 MANITOWOC, Wis., May 27, 2021 GLOBE NEWSWIRE -- Orion Energy Systems, Inc. NASDAQ: OESX Orion Lighting, a provider of energy-efficient LED lighting, controls and IoT systems, including turnkey project implementation, program management and system maintenance, will participate at the 18th Annual Craig-Hallum Institutional Investor Virtual Conference on Wednesday, June 2nd and will present at the LD Micro Invitational XI virtual conference on Tuesday, June 8th at 12:30 p.m. ET. 