ISO INTERNATIONAL STANDARD 16745-1 First edition 2017-05 Sustainability in buildings and civil engineering works Carbon metric of an existing building during use stage Part 1: Calculation, reporting and communication Developpement durable dans les batiments et les ouvrages de génie civil - Métrique du carbone des batiments existants pendant la phase opérationnelle- Partie 1: Calculs, rapports et communication Reference number ISO 16745-1:2017(E) [so International Organization for Standardization @ IS0 2017 ed without license from IHS IS0 16745-1:2017(E) COPYRIGHT PROTECTED DOCUMENT IS0 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. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Licensee-ZHEJIANG INST OF STANDARDIZAISQ 07 - All rights reserVed networking permited without license from IHS IS0 16745-1:2017(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions ..2 4 Principles .5 4.1 General .5 4.2 Completeness .5 4.3 Consistency ..5 4.4 Relevance. .6 4.5 Coherence .6 4.6 Accuracy.. ..6 4.7 Transparency .6 4.8 Avoidance of double counting. ..6 5 Protocol of measuring the carbon metric of a building in the use stage ..6 5.1 System boundary ..6 5.1.1 Types of carbon metrics of a building ..6 5.1.2 System boundary for the carbon metrics of a building ..7 5.2 Carbon metric and carbon intensity. .10 5.3 Calculation of GHG emissions.. ..10 5.3.1 GHG emissions associated with energy use of a building ..10 5.3.2 Measurement of energy carrier ..10 5.3.3 Exported energy .11 5.3.4 Energyusage ..11 5.3.5 GHG emission coefficients ..12 6 Reporting and communication of the carbon metric ..14 6.1 General ..14 6.2 Reporting of the carbon metric ..14 6.2.1 Mandatory requirements ..14 6.2.2 Additional information. .18 6.3 Communication of the carbon metric. .19 6.3.1 Type of communication 19 6.3.2 Provision of information 20 6.3.3 Availability of information 21 6.3.4 Carbon metric disclosure report 21 6.3.5 Explanatory material. .22 Annex A (informative) Aim of carbon metric ..23 Annex B (informative) Building energy use defined by usage by Is0 12655 ...24. Annex C (informative) Types of factors or coefficients by Is0 16346 ..27 Annex D (informative) Allocation of emissions related to target energy in combined heat and power generation by VDI 4660 Part 2. .28 Annex E (informative) Status of Is0 16745 and other documents and concepts related to the description and assessment of greenhouse gas emissions caused by buildings. .35 Bibliography .38 ii icensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 ed without license from IHS Not for Resale, 2017/8/21 01:24:17