Crescent Electric Supply Appoints Dennis DeSousa as Senior Vice President

EAST DUBUQUE, IL, June 8, 2011 — Crescent Electric Supply Company has announced the appointment of Jerry R. Whitaker to its Board of Directors. An electrical industry veteran, Whitaker most recently served as President, Electrical Sector — Americas at Eaton Corporation, a diversified power management company and a global technology leader in electrical, hydraulic, aerospace and truck and automotive components, systems and services.

“We are very pleased to have Jerry join our board,” said Marty Burbridge, Crescent Electric Supply president and CEO. “His knowledge of the industry, ability to successfully integrate acquisitions as part of an overall growth strategy and his foresight in positioning Eaton as a green-minded energy management company will play a key role in guiding the Company’s growth strategy.”

As President, Electrical Sector — Americas, Whitaker oversaw the P&L, manufacturing, operations, sales, marketing, technology and product development for four operational groups comprised of twelve divisions, 17,900 associates and $3.8B in revenue. His group successfully integrated eight substantial acquisitions in the past five years.

Jerry resides in Pittsburgh, PA and currently serves on the boards of the Carnegie Science Center, the Allegheny Conference on Community Development, Pittsburgh Middle East Institute and the Corporate Circles Board of the Pittsburgh Cultural Trust.

About Crescent Electric Supply Company

Based in East Dubuque, Illinois, Crescent Electric Supply Company is one of the nation’s largest independent distributors of electrical hardware and supplies. The company has more than 130 branches in 26 states, serving contractors, original equipment manufacturers (OEM) and the maintenance, repair and operations (MRO) needs of commercial, industrial, institutional, and utility customers. In addition to the Crescent Electric brand, customers are served by BA Supply in Missouri, Interstate Electric Supply in Idaho and Oregon, Mesco Electrical Supply in Ohio, National Electric Supply in New Mexico, Womack Electric Supply in Virginia and North Carolina, and Stoneway Electric in Washington and Idaho.