Orion Energy Systems Appoints Vice President of Investor Relations


MANITOWOC, Wis., Nov. 1, 2010 - Orion Energy Systems Inc. (NYSE Amex:OESX), a power technology enterprise that designs, manufactures and deploys energy management solutions for the commercial and industrial sectors, announced today that Michael Harris, CPA, has joined the company as Vice President, Investor Relations.

Harris will oversee all investor relations operations for Orion and serve as a member of the management team.

Most recently, Harris was the founder and owner of Harris Business Solutions LLC since 2005, where he served as a consultant working with portfolio managers and research analysts at various money management firms. Harris completed a variety of engagements relating to the investment research process including in-depth "Red-Flag" reviews of public companies, advising on accounting-related topics, assistance with valuation-related issues and preparation of detailed financial models and forecasts. He also worked on special projects which required an advanced proficiency on accounting and financial analysis issues and conducted professional education seminars on various areas of his expertise.

Prior to being an independent consultant, Harris was a senior research analyst at Robert W. Baird where he covered primarily small-to-mid capitalization companies across numerous industries and sectors including general industrial, technology, alternative energy and special situations. He began his career in public accounting at KPMG Peat Marwick, followed by a regional firm, where he most recently was an accounting and audit manager. Harris is a licensed CPA and studied under the CFA program.

"As I've said many times, we believe our people and our partners are our greatest assets," said Neal Verfuerth, Chief Executive Officer of Orion Energy Systems, Inc. "Mike's prior experience as a sell-side equity analyst and consultant serving the buy side, combined with his strong accounting background, position him to help shape the message we send to analysts and investors. In addition, his significant experience analyzing the business models of a variety of public companies will serve as a valuable resource in assisting and executing on the strategic direction of Orion."

About Orion Energy Systems

Orion Energy Systems, Inc. (NYSE Amex:OESX) is a leading power technology enterprise that designs, manufactures and deploys energy management systems, consisting primarily of high-performance, energy efficient lighting systems and controls and related services, for commercial and industrial customers without compromising their quantity or quality of light. Since December 2001, Orion's technology has benefitted its customers and the environment by reducing its customers':

o Energy demand by 574,219 kilowatts, or 13.2 billion kilowatt-hours;

o Energy costs by more than $1.0 billion; and

o Indirect carbon dioxide emission by more than 8.8 million tons.

CONTACT:

Orion Energy Systems Inc.

Mike Harris,

Vice President - Investor Relations

(920)892-5412

mharris@oesx.com

Scott Jensen,

Chief Financial Officer

(920)892-5454

sjensen@oesx.com

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