1045 Hickory Street Pewaukee, WI 53072 Phone: (262)524-3300 Fax: (262)524-3319 www.cooperpower.com News Release Contact: Jerome Yakel (262) 691-8271 jerome.yakel@CooperIndustries.com Cooper Power Systems Announces Yukon Advanced Energy Services Software Release 5.0 Latest release adds support for new two-way devices and enhanced demand response functionality to the already feature rich and field-proven software suite. WAUKESHA, WI, October 5, 2010 – Cooper Power Systems, a division of Cooper Industries plc (NYSE: CBE), today announced the availability of the Yukon Advanced Energy Services Platform version 5.0. The company has implemented Yukon at more than 200 utilities including Cooperatives, Municipals and Investor Owned Utilities. Cooper Power Systems taps into this broad user base to drive the development of its rich software roadmap and industry-leading devices to meet the ever changing needs of multiple utility departments with a single, secure, enterprise Smart Grid software platform. Today’s release of Yukon 5.0 advances Cooper’s commitment to Smart Grid investment with strategic enhancements to the Yukon Demand Response Management System (DRMS) to support operation of today’s complex Demand Response programs and also provides enhanced data analysis for Cooper’s Power Line Carrier and Wireless AMI technologies. Yukon 5.0 features a newly designed DRMS portal with a rich, flexible interface that allows operators to easily find crucial information such as the event status, historical control times and feedback associated with specific devices or customer groupings. The Yukon DRMS also features a unique method to efficiently initiate demand response events as wide as full system or as targeted as ad hoc regions, substations, or individual distribution feeders to easily support the enhanced grid management techniques necessary in today’s demand response programs. “We continue to invest in the development of innovative software features and intelligent devices to meet the needs of our customers,” said Tom Pitstick, vice president and general manager of Energy Automation Solutions, a strategic business unit at Cooper Power Systems focused on Smart Grid solutions. “Our customers continue to utilize Yukon’s end-to-end secure enterprise software for multiple applications as we support the evolution of their Smart Grid roadmap.” -More- Cooper Power Systems – Page 2 Yukon 5.0 is available for general release and current Yukon customers have already began upgrading to the new version. Editor’s Note: For additional information, contact Lauren Ban at (412) 394-6611 or Lauren.ban@bm.com . 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. ###