IEC GUIDE 118:2017

IEC GUIDE 118 ®
Edition 1.0 2017-03
GUIDE
colour
inside
Inclusion of energy efficiency aspects in electrotechnical publications

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IEC GUIDE 118 ®
Edition 1.0 2017-03
GUIDE
colour
inside
Inclusion of energy efficiency aspects in electrotechnical publications

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.015 ISBN 978-2-8322-4115-8

– 2 – IEC GUIDE 118:2017 © IEC 2017
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Standardization and energy efficiency . 7
4.1 General considerations . 7
4.2 The concept of energy efficiency . 8
4.3 Systems approach . 9
4.4 Contribution of standardization to energy efficiency . 9
5 Energy efficiency aspects in IEC publications . 10
5.1 General . 10
5.2 Energy efficiency improvement process . 10
5.3 Inclusion of energy efficiency aspects in IEC publications . 11
5.4 Energy efficiency publications . 13
Annex A (informative) Market barriers to energy efficiency . 14
Annex B (informative) Engineering approach to energy efficiency improvement . 16
B.1 General . 16
B.2 Boundary definition . 16
B.2.1 Principle . 16
B.2.2 Explanation . 16
B.3 Loss identification . 17
B.3.1 Principle . 17
B.3.2 Explanation . 17
B.4 Loss estimation . 17
B.4.1 Principle . 17
B.4.2 Explanation . 17
B.5 Loss evaluation . 18
B.5.1 Principle . 18
B.5.2 Explanation . 18
B.6 Energy efficiency improvement . 19
B.6.1 Principle . 19
B.6.2 Explanation . 19
Annex C (informative) Inclusion of energy efficiency aspects in IEC publications . 20
Bibliography . 23

Figure 1 – Key elements in energy efficiency definition . 9
Figure 2 – Iterative process of energy efficiency improvement . 11

Table 1 – Energy efficiency aspect categories and examples . 12
Table A.1 – Examples of generic market barriers to energy efficiency and possible
measures to overcome them from a standardization point of view . 15
Table C.1 – Energy efficiency aspects and examples of their inclusion in publications . 20

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INCLUSION OF ENERGY EFFICIENCY ASPECTS
IN ELECTROTECHNICAL PUBLICATIONS

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
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This first edition of IEC Guide 118 has been prepared, in accordance with ISO/IEC Directives,
Part 1, Annex A, by the IEC Advisory Committee on Energy Efficiency (ACEE). This is a non-
mandatory guide in accordance with SMB Decision 136/8.
The text of this IEC Guide is based on the following documents:
Four months' vote Report on voting
C/1979A/DV C/2002/RV
Full information on the voting for the approval of this IEC Guide can be found in the report on
voting indicated in the above table.

– 4 – IEC GUIDE 118:2017 © IEC 2017
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A bilingual version of this publication may be issued at a later date.

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INTRODUCTION
Energy efficiency is key to addressing the challenge to support energy policies while
preserving the environment.
Many energy efficient technologies and solutions are already available and cost-effective;
nevertheless, a variety of barriers inhibits the deployment of these technologies and impedes
harvesting their energy efficiency potential.
Standardization can play an important role to help overcome these barriers and to
disseminate and promote energy efficient technologies, solutions and services.
This Guide aims to give advice to technical committees on the way energy efficiency should
be considered and included in IEC publications.
IEC publications may deal exclusively with energy efficiency or may include clauses specific
to energy efficiency; however technical committees are encouraged to:
• consider energy efficiency in their standardization work;
• identify which aspects of energy efficiency are relevant for their standardization;
• use a structured approach when addressing energy efficiency;
• use a systems approach when addressing energy efficiency.
This Guide helps to fulfil IEC Energy Efficiency Policy by indicating how energy efficiency
can be included in electrotechnical publications.
In this Guide, the term “technical committees” also includes subcommittees and system
committees. The term “publication” includes “International Standard”, “Technical Report”,
“Technical Specification” and “Guide”. In addition, the term “product” includes “process”,
“service” and combinations thereof, commonly known as “systems”.
Technical committees dealing with subjects relating to energy efficiency for the whole, or for a
specific part of their activities, are invited by SMB Decision 136/8 to follow the provisions of
this Guide.
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White Paper: Coping with the Energy Challenge. The IEC’s role from 20
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