1045 Hickory Street Pewaukee, WI 53072 www.cooperpower.com News Release Contact: Stephen Weinstein (262) 691-8241 stephen.weinstein@cooperindustries.com Cooper Power Systems to Exhibit at 2010 IEEE PES Conference and Expo Learn more about the company’s range of power delivery products and solutions at Booth 627. WAUKESHA, WI, April 19, 2010 – Cooper Power Systems, a division of Cooper Industries, plc (NYSE: CBE), will exhibit at the 2010 IEEE PES Transmission and Distribution Conference and Exposition at the Ernest N. Morial Convention Center in New Orleans, La., April 19-22, 2010. IEEE provides the international power-delivery community with the information and details necessary to manage technology and business solutions now and in the future. As an IEEE Expo exhibitor, Cooper Power Systems will showcase a variety of products and solutions designed to support electric utilities’ successful deployment of smart grid projects, as well as the advantages associated with alternative dielectric fluids, like its noncombustible, soy-based Envirotemp FR3 Fluid. “From environmentally friendly dielectric fluids to integrated energy automation systems, Cooper Power Systems remains at the forefront of innovative power-delivery solutions” said Mike Stoessl, Division President, Cooper Power Systems. “We look forward to discussing these and our range of other products and services with IEEE attendees.” As a provider of comprehensive reliability and productivity solutions for utility, commercial and industrial customers, Cooper Power Systems maintains an Energy Automation Solutions (EAS) group providing innovative smart grid technologies and solutions that enable customers to optimize electrical grid performance. Expo attendees and interested media are encouraged to visit Cooper Power Systems at Booth 627 for a demonstration on how the company is helping utilities realize their vision of the smart grid. To learn more about Cooper Power Systems, visit www.cooperpower.com. -More- Cooper Power Systems – Page 2 Editor’s Note: For additional information, contact Lauren Ban at (412) 394-6611 or lauren.ban@bm.com. About Cooper Power Systems Cooper Power Systems, Inc., with 2009 revenues of approximately $1.1 billion, is a division of Cooper Industries plc. (NYSE: CBE). Cooper Power Systems is a global manufacturer of world-class power delivery and reliability solutions for the electrical and industrial markets. Through its Energy Automation Solutions group, it is also a leading provider of software, communications and integration solutions that enable customers to increase productivity, improve system reliability, and reduce costs. For more information, please visit www.cooperpower.com. About Cooper Industries Cooper Industries plc (NYSE: CBE) is a global manufacturer with 2009 revenues of $5.1 billion, approximately eighty-nine percent of which are from electrical products. Founded in 1833, Cooper's sustained level of success is attributable to a constant focus on innovation, evolving business practices while maintaining the highest ethical standards, and meeting customer needs. The Company has eight operating divisions with leading market share positions and world-class products and brands including: Bussmann electrical and electronic fuses; Crouse-Hinds and CEAG explosionproof electrical equipment; Halo and Metalux lighting fixtures; and Kyle and McGraw-Edison power systems products. With this broad range of products, Cooper is uniquely positioned for several longterm growth trends including the global infrastructure build-out, the need to improve the reliability and productivity of the electric grid, the demand for higher energy-efficient products and the need for improved electrical safety. In 2009, sixty-one percent of total sales were to customers in the industrial and utility end-markets and thirty-nine percent of total sales were to customers outside the United States. Cooper has manufacturing facilities in 23 countries as of 2009. For more information, visit the website at www.cooperindustries.com. ### 2