MANITOWOC, Wis., Apr 29, 2010 (GlobeNewswire via COMTEX News Network) -- Orion Energy Systems Inc. (NYSE Amex:OESX), a leading power technology enterprise, announced today that it will hold its quarterly and year-end results conference call for investors and analysts on Thursday, May 13, at 5:30 p.m. Eastern (4:30 p.m. Central). The earnings announcement is scheduled for release at 5 p.m. Eastern. Orion's Chief Executive Officer, Neal Verfuerth; President and Chief Operating Officer, James Kackley; and Chief Financial Officer, Scott Jensen, will host the conference call.

The details of the webcast and conference call are as follows:

Date: Thursday, May 13, 2010

Time: 5:30 p.m. Eastern

Access by conference call:

Domestic callers: Dial (877) 754-5294 International callers: Dial (678) 894-3013

Access by webcast:

Go to the Investor Relations section of Orion Energy Systems' website at http://investor.oriones.com/events.cfm for a live webcast link. To ensure a timely connection, it is recommended that users register at least 15 minutes prior to the scheduled webcast.

An audio replay of the earnings conference call will be available shortly after the call and will remain available through May 20, 2010. The replay can be accessed by dialing (800) 642-1687. International callers should dial (706) 645-9291. The replay pass code for all callers is 72390922.

About Orion Energy Systems Inc.

Orion Energy Systems Inc. (NYSE Amex: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 control systems and direct renewable solar technology for commercial and industrial customers without compromising their operations. For more information, visit www.oesx.com.

The Orion Energy Systems, Inc. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=4540

This news release was distributed by GlobeNewswire, www.globenewswire.com

SOURCE: Orion Energy Systems, Inc.

CONTACT:  Orion Energy Systems, Inc.
Scott Jensen, Chief Financial Officer
(920) 482-5454
FD
Victoria Sivrais
(312) 553-6715

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