IEC TS 62257-100:2022

IEC TS 62257-100 ®
Edition 1.0 2022-10
TECHNICAL
SPECIFICATION
Renewable energy off-grid systems –
Part 100: Overview of the IEC 62257 series
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IEC TS 62257-100 ®
Edition 1.0 2022-10
TECHNICAL
SPECIFICATION
Renewable energy off-grid systems –

Part 100: Overview of the IEC 62257 series

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.160 ISBN 978-2-8322-5853-8

– 2 – IEC 62257-100:2022 © IEC 2022
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 7
4 Background to renewable energy and hybrid off-grid systems . 9
4.1 General . 9
4.2 Packaged and custom renewable energy off-grid and hybrid systems . 9
4.3 Project management and tendering . 10
5 Organization and overview of the IEC 62257 series . 10
5.1 General . 10
5.2 -100 Series: Introduction and project management . 11
5.3 -200 Series: System design and installation . 12
5.4 -300 Series: Energy system components . 12
5.5 -400 Series: User equipment and appliances . 13
5.6 -500 Series: Stand-alone products and packaged kits . 13
6 Example case studies for users of this series . 14
6.1 General . 14
6.2 Example case study #1: Manufacturer of component for an off-grid wind
system . 14
6.3 Example case study #2: Certification testing lab for solar lanterns . 15
6.4 Example case study #3: Importer of solar products . 15
6.5 Example case study #4: Agency developing regional-level RFQ for school
PV systems . 15
6.6 Example case study #5: Installer of small PV systems . 15
6.7 Example case study #6: Retailer of solar lanterns and small solar kits . 16
6.8 Example case study #7: Off-grid system owners . 16
Annex A (informative) Reorganization of the IEC 62257 series . 17
Bibliography . 19

Table 1 – Subtopics within the IEC 62257 series . 7
Table 2 – Organization of main topics within IEC 62257: Renewable energy off-grid
systems . 11
Table 3 – Subtopics within the -100 series on Introduction and project management . 11
Table 4 – Subtopics within the -200 series on System design and installation . 12
Table 5 – Subtopics within the -300 series on Energy system components . 12
Table 6 – Subtopics within the -400 series on User equipment and appliances . 13
Table 7 – Subtopics within the -500 series on Stand-alone products and packaged kits . 13
Table A.1 – Look-up table for users of prior versions of IEC 62257-x documents to
potentially relevant subtopic(s) within the new IEC 62257-xxx scheme . 17

IEC 62257-100:2022 © IEC 2022 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RENEWABLE ENERGY OFF-GRID SYSTEMS –

Part 100: Overview of the IEC 62257 series

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC TS 62257-100 has been prepared by IEC technical committee 82: Solar photovoltaic energy
systems. It was developed in cooperation with other IEC technical committees and
subcommittees dealing with renewable energies and related matters, namely IEC technical
committee 21: Secondary cells and batteries, subcommittee 21A: Secondary cells and batteries
containing alkaline or other non-acid electrolytes, IEC technical committee 64: Electrical
installations and protection against electric shock, IEC technical committee 88: Wind energy
generation systems. It is a Technical Specification.
This first edition of IEC TS 62257-100 cancels and replaces the third edition of IEC TS 62257-1
issued in 2015. It constitutes a major technical revision. This new edition of the introductory
document transitions the entire series to a 3-digit numbering scheme. The overall numbering
scheme is presented, including planned topics and sub-topics, to assist in organizing future
documents and to differentiate the new documents from those under the former scheme. This
major re-organization and update of the series was determined by JWG1 to be necessary to
accommodate major advances within this subject area.
The main technical changes with regard to the previous edition’s introductory document,
IEC TS 62257-1, are as follows:

– 4 – IEC 62257-100:2022 © IEC 2022
– describe the major updates for the IEC 62257 series;
– new simplified title for the series “Renewable energy off-grid systems”, which will precede
individual part numbers;
– provide an introduction to the entire series, including the updated organization and planned
content of the IEC 62257 series;
– add example user case studies to assist various users in selecting relevant parts within the
series;
– removal of content replicated in other documents and relocation of some information to other
planned documents in this series;
– addition of general information on access to electricity;
– additional information on managing a renewable energy off-grid project including tendering;
– removal of an annex containing definitions, originally intended to cover all documents in the
series; future documents published under this new scheme will contain definitions for
individual documents within that document itself.
This technical specification should be used in conjunction with the other documents of the
IEC 62257 series, as relevant.
The text of this Technical Specification is based on the following documents:
Draft Report on voting
82/2028/DTS 82/2066/RVDTS
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Technical Specification is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 62257 series, published under the general title Renewable energy
off-grid systems, can be found on the IEC website.
Future standards in this series will carry the new general title and three-digit numbering. Titles
and numbers of existing standards in this series will be updated at the time of their next edition.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IEC 622
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