EN ISO 52000-1:2017

SLOVENSKI STANDARD
01-maj-2018
1DGRPHãþD
SIST EN 15603:2008
Energijske lastnosti stavb - Krovni standard za ocenjevanje energijskih lastnosti
stavb - 1. del: Splošni okvir in postopki (ISO 52000-1:2017)
Energy performance of buildings - Overarching EPB assessment - Part 1: General
framework and procedures (ISO 52000-1:2017)
Energieeffizienz von Gebäuden - Festlegungen zur Bewertung der Energieeffizienz von
Gebäuden - Teil 1: Allgemeiner Rahmen und Verfahren (ISO 52000-1:2017)
Performance énergétique des bâtiments - Évaluation cadre PEB - Partie 1: Cadre
général et modes opératoires (ISO 52000-1:2017)
Ta slovenski standard je istoveten z: EN ISO 52000-1:2017
ICS:
27.015 (QHUJLMVNDXþLQNRYLWRVW Energy efficiency. Energy
2KUDQMDQMHHQHUJLMHQD conservation in general
VSORãQR
91.120.10 Toplotna izolacija stavb Thermal insulation of
buildings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 52000-1
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2017
EUROPÄISCHE NORM
ICS 91.120.10 Supersedes EN 15603:2008
English Version
Energy performance of buildings - Overarching EPB
assessment - Part 1: General framework and procedures
(ISO 52000-1:2017)
Performance énergétique des bâtiments - Évaluation Energieeffizienz von Gebäuden - Festlegungen zur
cadre PEB - Partie 1: Cadre général et modes Bewertung der Energieeffizienz von Gebäuden - Teil 1:
opératoires (ISO 52000-1:2017) Allgemeiner Rahmen und Verfahren (ISO 52000-
1:2017)
This European Standard was approved by CEN on 27 February 2017.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 52000-1:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 52000-1:2017) has been prepared by Technical Committee CEN/TC 371
“Energy Performance of Buildings project group", the secretariat of which is held by NEN, in
collaboration with Technical Committee ISO/TC 163 "Thermal performance and energy use in the built
environment".
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by January 2018 and conflicting national standards shall
be withdrawn at the latest by January 2018.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 15603:2008.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 52000-1:2017 has been approved by CEN as EN ISO 52000-1:2017 without any
modification.
INTERNATIONAL ISO
STANDARD 52000-1
First edition
2017-06
Energy performance of buildings —
Overarching EPB assessment —
Part 1:
General framework and procedures
Performance énergétique des bâtiments — Évaluation cadre PEB —
Partie 1: Cadre général et modes opératoires
Reference number
ISO 52000-1:2017(E)
©
ISO 2017
ISO 52000-1:2017(E)
© ISO 2017, Published in Switzerland
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.
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Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved

ISO 52000-1:2017(E)
Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Building . 2
3.2 Indoor and outdoor conditions. 4
3.3 Technical building systems . 5
3.4 Energy . 7
3.5 Energy performance .10
3.6 Energy calculation .13
4 Symbols, subscripts and abbreviations .14
4.1 Symbols .15
4.2 Subscripts .16
4.3 Abbreviations .17
5 Description of the overarching framework and procedures .18
5.1 Output of the method .18
5.2 General description of the procedures and routing .18
5.3 Selection criteria between the methods .20
6 Overarching preparation steps .20
6.1 General .20
6.2 List of types and categories .20
6.2.1 Type of object .20
6.2.2 Building category and space categories.21
6.2.3 Type of application .21
6.2.4 Types of assessment .21
6.2.5 Building services .22
6.3 Identification of types and categories for a specific case .22
6.3.1 General.22
6.3.2 Output data .23
7 Calculated energy performance of buildings .23
7.1 Output data .23
7.2 Calculation intervals and calculation period . .24
7.2.1 Calculation interval .24
7.2.2 Calculation period . .24
7.3 Input data .25
7.3.1 Product data . .25
7.3.2 System design data . . .25
7.3.3 Operating conditions data .25
7.3.4 Constants and physical data.28
7.3.5 Other data .28
7.4 Description of the calculation procedure .28
8 Measured overall energy performance and comparison with calculations .29
8.1 General .29
8.2 Output of the method .29
8.3 Measurement intervals and measurement period .29
8.4 Input data .30
8.4.1 Product data . .30
8.4.2 System design data . . .30
8.4.3 Operating conditions data .30
8.4.4 Constants and physical data.31
ISO 52000-1:2017(E)
8.4.5 Other data .31
8.5 Measurement procedures.31
8.6 Calculation of the energy performance based on measured energy .31
8.7 Comparison between calculated energy performance and measured
energy performance .32
8.8 Measured energy performance reporting .32
9 Overall assessment of the energy performance of buildings .32
9.1 Categorization of building and/or spaces .32
9.2 Combination of building services included in EPB in each space .33
9.3 Useful floor area and air volume .34
9.4 Normalization to building size .34
9.4.1 Reference size .34
9.4.2 Normalization . .35
9.4.3 Reference floor area .35
9.5 Assessment boundary and perimeters .35
9.5.1 General principles .35
9.5.2 Assessment boundary for multiple buildings .37
9.6 Overall energy performance .37
9.6.1 Weighted overall energy balance .37
9.6.2 Primary energy factors .38
9.6.3 Greenhouse gas emission factors .39
9.6.4 Additional weighting factors .40
9.6.5 Costs factors .40
9.6.6 Weighting factors for exported energy .40
9.6.7 Energy flows .43
9.7 Share of renewable energy .43
9.8 Energy performance indicators for technical building systems .44
9.9 Calculation methods for energy performance indicators per part of a building
and/or service .44
10 Zoning .45
10.1 General .45
10.2 Thermal zones and service areas .46
10.3 Spaces .47
10.4 Zoning rules .49
10.4.1 Principle .49
10.4.2 Specific zoning criteria .49
10.5 Assignment rules .50
10.5.1 Subdivision .50
10.5.2 Recombination .53
10.6 Zoning procedure .53
11 Calculation of the energy performance, routing and energy balance .53
11.1 General .53
11.2 Overall calculation procedure (steps) .54
11.3 Calculation principles of the recovered gains and losses .54
11.3.1 General.54
11.3.2 Detailed approach .55
11.3.3 Simplified approach .56
11.4 Effect of building automation and control (BAC) and technical building
management (TBM) .56
11.5 Climatic and external environment data .57
11.6 Overall energy performance .57
11.6.1 General.57
11.6.2 Electricity and other energy carriers with exportation .57
11.6.3 Energy carriers without exportation .62
11.6.4 Exported heat produced on-site and not included in thermal use of
the building . .63
iv © ISO 2017 – All rights reserved

ISO 52000-1:2017(E)
12 Common overarching output .64
12.1 General .64
12.2 Tabulated overview of the amounts of energy per energy carrier and energy service .65
Annex A (normative) Input and method selection data sheet — Template .72
Annex B (informative) Input and method selection data sheet — Default choices .83
Annex C (normative) Common subscripts .101
Annex D (informative) Calculation of measured energy performance .110
Annex E (normative) Calculation methods for energy performance indicators per part of a
building and/or service .112
Annex F (informative) Alphabetical index of terms .119
Annex G (informative) Electrical grid related indicators .122
Annex H (informative) Proposal of indicators for the assessment of nearly Zero-Energy
Buildings (NZEB) .123
Bibliography .126
ISO 52000-1:2017(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 voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: w w w . i s o .org/ iso/ foreword .html.
ISO 52000-1 was prepared by the European Committee for Standardization (CEN) Technical Committee
CEN/TC 371, Energy Performance of Buildings project group, in collaboration with ISO Technical
Committees TC 163, Thermal performance and energy use in the built environment, and TC 205, Building
Environment Design, in accordance with the Agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
A list of all parts in the ISO 52000 series can be found on the ISO website.
[3] [2]
This document cancels and replaces ISO/TR 16344:2012 and ISO 16346:2013 .
vi © ISO 2017 – All rights reserved

ISO 52000-1:2017(E)
Introduction
This document is part of a series aimed at the international harmonization of the methodology for
assessing the energy performance of buildings. Throughout, this series is referred to as a “set of EPB
standards”.
All EPB standards follow specific rules to ensure overall consistency, unambiguity and transparency.
All EPB standards provide a certain flexibility with regard to the methods, the required input data and
references to other EPB standards, by the introduction of a normative template in Annex A and Annex B
with informative default choices.
For the correct use of this document, a normative template is given in Annex A to specify these choices.
Informative default choices are provided in Annex B.
The main target groups for this document are architects, engineers and regulators.
Use by or for regulators: In case the document is used in the context of national or regional legal
requirements, mandatory choices may be given at national or regional level for such specific
applications. These choices (either the informative default choices from Annex B or choices adapted to
national/regional needs, but in any case following the template of Annex A) can be made available as
national annex or as separate (e.g. legal) document (national data sheet).
NOTE 1 So in this case:
— the regulators will specify the choices;
— the individual user will apply the document to assess the energy performance of a building, and thereby use
the choices made by the regulators.
Topics addressed in this document can be subject to public regulation. Public regulation on the same
topics can override the default values in Annex B. Public regulation on the same topics can even, for
certain applications, override the use of this document. Legal requirements and choices are in general
not published in standards but in legal documents. In order to avoid double publications and difficult
updating of double documents, a national annex may refer to the legal texts where national choices
have been made by public authorities. Different national annexes or national data sheets are possible,
for different applications.
It is expected, if the default values, choices and references to other EPB standards in Annex B are not
followed due to national regulations, policy or traditions, that:
— national or regional authorities prepare data sheets containing the choices and national or regional
values, according to the model in Annex A. In this case a national annex (e.g. NA) is recommended,
containing a reference to these data sheets;
— or, by default, the national standards body will consider the possibility to add or include a national
annex in agreement with the template of Annex A, in accordance to the legal documents that give
national or regional values and choices.
Further target groups are parties wanting to motivate their assumptions by classifying the building
energy performance for a dedicated building stock.
[6]
More information is provided in the Technical Report accompanying this document ISO/TR 52000-2 .
The framework for overall EPB includes:
a) common terms, definitions and symbols;
b) building and assessment boundaries;
c) building partitioning into space categories;
ISO 52000-1:2017(E)
d) methodology for calculating the EPB (formulae on energy used, delivered, produced and/or
exported at the building site and nearby);
e) a set of overall formulae and input-output relations, linking the various elements relevant for the
assessment of the overall EPB;
f) general requirements for EPB dealing with partial calculations;
g) rules for the combination of different spaces into zones;
h) performance indicators;
i) methodology for measured energy performance assessment.
Table 1 shows the relative position of this document within the set of EPB standards in the context of
the modular structure as set out in ISO 52000-1.
[6]
NOTE 2 In ISO/TR 52000-2 the same table can be found, with, for each module, the numbers of the relevant
EPB standards and accompanying technical reports that are published or in preparation.
NOTE 3 The modules represent EPB standards, although one EPB standard could cover more than one module
and one module could be covered by more than one EPB standard, for instance, a simplified and a detailed method
respectively. See also Tables A.1 and B.1.
viii © ISO 2017 – All rights reserved

ISO 52000-1:2017(E)
Table 1 — Position of this document (in casu M1–1 - M1–3, M1–5, M1–7 – M1–10), within the
modular structure of the set of EPB standards
Building
Overarching Technical Building Systems
(as such)
Build
Do-
Ven- Hu- Dehu- ing auto
Sub Heat- Cool- mestic Light PV,
Descriptions Descriptions Descriptions tila- midifi- midifi- mation
module ing ing hot ing wind, .
tion cation cation and
water
control
sub1 M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11
ISO 52000-1
1 General General General
Common
terms and
definitions; Building en-
a
2 ISO 52000-1 Needs
symbols, ergy needs
units and
subscripts
(Free) Indoor
Maximum
conditions
3 Applications ISO 52000-1 load and
without
power
systems
Ways to ex- Ways to ex- Ways to ex-
4 press energy press energy press energy
performance performance performance
Building
Heat transfer
categories Emission and
5 ISO 52000-1 by transmis-
and building control
sion
boundaries
Building Heat transfer
occupancy by infiltra- Distribution
and operating tion and and control
conditions ventilation
Aggregation
of energy
Internal heat Storage and
7 services ISO 52000-1
gains control
and energy
carriers
Building Solar heat Generation
8 ISO 52000-1
zoning gains and control
NOTE  The shaded modules are not applicable.
ISO 52000-1:2017(E)
Table 1 (continued)
Building
Overarching Technical Building Systems
(as such)
Build
Do-
Ven- Hu- Dehu- ing auto
Sub Heat- Cool- mestic Light PV,
Descriptions Descriptions Descriptions tila- midifi- midifi- mation
module ing ing hot ing wind, .
tion cation cation and
water
control
sub1 M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11
Building Load dis-
Calculated
dynamics patching and
9 energy per- ISO 52000-1
(thermal operating
formance
mass) conditions
Measured Measured Measured
10 energy per- ISO 52000-1 energy per- energy per-
formance formance formance
11 Inspection Inspection Inspection
Ways to ex-
12 press indoor BMS
comfort
External
13 environment
conditions
Economic
calculation
NOTE  The shaded modules are not applicable.
x © ISO 2017 – All rights reserved

INTERNATIONAL STANDARD ISO 52000-1:2017(E)
Energy performance of buildings — Overarching EPB
assessment —
Part 1:
General framework and procedures
1 Scope
This document establishes a systematic, comprehensive and modular structure for assessing the energy
performance of new and existing buildings (EPB) in a holistic way.
It is applicable to the assessment of overall energy use of a building, by measurement or calculation,
and the calculation of energy performance in terms of primary energy or other energy-related metrics.
It takes into account the specific possibilities and limitations for the different applications, such as
building design, new buildings ‘as built’, and existing buildings in the use phase as well as renovation.
NOTE Table 1 in the Introduction shows the relative position of this document within the set of EPB
standards in the context of the modular structure as set out in this document.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 7345:1987, Thermal insulation — Physical quantities and definitions
NOTE Default references to EPB standards other than ISO 52000-1 are identified by the EPB module code
number and given in Annex A (normative template in Table A.1) and Annex B (informative default choice in
Table B.1).
EXAMPLE EPB module code number: M5–5, or M5–5.1 (if module M5–5 is subdivided), or M5–5/1 (if
reference to a specific clause of the documents covering M5–5).
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 7345:1987 and the
following apply.
Clause 3 includes terms that are not used in this document, but that are needed for overall consistency
in the EPB standards.
NOTE 1 An alphabetic list of all terms defined in this document is given in Annex F.
[6]
NOTE 2 See ISO/TR 52000-2 for explanation on the overarching terms and definitions and how possible
conflicts with national or regional (e.g., legal) specifications is avoided.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
ISO 52000-1:2017(E)
3.1 Building
3.1.1
assessed object
building, part of a building or portfolio of buildings that is the object of the energy performance
assessment
Note 1 to entry: The assessed object comprises all spaces and technical systems which may contribute to or
influence the energy performance assessment.
Note 2 to entry: The assessed object may include one or several building units, if these are not individually object
of the energy performance assessment.
Note 3 to entry: A distinction may be made between e.g. a designed building, new building after construction,
existing building in the use phase and existing building after major renovation.
3.1.2
building
construction as a whole, including the fabric and all technical building systems, where energy may be
used to condition the indoor environment, to provide domestic hot water and illumination and other
services related to the use of the building
Note 1 to entry: The term refers to the physical building as a whole, or to all parts thereof, that at least include the
spaces and technical building systems that are relevant for the energy performance assessment.
Note 2 to entry: Parts of a building can be physically detached, but are on the same building site. For example: a
canteen or a guard house or one or more classrooms of a school in a detached part of a building; or an essential
space in a dwelling (e.g., bedroom).
3.1.3
building category
unit category
classification of buildings and/or building units related to their main use or their special status, for the
purpose of enabling differentiation of the energy performance assessment procedures and/or energy
performance requirements
EXAMPLE Buildings officially protected as part of a designated environment or because of their special
architectural or historical merit, buildings used as places of worship and for religious activities, residential
buildings, (a) single-family houses of different types;(b) apartment blocks;(c) offices;(d) educational buildings;(e)
hospitals;(f) hotels and restaurants;(g) sports facilities;(h) wholesale and retail trade services buildings;(i) data
centres; (j) other types of energy-consuming buildings.
Note 1 to entry: Building regulations often make a distinction between building categories.
Note 2 to entry: The building category, for instance, may determine if energy performance assessment is
mandatory (e.g., not for religious or historic buildings) and which are the minimum energy performance
requirements (e.g., for new buildings); in some countries measured energy performance of a building is
prescribed for specific categories of buildings (e.g., apartment buildings, large public buildings), etc. Another
type of categorization is the distinction between new and existing and renovated buildings.
Note 3 to entry: Many buildings or building units of a given (use) category contain spaces of different (use)
categories; for instance an office building may contain a restaurant; see 3.1.14 definition of space category.
Note 4 to entry: The allocation of a building category may also have a strong impact on other parts of the building
regulations, for instance on safety (e.g., emergency exits, strength of floor) or indoor environmental quality (e.g.,
minimum ventilation rates).
3.1.4
building element
integral component of the technical building systems or of the fabric of a building
2 © ISO 2017 – All rights reserved

ISO 52000-1:2017(E)
3.1.5
building fabric
all physical elements of a building, excluding technical building systems
EXAMPLE Roofs, walls, floors, doors, gates and internal partitions.
Note 1 to entry: It includes elements both inside and outside of the thermal envelope, including the thermal
envelope itself.
Note 2 to entry: The fabric determines the thermal transmission, the thermal envelope airtightness and (nearly
all of) the thermal mass of the building (apart from the thermal mass of furniture and technical building
systems). The fabric also makes the building wind and water tight. The building fabric is sometimes described as
the building as such, i.e., the building without any technical building system.
3.1.6
building portfolio
set of buildings and common technical building systems whose energy performance is determined
taking into account their mutual interactions
Note 1 to entry: An example of common technical systems is an energy generation system (PV panels, wind
turbine, cogeneration unit, boiler, etc.) serving the building portfolio.
...