MANITOWOC, Wis., Dec. 1, 2010 (GLOBE NEWSWIRE) -- Orion Energy Systems Inc. (NYSE Amex:OESX), a leading power technology enterprise, announced today that Scott Jensen, Chief Financial Officer, and Mike Harris, Vice President – Investor Relations, will present to institutional investors and analysts at the Lambert, Edwards & Associates 6th Annual SMID-West Investor Conference to be held on December 8, 2010 at The Palmer House Hilton Hotel in Chicago.

SMID-West 2010 is an invitation-only event that introduces professional investors from the buy-side and sell-side to the management teams of small- and mid-cap (SMID) companies in a one-on-one and small-group meeting format. For more information regarding the conference, or for institutional investors interested in meeting with Orion's management, please contact Abby Brant at (616) 233-0500 or abrant@lambert-edwards.com.

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. For more information, visit www.oesx.com .

The Orion Energy Systems, Inc. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=4540
CONTACT:  Orion Energy Systems, Inc.          Investor Relations Contact          Mike Harris, Vice President - Investor Relations          (920) 892-5412          mharris@oesx.com

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