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6 FAQs about [Service life of solar power supply system]
Why do we need reliable service lifetime prediction of PV modules & components?
For example, reliable service lifetime predictions aid: PV module and components manu-facturers to provide more realistic warranties, PV project investors to make good financial decisions, and consumers to increase their trust in PV energy. More reliable service lifetime prediction of PV modules and components is still quite a challenge.
Are service lifetime and degradation models suitable for PV modules?
The latest scientific work shows that service lifetime and degradation models for PV modules are of specific use if they combine different modelling approaches and include know-how and modelling parameters of the most relevant degradation effects.
What is the lifetime of a PV module?
Therefore, in the manufacturers’ context, the lifetime of a PV module is often defined as the time required for a PV module to lose its initial STC power by 20% (so-called degradation limit) . For outdoor degradation evaluations, statistical methods are commonly used.
What is the end-of-life of a PV module?
An overview of potential module failures, influencing factors and effects can be found in a previous report of IEA PVPS Task 13 . End-of-life is defined differently for PV modules, depending on the specific context or issue. The end-of-life is typically dependent on the use of the PV module and the specific conditions of the PV power plant.
Why is service lifetime prediction important?
Service lifetime prediction of PV modules and components is of interest to all PV stakehold-ers. For example, reliable service lifetime predictions aid: PV module and components manu-facturers to provide more realistic warranties, PV project investors to make good financial decisions, and consumers to increase their trust in PV energy.
When does a PV system end-of-life?
Depending on the economic situation of a specific PV system, the end-of-life can be reached due to changing contractual conditions (e.g., changing electricity prices) or if it comes eco-nomically attractive to replace PV modules by new ones with higher efficiency.