Combining Production Data Timeseries and Infrared Thermography to Assess the Impact of Thermal Signatures on Photovoltaic Yield Over Time

Aarseth, Bjørn Lupton; Nygård, Magnus Moe; Otnes, Gaute; Marstein, Erik Stensrud

doi:10.1109/jphotov.2024.3483248

IEEE J. Photovoltaics

2025

DOI: 10.1109/jphotov.2024.3483248

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Combining Production Data Timeseries and Infrared Thermography to Assess the Impact of Thermal Signatures on Photovoltaic Yield Over Time

Bjørn Lupton Aarseth,

Magnus Moe Nygård,

Gaute Otnes

et al.

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Modeling Cost-Effectiveness of Photovoltaic Module Replacement Based on Quantitative Assessment of Defect Power Loss

Lofstad-Lie,

Aarseth,

Roosloot

et al. 2024

Solar

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The degradation of solar photovoltaic (PV) modules over time, which are aggravated by defects, significantly affects the performance of utility-scale PV parks. This study presents a quantitative assessment of the power loss from module defects and evaluates the cost-effectiveness of replacing defective modules at various stages of degradation. A module test site was established in Norway with six different defects, and continuous thermographic monitoring, combined with light IV measurements and electroluminescence (EL) imaging, provides partial support for further calculations on the long-term effects of the defects. The cumulative module energy loss is calculated over a 25-year park lifespan under both Norwegian and Chilean environmental conditions, with the latter representing higher solar irradiation levels. The energy gain from replacing the defective modules at various stages of degradation is compared to the costs of replacement, both for infant-life failures and mid-life failures. It is likely not beneficial to replace minor infant-life defects of 1% power loss in low-irradiation regions like Norway. For Chilean conditions, it can be cost-effective, but primarily if the module is replaced around mid park life, which gives a larger yield when replaced with a new module. For more severe defects of 10% loss, the replacement gain is above the replacement cost for high-irradiation locations, and replacing the 33% power loss defect is cost-effective for both locations, even when discovered late in the park lifetime. It is primarily beneficial to replace mid-life defects in high-irradiation locations.

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Modeling Cost-Effectiveness of Photovoltaic Module Replacement Based on Quantitative Assessment of Defect Power Loss

Lofstad-Lie,

Aarseth,

Roosloot

et al. 2024

Solar

View full text Add to dashboard Cite

show abstract

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Combining Production Data Timeseries and Infrared Thermography to Assess the Impact of Thermal Signatures on Photovoltaic Yield Over Time

Cited by 1 publication

References 30 publications

Modeling Cost-Effectiveness of Photovoltaic Module Replacement Based on Quantitative Assessment of Defect Power Loss

Modeling Cost-Effectiveness of Photovoltaic Module Replacement Based on Quantitative Assessment of Defect Power Loss

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