Orion Energy Systems: Appoints senior VP of human resources

Ralsky to provide scientific approach to recruitment, sales staff development

MANITOWOC, Wis. — Oct. 9, 2009 — Orion Energy Systems Inc. (Nasdaq: OESX) announced today that Stuart Ralsky, Ph.D., has joined the power technology enterprise as senior vice president of human resources.

Ralsky will oversee human resources operations for Orion including recruitment, selection, leadership and team development, and performance management.

“We believe our people and our partners are our greatest assets,” said Orion Chief Executive Officer Neal Verfuerth. “Stuart’s extensive education in organizational psychology and experience in leadership development will be vital as the economic recovery unfolds and we reignite our growth trajectory. We are now in a position to apply science to the recruitment and development of our sales force.”

Ralsky is the founder and owner of SLR Consulting, a Chicago-based firm specializing in management, leadership and executive coaching and development. Ralsky and SLR Consulting completed engagements with a primary focus on leadership and executive assessment and development for companies such as United Airlines, Kraft Foods, ITW, Grainger, and Aramark.

Prior to starting SLR Consulting 20 years ago, Ralsky served as chairman of management sciences at the Graduate School of Business at St. Bonaventure University, training director for Montgomery Ward, and corporate manager of management planning and development for PPG Industries.

Ralsky earned his Ph.D. in industrial-organizational psychology from Michigan State University and his master’s degree in labor industrial relations and bachelor’s degree in psychology from the University of Illinois. Ralsky is a member of the American Psychological Association and the Society for Industrial and Organizational Psychology.

Orion has deployed its technology in 4,796 facilities across North America. Since 2001, Orion has displaced more than 459 megawatts, saving customers more than $642 million and reducing indirect carbon dioxide emissions by 5.5 million tons.

Orion Energy Systems Inc. (Nasdaq: OESX) is a leading power technology enterprise that designs, manufactures and implements energy management systems, consisting primarily of high-performance, energy-efficient lighting platforms, intelligent wireless controls systems and direct renewable solar technology for commercial and industrial customers without compromise to their operations. For more information, visit http://www.oesx.com.

Media Contact

Linda Diedrich

Director Corporate Communications

(920) 482-1988

ljd@oes1.com