1045 Hickory Street Pewaukee, WI 53072 www.cooperpower.com News Release Contact: Jerome Yakel Cooper Power Systems E-mail: jerome.yakel@CooperIndustries.com Phone: 262-691-8271 Melissa Mirabile AT&T E-mail: mmirabil@attnews.us Phone: 212-453-2327, Mobile: 914-841-5180 Cooper Power Systems and AT&T Recognized for Best Smart Meter/Smart Grid Product Service Running on the AT&T wireless network, Cooper Outage Advisor honored at UTC Telecom 2011. PEWAUKEE, WI, June 23, 2010 — Cooper Power Systems, a division of Cooper Industries plc (NYSE: CBE) and AT&T recently announced that Cooper Power Systems Smart Sensors™ have been recognized with the Best Smart Meter/Smart Grid Product Award at UtilitiesTelecom Council (UTC) 2010 in Indianapolis, Indiana. The award was given to Cooper Power Systems for Smart Sensors, including the company’s OutageAdvisor™ and VARAdvisor™, both of which use the AT&T wireless network to transmit information in real-time over the AT&T wireless network. “Utilities are looking for best in breed Smart Grid Solutions,” said Cooper Power Systems group president, Mike Stoessl. “This award gives that recognition to one of Cooper Power Systems’ smart grid solutions, which can improve reliability while also reducing carbon emissions; both are key drivers for creating a smarter grid.” Through a business relationship with Cooper Power Systems announced last year, AT&T offers the Cooper Power Systems Smart Sensor solution, which provides utilities with a reliable means to locate and isolate problems on electricity delivery lines such as faults and failed capacitor assets, and communicate the event within the system. The solution reduces the costly and time consuming faultchasing and inspection methods that stress system components to improve reliability and grid efficiency. -More- Cooper Power Systems – Page 2 “This award is the latest example of AT&T’s commitment to smart grid technology in the M2M (machine to machine) space, helping businesses and organizations to use wireless technology to streamline business processes and provide real-time monitoring of energy assets,” said Michael Antieri, President, Advanced Enterprise Mobility Solutions, AT&T Business Solutions. AT&T offers a range of strategic mobility products and services to the utility industry, including wireless solutions for field service workers, outage detection and remote monitoring. AT&T’s dedicated team of industry specialists understands the business process from end to end and translates technical solutions into meaningful business value for customers. For more information on AT&T’s enterprise mobility offerings, visit http://www.business.att.com/enterprise/Portfolio/eb_mobility/. 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. Find More Information Online: Web Site Links: AT&T Web Site AT&T Enterprise Services Cooper Power Systems Related Media Kits: Mobility Solutions for Businesses Related Releases: AT&T to Offer Wireless Smart Grid Technology to Utility Companies AT&T Enhances Enterprise Mobility Offerings *AT&T products and services are provided or offered by subsidiaries and affiliates of AT&T Inc. under the AT&T brand and not by AT&T Inc. About AT&T AT&T Inc. (NYSE:T) is a premier communications holding company. Its subsidiaries and affiliates – AT&T operating companies – are the providers of AT&T services in the United States and around the world. With a powerful array of network resources that includes the nation’s fastest 3G network, AT&T is a leading provider of wireless, Wi-Fi, high speed Internet and voice services. A leader in mobile broadband, AT&T also offers the best wireless coverage worldwide, offering the most wireless phones that work in the most countries. -More- Cooper Power Systems – Page 3 It also offers advanced TV services under the AT&T U-verse® and AT&T │DIRECTV brands. The company’s suite of IP-based business communications services is one of the most advanced in the world. In domestic markets, AT&T Advertising Solutions and AT&T Interactive are known for their leadership in local search and advertising. In 2010, AT&T again ranked among the 50 Most Admired Companies by FORTUNE® magazine. Additional information about AT&T Inc. and the products and services provided by AT&T subsidiaries and affiliates is available at http://www.att.com. This AT&T news release and other announcements are available at http://www.att.com/newsroom and as part of an RSS feed at www.att.com/rss. Or follow our news on Twitter at @ATTNews. Find us on Facebook at www.Facebook.com/ATT to discover more about our consumer and wireless services or at www.Facebook.com/ATTSmallBiz to discover more about our small business services. © 2010 AT&T Intellectual Property. All rights reserved. 3G service not available in all areas. AT&T, the AT&T logo and all other marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T affiliated companies. 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, 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 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 endmarkets 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. ###