offered turnkey design and installation services and high-efficiency solar technology to optimize the power generated by the system and the savings that Dow Jones will achieve on their electricity costs," said Tom Leyden, managing director at SunPower. "We applaud their leadership in taking advantage of PSE&G's Solar Loan Program. Clean, reliable solar power makes good sense today for businesses and our environment."

About Dow Jones & Company

Dow Jones & Company (www.dowjones.com) is a News Corporation company (Nasdaq: NWS, NWSA; ASX: NWS, NWSLV; www.newscorp.com) and a leading provider of global news and business information. Its principal products include The Wall Street Journal, Dow Jones Newswires, Dow Jones Factiva, Barron's and MarketWatch. Through its Local Media Group, Dow Jones operates community-based newspapers and Web sites. Dow Jones also provides news content to television and radio stations.

About SunPower

Founded in 1985, SunPower Corp. (NASDAQ: SPWRA)(NASDAQ: SPWRB) designs, manufactures and delivers the planet's most powerful solar technology broadly available today. Residential, business, government and utility customers rely on the company's experience and proven results to maximize return on investment. With headquarters in San Jose, Calif., SunPower has offices in North America, Europe, Australia and Asia. For more information, visit www.sunpowercorp.com.

SunPower's 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. The company uses words and phrases such as "will" and "expected" to identify forward-looking statements in this press release, including forward-looking statements regarding: (a) construction schedule; (b) power generation; (c) customer savings; and (d) environmental benefits. 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) unanticipated construction difficulties or potential delays in the project implementation process, including securing necessary permits, licenses or other governmental approvals; (ii) the risk of continuation of supply of products and components from suppliers; (iii) unanticipated problems with deploying the system on the sites; (iv) actual electricity generation; (v) the actual energy consumption rate; (vi) unexpected changes in utility service rates; (vii) variations in carbon dioxide emissions reductions; and (viii) other risks described in the company's Annual Report on Form 10-K for the year ended January 3, 2010, 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 Corp. All other trademarks are the property of their respective owners.

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SOURCE: SunPower Corp.

CONTACT: Howard Hoffman of Dow Jones, +1-609-520-4765,
Howard.Hoffman@dowjones.com; or Ingrid Ekstrom of SunPower Corp.,
+1-510-260-8368, iekstrom@sunpowercorp.com

Web Site: http://www.sunpowercorp.com/