Perspective: Performance Loss Rate in Photovoltaic Systems

Deceglie, Michael G.; Anderson, Kevin; Fregosi, Daniel; Hobbs, William B.; Mikofski, Mark A.; Theristis, Marios; Meyers, Bennet E.

doi:10.1002/solr.202300196

Perspective: Performance Loss Rate in Photovoltaic Systems

Journal Article · Wed Jun 28 00:00:00 EDT 2023 · Solar RRL

DOI:https://doi.org/10.1002/solr.202300196· OSTI ID:1987571

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National Renewable Energy Laboratory 80401 Golden CO USA
Electric Power Research Institute Palo Alto 94304 CA USA
Southern Company Birmingham 35203 AL USA
DNV Energy Oakland 94612 CA USA
Sandia National Laboratories Albuquerque 87185 NM USA
SLAC National Accelerator Laboratory Menlo Park 94025 CA USA

Photovoltaic systems may underperform expectations for several reasons, including inaccurate initial estimates, suboptimal operations and maintenance, or component degradation. Accurate assessment of these loss factors aids in addressing root causes of underperformance and in realizing accurate expectations and models. The performance loss rate (PLR) is a commonly cited high‐level metric for the change in system output over time, but there is no precise, standard definition. Herein, an annualized definition of PLR that is inclusive of all loss factors and that can capture nonlinear changes to performance over time is proposed. The importance of distinguishing between recoverable and nonrecoverable losses which underly PLR is highlighted.

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC36-08GO28308; NA0003525

OSTI ID:: 1987571

Alternate ID(s):: OSTI ID: 2311554
OSTI ID: 1992506
OSTI ID: 1993640

Journal Information:: Solar RRL, Journal Name: Solar RRL Journal Issue: 15 Vol. 7; ISSN 2367-198X

Publisher:: Wiley Blackwell (John Wiley & Sons)Copyright Statement

Country of Publication:: Germany

Language:: English

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Perspective: Performance Loss Rate in Photovoltaic Systems

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Perspective: Performance Loss Rate in Photovoltaic Systems

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