Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated June 26, 2025, relating to the consolidated financial statements of Orion Energy Systems, Inc. (the “Company”) appearing in the Company’s Annual Report on Form 10-K for the year ended March 31, 2025.

/s/ BDO USA, P.C.

Milwaukee, Wisconsin

November 5, 2025

 

BDO USA, P.C., a Virginia professional corporation, is the U.S. member of BDO International Limited, a UK company limited by guarantee, and forms part of the international BDO network of independent member firms.

BDO is the brand name for the BDO network and for each of the BDO Member Firms.