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Presentation Details
| A Systematic Review of Modeling Approaches for Aging Utility-Scale PV Systems Hanan Wehbi, Silvana Ovaitt, Chris Deline, Heather Mirletz, Joseph Simon, Brian Mirletz, Matthew Prilliman, Garvin Heath, Jal Desai. National Lab of the Rockies, Golden, CO, USA |
Abstract
The growing deployment of utility-scale photovoltaic (PV) systems has increased the importance of techno-economic modeling for operating PV assets to support energy yield forecasting, asset management, and financial decision-making. As more systems approach mid-life and end-of-service decision points, modeling must move beyond initial design assumptions and account for degradation, operational history, maintenance practices, repowering opportunities, and decommissioning pathways. Through a systematic literature review and an assessment of current industry practices, this work examines common modeling approaches for performance and degradation, operation and maintenance (O&M), repowering and revamping, and decommissioning and end-of-service considerations. The review highlights how technical performance, financial assumptions, insurance requirements, and regulatory constraints influence long-term decision-making for aging PV systems. Rather than proposing a single predictive model, this study synthesizes current good practices and presents a structured methodological framework for more consistent techno-economic evaluation of PV systems in operation. This work supports researchers, practitioners, and asset owners in improving assumptions, reducing uncertainty, and informing decisions related to continued operation, revamping, repowering, or decommissioning.
No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author.
No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author.