SIST ISO 50002:2017

Energy audits - Requirements with guidance for use

This International Standard specifies the process requirements for carrying out an energy audit in
relation to energy performance. It is applicable to all types of establishments and organizations, and all
forms of energy and energy use.
This International Standard specifies the principles of carrying out energy audits, requirements for the
common processes during energy audits, and deliverables for energy audits.
This International Standard does not address the requirements for selection and evaluation of
the competence of bodies providing energy audit services, and it does not cover the auditing of an
organization’s energy management system, as these are described in ISO 50003.
This International Standard also provides informative guidance on its use (see Annex A).

Audits énergétiques - Exigences et recommandations de mise en oeuvre

Energetske presoje - Zahteve z navodili za uporabo

Ta mednarodni standard določa zahteve za postopek izvajanja energetske presoje v
povezavi z energetsko zmogljivostjo. Velja za vse vrste ustanov in organizacij ter vse vrste energije in uporabe energije.
Ta mednarodni standard določa načela za izvajanje energetskih presoj, zahteve za skupne postopke med energetskimi presojami in izsledke energetskih presoj.
Ta mednarodni standard ne obravnava zahtev za izbor organov, ki izvajajo energetsko presojo, in ocenjevanje njihove usposobljenosti ter ne zajema presoje sistema za upravljanje z energijo organizacije, ker so te zahteve opisane v standardu ISO 50003.
Ta mednarodni standard podaja tudi informativne smernice za njegovo uporabo (glej dodatek A).

General Information

• Status: Published
• Publication Date: 22-Mar-2017
• ICS: 03.100.70 - Management systems
• ICS: 27.015 - Energy efficiency. Energy conservation in general
• Technical Committee: I10 - Imaginarni 10 za neaktivna TDT na elektro področju
• Current Stage: 6100 - Translation of adopted SIST standards (Adopted Project)
• Start Date: 12-Jun-2017
• Due Date: 11-Jun-2018
• Completion Date: 17-Oct-2017
• Directive: TP222 - Pravilnik o metodologiji za izdelavo in vsebini energetskega pregleda
• Ref Project: ISO 50002:2014 - Energy audits -- Requirements with guidance for use

Standards Content (sample)

INTERNATIONAL ISO
STANDARD 50002
First edition
2014-07-01
Energy audits — Requirements with
guidance for use
Audits énergétiques — Exigences et recommandations de mise en
oeuvre
Reference number
ISO 50002:2014(E)
ISO 2014
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ISO 50002:2014(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2014

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form

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ii © ISO 2014 – All rights reserved
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ISO 50002:2014(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Principles ..................................................................................................................................................................................................................... 3

4.1 General ........................................................................................................................................................................................................... 3

4.2 Energy auditor ......................................................................................................................................................................................... 3

4.3 Energy audit .............................................................................................................................................................................................. 4

4.4 Communication ...................................................................................................................................................................................... 5

4.5 Roles, responsibilities and authority ................................................................................................................................... 5

5 Performing an energy audit ...................................................................................................................................................................... 5

5.1 General ........................................................................................................................................................................................................... 5

5.2 Energy audit planning ...................................................................................................................................................................... 6

5.3 Opening meeting ................................................................................................................................................................................... 7

5.4 Data collection ......................................................................................................................................................................................... 8

5.5 Measurement plan ............................................................................................................................................................................... 8

5.6 Conducting the site visit ......... ......................................................................................................................................................... 9

5.7 Analysis.......................................................................................................................................................................................................10

5.8 Energy audit reporting ..................................................................................................................................................................12

5.9 Closing meeting ...................................................................................................................................................................................13

Annex A (informative) Guidance on the use of this International Standard ............................................................14

Bibliography .............................................................................................................................................................................................................................22

© ISO 2014 – All rights reserved iii
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ISO 50002:2014(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 on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers

to Trade (TBT) see the following URL: Foreword - Supplementary information

The committee responsible for this document is Technical Committee ISO/TC 242, Energy management.

iv © ISO 2014 – All rights reserved
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ISO 50002:2014(E)
Introduction

The purpose of this International Standard is to define the minimum set of requirements leading to the

identification of opportunities for the improvement of energy performance.

An energy audit comprises a detailed analysis of the energy performance of an organization, equipment,

system(s) or process(es). It is based on appropriate measurement and observation of energy use, energy

efficiency and consumption. Energy audits are planned and conducted as part of the identification

and prioritization of opportunities to improve energy performance, reduce energy waste and obtain

related environmental benefits. Audit outputs include information on current use and performance and

they provide ranked recommendations for improvement in terms of energy performance and financial

benefits.

An energy audit can support an energy review and can facilitate monitoring, measurement and analysis

as described in ISO 50001, or it can be used independently.

This International Standard allows for differences in approach and in terms of scope, boundary and

audit objective and seeks to harmonize common aspects of energy auditing in order to enhance clarity

and transparency.

The energy audit process is presented as a simple chronological sequence, but this does not preclude

repeated iterations of certain steps.

The main body of this International Standard covers the general requirements and framework common

to all energy audits that can be supplemented by equivalent national audit standards. For auditing of

specific types of facilities, processes or equipment, refer to the relevant international, national and local

standards and guidelines, some of which are referenced in the Bibliography.
In this International Standard, the following verbal forms are used:
— “shall” indicates a requirement;
— “should” indicates a recommendation;
— “may” indicates a permission;
— “can” indicates a possibility or a capacity.
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INTERNATIONAL STANDARD ISO 50002:2014(E)
Energy audits — Requirements with guidance for use
1 Scope

This International Standard specifies the process requirements for carrying out an energy audit in

relation to energy performance. It is applicable to all types of establishments and organizations, and all

forms of energy and energy use.

This International Standard specifies the principles of carrying out energy audits, requirements for the

common processes during energy audits, and deliverables for energy audits.

This International Standard does not address the requirements for selection and evaluation of

the competence of bodies providing energy audit services, and it does not cover the auditing of an

organization’s energy management system, as these are described in ISO 50003.

This International Standard also provides informative guidance on its use (see Annex A).

2 Normative references
There are no normative references.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
audit objective

purpose of an energy audit (3.3) agreed between the organization (3.13) and the energy auditor (3.5)

3.2
boundary

physical or site limits and/or organizational limits as defined by the organization (3.13)

Note 1 to entry: The boundary of an energy management system can be different from the boundary of an energy

audit (3.3).
Note 2 to entry: The energy audit can include one or more boundaries.

EXAMPLE The whole site and all energy using systems; the boiler plant; the vehicle fleet.

3.3
energy audit

systematic analysis of energy use (3.12) and energy consumption (3.7) within a defined energy audit scope

(3.4), in order to identify, quantify and report on the opportunities for improved energy performance

(3.10)

Note 1 to entry: “Energy audit” is the normal expression in English. There are other expressions for the same

concept, e.g. “diagnosi” in Italian and “diagnostic” in French.
3.4
energy audit scope

extent of energy uses (3.12) and related activities to be included in the energy audit (3.3), as defined by the

organization (3.13) in consultation with the energy auditor (3.5), which can include several boundaries

EXAMPLE Organization, facility/facilities, equipment, system(s) and process(es).
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ISO 50002:2014(E)
Note 1 to entry: The energy audit scope can include energy related to transport.
3.5
energy auditor
individual, or team of people, conducting an energy audit (3.3)

Note 1 to entry: Energy audits can be conducted by the organization (3.13) using internal resources or external

resources, such as energy consultants and energy service companies.

Note 2 to entry: An energy auditor, whether internal or external, needs to work with internal personnel relevant

to the defined energy audit scope (3.4).

[SOURCE: EN 16247-1:2012, 3.2, modified — The expression “group of people or body” has been deleted

and substituted by “or team of people”.]
3.6
energy balance

accounting of inputs and/or generation of energy supply versus energy outputs based on energy

consumption (3.7) by energy use (3.12)

Note 1 to entry: Energy storage is considered within energy supply or energy use. If included in the energy audit

scope (3.4), an energy balance needs to include energy storage and feedstock variation, as well as wasted energy,

or energy content in material flows.

Note 2 to entry: An energy balance reconciles all energy, goods and products that enter the system boundary (3.2)

against the energy, goods and products leaving the system boundary.
3.7
energy consumption
quantity of energy applied
[SOURCE: ISO 50001:2011, 3.7]
3.8
energy efficiency

ratio or other quantitative relationship between an output of performance, service, goods or energy, and

an input of energy

EXAMPLE Conversion efficiency; energy required/energy used; output/input; theoretical energy used to

operate/energy used to operate.

Note 1 to entry: Both input and output need to be clearly specified in quantity and quality, and be measurable.

[SOURCE: ISO 50001:2011, 3.8]
3.9
energy flow

description or mapping of processes for transfer of energy or conversion of energy within the defined

energy audit scope (3.4)
3.10
energy performance

measurable results related to energy efficiency (3.8), energy use (3.12) and energy consumption (3.7)

[SOURCE: ISO 50001:2011, 3.12, modified — Notes 1 and 2 have been deleted as they are specific to

energy management.]
3.11
energy performance indicator
EnPI

quantitative value or measure of energy performance (3.10), as defined by the organization (3.13)

Note 1 to entry: EnPIs could be expressed as a simple metric, ratio or a more complex model.

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ISO 50002:2014(E)
[SOURCE: ISO 50001:2011, 3.13]
3.12
energy use
manner or kind of application of energy

EXAMPLE Ventilation; lighting; heating; cooling; transportation; processes; production lines.

[SOURCE: ISO 50001:2011, 3.18]
3.13
organization

company, corporation, firm, enterprise, authority or institution, or part or combination thereof, whether

incorporated or not, public or private, that has its own functions and administration and that has the

authority to control its energy use (3.12) and consumption
Note 1 to entry: An organization can be a person or a group of people.
[SOURCE: ISO 50001:2011, 3.22]
3.14
relevant variable
quantifiable parameter impacting energy consumption (3.7)

EXAMPLE Ambient weather indicators; operating parameters (indoor temperature, light level); working

hours; production throughput.
4 Principles
4.1 General

An energy audit is characterized by reliance on a number of principles. These principles help to make

the energy audit an effective and reliable tool in support of management decisions and controls, by

providing information on which an organization can act in order to improve its energy performance.

Adherence to these principles provides a consistent approach to an effective energy audit that would

enable energy auditors, working independently from one another, to reach similar conclusions in similar

circumstances.

It is essential that energy auditor(s) are familiar with applicable health and safety requirements

throughout the audit process.

The organization selects the energy auditor(s) based on the expected energy audit scope, boundaries,

audit objectives and their competencies.
4.2 Energy auditor
4.2.1 Competency

Application of the following principles by the energy auditor is fundamental to the success of the energy

audit.

The energy auditor shall have the knowledge and skills necessary to complete the defined energy audit

scope. Competence can be shown by:

a) appropriate education, skills, experience and/or training considering local or national guidelines

and recommendations;

b) relevant technical skills specific to the energy uses, scope, boundaries and audit objective;

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ISO 50002:2014(E)
c) knowledge of appropriate legal and other requirements;
d) familiarity with the energy uses being audited;

e) knowledge of the requirements of this International Standard, national and local energy auditing

standards;

f) (for a team member designated as lead energy auditor) having the skills to manage and provide

leadership to the energy audit team: a lead auditor should have managerial, professional and

leadership skills in order to manage a team.

NOTE 1 Where there is a single auditor, he/she is considered to be the lead auditor.

NOTE 2 Where a national or local energy auditor certification scheme, or equivalent, is available, certified

energy auditors can be considered. Some schemes can be technology specific.

NOTE 3 The energy auditor is encouraged to demonstrate continual professional development to maintain

and improve auditing knowledge, technical skills and personal attributes. Continual professional development

could be achieved through means such as attendance at meetings, seminars, conferences, technical training, work

experience, self- study, coaching, or other relevant activities.
4.2.2 Confidentiality

The confidentiality of the audit deliverables shall be agreed upon by the organization and the auditor

prior to the start of the energy audit. Energy audit information shall not be used inappropriately

for personal gain by the energy auditor, or in a manner detrimental to the legitimate interest of the

organization.

NOTE This concept includes the proper handling of sensitive or confidential information.

4.2.3 Objectivity

The energy auditor shall act independently and in an impartial manner. Conflicts of interest (personal,

financial or other) shall be identified and disclosed to the organization in a timely manner.

If the organization intends to carry out an energy audit using internal personnel, every effort should be

made to remove bias and encourage objectivity.
4.2.4 Access to equipment, resources and information

For completion of the energy audit based on the defined energy audit scope and boundaries, access is

required to:
a) the organization, facility/facilities, equipment, system(s) and process(es);

b) personnel (engineering, operations, maintenance, etc.), their equipment vendors, contractors and

others to collect information pertinent and useful to the energy audit and analysis of data;

c) other information sources, such as drawings, manuals, test reports, historical utility bill information,

monitoring and control data, electrical equipment panels and calibration records.

4.3 Energy audit
The energy audit shall be conducted according to the following principles:

a) the audit is consistent with the agreed energy audit scope, boundary and audit objective(s);

b) the measurements and observations are appropriate to the energy uses and consumption;

c) the collected energy performance data are representative of the activities, processes, equipment

and systems;
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ISO 50002:2014(E)

d) the used data for quantifying energy performance and identifying improvement opportunities are

consistent and unique;
e) the process of collecting, validating and analysing data is traceable;

f) the energy audit report provides energy performance improvement opportunities based on

appropriate technical and economic analysis.

NOTE Appropriate analysis is consistent with the energy audit scope and sufficiently detailed to allow for

effective decision making.
4.4 Communication

The energy auditor and organization shall establish communication channels and methods necessary

to facilitate the audit in a timely manner. Clear lines of communication are essential for the energy audit

team, among the team and with the organization, in a timely manner.
4.5 Roles, responsibilities and authority

The energy auditor(s) and the organization shall determine their respective roles, responsibilities and

authority prior to the start of the energy audit.

NOTE Annex A provides guidance on the typical roles and responsibilities during an energy audit.

5 Performing an energy audit
5.1 General

The energy audit process consists of the following stages, as illustrated in Figure 1:

a) energy audit planning (5.2);
b) opening meeting (5.3) and data collection (5.4);
c) measurement plan (5.5);
d) conducting the site visit (5.6);
e) analysis (5.7);
f) energy audit reporting (5.8);
g) closing meeting (5.9).
Figure 1 — Energy audit process flow diagram
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ISO 50002:2014(E)
5.2 Energy audit planning

Energy audit planning activities are essential to define the energy audit scope and the objective(s), and

to gather preliminary information from the organization.

In order to develop the energy audit scope and ensure that an effective energy audit is conducted, the

following shall apply.
a) The energy auditor and the organization shall agree on the following:
1) the energy audit scope, boundaries and objective(s);
2) needs and expectations to achieve the audit objectives;
3) the level of detail required;

NOTE 1 Annex A provides guidance that might be useful at the planning stage, including indicative types

of audit.
4) the time period to complete the energy audit;

5) criteria for evaluating and ranking opportunities for improving energy performance;

EXAMPLE 1 Return on investment; potential energy saving over time; life cycle costing; incremental cost

analysis for replacement with more energy efficient equipment.

NOTE 2 Opportunities for improving energy performance can include non-energy benefits.

6) time commitments and other resources from the organization;
7) relevant data to be made available prior to the start of the energy audit;

EXAMPLE 2 Drawings; plant layout; historical energy consumption; utility bills when appropriately

verified; equipment manuals and other technical documentation, including planned measurement and/or

inspections to be made during the energy audit.
8) expected deliverables and report format;

9) whether a draft of the final report should be presented to the organization for comment;

10) the organization’s representative responsible for the energy audit process;
11) the process for agreeing on any change in the energy audit scope.

b) The energy auditor shall request information to establish the energy audit context, including, as

applicable:
1) regulatory requirements or other variables affecting the energy audit;

2) regulatory or other constraints affecting the scope or other aspects of the proposed energy

audit;
3) strategic plans that may affect the organization’s energy performance;

EXAMPLE 3 Asset management plans; changing product mix; expansion plans; planned projects;

outsourcing facilities management or equipment maintenance.

4) management systems, such as environmental, quality, energy management or others;

5) factors or special considerations that may change the energy audit scope, process and

conclusions;
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ISO 50002:2014(E)

6) any considerations, even subjective ones, including existing opinions, ideas and restrictions

relating to potential energy performance improvement measures.
c) The energy auditor shall inform the organization of:

1) facilities, equipment and services required to enable the energy audit to be carried out;

2) commercial or other interest which could influence his or her conclusions or recommendations;

3) any other conflict of interest issues.
5.3 Opening meeting

The purpose of the opening meeting is for the energy auditor to brief interested parties regarding

the energy audit objectives, defined energy audit scope, boundaries and methods, and to review the

arrangements for the energy audit (e.g. site safety inductions, access, security, etc.).

NOTE 1 A meeting can include telephone calls, teleconferencing and other electronic methods.

a) The energy auditor shall request the organization to:

1) assign personnel to assist the energy auditor, or appropriate individuals constituted as a team

for the purpose: these individuals shall have the necessary competences and authority to

request or carry out direct operations on processes and equipment, support the defined energy

audit scope and objectives;

2) inform the appropriate personnel and other interested parties about the energy audit, their

roles, responsibilities, cooperation and any requirements placed on them;
3) ensure the cooperation of the affected parties;

4) confirm any unusual conditions that may affect the energy audit or energy performance, i.e.

maintenance work, special visits (customer, regulatory, etc.), significant changes in production

volumes and others.

Where the energy auditor is not an individual, a member of the energy auditing team shall be

nominated as lead energy auditor.

NOTE 2 Some of these requirements might already have been addressed at an earlier stage.

b) The energy auditor shall agree with the organization on:

1) arrangements for access, as required by the defined energy audit scope for the energy auditor;

2) requirements for health, safety, security and emergency rules and procedures;

3) availability of resources, including energy data and the need for additional metering;

4) applicable non-disclosure agreements (e.g. tenants in a building);
5) requirements for any special measurements, if needed;
6) procedures to be followed for installation of measuring equipment, if needed.

The energy auditor shall review the details of the energy audit planning with the organization,

including schedules, processes, the possible need for additional metering equipment, interviewing

the organization’s personnel, meetings, site visits, etc.
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ISO 50002:2014(E)
5.4 Data collection

Where available, the energy auditor shall collect, collate and record the appropriate energy data that

support the audit objectives. This includes the following information:
a) a list of energy consuming systems, processes and equipment;

b) detailed characteristics of the energy uses within the defined energy audit scope, including relevant

variables and how the organization believes they influence energy performance;
c) historical and current energy performance data, including:
1) energy consumption;
2) relevant variables;
3) relevant related measurements;

EXAMPLE 1 Power factor measurements; results from a thermographic or compressed air survey.

4) operational history and past events that could have affected energy consumption in the period

covered by the data collected;
d) monitoring equipment, configuration and analysis information;
EXAMPLE 2 Local gauges, distributed control systems, instrumentation types.

NOTE The availability of measured data can be collected and collated by an external party, e.g. a utility

company.
e) future plans that may affect energy performance;
EXAMPLE 3 Planned expansions, contractions or changes in production volume.

EXAMPLE 4 Planned changes in, or replacement of, equipment or systems that have significant energy

implications.
EXAMPLE 5 Removal or the outsourcing of facilities, equipment or systems.
f) design, operation and maintenance documents;

EXAMPLE 6 As-built drawings, equipment specification sheet; plot plan; control system data.

g) energy audits or previous studies related to energy performance;

h) current energy rate schedule(s) (or tariffs) or a reference rate (or tariff) to be used for financial

analysis;
i) other relevant economic data;
j) knowledge on how the organization manages its energy use and consumption;
k) the energy distribution system and its management.
5.5 Measurement plan

For any on-site data measurement and collection, the energy auditor and the organization shall come to

an agreement on a measurement plan. The data measurement plan may be revised based upon the energy

auditor’s findings during the energy audit. The main items that shall be included in the measurement

plan are:

a) a list of relevant measurement points and their associated processes and measuring equipment;

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ISO 50002:2014(E)

b) identification of any additional measurement points, suitable measurement equipment, their

associated processes and feasibility of installation;

c) accuracy and repeatability required for the measurements and their associated measurement

uncertainty;

d) measurement duration and frequency for each measurement, i.e. individual data points or continuous

monitoring;
e) acquisition frequency for each measurement;
f) a suitable time period where the activities are representative;
g) releva
...

ISO 50002
Energy audits
Requirements with guidance
for use
First edition
2014-07-01
---------------------- Page: 1 ----------------------
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© ISO 2014 – All rights reserved
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ISO 50002:2014
Executive summary
— Energy audits are planned and conducted as part of the identification and pri-

oritization of opportunities to improve energy performance, reduce energy waste and

obtain related environmental benefits. Energy audits can be carried out independently

or in combination with an energy management system based on ISO 50001, and they
help organizations to identify how to improve management of their own energy use
and efficiency.
— Audit outputs include information on current use and performance and they
provide ranked recommendations for improvement in terms of energy performance

and financial benefits. This International Standard encourages organizations to evalu-

ate financial benefits over the planned lifetime of the energy saving opportunities.

— The process requirements for carrying out an energy audit in relation to energy

performance are specified in this International Standard. Users of this International

Standard are encouraged to identify opportunities for improvement from a wide range

of categories, including operational controls, maintenance controls, modifications and

capital projects.

— This International Standard specifies principles of carrying out energy audits,

requirements for the common processes during energy audits and deliverables for

energy audits. Energy audits can be carried out using in-house resources, external re-

sources or a combination of both.

— This International Standard is applicable to all types of establishments and or-

ganizations, and all forms of energy and energy use.
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ISO 50002:2014
Contents Page

Executive summary ........................................................................................................................................................................................3

Foreword ...................................................................................................................................................................................................................5

Introduction ...........................................................................................................................................................................................................6

1 Scope ...........................................................................................................................................................................................................7

2 Normative references ................................................................................................................................................................7

3 Terms and definitions ...............................................................................................................................................................7

4 Principles ........................................................................................................................................................................................... 10

4.1 General ..................................................................................................................................................................................10

4.2 Energy auditor ................................................................................................................................................................10

4.3 Energy audit .....................................................................................................................................................................11

4.4 Communication .............................................................................................................................................................12

4.5 Roles, responsibilities and authority ..........................................................................................................12

5 Performing an energy audit ............................................................................................................................................ 12

5.1 General ..................................................................................................................................................................................12

5.2 Energy audit planning .............................................................................................................................................12

5.3 Opening meeting ..........................................................................................................................................................14

5.4 Data collection ................................................................................................................................................................15

5.5 Measurement plan ......................................................................................................................................................16

5.6 Conducting the site visit ......... ................................................................................................................................17

5.7 Analysis.................................................................................................................................................................................18

5.8 Energy audit reporting ............................................................................................................................................20

5.9 Closing meeting .............................................................................................................................................................21

Annex A (informative) Guidance on the use of this International Standard ..................................... 22

Bibliography ...................................................................................................................................................................................................... 31

© ISO 2014 – All rights reserved
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ISO 50002:2014
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 elec-

trotechnical 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 on the meaning of ISO specific terms and expressions related to con-

formity assessment, as well as information about ISO’s adherence to the WTO principles in

the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary

information

The committee responsible for this document is Technical Committee ISO/TC 242, Energy

management.
© ISO 2014 – All rights reserved
---------------------- Page: 5 ----------------------
ISO 50002:2014
Introduction

The purpose of this International Standard is to define the minimum set of requirements

leading to the identification of opportunities for the improvement of energy performance.

An energy audit comprises a detailed analysis of the energy performance of an organi-

zation, equipment, system(s) or process(es). It is based on appropriate measurement

and observation of energy use, energy efficiency and consumption. Energy audits are

planned and conducted as part of the identification and prioritization of opportunities

to improve energy performance, reduce energy waste and obtain related environmental

benefits. Audit outputs include information on current use and performance and they

provide ranked recommendations for improvement in terms of energy performance and

financial benefits.

An energy audit can support an energy review and can facilitate monitoring, measure-

ment and analysis as described in ISO 50001, or it can be used independently.

This International Standard allows for differences in approach and in terms of scope,

boundary and audit objective and seeks to harmonize common aspects of energy audit-

ing in order to enhance clarity and transparency.

The energy audit process is presented as a simple chronological sequence, but this does

not preclude repeated iterations of certain steps.

The main body of this International Standard covers the general requirements and frame-

work common to all energy audits that can be supplemented by equivalent national audit

standards. For auditing of specific types of facilities, processes or equipment, refer to the

relevant international, national and local standards and guidelines, some of which are

referenced in the Bibliography.
In this International Standard, the following verbal forms are used:
— “shall” indicates a requirement;
— “should” indicates a recommendation;
— “may” indicates a permission;
— “can” indicates a possibility or a capacity.
© ISO 2014 – All rights reserved
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ISO 50002:2014
1 Scope

This International Standard specifies the process requirements for carrying out an energy

audit in relation to energy performance. It is applicable to all types of establishments and

organizations, and all forms of energy and energy use.

This International Standard specifies the principles of carrying out energy audits, require-

ments for the common processes during energy audits, and deliverables for energy audits.

This International Standard does not address the requirements for selection and evalu-

ation of the competence of bodies providing energy audit services, and it does not cover

the auditing of an organization’s energy management system, as these are described in

ISO 50003.

This International Standard also provides informative guidance on its use (see Annex A).

2 Normative references
There are no normative references.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
audit objective

purpose of an energy audit (3.3) agreed between the organization (3.13) and the energy

auditor (3.5)
3.2
boundary

physical or site limits and/or organizational limits as defined by the organization (3.13)

Note 1 to entry: The boundary of an energy management system can be different from the

boundary of an energy audit (3.3).
Note 2 to entry: The energy audit can include one or more boundaries.

EXAMPLE The whole site and all energy using systems; the boiler plant; the vehicle fleet.

3.3
energy audit

systematic analysis of energy use (3.12) and energy consumption (3.7) within a defined

energy audit scope (3.4), in order to identify, quantify and report on the opportunities for

improved energy performance (3.10)

Note 1 to entry: “Energy audit” is the normal expression in English. There are other expressions

for the same concept, e.g. “diagnosi” in Italian and “diagnostic” in French.
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ISO 50002:2014
3.4
energy audit scope

extent of energy uses (3.12) and related activities to be included in the energy audit (3.3),

as defined by the organization (3.13) in consultation with the energy auditor (3.5), which

can include several boundaries
EXAMPLE Organization, facility/facilities, equipment, system(s) and process(es).
Note 1 to entry: The energy audit scope can include energy related to transport.
3.5
energy auditor
individual, or team of people, conducting an energy audit (3.3)

Note 1 to entry: Energy audits can be conducted by the organization (3.13) using internal resources

or external resources, such as energy consultants and energy service companies.

Note 2 to entry: An energy auditor, whether internal or external, needs to work with internal

personnel relevant to the defined energy audit scope (3.4).

[SOURCE: EN 16247-1:2012, 3.2, modified — The expression “group of people or body”

has been deleted and substituted by “or team of people”.]
3.6
energy balance

accounting of inputs and/or generation of energy supply versus energy outputs based on

energy consumption (3.7) by energy use (3.12)

Note 1 to entry: Energy storage is considered within energy supply or energy use. If included in

the energy audit scope (3.4), an energy balance needs to include energy storage and feedstock

variation, as well as wasted energy, or energy content in material flows.

Note 2 to entry: An energy balance reconciles all energy, goods and products that enter the

system boundary (3.2) against the energy, goods and products leaving the system boundary.

3.7
energy consumption
quantity of energy applied
[SOURCE: ISO 50001:2011, 3.7]
3.8
energy efficiency

ratio or other quantitative relationship between an output of performance, service, goods

or energy, and an input of energy

EXAMPLE Conversion efficiency; energy required/energy used; output/input; theoretical

energy used to operate/energy used to operate.

Note 1 to entry: Both input and output need to be clearly specified in quantity and quality, and

be measurable.
[SOURCE: ISO 50001:2011, 3.8]
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ISO 50002:2014
3.9
energy flow

description or mapping of processes for transfer of energy or conversion of energy within

the defined energy audit scope (3.4)
3.10
energy performance

measurable results related to energy efficiency (3.8), energy use (3.12) and energy con-

sumption (3.7)

[SOURCE: ISO 50001:2011, 3.12, modified — Notes 1 and 2 have been deleted as they are

specific to energy management.]
3.11
energy performance indicator
EnPI

quantitative value or measure of energy performance (3.10), as defined by the organiza-

tion (3.13)

Note 1 to entry: EnPIs could be expressed as a simple metric, ratio or a more complex model.

[SOURCE: ISO 50001:2011, 3.13]
3.12
energy use
manner or kind of application of energy

EXAMPLE Ventilation; lighting; heating; cooling; transportation; processes; production lines.

[SOURCE: ISO 50001:2011, 3.18]
3.13
organization

company, corporation, firm, enterprise, authority or institution, or part or combination

thereof, whether incorporated or not, public or private, that has its own functions and

administration and that has the authority to control its energy use (3.12) and consumption

Note 1 to entry: An organization can be a person or a group of people.
[SOURCE: ISO 50001:2011, 3.22]
3.14
relevant variable
quantifiable parameter impacting energy consumption (3.7)

EXAMPLE Ambient weather indicators; operating parameters (indoor temperature, light

level); working hours; production throughput.
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ISO 50002:2014
4 Principles
4.1 General

An energy audit is characterized by reliance on a number of principles. These principles

help to make the energy audit an effective and reliable tool in support of management

decisions and controls, by providing information on which an organization can act in

order to improve its energy performance.

Adherence to these principles provides a consistent approach to an effective energy audit

that would enable energy auditors, working independently from one another, to reach

similar conclusions in similar circumstances.

It is essential that energy auditor(s) are familiar with applicable health and safety require-

ments throughout the audit process.

The organization selects the energy auditor(s) based on the expected energy audit scope,

boundaries, audit objectives and their competencies.
4.2 Energy auditor
4.2.1 Competency

Application of the following principles by the energy auditor is fundamental to the suc-

cess of the energy audit.

The energy auditor shall have the knowledge and skills necessary to complete the defined

energy audit scope. Competence can be shown by:

a) appropriate education, skills, experience and/or training considering local or

national guidelines and recommendations;

b) relevant technical skills specific to the energy uses, scope, boundaries and audit

objective;
c) knowledge of appropriate legal and other requirements;
d) familiarity with the energy uses being audited;

e) knowledge of the requirements of this International Standard, national and local

energy auditing standards;

f) (for a team member designated as lead energy auditor) having the skills to manage

and provide leadership to the energy audit team: a lead auditor should have
managerial, professional and leadership skills in order to manage a team.

NOTE 1 Where there is a single auditor, he/she is considered to be the lead auditor.

NOTE 2 Where a national or local energy auditor certification scheme, or equivalent, is avail-

able, certified energy auditors can be considered. Some schemes can be technology specific.

© ISO 2014 – All rights reserved
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ISO 50002:2014

NOTE 3 The energy auditor is encouraged to demonstrate continual professional development

to maintain and improve auditing knowledge, technical skills and personal attributes. Continual

professional development could be achieved through means such as attendance at meetings,

seminars, conferences, technical training, work experience, self- study, coaching, or other rel-

evant activities.
4.2.2 Confidentiality

The confidentiality of the audit deliverables shall be agreed upon by the organization and

the auditor prior to the start of the energy audit. Energy audit information shall not be

used inappropriately for personal gain by the energy auditor, or in a manner detrimental

to the legitimate interest of the organization.

NOTE This concept includes the proper handling of sensitive or confidential information.

4.2.3 Objectivity

The energy auditor shall act independently and in an impartial manner. Conflicts of inter-

est (personal, financial or other) shall be identified and disclosed to the organization in

a timely manner.

If the organization intends to carry out an energy audit using internal personnel, every

effort should be made to remove bias and encourage objectivity.
4.2.4 Access to equipment, resources and information

For completion of the energy audit based on the defined energy audit scope and bounda-

ries, access is required to:
a) the organization, facility/facilities, equipment, system(s) and process(es);

b) personnel (engineering, operations, maintenance, etc.), their equipment vendors,

contractors and others to collect information pertinent and useful to the energy
audit and analysis of data;

c) other information sources, such as drawings, manuals, test reports, historical

utility bill information, monitoring and control data, electrical equipment panels

and calibration records.
4.3 Energy audit
The energy audit shall be conducted according to the following principles:

a) the audit is consistent with the agreed energy audit scope, boundary and audit

objective(s);
b) the measurements and observations are appropriate to the energy uses and
consumption;
c) the collected energy performance data are representative of the activities,
processes, equipment and systems;
d) the used data for quantifying energy performance and identifying improvement
opportunities are consistent and unique;
© ISO 2014 – All rights reserved
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ISO 50002:2014
e) the process of collecting, validating and analysing data is traceable;
f) the energy audit report provides energy performance improvement opportunities
based on appropriate technical and economic analysis.

NOTE Appropriate analysis is consistent with the energy audit scope and sufficiently detailed

to allow for effective decision making.
4.4 Communication

The energy auditor and organization shall establish communication channels and meth-

ods necessary to facilitate the audit in a timely manner. Clear lines of communication

are essential for the energy audit team, among the team and with the organization, in a

timely manner.
4.5 Roles, responsibilities and authority

The energy auditor(s) and the organization shall determine their respective roles, respon-

sibilities and authority prior to the start of the energy audit.

NOTE Annex A provides guidance on the typical roles and responsibilities during an energy

audit.
5 Performing an energy audit
5.1 General

The energy audit process consists of the following stages, as illustrated in Figure 1:

a) energy audit planning (5.2);
b) opening meeting (5.3) and data collection (5.4);
c) measurement plan (5.5);
d) conducting the site visit (5.6);
e) analysis (5.7);
f) energy audit reporting (5.8);
g) closing meeting (5.9).
5.2 Energy audit planning

Energy audit planning activities are essential to define the energy audit scope and the

objective(s), and to gather preliminary information from the organization.

In order to develop the energy audit scope and ensure that an effective energy audit is

conducted, the following shall apply.
a) The energy auditor and the organization shall agree on the following:
1) the energy audit scope, boundaries and objective(s);
© ISO 2014 – All rights reserved
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ISO 50002:2014
Figure 1 — Energy audit process flow diagram
2) needs and expectations to achieve the audit objectives;
3) the level of detail required;

NOTE 1 Annex A provides guidance that might be useful at the planning stage, including

indicative types of audit.
4) the time period to complete the energy audit;
5) criteria for evaluating and ranking opportunities for improving energy
performance;

EXAMPLE 1 Return on investment; potential energy saving over time; life cycle costing;

incremental cost analysis for replacement with more energy efficient equipment.

NOTE 2 Opportunities for improving energy performance can include non-energy benefits.

6) time commitments and other resources from the organization;
7) relevant data to be made available prior to the start of the energy audit;

EXAMPLE 2 Drawings; plant layout; historical energy consumption; utility bills when

appropriately verified; equipment manuals and other technical documentation, including

planned measurement and/or inspections to be made during the energy audit.
8) expected deliverables and report format;

9) whether a draft of the final report should be presented to the organization for

comment;
10) the organization’s representative responsible for the energy audit process;
11) the process for agreeing on any change in the energy audit scope.

b) The energy auditor shall request information to establish the energy audit context,

including, as applicable:
1) regulatory requirements or other variables affecting the energy audit;
2) regulatory or other constraints affecting the scope or other aspects of the
proposed energy audit;
3) strategic plans that may affect the organization’s energy performance;
EXAMPLE 3 Asset management plans; changing product mix; expansion plans; planned
projects; outsourcing facilities management or equipment maintenance.
© ISO 2014 – All rights reserved
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ISO 50002:2014
4) management systems, such as environmental, quality, energy management or
others;
5) factors or special considerations that may change the energy audit scope,
process and conclusions;

6) any considerations, even subjective ones, including existing opinions, ideas and

restrictions relating to potential energy performance improvement measures.
c) The energy auditor shall inform the organization of:
1) facilities, equipment and services required to enable the energy audit to be
carried out;
2) commercial or other interest which could influence his or her conclusions or
recommendations;
3) any other conflict of interest issues.
5.3 Opening meeting

The purpose of the opening meeting is for the energy auditor to brief interested par-

ties regarding the energy audit objectives, defined energy audit scope, boundaries and

methods, and to review the arrangements for the energy audit (e.g. site safety inductions,

access, security, etc.).

NOTE 1 A meeting can include telephone calls, teleconferencing and other electronic methods.

a) The energy auditor shall request the organization to:
1) assign personnel to assist the energy auditor, or appropriate individuals
constituted as a team for the purpose: these individuals shall have the
necessary competences and authority to request or carry out direct operations
on processes and equipment, support the defined energy audit scope and
objectives;
2) inform the appropriate personnel and other interested parties about the
energy audit, their roles, responsibilities, cooperation and any requirements
placed on them;
3) ensure the cooperation of the affected parties;
4) confirm any unusual conditions that may affect the energy audit or energy
performance, i.e. maintenance work, special visits (customer, regulatory, etc.),
significant changes in production volumes and others.
Where the energy auditor is not an individual, a member of the energy auditing
team shall be nominated as lead energy auditor.

NOTE 2 Some of these requirements might already have been addressed at an earlier stage.

b) The energy auditor shall agree with the organization on:

1) arrangements for access, as required by the defined energy audit scope for the

energy auditor;
2) requirements for health, safety, security and emergency rules and procedures;
© ISO 2014 – All rights reserved
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ISO 50002:2014
3) availability of resources, including energy data and the need for additional
metering;
4) applicable non-disclosure agreements (e.g. tenants in a building);
5) requirements for any special measurements, if needed;
6) procedures to be followed for installation of measuring equipment, if needed.
The energy auditor shall review the details of the energy audit planning with

the organization, including schedules, processes, the possible need for additional

metering equipment, interviewing the organization’s personnel, meetings, site
visits, etc.
5.4 Data collection

Where available, the energy auditor shall collect, collate and record the appropriate

energy data that support the audit objectives. This includes the following information:

a) a list of energy consuming systems, processes an
...

SLOVENSKI STANDARD
SIST ISO 50002:2017
01-april-2017
Energetske presoje - Zahteve z navodili za uporabo
Energy audits - Requirements with guidance for use
Audits énergétiques - Exigences et recommandations de mise en oeuvre
Ta slovenski standard je istoveten z: ISO 50002:2014
ICS:
03.100.70 Sistemi vodenja Management systems
27.015 (QHUJLMVNDXþLQNRYLWRVW Energy efficiency. Energy
2KUDQMDQMHHQHUJLMHQD conservation in general
VSORãQR
SIST ISO 50002:2017 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST ISO 50002:2017
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SIST ISO 50002:2017
INTERNATIONAL ISO
STANDARD 50002
First edition
2014-07-01
Energy audits — Requirements with
guidance for use
Audits énergétiques — Exigences et recommandations de mise en
oeuvre
Reference number
ISO 50002:2014(E)
ISO 2014
---------------------- Page: 3 ----------------------
SIST ISO 50002:2017
ISO 50002:2014(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2014

All rights reserved. Unless otherwise specified, 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
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland
ii © ISO 2014 – All rights reserved
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SIST ISO 50002:2017
ISO 50002:2014(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Principles ..................................................................................................................................................................................................................... 3

4.1 General ........................................................................................................................................................................................................... 3

4.2 Energy auditor ......................................................................................................................................................................................... 3

4.3 Energy audit .............................................................................................................................................................................................. 4

4.4 Communication ...................................................................................................................................................................................... 5

4.5 Roles, responsibilities and authority ................................................................................................................................... 5

5 Performing an energy audit ...................................................................................................................................................................... 5

5.1 General ........................................................................................................................................................................................................... 5

5.2 Energy audit planning ...................................................................................................................................................................... 6

5.3 Opening meeting ................................................................................................................................................................................... 7

5.4 Data collection ......................................................................................................................................................................................... 8

5.5 Measurement plan ............................................................................................................................................................................... 8

5.6 Conducting the site visit ......... ......................................................................................................................................................... 9

5.7 Analysis.......................................................................................................................................................................................................10

5.8 Energy audit reporting ..................................................................................................................................................................12

5.9 Closing meeting ...................................................................................................................................................................................13

Annex A (informative) Guidance on the use of this International Standard ............................................................14

Bibliography .............................................................................................................................................................................................................................22

© ISO 2014 – All rights reserved iii
---------------------- Page: 5 ----------------------
SIST ISO 50002:2017
ISO 50002:2014(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 on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers

to Trade (TBT) see the following URL: Foreword - Supplementary information

The committee responsible for this document is Technical Committee ISO/TC 242, Energy management.

iv © ISO 2014 – All rights reserved
---------------------- Page: 6 ----------------------
SIST ISO 50002:2017
ISO 50002:2014(E)
Introduction

The purpose of this International Standard is to define the minimum set of requirements leading to the

identification of opportunities for the improvement of energy performance.

An energy audit comprises a detailed analysis of the energy performance of an organization, equipment,

system(s) or process(es). It is based on appropriate measurement and observation of energy use, energy

efficiency and consumption. Energy audits are planned and conducted as part of the identification

and prioritization of opportunities to improve energy performance, reduce energy waste and obtain

related environmental benefits. Audit outputs include information on current use and performance and

they provide ranked recommendations for improvement in terms of energy performance and financial

benefits.

An energy audit can support an energy review and can facilitate monitoring, measurement and analysis

as described in ISO 50001, or it can be used independently.

This International Standard allows for differences in approach and in terms of scope, boundary and

audit objective and seeks to harmonize common aspects of energy auditing in order to enhance clarity

and transparency.

The energy audit process is presented as a simple chronological sequence, but this does not preclude

repeated iterations of certain steps.

The main body of this International Standard covers the general requirements and framework common

to all energy audits that can be supplemented by equivalent national audit standards. For auditing of

specific types of facilities, processes or equipment, refer to the relevant international, national and local

standards and guidelines, some of which are referenced in the Bibliography.
In this International Standard, the following verbal forms are used:
— “shall” indicates a requirement;
— “should” indicates a recommendation;
— “may” indicates a permission;
— “can” indicates a possibility or a capacity.
© ISO 2014 – All rights reserved v
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SIST ISO 50002:2017
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SIST ISO 50002:2017
INTERNATIONAL STANDARD ISO 50002:2014(E)
Energy audits — Requirements with guidance for use
1 Scope

This International Standard specifies the process requirements for carrying out an energy audit in

relation to energy performance. It is applicable to all types of establishments and organizations, and all

forms of energy and energy use.

This International Standard specifies the principles of carrying out energy audits, requirements for the

common processes during energy audits, and deliverables for energy audits.

This International Standard does not address the requirements for selection and evaluation of

the competence of bodies providing energy audit services, and it does not cover the auditing of an

organization’s energy management system, as these are described in ISO 50003.

This International Standard also provides informative guidance on its use (see Annex A).

2 Normative references
There are no normative references.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
audit objective

purpose of an energy audit (3.3) agreed between the organization (3.13) and the energy auditor (3.5)

3.2
boundary

physical or site limits and/or organizational limits as defined by the organization (3.13)

Note 1 to entry: The boundary of an energy management system can be different from the boundary of an energy

audit (3.3).
Note 2 to entry: The energy audit can include one or more boundaries.

EXAMPLE The whole site and all energy using systems; the boiler plant; the vehicle fleet.

3.3
energy audit

systematic analysis of energy use (3.12) and energy consumption (3.7) within a defined energy audit scope

(3.4), in order to identify, quantify and report on the opportunities for improved energy performance

(3.10)

Note 1 to entry: “Energy audit” is the normal expression in English. There are other expressions for the same

concept, e.g. “diagnosi” in Italian and “diagnostic” in French.
3.4
energy audit scope

extent of energy uses (3.12) and related activities to be included in the energy audit (3.3), as defined by the

organization (3.13) in consultation with the energy auditor (3.5), which can include several boundaries

EXAMPLE Organization, facility/facilities, equipment, system(s) and process(es).
© ISO 2014 – All rights reserved 1
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SIST ISO 50002:2017
ISO 50002:2014(E)
Note 1 to entry: The energy audit scope can include energy related to transport.
3.5
energy auditor
individual, or team of people, conducting an energy audit (3.3)

Note 1 to entry: Energy audits can be conducted by the organization (3.13) using internal resources or external

resources, such as energy consultants and energy service companies.

Note 2 to entry: An energy auditor, whether internal or external, needs to work with internal personnel relevant

to the defined energy audit scope (3.4).

[SOURCE: EN 16247-1:2012, 3.2, modified — The expression “group of people or body” has been deleted

and substituted by “or team of people”.]
3.6
energy balance

accounting of inputs and/or generation of energy supply versus energy outputs based on energy

consumption (3.7) by energy use (3.12)

Note 1 to entry: Energy storage is considered within energy supply or energy use. If included in the energy audit

scope (3.4), an energy balance needs to include energy storage and feedstock variation, as well as wasted energy,

or energy content in material flows.

Note 2 to entry: An energy balance reconciles all energy, goods and products that enter the system boundary (3.2)

against the energy, goods and products leaving the system boundary.
3.7
energy consumption
quantity of energy applied
[SOURCE: ISO 50001:2011, 3.7]
3.8
energy efficiency

ratio or other quantitative relationship between an output of performance, service, goods or energy, and

an input of energy

EXAMPLE Conversion efficiency; energy required/energy used; output/input; theoretical energy used to

operate/energy used to operate.

Note 1 to entry: Both input and output need to be clearly specified in quantity and quality, and be measurable.

[SOURCE: ISO 50001:2011, 3.8]
3.9
energy flow

description or mapping of processes for transfer of energy or conversion of energy within the defined

energy audit scope (3.4)
3.10
energy performance

measurable results related to energy efficiency (3.8), energy use (3.12) and energy consumption (3.7)

[SOURCE: ISO 50001:2011, 3.12, modified — Notes 1 and 2 have been deleted as they are specific to

energy management.]
3.11
energy performance indicator
EnPI

quantitative value or measure of energy performance (3.10), as defined by the organization (3.13)

Note 1 to entry: EnPIs could be expressed as a simple metric, ratio or a more complex model.

2 © ISO 2014 – All rights reserved
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SIST ISO 50002:2017
ISO 50002:2014(E)
[SOURCE: ISO 50001:2011, 3.13]
3.12
energy use
manner or kind of application of energy

EXAMPLE Ventilation; lighting; heating; cooling; transportation; processes; production lines.

[SOURCE: ISO 50001:2011, 3.18]
3.13
organization

company, corporation, firm, enterprise, authority or institution, or part or combination thereof, whether

incorporated or not, public or private, that has its own functions and administration and that has the

authority to control its energy use (3.12) and consumption
Note 1 to entry: An organization can be a person or a group of people.
[SOURCE: ISO 50001:2011, 3.22]
3.14
relevant variable
quantifiable parameter impacting energy consumption (3.7)

EXAMPLE Ambient weather indicators; operating parameters (indoor temperature, light level); working

hours; production throughput.
4 Principles
4.1 General

An energy audit is characterized by reliance on a number of principles. These principles help to make

the energy audit an effective and reliable tool in support of management decisions and controls, by

providing information on which an organization can act in order to improve its energy performance.

Adherence to these principles provides a consistent approach to an effective energy audit that would

enable energy auditors, working independently from one another, to reach similar conclusions in similar

circumstances.

It is essential that energy auditor(s) are familiar with applicable health and safety requirements

throughout the audit process.

The organization selects the energy auditor(s) based on the expected energy audit scope, boundaries,

audit objectives and their competencies.
4.2 Energy auditor
4.2.1 Competency

Application of the following principles by the energy auditor is fundamental to the success of the energy

audit.

The energy auditor shall have the knowledge and skills necessary to complete the defined energy audit

scope. Competence can be shown by:

a) appropriate education, skills, experience and/or training considering local or national guidelines

and recommendations;

b) relevant technical skills specific to the energy uses, scope, boundaries and audit objective;

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c) knowledge of appropriate legal and other requirements;
d) familiarity with the energy uses being audited;

e) knowledge of the requirements of this International Standard, national and local energy auditing

standards;

f) (for a team member designated as lead energy auditor) having the skills to manage and provide

leadership to the energy audit team: a lead auditor should have managerial, professional and

leadership skills in order to manage a team.

NOTE 1 Where there is a single auditor, he/she is considered to be the lead auditor.

NOTE 2 Where a national or local energy auditor certification scheme, or equivalent, is available, certified

energy auditors can be considered. Some schemes can be technology specific.

NOTE 3 The energy auditor is encouraged to demonstrate continual professional development to maintain

and improve auditing knowledge, technical skills and personal attributes. Continual professional development

could be achieved through means such as attendance at meetings, seminars, conferences, technical training, work

experience, self- study, coaching, or other relevant activities.
4.2.2 Confidentiality

The confidentiality of the audit deliverables shall be agreed upon by the organization and the auditor

prior to the start of the energy audit. Energy audit information shall not be used inappropriately

for personal gain by the energy auditor, or in a manner detrimental to the legitimate interest of the

organization.

NOTE This concept includes the proper handling of sensitive or confidential information.

4.2.3 Objectivity

The energy auditor shall act independently and in an impartial manner. Conflicts of interest (personal,

financial or other) shall be identified and disclosed to the organization in a timely manner.

If the organization intends to carry out an energy audit using internal personnel, every effort should be

made to remove bias and encourage objectivity.
4.2.4 Access to equipment, resources and information

For completion of the energy audit based on the defined energy audit scope and boundaries, access is

required to:
a) the organization, facility/facilities, equipment, system(s) and process(es);

b) personnel (engineering, operations, maintenance, etc.), their equipment vendors, contractors and

others to collect information pertinent and useful to the energy audit and analysis of data;

c) other information sources, such as drawings, manuals, test reports, historical utility bill information,

monitoring and control data, electrical equipment panels and calibration records.

4.3 Energy audit
The energy audit shall be conducted according to the following principles:

a) the audit is consistent with the agreed energy audit scope, boundary and audit objective(s);

b) the measurements and observations are appropriate to the energy uses and consumption;

c) the collected energy performance data are representative of the activities, processes, equipment

and systems;
4 © ISO 2014 – All rights reserved
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ISO 50002:2014(E)

d) the used data for quantifying energy performance and identifying improvement opportunities are

consistent and unique;
e) the process of collecting, validating and analysing data is traceable;

f) the energy audit report provides energy performance improvement opportunities based on

appropriate technical and economic analysis.

NOTE Appropriate analysis is consistent with the energy audit scope and sufficiently detailed to allow for

effective decision making.
4.4 Communication

The energy auditor and organization shall establish communication channels and methods necessary

to facilitate the audit in a timely manner. Clear lines of communication are essential for the energy audit

team, among the team and with the organization, in a timely manner.
4.5 Roles, responsibilities and authority

The energy auditor(s) and the organization shall determine their respective roles, responsibilities and

authority prior to the start of the energy audit.

NOTE Annex A provides guidance on the typical roles and responsibilities during an energy audit.

5 Performing an energy audit
5.1 General

The energy audit process consists of the following stages, as illustrated in Figure 1:

a) energy audit planning (5.2);
b) opening meeting (5.3) and data collection (5.4);
c) measurement plan (5.5);
d) conducting the site visit (5.6);
e) analysis (5.7);
f) energy audit reporting (5.8);
g) closing meeting (5.9).
Figure 1 — Energy audit process flow diagram
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SIST ISO 50002:2017
ISO 50002:2014(E)
5.2 Energy audit planning

Energy audit planning activities are essential to define the energy audit scope and the objective(s), and

to gather preliminary information from the organization.

In order to develop the energy audit scope and ensure that an effective energy audit is conducted, the

following shall apply.
a) The energy auditor and the organization shall agree on the following:
1) the energy audit scope, boundaries and objective(s);
2) needs and expectations to achieve the audit objectives;
3) the level of detail required;

NOTE 1 Annex A provides guidance that might be useful at the planning stage, including indicative types

of audit.
4) the time period to complete the energy audit;

5) criteria for evaluating and ranking opportunities for improving energy performance;

EXAMPLE 1 Return on investment; potential energy saving over time; life cycle costing; incremental cost

analysis for replacement with more energy efficient equipment.

NOTE 2 Opportunities for improving energy performance can include non-energy benefits.

6) time commitments and other resources from the organization;
7) relevant data to be made available prior to the start of the energy audit;

EXAMPLE 2 Drawings; plant layout; historical energy consumption; utility bills when appropriately

verified; equipment manuals and other technical documentation, including planned measurement and/or

inspections to be made during the energy audit.
8) expected deliverables and report format;

9) whether a draft of the final report should be presented to the organization for comment;

10) the organization’s representative responsible for the energy audit process;
11) the process for agreeing on any change in the energy audit scope.

b) The energy auditor shall request information to establish the energy audit context, including, as

applicable:
1) regulatory requirements or other variables affecting the energy audit;

2) regulatory or other constraints affecting the scope or other aspects of the proposed energy

audit;
3) strategic plans that may affect the organization’s energy performance;

EXAMPLE 3 Asset management plans; changing product mix; expansion plans; planned projects;

outsourcing facilities management or equipment maintenance.

4) management systems, such as environmental, quality, energy management or others;

5) factors or special considerations that may change the energy audit scope, process and

conclusions;
6 © ISO 2014 – All rights reserved
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6) any considerations, even subjective ones, including existing opinions, ideas and restrictions

relating to potential energy performance improvement measures.
c) The energy auditor shall inform the organization of:

1) facilities, equipment and services required to enable the energy audit to be carried out;

2) commercial or other interest which could influence his or her conclusions or recommendations;

3) any other conflict of interest issues.
5.3 Opening meeting

The purpose of the opening meeting is for the energy auditor to brief interested parties regarding

the energy audit objectives, defined energy audit scope, boundaries and methods, and to review the

arrangements for the energy audit (e.g. site safety inductions, access, security, etc.).

NOTE 1 A meeting can include telephone calls, teleconferencing and other electronic methods.

a) The energy auditor shall request the organization to:

1) assign personnel to assist the energy auditor, or appropriate individuals constituted as a team

for the purpose: these individuals shall have the necessary competences and authority to

request or carry out direct operations on processes and equipment, support the defined energy

audit scope and objectives;

2) inform the appropriate personnel and other interested parties about the energy audit, their

roles, responsibilities, cooperation and any requirements placed on them;
3) ensure the cooperation of the affected parties;

4) confirm any unusual conditions that may affect the energy audit or energy performance, i.e.

maintenance work, special visits (customer, regulatory, etc.), significant changes in production

volumes and others.

Where the energy auditor is not an individual, a member of the energy auditing team shall be

nominated as lead energy auditor.

NOTE 2 Some of these requirements might already have been addressed at an earlier stage.

b) The energy auditor shall agree with the organization on:

1) arrangements for access, as required by the defined energy audit scope for the energy auditor;

2) requirements for health, safety, security and emergency rules and procedures;

3) availability of resources, including energy data and the need for additional metering;

4) applicable non-disclosure agreements (e.g. tenants in a building);
5) requirements for any special measurements, if needed;
6) procedures to be followed for installation of measuring equipment, if needed.

The energy auditor shall review the details of the energy audit planning with the organization,

including schedules, processes, the possible need for additional metering equipment, interviewing

the organization’s personnel, meetings, site visits, etc.
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ISO 50002:2014(E)
5.4 Data collection

Where available, the energy auditor shall collect, collate and record the appropriate energy data that

support the audit objectives. This includes the following information:
a) a list of energy consuming systems, processes and equipment;

b) detailed characteristics of the energy uses within the defined energy audit scope, including relevant

variables and how the organization believes they influence energy performance;
c) historical and current energy performance data, including:
1) energy consumption;
2) relevant variables;
3) relevant related measurements;

EXAMPLE 1 Power factor measurements; results from a thermographic or compressed air survey.

4) operational history and past events that could have affected energy consumption in the period

covered by the data collected;
d) monitoring equipment, configuration and analysis information;
EXAMPLE 2 Local gauges, distributed control systems, instrumentation types.

NOTE The availability of measured data can be collected and collated by an external party, e.g. a utility

company.
e) future plans that may affect energy performance;
EXAMPLE 3 Planned expansions, contractions or changes in production volume.

EXAMPLE 4 Planned changes in, or replacement of, equipment or systems that have significant energy

implications.
EXAMPLE 5 Removal or the outsourcing of facilities, equipment or systems.
f) design, operation and maintenance documents;

EXAMPLE 6 As-built drawings, equipment specification sheet; plot plan; control system data.

g) energy audits or previous studies related to energy performance;

h) current energy rate schedule(s) (or tariffs) or a reference rate (or tariff) to be used for financial

analysis;
i) other relevant economic data;
j) knowledge on how the organization manages its energy use and consumption;
k) the energ
...

SLOVENSKI SIST ISO 50002
STANDARD april 2017
Energetske presoje – Zahteve z navodili za uporabo
Energy audits – Requirements with guidance for use
Audits énergétiques – Exigences et recommandations de mise en oeuvre
ICS 03.100.70; 27.015 Referenčna oznaka
SIST ISO 50002:2017 (sl)
Nadaljevanje na straneh od 2 do 26

© 2017-11. Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega standarda ni dovoljeno.

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SIST ISO 50002 : 2017
NACIONALNI UVOD

Standard SIST ISO 50002 (sl), Energetske presoje – Zahteve z navodili za uporabo, 2017, ima status

slovenskega standarda in je istoveten mednarodnemu standardu ISO 50002 (en), Energy audits –

Requirements with guidance for use, 2014.
NACIONALNI PREDGOVOR

Mednarodni standard ISO 50002:2014 je pripravil tehnični odbor ISO/TC 301 Upravljanje in varčevanje

z energijo.

Slovenski standard SIST ISO 50002:2017 je prevod mednarodnega standarda ISO 50002:2014. V

primeru spora glede besedila slovenskega prevoda v tem standardu je odločilen izvirni mednarodni

standard v angleškem jeziku.

V Republiki Sloveniji se za izraz "energetska presoja", ki je v standardu SIST EN 16247-1:2012 definiran

v točki 3.1, uporablja tudi izraz "energetski pregled", kot je uporabljen v Energetskem zakonu (EZ-1)

(Uradni list RS, št. 17/2014) in na njegovi podlagi izdanih podzakonskih predpisih.

Odločitev za izdajo tega standarda je v februarju 2017 sprejel Strokovni svet SIST za področja

elektronike, informacijske tehnologije in telekomunikacij.
OSNOVA ZA IZDAJO STANDARDA
– privzem standarda ISO 50002:2014
OPOMBI

‒ Povsod, kjer se v besedilu standarda uporablja izraz "mednarodni standard", v SIST ISO

50002:2017 to pomeni “slovenski standard”.
‒ Nacionalni uvod in nacionalni predgovor nista sestavni del standarda.
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SIST ISO 50002 : 2017
VSEBINA Stran

Predgovor ................................................................................................................................................. 4

Uvod ......................................................................................................................................................... 5

1 Področje uporabe ................................................................................................................................. 6

2 Zveze s standardi ................................................................................................................................. 6

3 Izrazi in definicije .................................................................................................................................. 6

4 Načela................................................................................................................................................... 8

4.1 Splošno .............................................................................................................................................. 8

4.2 Energetski presojevalec .................................................................................................................... 8

4.3 Energetska presoja ............................................................................................................................ 9

4.4 Komuniciranje ................................................................................................................................. 10

4.5 Vloge, odgovornosti in pooblastila ................................................................................................... 10

5 Izvajanje energetske presoje .............................................................................................................. 10

5.1 Splošno ............................................................................................................................................ 10

5.2 Planiranje energetske presoje ......................................................................................................... 10

5.3 Uvodni sestanek .............................................................................................................................. 11

5.4 Zbiranje podatkov ............................................................................................................................ 12

5.5 Plan meritev ..................................................................................................................................... 13

5.6 Obisk mesta presoje ........................................................................................................................ 14

5.7 Analiza ............................................................................................................................................. 14

5.8 Poročanje o energetski presoji ........................................................................................................ 16

5.9 Zaključni sestanek ........................................................................................................................... 17

Dodatek A (informativni): Navodila o uporabi tega mednarodnega standarda ..................................... 18

Literatura................................................................................................................................................. 26

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SIST ISO 50002 : 2017
Predgovor

ISO (Mednarodna organizacija za standardizacijo) je svetovna zveza nacionalnih organov za standarde

(članov ISO). Mednarodne standarde po navadi pripravljajo tehnični odbori ISO. Vsak član, ki želi

delovati na določenem področju, za katero je bil ustanovljen tehnični odbor, ima pravico biti zastopan v

tem odboru. Pri delu sodelujejo tudi mednarodne vladne in nevladne organizacije, povezane z ISO. V

vseh zadevah, ki so povezane s standardizacijo na področju elektrotehnike, ISO tesno sodeluje z

Mednarodno elektrotehniško komisijo (IEC).

Postopki, uporabljeni za pripravo tega dokumenta, in postopki, predvideni za njegovo vzdrževanje, so

opisani v Direktivah ISO/IEC, 1. del. Zlasti je treba opozoriti na različna merila potrjevanja za različne

vrste dokumentov ISO. Ta dokument je bil zasnovan v skladu z uredniškimi pravili Direktiv ISO/IEC,

2. del (glej www.iso.org/directives).

Opozoriti je treba na možnost, da je lahko nekaj elementov tega mednarodnega standarda predmet

patentnih pravic. ISO ne prevzema odgovornosti za identifikacijo katerihkoli ali vseh takih patentnih pravic.

Podrobnosti o morebitnih patentnih pravicah, prepoznanih med pripravo tega dokumenta, bodo

navedene v uvodu in/ali na seznamu ISO s prejetimi patentnimi izjavami (glej www.iso.org/patents).

Vsakršno tržno ime, uporabljeno v tem dokumentu, je informacija za uporabnike in ne pomeni podpore

blagovni znamki.

Za razlago pomena specifičnih izrazov ISO, povezanih z ugotavljanjem skladnosti, ter informacij o tem,

kako ISO spoštuje načela Mednarodne trgovinske organizacije (WTO) v Tehničnih ovirah pri trgovanju,

glej naslednji naslov URL: Foreword - Supplementary information.

Odbor, ki je odgovoren za ta dokument, je tehnični odbor ISO/TC 242 Upravljanje z energijo.

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SIST ISO 50002 : 2017
Uvod

Namen tega mednarodnega standarda je opredeliti minimalni sklop zahtev, ki bi se uporabljale za

identificiranje možnosti za izboljšanje energetske učinkovitosti.

Energetska presoja vključuje podrobno analizo energetske učinkovitosti organizacije, opreme, siste-

ma(-ov) ali procesa(-ov). Temelji na ustreznem merjenju in opazovanju rabe energije, energijske

učinkovitosti in porabe. Energetske presoje se planirajo in izvajajo kot del identificiranja in prednostnega

razvrščanja možnosti za izboljšanje energetske učinkovitosti, zmanjšanje energetske potratnosti in za

zagotavljanje povezanih okoljskih koristi. Rezultati presoj vključujejo informacije o trenutni rabi in

učinkovitosti ter zagotavljajo rangirana priporočila za izboljšanje energetske učinkovitosti in finančnih

koristi.

Energetska presoja je lahko del energetskega pregleda ter lahko poenostavi nadzorovanje, merjenje in

analizo, kot je opisano v standardu ISO 50001, ali pa se lahko uporablja samostojno.

Ta mednarodni standard dovoljuje razlike v pristopu in glede obsega, mej in ciljev presoje ter uveljavlja

usklajene skupne vidike energetskega presojanja za večjo jasnost in transparentnost.

Postopek energetske presoje je predstavljen kot preprosto kronološko zaporedje, vendar to ne izključuje

ponovitev posameznih korakov.

Glavni del tega mednarodnega standarda zajema splošne zahteve in skupni okvir za vse energetske

presoje, ki jih je mogoče nadomestiti z enakovrednimi nacionalnimi standardi o presoji. Za presojanje

posebnih vrst obratov, procesov ali opreme glej ustrezne mednarodne, nacionalne in lokalne standarde

in smernice; sklici na nekatere od njih so zbrani v poglavju Literatura.
V tem mednarodnem standardu so uporabljene naslednje glagolske oblike:
— "morati, je treba" pomeni zahtevo;
— "naj" pomeni priporočilo;
— "lahko" pomeni dovoljenje;
— "je mogoče" pomeni možnost ali sposobnost.
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SIST ISO 50002 : 2017
Energetske presoje – Zahteve z navodili za uporabo
1 Področje uporabe

Ta mednarodni standard določa zahteve za proces izvajanja energetske presoje v zvezi z energetsko

učinkovitostjo. Uporablja se lahko v vseh vrstah ustanov in organizacij ter za vse oblike in rabe energije.

Ta mednarodni standard določa načela za izvajanje energetskih presoj, zahteve za skupne procese

med energetskimi presojami in rezultate energetskih presoj.

Ta mednarodni standard ne obravnava zahtev za izbor in vrednotenje kompetentnosti organov, ki

izvajajo storitve energetske presoje, in ne zajema presojanja sistema organizacije za upravljanje z

energijo, ker so te zahteve opisane v ISO 50003.

Ta mednarodni standard podaja tudi informativna navodila za njegovo uporabo (glej dodatek A).

2 Zveze s standardi
Ta dokument ne vsebuje zvez s standardi.
3 Izrazi in definicije
V tem dokumentu se uporabljajo naslednji izrazi in definicije.
3.1
cilj presoje

namen energetske presoje (3.3), za katerega se dogovorita organizacija (3.13) in energetski

presojevalec (3.5)
3.2
meja

fizične ali lokacijske in/ali organizacijske meje, kot jih opredeli organizacija (3.13)

OPOMBA 1: Meja sistema za upravljanje z energijo se lahko razlikuje od meje energetske presoje (3.3).

OPOMBA 2: Energetska presoja lahko vključuje eno ali več mej.

PRIMER: Celotno mesto in vsi sistemi, ki uporabljajo energijo; kotlovnica; vozni park.

3.3
energetska presoja

sistematična analiza rabe energije (3.12) in porabe energije (3.7) znotraj opredeljenega obsega

energetske presoje (3.4) za prepoznavanje in kvantifikacijo možnosti za izboljšanje energetske

učinkovitosti (3.10) ter poročanje o njih

OPOMBA 1: "Energetska presoja" je običajen izraz v slovenščini. Za isti koncept obstajajo drugi izrazi, npr. “diagnosi” v

italijanščini in “diagnostic” v francoščini.
3.4
obseg energetske presoje

obseg rabe energije (3.12) in sorodnih aktivnosti, vključenih v energetsko presojo (3.3), kot to opredeli

organizacija (3.13) po posvetovanju z energetskim presojevalcem (3.5), ki lahko zajema več meja

PRIMER: Organizacija, obrat/obrati, oprema, sistemi in postopek(-ki).

OPOMBA 1: Obseg energetske presoje lahko vključuje energijo, povezano s transportom.

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SIST ISO 50002 : 2017
3.5
energetski presojevalec
posameznik ali skupina ljudi, ki izvajajo energetsko presojo (3.3)

OPOMBA 1: Energetske presoje lahko izvaja organizacija (3.13) s pomočjo notranjih ali zunanjih virov, kot so energetski

svetovalci in podjetja za energetske storitve.

OPOMBA 2: Energetski presojevalec, notranji ali zunanji, mora sodelovati z notranjim osebjem, ki ima pomembno vlogo

pri opredeljenem obsegu energetske presoje (3.4).

[VIR: EN 16247-1:2012, 3.2, spremenjen – izraz "skupina ljudi ali organ" je bil zbrisan in zamenjan z "ali

skupina ljudi".]
3.6
energetska bilanca

knjiženje vhodne in/ali proizvedene energije ter učinkov energije na podlagi porabe energije (3.7), ki je

posledica rabe energije (3.12)

OPOMBA 1: Shranjena energija se upošteva kot vir energije ali raba energije. Če je vključena v obseg energetske

presoje (3.4), mora energetska bilanca vključevati shranjeno energijo in vire energije iz surovin ter izgubo

energije ali vsebnost energije v materialnih tokovih.

OPOMBA 2: Energetska bilanca uskladi vso energijo, blago in proizvode, ki vstopijo v mejo (3.2) sistema, z vso energijo,

blagom in izdelki, ki izstopijo iz meje sistema.
3.7
poraba energije
količina uporabljene energije
[VIR: ISO 50001:2011, 3.7]
3.8
energetska učinkovitost

razmerje ali drug količinski odnos med učinkom delovanja, storitve, blaga ali energije in vloženo energijo

PRIMER: Učinkovitost konverzije, potrebna/uporabljena energija, učinek/vložek, teoretična energija, uporabljena za

delovanje/energija, uporabljena za delovanje.

OPOMBA 1: Tako vložek kot učinek morata biti jasno količinsko in kakovostno opredeljena in merljiva.

[VIR: ISO 50001:2011, 3.8]
3.9
energijski tok

opis ali preslikava postopkov za prenos ali pretvorbo energije znotraj opredeljenega obsega energetske

presoje (3.4)
3.10
energetska učinkovitost

merljivi rezultati, povezani z energijsko učinkovitostjo (3.8), rabo energije (3.12) in porabo energije (3.7)

[VIR: ISO 50001:2011, 3.12, spremenjen – opombi 1 in 2 sta zbrisani, ker sta specifični za upravljanje

z energijo.]
3.11
kazalnik energetske učinkovitosti
EnPI

količinska vrednost ali merilo energetske učinkovitosti (3.10), ki ga določi organizacija (3.13)

OPOMBA 1: Kazalniki energetske učinkovitosti so lahko izraženi metrično, kot razmerje ali s kompleksnejšim modelom.

[VIR: ISO 50001:2011, 3.13]
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SIST ISO 50002 : 2017
3.12
raba energije
način ali vrsta uporabe energije

PRIMER: Prezračevanje; razsvetljava; ogrevanje; hlajenje; prevoz; procesi; proizvodne linije.

[VIR: ISO 50001:2011, 3.18]
3.13
organizacija

družba, korporacija, firma, podjetje, organ oblasti ali ustanova ali njihov del ali njihova kombinacija, ki je

lahko registrirana ali ne, javna ali zasebna, ki ima svoje lastne funkcije in upravo s pooblastilom, da

nadzoruje rabo energije (3.12) in njeno porabo
OPOMBA 1: Organizacija je lahko ena oseba ali skupina ljudi.
[VIR: ISO 50001:2011, 3.22]
3.14
pomembna spremenljivka
merljiv parameter, ki vpliva na porabo energije (3.7)

PRIMER: Kazalniki vremenskih razmer, delovni parametri (notranja temperatura, nivo osvetljenosti), delovni čas,

proizvodna zmogljivost.
4 Načela
4.1 Splošno

Za energetsko presojo je značilno zanašanje na številna načela. S pomočjo teh načel postane

energetska presoja uspešno in zanesljivo orodje v podporo odločitvam upravljanja in nadzora, saj

priskrbi informacije, na podlagi katerih lahko organizacija sprejme ukrepe za izboljšanje svoje

energetske učinkovitosti.

Upoštevanje teh načel zagotavlja dosleden pristop k uspešni energetski presoji, ki omogoča

presojevalcem, ki delujejo medsebojno neodvisno, da pridejo do podobnih ugotovitev v podobnih

okoliščinah.

Pomembno je, da je (so) energetski presojevalec(-ci) seznanjen(-i) z zdravstvenimi in varnostnimi

zahtevami, ki veljajo v celotnem postopku presoje.

Organizacija izbere energetskega(-e) presojevalca(-e) na podlagi pričakovanega obsega energetske

presoje, meja, ciljev presoje in usposobljenosti presojevalca(-ev).
4.2 Energetski presojevalec
4.2.1 Kompetentnost

Za uspešno energetsko presojo je bistvenega pomena, da energetski presojevalec upošteva naslednja

načela.

Energetski presojevalec mora imeti znanje in veščine, potrebne za izvajanje energetske presoje v

opredeljenem obsegu. Kompetentnost se lahko dokaže z:

a) ustrezno izobrazbo, veščinami, izkušnjami in/ali usposabljanjem v skladu z lokalnimi ali

nacionalnimi smernicami in priporočili,

b) ustreznimi tehničnimi veščinami, ki so specifične za rabe energije ter obseg, meje in cilj presoje,

c) poznavanjem ustreznih pravnih in drugih zahtev,
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d) poznavanjem presojanih rab energije,

e) poznavanjem zahtev tega mednarodnega standarda ter nacionalnih in lokalnih standardov o

energetski presoji,

f) (za člana skupine, ki je vodilni energetski presojevalec) veščinami za upravljanje in vodenje skupine

za energetsko presojo: vodilni presojevalec naj ima vodstvene in strokovne veščine ter veščine

vodenja, da lahko upravlja s skupino.

OPOMBA 1: Če presojo izvaja en presojevalec, se šteje, da je vodilni presojevalec.

OPOMBA 2: Če je na voljo nacionalna ali lokalna shema za certificiranje energetskih presojevalcev oziroma podoben sistem,

se lahko razmisli o najemu certificiranih energetskih presojevalcev. Nekatere sheme so lahko tehnološko

specifične.

OPOMBA 3: Energetski presojevalec naj bi izkazoval nenehen strokovni razvoj za vzdrževanje in izboljševanje svojega znanja

o presojanju, tehničnih veščin in osebnostnih lastnosti. Nenehni strokovni razvoj se lahko doseže na primer z

udeležbo na srečanjih, seminarjih in konferencah, s tehničnim usposabljanjem, delovnimi izkušnjami,

samoizobraževanjem, mentorstvom ali drugimi ustreznimi aktivnostmi.
4.2.2 Zaupnost

O zaupnosti izsledkov presoje se morata organizacija in presojevalec dogovoriti pred začetkom

energetske presoje. Energetski presojevalec ne sme uporabiti informacij o energetski presoji na

neprimeren način za osebno korist oziroma jih ne sme uporabiti na način, ki škodi legitimnemu interesu

organizacije.

OPOMBA: Ta koncept vključuje pravilno ravnanje z občutljivimi ali zaupnimi informacijami.

4.2.3 Objektivnost

Energetski presojevalec mora delovati neodvisno in nepristransko. Nasprotja interesov (osebnih,

finančnih ali drugih) je treba pravočasno prepoznati in razkriti organizaciji.

Če organizacija želi izvesti energetsko presojo z notranjim osebjem, naj to osebje na vsak način deluje

nepristransko in si prizadeva za objektivnost.
4.2.4 Dostop do opreme, virov in informacij

Za dokončanje energetske presoje na podlagi opredeljenega obsega in meja energetske presoje je

treba omogočiti dostop do:
a) organizacije, obrata/obratov, opreme, sistema(-ov) in postopkov,

b) osebja (inženirjev, operativnega osebja, vzdrževalcev itd.), prodajalcev njihove opreme, zunanjih

izvajalcev in drugih, da se zberejo ustrezne informacije, ki so uporabne za energetsko presojo in

analizo podatkov,

c) drugih virov informacij, kot so risbe, priročniki, poročila o preskusih, pretekle informacije o fiksnih

stroških, nadzorni in kontrolni podatki, plošče električne opreme in poročila o kalibraciji.

4.3 Energetska presoja
Energetsko presojo je treba izvesti skladno z naslednjimi načeli:

a) presoja je skladna z dogovorjenim obsegom energetske presoje ter mejo in ciljem(-i) presoje;

b) meritve in opažanja so ustrezni za rabe energije in porabo;

c) zbrani podatki o energetski učinkovitosti so tipični za aktivnosti, procese, opremo in sisteme;

d) uporabljeni podatki za kvantificiranje energetske učinkovitosti in prepoznavanje priložnosti za njeno

izboljšanje so dosledni in edinstveni;
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e) postopek zbiranja, validiranja in analiziranja podatkov je sledljiv;

f) poročilo o energetski presoji vključuje priložnosti za izboljšanje energetske učinkovitosti, ki temeljijo

na ustrezni tehnični in ekonomski analizi.

OPOMBA: Ustrezna analiza je skladna z obsegom energetske presoje in dovolj podrobna, da omogoča uspešno odločanje.

4.4 Komuniciranje

Energetski presojevalec in organizacija morata pravočasno vzpostaviti komunikacijske kanale in načine

komunikacije, potrebne za izvajanje presoje. Jasna in pravočasna komunikacija med člani skupine, ki

izvaja presojo, ter med njimi in organizacijo je bistvenega pomena za skupino za energetsko presojanje.

4.5 Vloge, odgovornosti in pooblastila

Energetski presojevalec(-ci) in organizacija morata(-jo) določiti svoje vloge, odgovornosti in pooblastila

pred začetkom energetske presoje.

OPOMBA: Dodatek A vsebuje navodilo o tipičnih vlogah in odgovornostih med energetsko presojo.

5 Izvajanje energetske presoje
5.1 Splošno

Proces energetske presoje je sestavljen iz naslednjih faz, kot prikazuje slika 1:

a) planiranje energetske presoje (5.2),
b) uvodni sestanek (5.3) in zbiranje podatkov (5.4),
c) plan meritev (5.5),
d) obisk mesta presoje (5.6),
e) analiza (5.7),
f) poročanje o energetski presoji (5.8),
g) zaključni sestanek (5.9).
Uvodni
sestanek
5.3
Planiranje
Obisk
Poročanje o
Plan Zaključni
energetske mesta
energetski
Analiza
meritev sestanek
presoje
presoje presoji
5.7
5.5
5.9
5.2
5.6
Zbiranje 5.8
podatkov
5.4
Slika 1: Diagram poteka procesa energetske presoje
5.2 Planiranje energetske presoje

Aktivnosti planiranja energetske presoje so bistvene za opredelitev obsega in ciljev energetske presoje

ter za pridobivanje predhodnih informacij od organizacije.

Za določanje obsega energetske presoje in zagotavljanje uspešne energetske presoje je treba

upoštevati naslednje.
a) Energetski presojevalec in organizacija se morata dogovorita o naslednjem:
1) obsegu, mejah in cilju(-ih) energetske presoje,
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2) potrebah in pričakovanjih za doseganje ciljev presoje,
3) zahtevani temeljitosti presoje,

OPOMBA 1: Dodatek A vsebuje navodilo, ki je lahko uporabno v fazi planiranja, vključno z indikativnimi vrstami presoje.

4) časovnem okviru za izvedbo energetske presoje,

5) merilih za vrednotenje in razvrščanje priložnosti za izboljšanje energetske učinkovitosti,

PRIMER 1: Donosnost naložbe; možen prihranek energije v daljšem časovnem obdobju; stroški življenjskega cikla;

analiza povečanja stroškov pri zamenjavi opreme za energijsko učinkovitejšo opremo.

OPOMBA 2: Priložnosti za izboljšanje energetske učinkovitosti lahko vključujejo koristi, ki niso povezane z energijo.

6) časovnih obvezah in drugih virih organizacije,

7) ustreznih podatkih, ki jih je treba razkriti pred začetkom energetske presoje,

PRIMER 2: Risbe, postavitev obrata, podatki o pretekli porabi energije, fiksni stroški, če so ustrezno preverjeni,

priročniki za opremo in druga tehnična dokumentacija, vključno s planiranimi meritvami in/ali nadzori med

energetsko presojo.
8) pričakovanih rezultatih in obliki poročila,
9) ali naj se organizaciji predloži osnutek končnega poročila, da ga komentira,
10) predstavniku organizacije, ki bo odgovoren za proces energetske presoje,
11) procesu za dogovarjanje o spremembah obsega energetske presoje.

b) Energetski presojevalec mora zahtevati informacije za oblikovanje konteksta energetske presoje,

pri čemer te informacije po potrebi vključujejo:

1) zakonodajne zahteve ali druge spremenljivke, ki vplivajo na energetsko presojo,

2) zakonodajne ali druge omejitve, ki vplivajo na obseg ali druge vidike predlagane energetske

presoje,
3) strateške načrte, ki lahko vplivajo na energetsko učinkovitost organizacije,

PRIMER 3: Plani za upravljanje sredstev, zamenjava proizvodov, načrti za širitev, načrtovani projekti, predajanje

upravljanja obratov zunanjim izvajalcem ali vzdrževanje opreme.

4) sisteme vodenja, kot so sistemi ravnanja z okoljem, vodenja kakovosti, upravljanja z energijo

ali drugi,

5) dejavnike ali posebne pomisleke, ki lahko spremenijo obseg, postopek in ugotovitve energetske

presoje,

6) vse obstoječe pomisleke, tudi pristranske, vključno z obstoječimi mnenji, idejami in omejitvami,

povezanimi z morebitnimi ukrepi za izboljšanje energetske učinkovitosti.
c) Energetski presojevalec mora obvestiti organizacijo o:
1) obratih, opremi in storitvah, potrebnih za izvedbo energetske presoje,

2) komercialnih ali drugih interesih, ki bi lahko vplivali na njegove ugotovitve ali priporočila,

3) kateremkoli drugem nasprotju interesov.
5.3 Uvodni sestanek

Namen uvodnega sestanka je, da energetski presojevalec seznani zainteresirane strani o ciljih

energetske presoje, opredeljenem obsegu energetske presoje, mejah in metodah ter da pregleda

priprave na energetsko presojo (npr. varnostna navodila na mestu presoje, dostop, varnost itd.).

OPOMBA 1: Sestanek lahko vključuje telefonske klice, telekonference in druge elektronske metode komunikacije.

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a) Energetski presojevalec mora od organizacije zahtevati, da:

1) dodeli osebje za pomoč energetskemu presojevalcu ali skupino, sestavljeno iz članov, primernih

za namen: ti posamezniki morajo imeti potrebne kompetence in pooblastila, da zahtevajo

izvajanje neposrednih dejavnosti na postopkih in opremi oziroma jih izvajajo sami ter podpirajo

opredeljen obseg in cilje energetske presoje;

2) obvesti ustrezno osebje in druge zainteresirane strani o energetski presoji, njihovih vlogah,

odgovornostih, sodelovanju in vseh zahtevah, ki jih bodo morali izpolniti;
3) zagotovi sodelovanje udeleženih strani;

4) potrdi vse nenavadne pogoje, ki lahko vplivajo na energetsko presojo ali energetsko

učinkovitost, npr. vzdrževalna dela, posebne obiske (stranke, regulatornih organov itd.),

pomembne spremembe v obsegu proizvodnje in drugo.

Če energetski presojevalec ni ena oseba, mora biti član skupine za energetsko presojo imenovan

za vodilnega energetskega presojevalca.
OPOMBA 2: Nekatere od teh zahtev so bile morda že izpolnjene v zgodnejših fazah.
b) Energetski presojevalec se mora z organizacijo dogovoriti o:

1) ureditvi dostopa, ki ga energetski presojevalec potrebuje v okviru opredeljenega obsega

energetske presoje,

2) zahtevah za zdravje, varnost in varovanje ter pravilih in postopkih v primeru sile,

3) razpoložljivosti virov, vključno z energetskimi podatki in potrebi po dodatnih meritvah,

4) veljavnih dogovorih o nerazkrivanju (npr. najemnikov v zgradbi),
5) zahtevah za posebne meritve, če so potrebne,
6) postopkih za namestitev merilne opreme, če je potrebna.

Energetski presojevalec mora z organizacijo pregledati podrobnosti plana energetske presoje,

vključno z urniki, procesi, morebitno potrebno opremo za dodatne meritve, intervjuji osebja

organizacije, sestanki, obiski mesta presoje itd.
5.4 Zbiranje podatkov

Energetski presojevalec mora zbirati, združevati in zapisati ustrezne energetske podatke, ki podpirajo

cilje presoje, če so na voljo. To vključuje naslednje informacije:
a) seznam sistemov, procesov in opreme, ki porabljajo energijo,

b) podrobne značilnosti rab energije znotraj opredeljenega obsega energetske presoje, vključno z

ustreznimi spremenljivkami in mnenjem organizacije, kako te spremenljivke vplivajo na energetsko

učinkovitost,
c) pretekle in trenutne podatke o energetski učinkovitosti, vključno s:
1) porabo energije,
2) pomembnimi spremenljivkami,
3) pomembnimi povezanimi meritvami,

PRIMER 1: Meritve faktorja moči, rezultati termografskih raziskav ali raziskav s stisnjenim zrakom.

4) zgodovino delovanja in preteklimi dogodki, ki bi lahko vplivali na porabo energije v obdobju,

zajetem z zbranimi podatki,
d) informacije o nadzorni opremi, konfiguracijah in analizah,
PRIMER 2: Lokalni merilniki, porazdeljeni nadzorni sistemi, vrste instrumentov.

OPOMBA: Razpoložljive izmerjene podatke lahko zbere in združi zunanja stranka, npr. storitveno podjetje.

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e) prihodnje načrte, ki lahko vplivajo na energetsko učinkovitost,
PRIMER 3: Planirane širitve, zmanjšanja ali spremembe v obsegu proizvodnje.

PRIMER 4: Planirane spremembe v opremi ali sistemih oziroma zamenjave slednjih, ki pomembno vplivajo na

energetsko učinkovitost.

PRIMER 5: Odstranjevanje obratov, opreme ali sistemov oziroma njihova predaja zunanjim izvajalcem.

f) dokumente o načrtovanju, delovanju in vzdrževanju,

PRIMER 6: Končne risbe, specifikacije opreme, načrti, podatki nadzornih sistemov.

g) energetske presoje ali pretekle študije, povezane z energetsko učinkovitostjo,

h) trenutne urnike cen energije (ali tarife) ali referenčno ceno (ali tarifo), ki se uporabi za finančno

analizo,
i) druge pomembne poslovne podatke,
j) informacije o tem, kako organizacija upravlja z rabo in porabo energije,
k) informacije o sistemu za distribucijo energije in njegovem upravljanju.
5.5 Plan meritev

Za vsako meritev in zbiranje podatkov na mestu presoje se morata energetski presojevalec in

organizacija dogovoriti v planu meritev. Na podlagi ugotovitev energetskega presojevalca med

energetsko presojo se plan meritev lahko revidira. Glavni elementi, ki morajo biti vključeni v plan meritev,

so:

a) seznam relevantnih merilnih točk ter z njimi povezanih procesov in merilne opreme,

b) identifikacija dodatnih merilnih točk, primerne merilne opreme, z njimi povezanih procesov in

izvedljivosti namestitve,
c) točnost in ponovljivost, zahtevani za meritve, ter merilna negotovost,
d) trajanje in pogostost za vsako meritev, tj. posamezne podatkovne t
...