ISO/TS 50011:2023
(Main)Energy management systems ― Assessing energy management using ISO 50001:2018
Energy management systems ― Assessing energy management using ISO 50001:2018
This document gives guidance based on ISO 50001:2018 to measure the status of energy management in an organization. The measurement results are described by using three scores: structure management score (SMS), operation management score (OMS) and target achievement score (TAS). This document presents methodologies on how the basic and advanced scores can be calculated. This document is applicable to organizations that are considering implementation, are implementing or have implemented an ISO 50001:2018 energy management system (EnMS) or any other system for energy management. It can be used to identify areas for improvement or to identify areas in which improvement has taken place. This document is applicable to any organization or association (e.g. national energy authorities, energy intensive industries implementing advanced energy management to small and medium enterprises) regardless of its type, size or complexity, etc. This document does not apply to countries, regions or cities. This document does not provide an interpretation of or modify the requirements of ISO 50001:2018.
Système de management de l'énergie ― Évaluation du management de l’énergie au moyen de l’ISO 50001:2018
General Information
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Standards Content (Sample)
TECHNICAL ISO/TS
SPECIFICATION 50011
First edition
2023-04
Energy management systems ―
Assessing energy management using
ISO 50001:2018
Système de management de l'énergie ― Évaluation du management
de l’énergie au moyen de l’ISO 50001:2018
Reference number
ISO/TS 50011:2023(E)
© ISO 2023
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ISO/TS 50011:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
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ISO/TS 50011:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 1
3.1 Terms and definitions . 1
3.2 Abbreviated terms . 2
4 Objectives and boundary for the EMPS measurement . 3
4.1 Understanding the objective of EMPS measurement . 3
4.2 Determination of boundary for EMPS measurement . 3
5 Overview of measurement of EMPS .3
5.1 Structure of the EMPS . 3
5.2 Presentation of status . 4
6 EMPS . 4
6.1 General . 4
6.2 SMS . 4
6.3 OMS . 5
6.4 TAS . 5
7 Method for determination of SMS . 5
7.1 General . 5
7.2 Basic items for SMS . 5
7.3 Scoring method for the basic SMS items . 11
8 Method for determination of OMS .12
8.1 General .12
8.2 Basic items for OMS .12
8.3 Scoring method for basic OMS items . 17
9 Method of determination of TAS .18
9.1 General . 18
9.2 Basic items for TAS . 18
9.3 Scoring method for basic TAS items . 19
10 Advanced scoring .20
10.1 General . 20
10.2 Scoring guidance for advanced items . 21
11 Update the EMPS .21
Annex A (informative) Advanced items for SMS .22
Annex B (informative) Advanced items for OMS .24
Annex C (informative) Advanced items for TAS.26
Bibliography .27
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ISO/TS 50011:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 301, Energy management and energy
savings.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
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ISO/TS 50011:2023(E)
Introduction
0.1 Overview
This guidance document provides a method for determining the status of an organization’s energy
management using an energy management performance score (EMPS). Measuring energy management
and energy performance is expected to guide organizations to more effective energy management.
This document can be used by organizations which have implemented or are implementing an energy
management system (EnMS) based on ISO 50001:2018, or any other system of energy management.
Organizations which have not implemented an EnMS may use this document for determining their
scoring status of structure, operation and/or energy performance. The EMPS can be used by:
— an organization to compare the status of its EnMS at two different points in time to determine
progress;
— a multi-site implementation of ISO 50001:2018, to compare the status of the EnMS of two different
sites;
— two different organizations for benchmarking purposes.
This document defines evaluation items and does not specify the order in which each evaluated item is
implemented. This document does not provide guidance on the implementation of ISO 50001:2018. For
information on implementing ISO 50001:2018, see ISO 50004 or ISO 50005.
The EMPS is the result of three evaluated elements, as shown in Figure 1:
— structure management score (SMS);
— operation management score (OMS);
— target achievement score (TAS).
Figure 1 — Outline of the calculation method of the EMPS
The requirements of ISO 50001:2018 are represented by the basic items shown in Tables 1, 3 and 5. An
overview of the three components in the EMPS are shown in Figure 2.
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ISO/TS 50011:2023(E)
Figure 2 — Overview of SMS, OMS and TAS criteria
The results for the SMS, OMS and TAS are determined at four levels of score A, B, C and D. The highest
score is A and the lowest score is D. In each element, basic items (see Tables 1, 3 and 5) and advanced
items (see Tables A.1, B.1 and C.1) are addressed. The basic items and advanced items are scored
separately. Although the advanced items are not included in the requirements of ISO 50001:2018, they
provide additional opportunities for improving the organization’s energy management structure and
operations.
To assist organizations with applying this document, it is strongly recommended that capital letters
(A, B, C, D) are used for the basic categories of structure (SMS), operation (OMS) and performance
(TAS). The capital letters are compared across time for internal use but can be compared with other
interested parties. To facilitate the comparison, the items in Tables 1, 3 and 5 cannot be modified. The
use of colours also can help represent the status of the EnMS.
It is strongly recommended that the advanced items are represented by lower case letters (a, b, c, d).
The same colour is used for the components (i.e. for both basic and advanced in each category the same
colour is used) to assist with the visual representation. Since each organization applying this document
can have different needs and objectives, the advanced items can be modified by the organization. The
organization retains documented information on the advanced items to ensure transparency and
allow for comparisons within the organization over time. That means that Tables A.1, B.1 and C.1 are a
starting part for use by the organization. The organization can add or remove items.
The structural elements of an EnMS conforming to ISO 50001:2018 are used as the criteria for SMS
scoring. These criteria include, for example, context of the organization, energy policy, leadership
commitment, internal audit and management review.
The operational elements of an EnMS conforming to ISO 50001:2018 are used as the criteria for OMS
scoring. These criteria include, for example, measurement and management of energy performance,
operation of facilities/equipment associated with significant energy uses (SEUs), design and
procurement related to SEUs and energy supply, and management of actions to improve energy
performance.
The TAS is evaluated based on achievement of energy target(s) established by the organization. Energy
target(s) can be related to energy performance improvement including energy savings. Energy savings
can be determined by the methods described in ISO 50047:2016, ISO 17741:2016 or ISO 17743:2016.
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ISO/TS 50011:2023(E)
Energy performance improvement can be evaluated by the methods described in ISO 50006. An energy
target can also be established based on benchmarks defined by the government or industry groups.
NOTE 2 The requirements for energy benchmarks defined by the government or industry groups are often
based on absolute or specific energy consumption, without normalization or consideration of relevant variables.
These do not always meet the requirements for evaluating energy performance improvement described in
ISO 50001:2018.
0.2 Benefits
The benefits associated with use of this document are:
— for organizations:
— a clear indication of areas for improvement in energy management;
— a robust and holistic indicator(s) of energy performance;
— alignment with ISO 50001:2018;
— for external authorities or organizations:
— a robust and holistic indicator(s) of energy performance;
— identification of best practices in different types of organizations;
— promotion of ISO 50001:2018 in existing and new organizations.
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TECHNICAL SPECIFICATION ISO/TS 50011:2023(E)
Energy management systems ― Assessing energy
management using ISO 50001:2018
1 Scope
This document gives guidance based on ISO 50001:2018 to measure the status of energy management in
an organization. The measurement results are described by using three scores: structure management
score (SMS), operation management score (OMS) and target achievement score (TAS). This document
presents methodologies on how the basic and advanced scores can be calculated.
This document is applicable to organizations that are considering implementation, are implementing
or have implemented an ISO 50001:2018 energy management system (EnMS) or any other system for
energy management. It can be used to identify areas for improvement or to identify areas in which
improvement has taken place.
This document is applicable to any organization or association (e.g. national energy authorities, energy
intensive industries implementing advanced energy management to small and medium enterprises)
regardless of its type, size or complexity, etc. This document does not apply to countries, regions or
cities.
This document does not provide an interpretation of or modify the requirements of ISO 50001:2018.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 50001:2018, Energy management systems — Requirements with guidance for use
3 Terms, definitions and abbreviated terms
For the purposes of this document, the terms and definitions given in ISO 50001:2018 and the following
apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1 Terms and definitions
3.1.1
energy management performance score
EMPS
evaluation result of quantifying the status of energy management
Note 1 to entry: The status of energy management is a combination of the structure management score (3.1.2),
operation management score (3.1.3) and target achievement score (3.1.4).
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ISO/TS 50011:2023(E)
3.1.2
structure management score
SMS
evaluation result of quantifying the status of structural elements of energy management
Note 1 to entry: This evaluation result is determined at four levels (A, B, C, D) for basic scores and (a, b, c, d) for
advanced scores.
3.1.3
operation management score
OMS
evaluation result of quantifying the status of operational elements of energy management
Note 1 to entry: This evaluation result is determined at four levels (A, B, C, D) for basic scores and (a, b, c, d) for
advanced scores.
3.1.4
target achievement score
TAS
evaluation result of quantifying the achievement of energy target(s)
Note 1 to entry: The energy target(s) is established by the organization.
Note 2 to entry: This evaluation result is determined at four levels (A, B, C, D) for basic scores and (a, b, c, d) for
advanced scores.
3.1.5
significant energy use
SEU
energy use accounting for substantial energy consumption and/or offering considerable potential for
energy performance improvement
[SOURCE: ISO 50001:2018, 3.5.6, modified — Notes 1 and 2 to entry deleted.]
3.2 Abbreviated terms
EMPS energy management performance score
EnB energy baseline
EnMS energy management system
EnPI energy performance indicator
EPIA energy performance improvement action
OMS operation management score
SEU significant energy use
SMS structure management score
TAS target achievement score
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ISO/TS 50011:2023(E)
4 Objectives and boundary for the EMPS measurement
4.1 Understanding the objective of EMPS measurement
The main objective of using the EMPS is to measure and monitor the status of energy management in an
organization to determine its progress. Additional objectives can be:
a) to help to monitor the organization’s activities for improving energy performance;
b) to be part of green initiative(s) of the organization based on the expectations of its customers;
c) to increase the organization’s competitiveness;
d) benchmarking with different parts of the organization to identify opportunities for improvement
in their energy performance;
e) benchmarking the organization’s performance with other members of an industry association.
4.2 Determination of boundary for EMPS measurement
The boundaries for the EMPS should be within the energy management activities of the organization
and the EnMS. The organization should determine and document the boundary appropriate to the
measurement of the EMPS. Where an organization has already established an ISO 50001:2018 EnMS,
the boundary for the EMPS measurement can be the same as the boundary of its ISO 50001:2018 EnMS.
In determining the boundary, the following should be considered:
— objective of the EMPS measurement;
— boundary of the EnMS;
— energy types used by the organization.
The EMPS is typically applied to all the energy management activities operated by the organization, to
minimize the risk of choosing higher performing parts of the scope of the system. However, it can also
be applied to distinct parts within an organization, to a multi-site organization or to more than one
organization.
5 Overview of measurement of EMPS
5.1 Structure of the EMPS
The EMPS is a combination of basic scores and advanced scores. For the basic score, the SMS, OMS and
TAS are each evaluated using four levels of scoring defined as A, B, C or D, where A is the highest and
D is the lowest possible level. Levels are used to summarize the overall condition of the EnMS. These
are more useful than the underlying numeric score because the evaluation criteria consider qualitative
characteristics of the EnMS. For example, when each basic level is “A” for the SMS, OMS and TAS, the
combined score for the basic items of the EMPS is “AAA”. Similarly, when each advanced level is “b” the
combined score for the advanced items of the EMPS is “bbb”, resulting in a combined EMPS of “AbAbAb”.
Criteria for the basic SMS are selected from requirements related to the structure of an ISO 50001:2018
EnMS. The organization should maintain documented information on the application of this document,
if communicating with interested parties.
Criteria for the basic OMS are selected from requirements related to the effective operation,
maintenance and improvement of energy performance of an ISO 50001:2018 EnMS.
The energy targets are defined by the organization considering its current energy performance and
potential for energy performance improvement. When the organization defines an energy target(s) in
terms of energy savings, the methods described in ISO 50047, ISO 17741 or ISO 17743 can be used. When
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ISO/TS 50011:2023(E)
the organization defines an energy target(s) based on an EnPI, the methods described in ISO 50006 can
be used.
5.2 Presentation of status
The results of evaluating the basic items for the SMS, OMS and TAS can be presented by using a
visual representation such as a spider diagram. This allows for a visual presentation of the status of
energy management at a point in time. This type of visual representation also allows organizations to
demonstrate progress over time (see Figure 3).
Additional information is available in Annex A.
Key
Blue triangle is period 1 showing initial status (CCD)
Green triangle is period 2 showing improvement in the SMS and TAS (BCC)
Orange triangle is period 3 showing improvement in the SMS, OMS and TAS (ABB)
NOTE This figure only shows the basic scores for the SMS, OMS and TAS.
Figure 3 — Example spider diagram
6 EMPS
6.1 General
The status of energy management of an organization is indicated by its EMPS. An overview of the EMPS
and the method for its evaluation are shown in this clause.
6.2 SMS
The SMS for an organization is determined by evaluating structural elements of its energy management.
The basic SMS is based on criteria selected from structural elements of ISO 50001:2018. The criteria for
advanced items for the SMS are given in Annex A.
The method for determining the basic SMS is described in Clause 7.
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ISO/TS 50011:2023(E)
6.3 OMS
The OMS for an organization is determined by evaluating operational elements of its energy
management. The basic OMS is based on criteria selected from operational elements of ISO 50001:2018.
The criteria for advanced items for the OMS are given in Annex B.
The method for determining the basic OMS is described in Clause 8.
6.4 TAS
The TAS for an organization is determined by evaluating the degree of achievement of its energy
target(s). The TAS is based on the energy target(s) established by the organization. The criteria for
advanced items for the TAS are given in Annex C.
The period of time to achieve an energy target(s) can range from a short period of time (e.g. week,
month) to multiple years. When an organization establishes an energy target(s) over multiple years,
it should set annual milestones in its action plans and evaluate achievement relative to those annual
milestones.
The method for determining the basic TAS is described in Clause 9.
7 Method for determination of SMS
7.1 General
The SMS should be determined by the following two criteria:
— Basic items: items for the structural elements of energy management based on the requirements of
ISO 50001:2018.
— Advanced items: items for the structural element of energy management for achieving a higher level
of improvement in energy performance as compared with basic items.
Organizations should evaluate the structure of their energy management as described in 7.2 and
Annex A.
7.2 Basic items for SMS
Basic items for the SMS as described in Table 1 are based on the structural requirements in
ISO 50001:2018. The criteria are evaluated and, if the organization has met the criterion, a point value
of one (1) is assigned. If the criterion is not met, then a point value of zero (0) is assigned. No partial
values are assigned (e.g. 0,5). After evaluating the criteria in Table 1, the basic SMS is determined by
using the method described in 7.3.
Table 1 — Basic items for SMS
Clause
Item
number in Evaluation criteria Possible
identification
ISO 50001: (description of the reference state) points
no.
2018
External issues that are relevant to the organization’s purpose
and that affect its ability to achieve the intended outcome(s) of
1
its energy management and to improve its energy performance
are determined.
SB-1 4.1
Internal issues that are relevant to the organization’s purpose
and that affect its ability to achieve the intended outcome(s) of
1
its energy management and to improve its energy performance
are determined.
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ISO/TS 50011:2023(E)
TTaabblle 1 e 1 ((ccoonnttiinnueuedd))
Clause
Item
number in Evaluation criteria Possible
identification
ISO 50001: (description of the reference state) points
no.
2018
The interested parties that are relevant to energy performance
1
and its energy management are determined.
The relevant energy requirements of the identified interested
1
parties are determined.
The identified needs and expectations related to energy, which
the organization addresses through its energy management, are 1
determined.
SB-2 4.2
The applicable legal requirements and other requirements are
1
accessible.
The applicable legal requirements and other requirements are
1
taken into account and reviewed at defined intervals.
The organization has determined how the applicable legal
requirements and other requirements apply to its energy 1
efficiency, energy use and energy consumption.
The boundaries and applicability of energy management are
1
determined to establish the organization’s scope.
In determining the energy management scope, the external and
1
internal issues of ISO 50001:2018, 4.1, are considered.
In determining the energy management scope, the requirements
1
of ISO 50001:2018, 4.2, are considered.
SB-3 4.3, 5.1 a)
The authority to control its energy efficiency, energy use and
energy consumption, within the scope and boundaries, is 1
ensured.
The EnMS scope and boundaries are maintained as documented
1
information.
No energy type within the scope and boundaries is excluded. 1
Energy management, including the processes needed and their
1
interactions, is established and implemented.
Energy management, including the processes needed and their
SB-4 4.4 1
interactions, is maintained.
Energy management, including the processes needed and their
1
interactions, is continually improved.
The energy policy, objectives and
...
© ISO 2022 – All rights reserved
ISO/DTS 50011:2022(E)
First edition
Date: 09 OCT 2022-11-11
ISO/TC 301/WG 1
Secretariat: ANSI
Energy management system ―systems — Assessing energy
management using ISO 50001:2018
---------------------- Page: 1 ----------------------
ISO/DTS 50011:2022(E)
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this
publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical,
including photocopying, or posting on the internet or an intranet, without prior written permission. Permission
can be requested from either ISO at the address below or ISO’s member body in the country of the requester.
ISO Copyright Office
CP 401 • CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland.
ii © ISO 2022 – All rights reserved
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ISO/DTS 50011:2022(E)
Contents
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 1
3.1 Terms and definitions . 2
3.2 Abbreviated terms . 2
4 Objectives and boundary for the EMPS measurement . 3
4.1 Understanding the objective of EMPS measurement . 3
4.2 Determination of boundary for EMPS measurement . 3
5 Overview of measurement of EMPS . 3
5.1 Structure of the EMPS . 3
5.2 Presentation of status . 4
6 EMPS . 5
6.1 General . 5
6.2 SMS . 5
6.3 OMS . 6
6.4 TAS . 6
7 Method for determination of SMS . 6
7.1 General . 6
7.2 Basic items for SMS . 6
7.3 Scoring method for the basic SMS items . 13
8 Method for determination of OMS . 14
8.1 General . 14
8.2 Basic items for OMS. 14
8.3 Scoring method for basic OMS items . 21
9 Method of determination of TAS . 22
9.1 General . 22
9.2 Basic items for TAS . 22
9.3 Scoring method for basic TAS items . 23
10 Advanced scoring . 24
10.1 General . 24
10.2 Scoring guidance for advanced items . 25
11 Update the EMPS . 26
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ISO/DTS 50011:2022(E)
Annex A (informative) Advanced items for SMS . 27
Annex B (informative) Advanced items for OMS . 30
Annex C (informative) Advanced items for TAS . 33
Bibliography .34
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ISO/DTS 50011:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national
standards bodies (ISO member bodies). The work of preparing International Standards is normally
carried out through ISO technical committees. Each member body interested in a subject for which a
technical committee has been established has the right to be represented on that committee.
International organizations, governmental and non-governmental, in liaison with ISO, also take part
in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all
matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for
the different types of ISO documents should be noted. This document was drafted in accordance with
the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject
of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details
of any patent rights identified during the development of the document will be in the Introduction
and/or on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation onof the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see the
following URL: www.iso.org/iso/foreword.html.
Field Code Changed
This document was prepared by Technical Committee ISO/TC 301, Energy management and energy
savings.
This is the First edition of this document.
Any feedback or questions on this document should be directed to the user’s national standards body.
A complete listing of these bodies can be found at www.iso.org/members.html.
Field Code Changed
© ISO 2022 – All rights reserved v
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ISO/DTS 50011:2022(E)
Introduction
0.1 Overview
This guidance document provides a method for determining the status of an organization’s energy
management using an Energy Management Performance Scoreenergy management performance
score (EMPS). Measuring energy management and energy performance is expected to guide
organizations to more effective energy management.
This document can be used by organizations which have implemented or are implementing an energy
management system (EnMS) based on ISO 50001:2018, or any other system of energy management.
Organizations which have not implemented an EnMS may use this document for determining their
scoring status of structure, operation and/or energy performance. The EMPS can be used by:
— an organization to compare the status of its EnMS at two different points in time to determine
progress;
— a multi-site implementation of ISO 50001:2018, to compare the status of the EnMS of two
different sites; or
— two different organizations for benchmarking purposes.
This document defines evaluation items and does not specify the order in which each evaluated item
is implemented. This document does not provide guidance on the implementation of
ISO 50001:2018. For information on implementing ISO 50001:2018, see ISO 50004 or ISO 50005.
NOTE 1 This document is applicable to any organization regardless of its type, size, or complexity (e.g.,
energy intensive industries implementing advanced energy management to small and medium enterprises).
The Energy Management Performance Score (EMPS) is the result of three evaluated elements:
Structure Management Score , as shown in Figure 1:
— structure management score (SMS), Operation Management Score);
— operation management score (OMS) and Target Achievement Score);
— target achievement score (TAS) as shown in . ).
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ISO/DTS 50011:2022(E)
Figure 1 — Outline of the calculation method of the EMPS
The requirements of ISO 50001:2018 are represented by the basic items shown in , , .Tables 1, 3
and 5. An overview of the three components in the EMPS are shown in Figure 2.
Figure 2 — Overview of SMS, OMS and TAS criteria
The results for the SMS, OMS and TAS are determined at four levels of score A, B, C, and D. A is theThe
highest score is A and D the lowest score is D. In each element, basic items (, , )(see Tables 1, 3 and 5)
and advanced items (, , )(see Tables A.1, B.1 and C.1) are addressed. The basic items and advanced
items are scored separately. Although, the advanced items are not included in the requirements of
ISO 50001:2018, they provide additional opportunities for improving the organization’s energy
management structure and operations.
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ISO/DTS 50011:2022(E)
Advanced item score
Basic item score
EMPS = AaAaAa
1. Structure Management Score（SMS)
Structure of Energy Management System
(Management System, Planning for energy improvement, etc.)
2. Operation Management Score（OMS)
Operation of Energy Management System
(Implementation of the planning, Operation of SEUs,
Implementation of EPIAs, Monitoring EnPIs, etc. )
3. Target Achievement Score（TAS）
Energy performance improvement effect
(Comparison between actual value and target of EnPIs ）
Figure Outline of the calculation method of the EMPS
To assist organization’s organizations with applying this standarddocument, it is strongly
recommended that capital letters (A, B, C, D) are used for the basic categories of structure (SMS),
operation (OMS), and performance (TAS). The capital letters are compared across time for internal
use but can be compared with other interested parties. To facilitate the comparison, the items in
Tables 1, 3 and 5 cannot be modified. The use of colours also can help represent the status of the
EnMS.
It is strongly recommended that the advanced items are represented by lower case letters (a, b, c, d).
The same colour is used for the components (i.e. for both basic and advanced in each category the
same colour is used) to assist with the visual representation. Since each organization applying ISO
50011this document can have different needs and objectives, the advanced items can be modified by
the organization. The organization retains documented information on the advanced items to ensure
transparency and allow for comparisons within the organization over time. That means that
Tables A.1, B.1 and C.1 are a starting part for use by the organization. The organization can add or
remove items.
viii © ISO 2022 – All rights reserved
---------------------- Page: 8 ----------------------
ISO/DTS 50011:2022(E)
Are the
processes Do we have the
providing the
item/rule in place?
intended results?
(Intent)
(effectiveness SMS
TAS
and performance
OMS
Are we implementing
our processes?
(Implementation)
Figure Overview of SMS, OMS, TAS criteria
The structural elements of an EnMS conforming to ISO 50001:2018 are used as the criteria for SMS
scoring. These criteria include, for example, context of the organization, energy policy, leadership
commitment, internal audit, and management review.
The operational elements of an EnMS conforming to ISO 50001:2018 are used as the criteria for OMS
scoring. These criteria include, for example, measurement and management of energy performance,
operation of facilities/equipment associated with significant energy uses (SEUs), design and
procurement related to SEUs and energy supply, and management of actions to improve energy
performance.
The TAS is evaluated based on achievement of energy target(s) established by the organization.
Energy target(s) can be related to energy performance improvement including energy savings.
Energy savings can be determined by the methods described in ISO 50047:2016, ISO 17741:2016, or
ISO 17743:2016. Energy performance improvement can be evaluated by the methods described in.
ISO 50006. An energy target can also be established based on benchmarks defined by the government
or industry groups.
NOTE 2 The requirements for energy benchmarks defined by the government or industry groups are often
based on absolute or specific energy consumption, without normalization or consideration of relevant
variables. These do not always meet the requirements for evaluating energy performance improvement
described in ISO 50001:2018.
0.2 Benefits
The benefits associated with use of this document are:
— Forfor organizations:
— Cleara clear indication of areas for improvement in energy management;
© ISO 2022 – All rights reserved ix
---------------------- Page: 9 ----------------------
ISO/DTS 50011:2022(E)
— Robusta robust and holistic indicator(s) of energy performance;
— Alignmentalignment with ISO 50001:2018.;
— Forfor external authorities, or organizations:
— Robusta robust and holistic indicator(s) of energy performance;
— Identificationidentification of best practices in different types of organizations;
— Promotionpromotion of ISO 50001:2018 in existing and new organizations.
x © ISO 2022 – All rights reserved
---------------------- Page: 10 ----------------------
DRAFT TECHNICAL SPECIFICATION ISO/DTS 50011:2022(E)
Energy management systemsystems — Assessing energy
management using ISO 50001:2018
1 Scope
This document providesgives guidance based on ISO 50001:2018, to measure the status of energy
management in an organization. The measurement results are described by using three scores:
Structure Management Scorestructure management score (SMS), Operation Management
Scoreoperation management score (OMS) and Target Achievement Scoretarget achievement score
(TAS). This document presents methodologies on how the basic and advanced scores can be
calculated.
This document is applicable to organizations that are considering implementation, are implementing,
or have implemented an ISO 50001:2018 energy management system (EnMS) or any other system
for energy management. It can be used to identify areas for improvement or to identify areas in which
improvement has taken place.
This document is applicable to anany organization, or association (e.g. national energy authorities,
energy intensive industries implementing advanced energy management to small and medium
enterprises) regardless of its type, size, or complexity, etc. This document as presented does not
apply to countries, regions, or cities.
This document does not provide an interpretation of or modify the requirements of ISO 50001:2018.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
ISO 50001:2018, Energy management systems — Requirements with guidance for use
3 Terms, definitions, and abbreviationsabbreviated terms
For the purposes of this document, the following terms and definitions / terms and definitions given
in ISO 50001:2018 Energy management systems — Requirements with guidance for use and the
following apply.
ISO and IEC maintain terminologicalterminology databases for use in standardization at the
following addresses:
IEC Electropedia: available at — ISO Online browsing platform: available at
https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
1 © ISO 2022 – All rights reserved
---------------------- Page: 11 ----------------------
3.1 Terms, and definitions and abbreviations
3.1.1
energy management performance score
EMPS
evaluation result of quantifying the status of energy management
Note 1 to entry: The status of energy management is a combination of SMS , OMS ,the structure management
score (3.1.2), operation management score (3.1.3) and TAS .target achievement score (3.1.4).
3.1.2
structure management score
SMS
evaluation result of quantifying the status of structural elements of energy management
Note 1 to entry: This evaluation result is determined at four levels (A, B, C, D) for basic scores and (a, b, c, d) for
advanced scores.
3.1.3
operation management score
OMS
evaluation result of quantifying the status of operational elements of energy management
Note 1 to entry: This evaluation result is determined at four levels (A, B, C, D) for basic scores and (a, b, c, d) for
advanced scores.
3.1.4
target achievement score
TAS
evaluation result of quantifying the achievement of energy target(s)
Note 1 to entry: The energy target(s) is established by the organization.
Note 2 to entry: This evaluation result is determined at four levels (A, B, C, D) for basic scores and (a, b, c, d) for
advanced scores.
3.1.5
significant energy use
SEU
energy use accounting for substantial energy consumption and/or offering considerable potential for
energy performance improvement
[SOURCE: ISO 50001:2018, 3.5.6, modified, Note — Notes 1 and Note 2 areto entry deleted.]
3.2 Abbreviated terms
EMPS energy management performance score
EnB energy baseline
EnMS energy management system
EnPI energy performance indicator
---------------------- Page: 12 ----------------------
OMS operation management score
SEU significant energy use
SMS structure management score
TAS target achievement score
4 Objectives and boundary for the EMPS measurement
4.1 Understanding the objective of EMPS measurement
The main objective of using the EMPS is to measure and monitor the status of energy management in
an organization to determine its progress. Additional objectives can be:
a) to help to monitor the organization’s activities for improving energy performance;
b) to be a part of green initiative(s) of the organization based on the expectations of its customers;
c) to increase the organization’s competitiveness;
d) benchmarking with different parts of the organization to identify opportunities for improvement
in their energy performance;
e) benchmarking the organization’s performance with other members of an industry association.
4.2 Determination of boundary for EMPS measurement
The boundaries for the EMPS should be within the energy management activities of the organization
and the EnMS. The organization should determine and document the boundary appropriate to the
measurement of the EMPS. Where an organization has already established an ISO 50001:2018 EnMS,
the boundary for the EMPS measurement can be the same as the boundary of its ISO 50001:2018
EnMS.
In determining the boundary, the following should be considered:
— objective of the EMPS measurement;
— boundary of the EnMS;
— energy types used by the organization.
The EMPS is typically applied to all the energy management activities operated by the organization,
to minimiseminimize the risk of choosing higher performing parts of the scope of the system.
However, it can also be applied to distinct parts within an organization, to a multi-site organization
or to more than one organization.
5 Overview of measurement of EMPS
5.1 Structure of the EMPS
The EMPS is a combination of basic scores and advanced scores. For the basic score, the SMS, OMS
and TAS are each evaluated using four levels of scoring defined as A, B, C or D, where A is the highest
---------------------- Page: 13 ----------------------
and D is the lowest possible level. Levels are used to summarize the overall condition of the EnMS.
These are more useful than the underlying numeric score because the evaluation criteria consider
qualitative characteristics of the EnMS. For example, when each basic level is “A” for the SMS, OMS
and TAS, the combined score for the basic items of the EMPS is “AAA”. Similarly, when each advanced
level is “b” the combined score for the advanced items of the EMPS is “bbb”, resulting in a combined
EMPS of “AbAbAb”.
Criteria for the basic SMS are selected from requirements related to the structure of an
ISO 50001:2018 EnMS. The organization should maintain documented information on the
application of ISO 50011this document, if communicating with interested parties.
Criteria for the basic OMS are selected from requirements related to the effective maintenance and
improvement of energy performance of an ISO 50001:2018 EnMS.
The energy targets are defined by the organization considering its current energy performance and
potential for energy performance improvement. When the organization defines an energy target(s)
in terms of energy savings, the methods described in ISO 50047, ISO 17741, or ISO 17743 can be
used. When the organization defines an energy target(s) based on an EnPI, the methods described in
ISO 50006 can be used.
5.2 Presentation of status
The results of evaluating the basic items for the SMS, OMS and TAS can be presented by using a visual
representation such as a spider diagram. This allows for a visual presentation of the status of energy
management at a point in time. This type of visual representation also allows organizations to
demonstrate progress over time (See ). see Figure 3).
A
TAS
B
C
D
C C
B B
A
A
OMS SMS
KEY:
---------------------- Page: 14 ----------------------
Blue triangle is period 1 showing initial status (CCD)
Green triangle is period 2 showing improvement in SMS, and TAS (BCC)
Orange triangle is period 3 showing improvement in SMS, OMS, and TAS (ABB)
Figure 3 — Example spider diagram
Note: Figure 3 only shows the basic scores for SMS, OMS, and TAS.
Additional information is available in .Annex A.
Key
Blue triangle is period 1 showing initial status (CCD)
Green triangle is period 2 showing improvement in the SMS and TAS (BCC)
Orange triangle is period 3 showing improvement in the SMS, OMS and TAS (ABB)
NOTE This figure only shows the basic scores for the SMS, OMS and TAS.
Figure 3 — Example spider diagram
6 EMPS
6.1 General
The status of energy management of an organization is indicated by its EMPS. An overview of the
EMPS and the method for its evaluation is shown in this clause.
6.2 SMS
The SMS for an organization is determined by evaluating structural elements of its energy
management. The basic SMS is based on criteria selected from structural elements of
ISO 50001:2018. The criteria for advanced items for the SMS are given in Annex A.
The method for determining the basic SMS is described in Clause 7.
---------------------- Page: 15 ----------------------
6.3 OMS
The OMS for an organization is determined by evaluating operational elements of its energy
management. The basic OMS is based on criteria selected from operational elements of
ISO 50001:2018. The criteria for advanced items for the OMS are given in Annex B.
The method for determining the basic OMS is described in Clause 8.
6.4 TAS
The TAS for an organization is determined by evaluating the degree of achievement of its energy
target(s). The TAS is based on the energy target(s) established by the organization. The criteria for
advanced items for the TAS are given in Annex C.
The period of time to achieve an energy target(s) can range from a short period of time (e.g. week,
month) to multiple years. When an organization establishes an energy target(s) over multiple years,
it should set annual milestones in its action plans and evaluate achievement relative to those annual
milestones.
The method for determining the basic TAS is described in Clause 9.
7 Method for determination of SMS
7.1 General
The SMS should be determined by the following two criteria:
— Basic items: items for the structural elements of energy management based on the requirements
of ISO 50001:2018.
— Advanced items: items for the structural element of energy management for achieving a higher
level of improvement in energy performance as compared towith basic items.
Organizations should evaluate the structure of their management system, according to the criteria
described in clause 7.2 and Annex A.
7.2 Basic items for SMS
Basic items for the SMS as described in Table 1 are based on the structural requirements in
ISO 50001:2018. The criteria are evaluated and, if the organization has met the criterion, a point
value of one (1) is assigned. If the criterion is not met, then a point value of zero (0) is assigned. No
partial values are assigned (e.g. 0.,5). After evaluating all the criteria in Table 1, the basic SMS is
determined by using the method described in 7.3.
Table 1 — Basic Itemsitems for SMS
Clause
Evaluation criteria
Item
number in Possible
identification
(Description
ISO 50001: points
no.
(description of the reference state)
2018
External issues that are relevant to the organization’s purpose
and that affect its ability to achieve the intended outcome(s) of
SB-1 4.1 1
its energy management and to improve its energy performance
are determined.
---------------------- Page: 16 ----------------------
Clause
Evaluation criteria
Item
number in Possible
identification
(Description
ISO 50001: points
no.
(description of the reference state)
2018
Internal issues that are relevant to the organization’s purpose
and that affect its ability to achieve the intended outcome(s) of
1
its energy management and to improve its energy performance
are determined.
The interested parties that are relevant to energy performance
1
and its energy management are determined.
The relevant energy requirements of the identified interested
1
parties are determined.
The identified needs and expectations related to energy, which
the organization addresses through its energy management, are 1
determined.
SB-2 4.2
The applicable legal requirements and other requirements are
1
accessible.
The applicable legal requirements and other requ
...
FINAL
TECHNICAL ISO/DTS
DRAFT
SPECIFICATION 50011
ISO/TC 301
Energy management systems ―
Secretariat: ANSI
Assessing energy management using
Voting begins on:
2022-11-25 ISO 50001:2018
Voting terminates on:
2023-01-20
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NATIONAL REGULATIONS. © ISO 2022
---------------------- Page: 1 ----------------------
ISO/DTS 50011:2022(E)
FINAL
TECHNICAL ISO/DTS
DRAFT
SPECIFICATION 50011
ISO/TC 301
Energy management systems ―
Secretariat: ANSI
Assessing energy management using
Voting begins on:
ISO 50001:2018
Voting terminates on:
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ii
© ISO 2022 – All rights reserved
NATIONAL REGULATIONS. © ISO 2022
---------------------- Page: 2 ----------------------
ISO/DTS 50011:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 1
3.1 Terms and definitions . 1
3.2 Abbreviated terms . 2
4 Objectives and boundary for the EMPS measurement . 2
4.1 Understanding the objective of EMPS measurement . 2
4.2 Determination of boundary for EMPS measurement . 3
5 Overview of measurement of EMPS .3
5.1 Structure of the EMPS . 3
5.2 Presentation of status . 3
6 EMPS . 4
6.1 General . 4
6.2 SMS . 4
6.3 OMS . 4
6.4 TAS . 5
7 Method for determination of SMS . 5
7.1 General . 5
7.2 Basic items for SMS . 5
7.3 Scoring method for the basic SMS items . 11
8 Method for determination of OMS .12
8.1 General .12
8.2 Basic items for OMS .12
8.3 Scoring method for basic OMS items . 17
9 Method of determination of TAS .18
9.1 General . 18
9.2 Basic items for TAS . 18
9.3 Scoring method for basic TAS items . 19
10 Advanced scoring .20
10.1 General . 20
10.2 Scoring guidance for advanced items . 21
11 Update the EMPS .21
Annex A (informative) Advanced items for SMS .22
Annex B (informative) Advanced items for OMS .24
Annex C (informative) Advanced items for TAS .26
Bibliography .27
iii
© ISO 2022 – All rights reserved
---------------------- Page: 3 ----------------------
ISO/DTS 50011:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and nongovernmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 301, Energy management and energy
savings.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
© ISO 2022 – All rights reserved
---------------------- Page: 4 ----------------------
ISO/DTS 50011:2022(E)
Introduction
0.1 Overview
This guidance document provides a method for determining the status of an organization’s energy
management using an energy management performance score (EMPS). Measuring energy management
and energy performance is expected to guide organizations to more effective energy management.
This document can be used by organizations which have implemented or are implementing an energy
management system (EnMS) based on ISO 50001:2018, or any other system of energy management.
Organizations which have not implemented an EnMS may use this document for determining their
scoring status of structure, operation and/or energy performance. The EMPS can be used by:
— an organization to compare the status of its EnMS at two different points in time to determine
progress;
— a multisite implementation of ISO 50001:2018, to compare the status of the EnMS of two different
sites;
— two different organizations for benchmarking purposes.
This document defines evaluation items and does not specify the order in which each evaluated item is
implemented. This document does not provide guidance on the implementation of ISO 50001:2018. For
information on implementing ISO 50001:2018, see ISO 50004 or ISO 50005.
The EMPS is the result of three evaluated elements, as shown in Figure 1:
— structure management score (SMS);
— operation management score (OMS);
— target achievement score (TAS).
Figure 1 — Outline of the calculation method of the EMPS
The requirements of ISO 50001:2018 are represented by the basic items shown in Tables 1, 3 and 5. An
overview of the three components in the EMPS are shown in Figure 2.
v
© ISO 2022 – All rights reserved
---------------------- Page: 5 ----------------------
ISO/DTS 50011:2022(E)
Figure 2 — Overview of SMS, OMS and TAS criteria
The results for the SMS, OMS and TAS are determined at four levels of score A, B, C and D. The highest
score is A and the lowest score is D. In each element, basic items (see Tables 1, 3 and 5) and advanced
items (see Tables A.1, B.1 and C.1) are addressed. The basic items and advanced items are scored
separately. Although the advanced items are not included in the requirements of ISO 50001:2018, they
provide additional opportunities for improving the organization’s energy management structure and
operations.
To assist organizations with applying this document, it is strongly recommended that capital letters
(A, B, C, D) are used for the basic categories of structure (SMS), operation (OMS) and performance
(TAS). The capital letters are compared across time for internal use but can be compared with other
interested parties. To facilitate the comparison, the items in Tables 1, 3 and 5 cannot be modified. The
use of colours also can help represent the status of the EnMS.
It is strongly recommended that the advanced items are represented by lower case letters (a, b, c, d).
The same colour is used for the components (i.e. for both basic and advanced in each category the same
colour is used) to assist with the visual representation. Since each organization applying this document
can have different needs and objectives, the advanced items can be modified by the organization. The
organization retains documented information on the advanced items to ensure transparency and
allow for comparisons within the organization over time. That means that Tables A.1, B.1 and C.1 are a
starting part for use by the organization. The organization can add or remove items.
The structural elements of an EnMS conforming to ISO 50001:2018 are used as the criteria for SMS
scoring. These criteria include, for example, context of the organization, energy policy, leadership
commitment, internal audit and management review.
The operational elements of an EnMS conforming to ISO 50001:2018 are used as the criteria for OMS
scoring. These criteria include, for example, measurement and management of energy performance,
operation of facilities/equipment associated with significant energy uses (SEUs), design and
procurement related to SEUs and energy supply, and management of actions to improve energy
performance.
The TAS is evaluated based on achievement of energy target(s) established by the organization. Energy
target(s) can be related to energy performance improvement including energy savings. Energy savings
can be determined by the methods described in ISO 50047:2016, ISO 17741:2016 or ISO 17743:2016.
vi
© ISO 2022 – All rights reserved
---------------------- Page: 6 ----------------------
ISO/DTS 50011:2022(E)
Energy performance improvement can be evaluated by the methods described in ISO 50006. An energy
target can also be established based on benchmarks defined by the government or industry groups.
NOTE 2 The requirements for energy benchmarks defined by the government or industry groups are often
based on absolute or specific energy consumption, without normalization or consideration of relevant variables.
These do not always meet the requirements for evaluating energy performance improvement described in
ISO 50001:2018.
0.2 Benefits
The benefits associated with use of this document are:
— for organizations:
— a clear indication of areas for improvement in energy management;
— a robust and holistic indicator(s) of energy performance;
— alignment with ISO 50001:2018;
— for external authorities or organizations:
— a robust and holistic indicator(s) of energy performance;
— identification of best practices in different types of organizations;
— promotion of ISO 50001:2018 in existing and new organizations.
vii
© ISO 2022 – All rights reserved
---------------------- Page: 7 ----------------------
TECHNICAL SPECIFICATION ISO/DTS 50011:2022(E)
Energy management systems ― Assessing energy
management using ISO 50001:2018
1 Scope
This document gives guidance based on ISO 50001:2018 to measure the status of energy management in
an organization. The measurement results are described by using three scores: structure management
score (SMS), operation management score (OMS) and target achievement score (TAS). This document
presents methodologies on how the basic and advanced scores can be calculated.
This document is applicable to organizations that are considering implementation, are implementing
or have implemented an ISO 50001:2018 energy management system (EnMS) or any other system for
energy management. It can be used to identify areas for improvement or to identify areas in which
improvement has taken place.
This document is applicable to any organization or association (e.g. national energy authorities, energy
intensive industries implementing advanced energy management to small and medium enterprises)
regardless of its type, size or complexity, etc. This document does not apply to countries, regions or
cities.
This document does not provide an interpretation of or modify the requirements of ISO 50001:2018.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 50001:2018, Energy management systems — Requirements with guidance for use
3 Terms, definitions and abbreviated terms
For the purposes of this document, the terms and definitions given in ISO 50001:2018 and the following
apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1 Terms and definitions
3.1.1
energy management performance score
EMPS
evaluation result of quantifying the status of energy management
Note 1 to entry: The status of energy management is a combination of the structure management score (3.1.2),
operation management score (3.1.3) and target achievement score (3.1.4).
1
© ISO 2022 – All rights reserved
---------------------- Page: 8 ----------------------
ISO/DTS 50011:2022(E)
3.1.2
structure management score
SMS
evaluation result of quantifying the status of structural elements of energy management
Note 1 to entry: This evaluation result is determined at four levels (A, B, C, D) for basic scores and (a, b, c, d) for
advanced scores.
3.1.3
operation management score
OMS
evaluation result of quantifying the status of operational elements of energy management
Note 1 to entry: This evaluation result is determined at four levels (A, B, C, D) for basic scores and (a, b, c, d) for
advanced scores.
3.1.4
target achievement score
TAS
evaluation result of quantifying the achievement of energy target(s)
Note 1 to entry: The energy target(s) is established by the organization.
Note 2 to entry: This evaluation result is determined at four levels (A, B, C, D) for basic scores and (a, b, c, d) for
advanced scores.
3.1.5
significant energy use
SEU
energy use accounting for substantial energy consumption and/or offering considerable potential for
energy performance improvement
[SOURCE: ISO 50001:2018, 3.5.6, modified — Notes 1 and 2 to entry deleted.]
3.2 Abbreviated terms
EMPS energy management performance score
EnB energy baseline
EnMS energy management system
EnPI energy performance indicator
OMS operation management score
SEU significant energy use
SMS structure management score
TAS target achievement score
4 Objectives and boundary for the EMPS measurement
4.1 Understanding the objective of EMPS measurement
The main objective of using the EMPS is to measure and monitor the status of energy management in an
organization to determine its progress. Additional objectives can be:
a) to help to monitor the organization’s activities for improving energy performance;
2
© ISO 2022 – All rights reserved
---------------------- Page: 9 ----------------------
ISO/DTS 50011:2022(E)
b) to be part of green initiative(s) of the organization based on the expectations of its customers;
c) to increase the organization’s competitiveness;
d) benchmarking with different parts of the organization to identify opportunities for improvement
in their energy performance;
e) benchmarking the organization’s performance with other members of an industry association.
4.2 Determination of boundary for EMPS measurement
The boundaries for the EMPS should be within the energy management activities of the organization
and the EnMS. The organization should determine and document the boundary appropriate to the
measurement of the EMPS. Where an organization has already established an ISO 50001:2018 EnMS,
the boundary for the EMPS measurement can be the same as the boundary of its ISO 50001:2018 EnMS.
In determining the boundary, the following should be considered:
— objective of the EMPS measurement;
— boundary of the EnMS;
— energy types used by the organization.
The EMPS is typically applied to all the energy management activities operated by the organization, to
minimize the risk of choosing higher performing parts of the scope of the system. However, it can also
be applied to distinct parts within an organization, to a multisite organization or to more than one
organization.
5 Overview of measurement of EMPS
5.1 Structure of the EMPS
The EMPS is a combination of basic scores and advanced scores. For the basic score, the SMS, OMS and
TAS are each evaluated using four levels of scoring defined as A, B, C or D, where A is the highest and
D is the lowest possible level. Levels are used to summarize the overall condition of the EnMS. These
are more useful than the underlying numeric score because the evaluation criteria consider qualitative
characteristics of the EnMS. For example, when each basic level is “A” for the SMS, OMS and TAS, the
combined score for the basic items of the EMPS is “AAA”. Similarly, when each advanced level is “b” the
combined score for the advanced items of the EMPS is “bbb”, resulting in a combined EMPS of “AbAbAb”.
Criteria for the basic SMS are selected from requirements related to the structure of an ISO 50001:2018
EnMS. The organization should maintain documented information on the application of this document,
if communicating with interested parties.
Criteria for the basic OMS are selected from requirements related to the effective maintenance and
improvement of energy performance of an ISO 50001:2018 EnMS.
The energy targets are defined by the organization considering its current energy performance and
potential for energy performance improvement. When the organization defines an energy target(s) in
terms of energy savings, the methods described in ISO 50047, ISO 17741 or ISO 17743 can be used. When
the organization defines an energy target(s) based on an EnPI, the methods described in ISO 50006 can
be used.
5.2 Presentation of status
The results of evaluating the basic items for the SMS, OMS and TAS can be presented by using a
visual representation such as a spider diagram. This allows for a visual presentation of the status of
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energy management at a point in time. This type of visual representation also allows organizations to
demonstrate progress over time (see Figure 3).
Additional information is available in Annex A.
Key
Blue triangle is period 1 showing initial status (CCD)
Green triangle is period 2 showing improvement in the SMS and TAS (BCC)
Orange triangle is period 3 showing improvement in the SMS, OMS and TAS (ABB)
NOTE This figure only shows the basic scores for the SMS, OMS and TAS.
Figure 3 — Example spider diagram
6 EMPS
6.1 General
The status of energy management of an organization is indicated by its EMPS. An overview of the EMPS
and the method for its evaluation is shown in this clause.
6.2 SMS
The SMS for an organization is determined by evaluating structural elements of its energy management.
The basic SMS is based on criteria selected from structural elements of ISO 50001:2018. The criteria for
advanced items for the SMS are given in Annex A.
The method for determining the basic SMS is described in Clause 7.
6.3 OMS
The OMS for an organization is determined by evaluating operational elements of its energy
management. The basic OMS is based on criteria selected from operational elements of ISO 50001:2018.
The criteria for advanced items for the OMS are given in Annex B.
The method for determining the basic OMS is described in Clause 8.
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ISO/DTS 50011:2022(E)
6.4 TAS
The TAS for an organization is determined by evaluating the degree of achievement of its energy
target(s). The TAS is based on the energy target(s) established by the organization. The criteria for
advanced items for the TAS are given in Annex C.
The period of time to achieve an energy target(s) can range from a short period of time (e.g. week,
month) to multiple years. When an organization establishes an energy target(s) over multiple years,
it should set annual milestones in its action plans and evaluate achievement relative to those annual
milestones.
The method for determining the basic TAS is described in Clause 9.
7 Method for determination of SMS
7.1 General
The SMS should be determined by the following two criteria:
— Basic items: items for the structural elements of energy management based on the requirements of
ISO 50001:2018.
— Advanced items: items for the structural element of energy management for achieving a higher level
of improvement in energy performance as compared with basic items.
Organizations should evaluate the structure of their management system, according to the criteria
described in 7.2 and Annex A.
7.2 Basic items for SMS
Basic items for the SMS as described in Table 1 are based on the structural requirements in
ISO 50001:2018. The criteria are evaluated and, if the organization has met the criterion, a point value
of one (1) is assigned. If the criterion is not met, then a point value of zero (0) is assigned. No partial
values are assigned (e.g. 0,5). After evaluating all the criteria in Table 1, the basic SMS is determined by
using the method described in 7.3.
Table 1 — Basic items for SMS
Clause
Item
number in Evaluation criteria Possible
identification
ISO 50001: (description of the reference state) points
no.
2018
External issues that are relevant to the organization’s purpose
and that affect its ability to achieve the intended outcome(s) of
1
its energy management and to improve its energy performance
are determined.
SB1 4.1
Internal issues that are relevant to the organization’s purpose
and that affect its ability to achieve the intended outcome(s) of
1
its energy management and to improve its energy performance
are determined.
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TTaabblle 1 e 1 ((ccoonnttiinnueuedd))
Clause
Item
number in Evaluation criteria Possible
identification
ISO 50001: (description of the reference state) points
no.
2018
The interested parties that are relevant to energy performance
1
and its energy management are determined.
The relevant energy requirements of the identified interested
1
parties are determined.
The identified needs and expectations related to energy, which
the organization addresses through its energy management, are 1
determined.
SB2 4.2
The applicable legal requirements and other requirements are
1
accessible.
The applicable legal requirements and other requirements are
1
...
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