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                                                                    EXHIBIT 23.1



INDEPENDENT AUDITORS' CONSENT

       We consent to the incorporation by reference in Registration Statement
Nos. 33-54398, 33-78348, 333-07515, 333-43547, 333-56697, 333-32118 and
333-42698 on Form S-8 and Nos. 333-60925 and 333-96369 on Form S-3 of Metretek
Technologies, Inc. (f.k.a. Marcum Natural Gas Services, Inc.) of our report
dated March 21, 2001 appearing in this Annual Report on Form 10-KSB of Metretek
Technologies, Inc. for the year ended December 31, 2000.


/s/ Deloitte & Touche LLP

DELOITTE & TOUCHE LLP

Denver, Colorado
March 21, 2001



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