EX-23.1 3 d25796_ex23-1.txt INDEPENDENT AUDITORS' CONSENT #1 Exhibit 23.1 INDEPENDENT AUDITORS' CONSENT We consent to the use in Post-Effective Amendment No. 3 to the Registration Statement on Form SB-2 (No. 333-04612) of our report dated March 23, 2001, relating to the consolidated financial statements of U.S. Energy Systems, Inc. and subsidiaries, which is contained in that Registration Statement. We also consent to the reference to our firm under the caption "Experts." /s/ Kostin, Ruffkess & Company, LLC West Hartford, Connecticut May 14, 2001