Orion Energy Systems, Inc. (OESX) Chief Executive Officer to Ring the NASDAQ Stock Market Closing Bell

| Source: Nasdaq, Inc.


 Neal Verfuerth, Chief Executive Officer of Orion Energy Systems, Inc.
 (OESX), will preside over the closing bell to celebrate the company's
 recent initial public offering on NASDAQ.

 NASDAQ MarketSite - 4 Times Square - 43rd & Broadway - Broadcast Studio

 Monday, December 31, 2007 at 4:00 p.m. ET

 Susan Marland; smarland@oriones.com

 NASDAQ MarketSite:
 Jolene Libretto; 646.441.5220; mobile - 347.219.9539

Feed Information:

The closing bell is available from 3:50 p.m. to 4:05 p.m. on uplink IA-6 C-band/transponder 17. The downlink frequency is 4040 Vertical; Audio 6.2-6.8. The feed can also be found on Waterfront fiber 1623. If you have any questions, please contact Jolene Libretto at (646) 441-5220.

Radio Feed:

An audio transmission of the closing bell is also available from 3:50 p.m. to 4:05 p.m. on uplink IA6 C band / transponder 24, downlink frequency 4180 horizontal. The feed can be found on Waterfront fiber 1623 as well.


A live Webcast of the NASDAQ Closing Bell will be available at: http://www.nasdaq.com/reference/marketsite_about.stm


To obtain a hi-resolution photograph of the Market Close, please go to http://www.nasdaq.com/reference/marketsite_events.stm and click on the market close of your choice.

About Orion Energy Systems, Inc. (OESX):

This Wisconsin company, with operations in Manitowoc and Plymouth, designs, manufactures and implements energy management systems consisting primarily of high-performance, energy efficient lighting systems, controls and related services. Our energy management systems deliver energy savings and efficiency gains to our commercial and industrial customers without compromising their quantity or quality of light.

For more information, please contact Daniel Waibel, Chief Financial Officer and Treasurer, at Orion Energy Systems 920-482-1918 or dwaibel@oriones.com.