Hanwha SolarOne to Announce Fourth Quarter 2011 and Full Year 2011 Financial Results on March 15, 2012 SHANGHAI, Feb. 27, 2012 /PRNewswire/ -- Hanwha SolarOne Co., Ltd. ("Hanwha SolarOne" or the "Company") (NASDAQ: HSOL), a vertically integrated manufacturer of silicon ingots, wafers and photovoltaic ("PV") cells and modules in China, today announced that it will release its unaudited financial results for the fourth quarter of 2011 and full year 2011 before the market opens on Thursday, Mar 15, 2012. On the same day, management will host a conference call to discuss the results at 8:00 AM Eastern Daylight Time (8:00 PM Shanghai time on the same day). Mr. Ki-Joon HONG, Chairman and CEO; Mr. Hee Cheul KIM, President: Mr.Dong Kwan KIM, Chief Strategy Officer; Mr. Jung Pyo SEO, Chief Financial Officer; and Mr. Paul Combs, Vice President of Investor Relations, will discuss the results and take questions following the prepared remarks. The dial-in details for the live conference call are as follows: U.S. Toll Free Number: U.S. New York local number: International dial-in number: China Toll Free Number: Passcode: HSOL A live webcast of the conference call will be available on the investor relations section of the Company's website at: www.hanwha-solarone.com. A replay of the webcast will be available for one month. A telephone replay of the call will be available for seven days after the conclusion of the conference call. About Hanwha SolarOne Hanwha SolarOne Co., Ltd. (NASDAQ: HSOL) is a vertically-integrated manufacturer of silicon ingots, wafers, PV cells and modules. Hanwha SolarOne offers high-quality, reliable products and services at competitive prices. Partnering with third-party distributors, OEM manufacturers, and system integrators, Hanwha SolarOne serves the utility, commercial, government, and residential markets. The company maintains a strong presence worldwide, with employees located throughout Europe, North America and Asia, and embraces environmental responsibility and sustainability, with an active role in the voluntary photovoltaic recycling program. Hanwha Group, Hanwha SolarOne's largest shareholder, is active in solar project development and financing, and plans to produce polysilicon in the future. For more information, please visit: http://www.hanwha-solarone.com. Investor Contact: Paul Combs V.P. of Investor Relations Building 1, 18th Floor 1199 Minsheng Road, Shanghai, PRC 200135 P. R. China Tel: 86-21-3852 1533 / Mobile: 86 138 1612 2768 E-mail: paul.combs@hanwha-solarone.com Linda Bergkamp Tel: +1 480 614 3004 E-mail: lbergkamp@ChristensenIR.com Tip Fleming Tel: + 852 9212 0684 E-mail: tfleming@ChristensenIR.com SOURCE Hanwha SolarOne Co., Ltd.