Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in:

a.Registration Statement No. 333-254032 on Form S-3 dated March 09, 2021 pertaining to the registration of $150,000,000 of Debt Securities;

a.Registration Statement No. 333-254033 on Form S-3 dated March 09, 2021 pertaining to the registration of $35,000,000 8.125% Five-Year Senior Notes;

a.Registration Statement No. 333-255428 on Form S-3 dated April 22, 2021 pertaining to the universal shelf registration of $350,000,000 of securities;

a.Registration Statement No. 333-245144 on Form S-8 dated June 04, 2021 pertaining to the registration of 3,000,000 shares under the Company’s 2021 Long-Term Incentive Plan;

a.Registration Statement No. 333-256805 on Form S-8 dated June 04, 2021 pertaining to the registration of 1,250,000 shares under the Company’s 2021 Long-Term Incentive Plan;

a.Registration Statement No. 333-257262 on Form S-3 dated June 22, 2021 pertaining to the registration of $74,351,271 7.75% Series A Cumulative Perpetual Preferred Stock and $81,585,174 Common Stock;

a.Registration Statement No. 333-260854 on Form S-3 dated November 08, 2021 pertaining to the universal shelf registration of $500,000,000 of securities; and

a.Registration Statement No. 333-266238 on Form S-8 dated July 20, 2022 pertaining to the registration of 4,000,000 shares under the Company’s 2021 Long-Term Incentive Plan

of our reports dated March 15, 2024, relating to the consolidated financial statements of Babcock & Wilcox Enterprises, Inc. and the effectiveness of Babcock & Wilcox Enterprises Inc.’s internal control over financial reporting appearing in this Annual Report on Form 10-K for the year ended December 31, 2023.

/S/ DELOITTE & TOUCHE LLP

Cleveland, Ohio

March 15, 2024