Power-One 2009 Third Quarter Conference Call

In conjunction with Power-One, Inc.’s (NASDAQ:PWER) 2009 third 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, October 22, 2009 at 2:00 p.m. PT / 5:00 p.m. ET. The purpose of the conference call is to discuss the company’s 2009 third quarter financial results. The conference call will feature Richard Thompson, Chief Executive Officer and Linda Heller, Senior Vice President of Finance and Chief Financial Officer.

Financial results will be released over the newswires after the market closes on Thursday, October 22, 2009. The press release will also be posted on Power-One’s corporate Web site: www.power-one.com. Investors who would like to listen to the live conference call may go to the investor relations section at www.power-one.com. An online re-broadcast will be available through October 29.

About Power-One

Power-One designs and manufactures energy-efficient power conversion and power management solutions for alternative/renewable energy, routers, data storage and servers, wireless communications, optical networking, medical diagnostics, military, railway controls, semiconductor test equipment, and custom applications. Power-One, with headquarters in Camarillo, CA, has global sales offices, manufacturing, and R&D operations in Asia, Europe, and the Americas. Please visit www.power-one.com for more information.