IEC GUIDE 118:2024

IEC GUIDE 118 ®
Edition 2.0 2024-02
GUIDE
GUIDE
colour
inside
Preparation of basic and group energy efficiency publications including energy
efficiency aspects
Élaboration des publications fondamentales et de groupe sur l'efficacité
énergétique, y compris les aspects d'efficacité énergétique

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IEC GUIDE 118 ®
Edition 2.0 2024-02
GUIDE
GUIDE
colour
inside
Preparation of basic and group energy efficiency publications including energy

efficiency aspects
Élaboration des publications fondamentales et de groupe sur l'efficacité

énergétique, y compris les aspects d'efficacité énergétique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.015 ISBN 978-2-8322-5610-7

– 2 – IEC GUIDE 118:2024 © IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 General considerations . 10
4.1 Energy efficiency . 10
4.2 Systems approach . 11
4.3 Boundary . 12
4.3.1 Description . 12
4.3.2 Elements of the boundary description . 12
4.3.3 Inputs . 13
4.3.4 Outputs. 13
4.3.5 Driving parameters . 13
4.3.6 Energy efficiency related KPIs . 13
4.4 Wider boundary description – systems approach. 14
5 Energy efficiency publications . 15
5.1 General . 15
5.2 Basic EE publications . 15
5.3 Group EE publications . 15
5.4 Product publications . 16
5.5 References to other publications . 16
6 Energy efficiency aspects . 16
7 Assignment or change of horizontal EE functions . 18
8 Responsibilities of Advisory Committee on Energy Efficiency (ACEE) related to
horizontal EE publications . 20
9 Responsibilities of TCs with a horizontal EE function . 20
9.1 Informing relevant TCs . 20
9.2 Requests from product TC for new work. 20
10 Responsibilities of product TCs using horizontal EE publications . 21
10.1 Product TCs . 21
10.2 Application of horizontal EE publications . 21
10.3 New work item proposals to TCs with a horizontal EE function . 21
Annex A (informative) Boundary examples . 22
Annex B (informative) The extended product approach as a collaborative example
(reference IEC 61800-9-1) . 24
B.1 Sharing the TC responsibilities . 24
B.1.1 General . 24
B.1.2 Practical case . 24
B.1.3 Example of how different TCs can determine their role in a common
collaboration . 25
B.1.4 Example of how different TCs can share their responsibilities . 26
B.2 Practical example – a motor system and pump system collaboration . 27
Annex C (informative) Market barriers to energy efficiency . 30
Annex D (informative) Energy efficiency aspects and their inclusion in publications . 32
Bibliography . 34

Figure 1 – Boundary description and its elements . 13
Figure 2 – Wider boundary description . 14
Figure 3 – Flow chart showing the assignment process for a horizontal function
involving an advisory committee (AC) . 19
Figure A.1 – Boundary setting example: three boundaries for independent solution . 22
Figure A.2 – Boundary setting example: a boundary of a group . 22
Figure A.3 – A boundary of group with systematic solution . 23
Figure B.1 – Relation between different components at different levels . 25
Figure B.2 – Link between each box's corresponding TCs . 26
Figure B.3 – TCs responsibilities with EE key parameters at the different levels,
starting from the plant level and going down to individual components . 27
Figure B.4 – Interaction between the two semi-analytical models (SAMs) . 28
Figure B.5 – The semi-analytical models (SAMs) of the pump system (the extended
product) and the motor system . 29

Table 1 – Energy efficiency aspect categories and examples . 17
Table C.1 – Examples of generic market barriers to energy efficiency and possible
measures to overcome them from a standardization point of view . 30
Table D.1 – Energy efficiency aspects and examples of their inclusion in publications . 32

– 4 – IEC GUIDE 118:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PREPARATION OF BASIC AND GROUP ENERGY EFFICIENCY
PUBLICATIONS INCLUDING ENERGY EFFICIENCY ASPECTS

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, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the re
...