A common basis of understanding results from defined metrics that can be useful to the 
stakeholders, populated by data collected in the operation of the PVPS:  
a) To provide a standarized approach to characterize availablity and unavailablity for a 
PVPS. 
b) To provide standard methodologies for determining the appropriate forms of availability of 
the PVPS during varying time periods, including real-time capability assessment or longer, 
for reporting availablity metrics to stakeholders.dition 1.0 2019-05 TECHNICAL SPECIFICATION colour inside Photovoltaic power systems (PVPS) – Information model for availability IEC TS 63019:2019-05(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright ？ 2019 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, incl