CHICAGO, Feb. 15 /PRNewswire-FirstCall/ -- Integrys Energy Group, Inc. (NYSE:TEG) will host an Investor and Analyst Day in New York for institutional investors and analysts on Wednesday, February 17, 2010. The event will include presentations by the executive management team on the Company's business operations and anticipated financial results for 2010 and 2011, as well as Q&A sessions. Presentations will begin at 8:00 a.m. and will conclude at 12 noon (Eastern). The event will be webcast live and for replay purposes at http://www.integrysgroup.com/investor/presentations.aspx. If you would like to attend the event in person, please contact Delia Cannan of Taylor Rafferty at (212) 889-4350. About Integrys Energy Group, Inc. Integrys Energy Group is a diversified holding company with regulated utility operations operating through six wholly owned subsidiaries, Wisconsin Public Service Corporation, The Peoples Gas Light and Coke Company, North Shore Gas Company, Upper Peninsula Power Company, Michigan Gas Utilities Corporation, and Minnesota Energy Resources Corporation; nonregulated operations serving certain energy markets in the United States through its wholly owned nonregulated subsidiary, Integrys Energy Services; and also a 34% equity ownership interest in American Transmission Company LLC (an electric transmission company operating in Wisconsin, Michigan, Minnesota, and Illinois). More information about Integrys Energy Group, Inc. is available online at http://www.integrysgroup.com/. DATASOURCE: Integrys Energy Group, Inc. CONTACT: Steven P. Eschbach, CFA, Vice President - Investor Relations of Integrys Energy Group, Inc., +1-312-228-5408 Web Site: http://www.integrysgroup.com/

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