Recognized as an American National Standard (ANSI)
IEEE Std 739-1995
(Revision of IEEE Std 739-1984)
IEEE Recommended Practice for Energy
Management in Industrial and
Commercial Facilities
Sponsor
Energy Systems Committee
of the
Industrial and Commercial Power Systems Department
of the
IEEE Industry Applications Society
Approved 12 December 1995
IEEE Standards Board
Approved 16 July 1996
American National Standards Institute
Abstract: This recommended practice serves as an engineering guide for use in electrical design for
energy conservation. It provides a standard design practice to assist engineers in evaluating electrical
options from an energy standpoint. It establishes engineering techniques and procedures to allow efficiency
optimization in the design and operation of an electrical system considering all aspects (safety, costs,
environment, those occupying the facility, management needs, etc.).
Keywords: break-even analysis; cogeneration; demand control; electrical energy; electric rate structure;
energy audit; energy balance; energy conservation program; energy monitoring; energy-rate method;
energy savings; heating, ventilating, and air conditioning (HVAC); levelized cost analysis; life cycle costing
(LCC); lighting; load management; load type; loss evaluation; marginal cost analysis; metering; power bill;
process energy; process modification; product energy rate; space conditioning; utility rate structure
Grateful acknowledgment is made to the following organizations for having granted permission to reprint material in
this document as listed below:
ABB Power T&D Company, Inc., Bland, VA for annex Annex 5I.
Acme Electric Co., Lumberton, NC, for data used in 5.4.3, including tables 5-19, 5-20, 5-21, and 5-22.
American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE), Atlanta, GA, for table 5-6
from the 1992 ASHRAE Handbook—Systems and Equipment; and for table 5-18 from the 1993 ASHRAE
Handbook—Fundamentals.
Butterworth Heinemann Publishers, Oxford, England, for data used in