Power-One Sets Date For 2010 Fourth Quarter Earnings Release

CAMARILLO, Calif., Jan. 20, 2011 (GLOBE NEWSWIRE) -- In conjunction with Power-One, Inc.'s (Nasdaq:PWER) 2010 fourth quarter financial results announcement, members of the public are invited to listen to the company's live quarterly conference call on the internet on Thursday, February 3, 2011 at 2:00 p.m. Pacific Time / 5:00 p.m. Eastern Time. The purpose of the conference call is to discuss the company's 2010 fourth quarter financial results. The conference call will feature Richard Thompson, Chief Executive Officer and Gary Larsen, Chief Financial Officer.

Financial results will be released over the newswires after the market closes on Thursday, February 3, 2011. The press release will also be posted on Power-One's corporate web site. Investors who would like to listen to the live conference call may go to the investor relations section at http://investor.power-one.com/events.cfm . An online re-broadcast of the call will also be available on the site.

Power-One's 2010 Fourth Quarter Conference Call Info
Date:	Thursday, February 3, 2011
Time:	2:00 PM Pacific Time / 5:00 PM Eastern Time;
Access:	Available on the web at www.power-one.com

About Power-One

Power-One designs and manufactures energy-efficient power conversion and power management solutions, including inverters for alternative/renewable energy, such as wind and solar, and products for routers, data storage and servers, wireless communications, optical networking, semiconductor test equipment, industrial markets and custom applications. Power-One, with headquarters in Camarillo, California, has global sales offices, manufacturing, and R&D operations in Asia, Europe, and the Americas. Power-One is a public company listed on NASDAQ under the ticker symbol PWER. For more information about the Company, please visit www.power-one.com .

The Power-One, Inc. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=7338

CONTACT: For Investors:
         Kevin Trosian
         Vice President, Finance & Investor Relations
         [phone]

         For Press:
         Edelman for Power-One
         Jon Murchinson
         Phone: [phone]

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