1045 Hickory Street Pewaukee, WI 53072 Phone: (262)524-3300 Fax: (262)524-3319 www.cooperpower.com News Release Contact: Julie Layer 763-543-7774 Jules.Layer@CooperIndustries.com Cooper Power Systems Selected to Deploy Advanced Metering Infrastructure Solution at Mohave Electric Cooperative American Reinvestment and Recovery Act Provides Funds for Smart Meters WAUKESHA, WI, November 3, 2010 — Cooper Power Systems, a division of Cooper industries plc (NYSE: CBE), today announced that it has been selected by Mohave Electric Cooperative to deploy an advanced metering infrastructure solution as part of its Smart Grid Program Initiative. Funding provided by the American Reinvestment and Recovery Act (ARRA) will support a portion of the 25,000 new electric smart meters featured within the AMI solution envisioned for Mohave Electric Cooperative— which is currently providing electricity to more than 39,000 services over some 1,445 miles of energized line, with an electrical service area of nearly 1,300 square miles across three counties. The AMI solution deployment will extend over a rapid 12-month period in order for Mohave Electric Cooperative to immediately experience the benefits of the smart meter’s two-way communication. Mohave Electric Cooperative will leverage Cooper Power Systems’ Yukon advanced energy services software platform to interface with third-party software using a MultiSpeak® interface. ―Building the communication infrastructure is a critical part of Mohave’s Smart Grid plan. This flexible communication foundation provides the opportunity to introduce enhanced data collection for operations, as well as services and tools such as smart meter technology to help members know more about their energy usage and manage it better,‖ said Tyler Carlson, Mohave Electric CEO. With more than 250 installations, Cooper Power Systems’ Yukon advanced energy services software platform is helping cooperatives, municipals, and investor-owned utilities increase billing accuracy, improve operational efficiencies and achieve extraordinary customer satisfaction levels. -More- Cooper Power Systems – Page 2 Yukon’s integrated delivery process and Web-based management dashboards provide real-time visibility into program performance, operational efficiencies, and other defined metrics—as well as interfaces to a variety of third-party applications. ―Mohave recognized that Cooper Power Systems has energy automation solutions across the entire Smart Grid footprint from the substation to the home,‖ said Tom Pitstick, vice president and general manager of the Energy Automation Solutions division at Cooper Power Systems. ―Our solutions feature proven technologies that are reliable, scalable and upgradeable.‖ Cooper Power Systems: Commitment to Smart Grid: Cooper Power Systems has long been a provider of comprehensive reliability and productivity solutions for utility, commercial and industrial customers. The Energy Automation Solutions (EAS) group within Cooper Power Systems is a leading provider of innovative smart grid technologies and solutions that enable customers to optimize their electrical grid performance. These solutions include Advanced Metering Infrastructure (AMI), Demand Response (DR), Smart Sensors, Power Systems Engineering Software and Services, Substation Automation and Feeder Automation. 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 or cooperpowereas.com. About Cooper Industries Cooper Industries plc (NYSE:CBE) is a global manufacturer with 2009 revenues of $5.1 billion. 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 seven operating divisions with leading market share positions and world-class products and brands including: Bussmann electrical and electronic fuses; Crouse-Hinds and CEAG explosion-proof 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 long-term 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