 MANITOWOC, Wis., May 21, 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 host a conference callwebcast to review its fiscal 2021 fourth quarter and year ended March 31 results, as well as its business outlook on Tuesday, June 1, 2021, at 4:30 p.m. ET. Orion plans to release its results following the markets close the same day. 