ISO INTERNATIONAL STANDARD 17741 First edition 2016-05-01 General technical rules for measurement, calculation and verification of energy savings of projects Regles techniques generales pour la mesure, le calcul et la verification des économies d'énergie dans les projets Reference number ISO 17741:2016(E) ISO International Organization for Standardization =ZHEJIANG INST OF STANDARDIZATION C1 5956617 @IS02016 vided by IHS underI itted without license from IHS IS0 17741:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2016, 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. ISOcopyrightoffice 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 Intenationaibr PrganizationforStandardization ensee-ZHEJIANG INST.OF STANDARDIzARoISQ16- All rights reserved Not for Resale, 2016/7/20 03:23:09 etworking permitted without license from IHS IS0 17741:2016(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references ..1 3 Terms and definitions 4 Concept of energy savings of a project. .5 5 Procedure of M&V of energy savings .6 5.1 General .6 5.2 Logical relationship between the M&V and the project implementation ..6 6 Measurement & verification plan (M&V plan) .8 6.1 General .8 6.2 Boundary identification ..8 6.3 Determination of baseline period and reporting period .9 6.3.1 General. .9 6.3.2 Baseline period. .9 6.4 Calculation methods of energy savings .9 6.4.1 General .9 6.4.2 Method I: Direct comparison. .10 6.4.3 Method II: Adjusted baseline calculation .11 6.4.4 Method III: Calibrated simulation .12 6.5 Specification of data collection 14 6.6 Uncertainty. .15 6.7 Measurement & verification options (M&V options) ..17 7 Report ..17 Bibliography. .18 iii e=ZHEJIANG INSTOFSTANDARDIZATION C15956617 vided by IHS under I ithout license from IHS