<img src="https://ml.globenewswire.com/Resource/Download/6471a37e-b78c-454b-bbbc-889a7e73e74d?size=2" nborder="0" align="left" hspace="5" vspace="5" title="orion_Logo.jpg" alt="Orion Energy Systems, Inc."/>MANITOWOC, Wis., Sept. 08, 2026 <a href="https://www.globenewswire.com" target="_blank">(GLOBE NEWSWIRE)</a> -- Orion Energy Systems, Inc. (NASDAQ: OESX) (<a href="https://www.globenewswire.com/Tracker?data=XbFKGXDOVl-TpJ__qNrMgFftBhmnj7RaaayTSRiNOHEojacWVhxuhvZGE74_PU5oVx2HyZo7h1lBY4RUblG2a9EGEHFOGb7p6TWNkEfH7kc=" rel="nofollow" target="_blank" title="Orion Lighting">Orion Lighting</a>), a provider of energy-efficient LED lighting, electric vehicle (EV) charging stations and maintenance services solutions, today announced an additional deployment of its MPHL2 LED Lighting solution for one of the world’s largest data-center operators. The multimillion-dollar order follows June’s announcement of Orion’s first multimillion-dollar deployment for the global hyperscaler. “Orion is extremely gratified to have earned this global leader’s confidence so quickly that it is tasking us at its second facility only three months after the first,” said Orion Chief Executive Officer Sally Washlow. “We look forward to continuing to expand our scope of work with this Fortune 20 global enterprise.” Orion’s higher efficiency products and proprietary supply chain, which minimize chokepoints, dwell times and market disruptions, were critical factors in the hyperscaler’s selection of Orion to provide its LED Lighting solutions, according to the customer. “Orion intends to make the MPHL2 the product of choice for much of today’s massive data-center build-out,” Ms. Washlow added. The customizable MPHL2 LED Lighting solution, manufactured in Orion’s home state of Wisconsin, is capable of delivering higher energy efficiency, resiliency and decarbonization in LED lighting to thousands of data centers in the current hyperscaler building boom. The high efficiency linear lighting fixture is designed and built to accommodate nearly every data center’s floor plan while reducing the energy usage for lighting over competitors’ offerings. About Orion Energy Systems Orion provides energy efficiency and clean tech solutions, including LED lighting and controls, electrical vehicle (EV) charging solutions, and maintenance services. Orion specializes in turnkey design-through-installation solutions for large national customers as well as projects through ESCO and distribution partners, with a commitment to helping customers achieve their business and environmental goals with healthy, safe, and sustainable solutions that reduce their carbon footprint and enhance business performance. Safe Harbor Statement   Certain matters discussed in this press release, are “forward-looking statements” intended to qualify for the safe harbor from liability established by the Private Securities Litigation Reform Act of 1995. These forward-looking statements may generally be identified as such because the context of such statements will include words such as “anticipate,” “believe,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “potential,” “predict,” “project,” “should,” “will,” “would” or words of similar import. Similarly, statements that describe our future plans, objectives or goals, including business relationships with government customers, are also forward-looking statements. Such forward-looking statements are subject to certain risks and uncertainties that could cause results to differ materially from those expected, including, but not limited to, the risks described in our filings with the Securities and Exchange Commission. Shareholders, potential investors and other readers are urged to consider risks and uncertainties carefully in evaluating the forward-looking statements and are cautioned not to place undue reliance on such forward-looking statements. The forward-looking statements made herein are made only as of the date of this press release and we undertake no obligation to publicly update any forward-looking statements, whether as a result of new information, future events or otherwise. More detailed information about factors that may affect our performance may be found in our filings with the Securities and Exchange Commission, which are available at <a href="https://www.globenewswire.com/Tracker?data=46UBsy4hD8k9uFGXQeSn5_D6w1xa54pBGHSJHrVdT82I74EH0X2SHKK89xyf_Tra2Uh1aXJsqq8YsoazdkpKEA==" rel="nofollow" target="_blank" title="">http://www.sec.gov</a> or at <a href="https://www.globenewswire.com/Tracker?data=46UBsy4hD8k9uFGXQeSn58AnRQRP9ThCz9tnUFRfRPDWAkhVHOr_d35ZBcMQ9aVFQJzJvaRKicEm4v3vK4i5AcAs1D2ws9f6PToTHKqMw3FEakh-RdaH_Eyctn4UvXhH" rel="nofollow" target="_blank" title="">http://investor.oriones.com/</a> in the Investor Relations section of our Website. Except as required by applicable law, we assume no obligation to update any forward-looking statements publicly or to update the reasons why actual results could differ materially from those anticipated in any forward-looking statements, even if new information becomes available in the future. Engage with Us X: <a href="https://www.globenewswire.com/Tracker?data=sX7HPYCQ7MX-Wk8zJ8ynfPU3NZAkv8wmNS1M6wANL6tibYQHmmT-SeCHDgZ3Ou0FJDzBSfJOTl57gKar1SjCBqWSouLzRq0pr9q7nXc9l3E=" rel="nofollow" target="_blank" title="@OrionLighting">@OrionLighting</a> and <a href="https://www.globenewswire.com/Tracker?data=sX7HPYCQ7MX-Wk8zJ8ynfL8wT1ExRSSykXzJsgXoY_qwCxZz4nN9p5AT-S4jE1O4Ill4ylkH1Pckr6gJRC0uUI9ooB1vT1gQOXiTMZbEd_g=" rel="nofollow" target="_blank" title="@OrionLightingIR">@OrionLightingIR</a> StockTwits: <a href="https://www.globenewswire.com/Tracker?data=mbQu9M7iFFH2BpBDdLJM9phgXT1LydSFfP51mK3dmlOeg4saeEj48x42sFopaCzQWm_L9bVQMOSOhm6I38BzqDjXltRbM3kxlF0Y6FeYSjE=" rel="nofollow" target="_blank" title="@OESX_IR">@OESX_IR</a>  <table style="border-collapse: collapse; width:100%; border-collapse:collapse ;"><tr><td style="vertical-align: bottom ; "> Investor Relations Contacts </td><td style="vertical-align: top ; "> </td></tr><tr><td style="vertical-align: middle; text-align: left; padding-left: 20.0px; vertical-align: top ; ">Per Brodin, CFO</td><td style="vertical-align: top ; ">Robert Ferri</td></tr><tr><td style="vertical-align: middle; text-align: left; padding-left: 20.0px; vertical-align: top ; ">Orion Energy Systems, Inc. <a href="mailto:pbrodin@oesx.com" rel="nofollow" target="_blank" title="pbrodin@oesx.com">pbrodin@oesx.com</a></td><td style="vertical-align: top ; ">Robert Ferri Partners (415) 575-1589 <a href="mailto:robert.ferri@robertferri.com" rel="nofollow" target="_blank" title="robert.ferri@robertferri.com">robert.ferri@robertferri.com</a></td></tr><tr><td style="vertical-align: top ; "> </td><td style="vertical-align: top ; "> </td></tr></table> <img alt="" src='https://ml.globenewswire.com/media/YzE1MzM4MTktYmVkNS00ZjY4LThmMWEtZWYyMjYxYzBkNzU3LTEwMTg3MDktMjAyNi0wOS0wOC1lbg==/tiny/Orion-Energy-Systems-Inc-.png' referrerpolicy='no-referrer-when-downgrade' />

Orion Announces Additional Multimillion-Dollar Data Center Engagement With Major Global Hyperscaler; Order Quickly Follows Inaugural Multimillion-Dollar Initiative

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