Presentation Details
| Validation of a hybrid snow-loss model Andrea Quattrone1, Mark A.Mikofski2. 1DNV, Montreal, QC, Canada.2DNV, Oakland, CA, USA |
Abstract
Snow related energy losses can significantly impact the performance of photovoltaic systems. Accurately modeling these losses is essential for the reliable financing and bankability of solar projects in snowy regions. As shown in [1], the two most used snow-loss models, Townsend and Marion, often yield significant differences depending on locations. A proposed solution is to combine the outputs from the two models and create a new hybrid model that can reduce location specific discrepancies and improve accuracy of the estimates. The main goal of this paper is to evaluate the hybrid model’s performance against measured snow losses derived from multi-year SCADA data across multiple locations in the US and Canada. Two validation approaches are examined: (i) correlating SCADA based losses with the simple average of the Townsend and Marion, and (ii) correlating SCADA based losses with a weighted average of the two models, where weights are determined by regional and/or seasonal performance differences. [1] A. Quattrone, A. Pierce, U. Zandanbal and M. A. Mikofski, "Validation of a hybrid model combining Townsend and Marion to estimate PV snow soiling losses," 2025 IEEE 53rd Photovoltaic Specialists Conference (PVSC), Montreal, QC, Canada, 2025, pp. 1532-1533, doi: 10.1109/PVSC59419.2025.11133135.
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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.
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