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Identify, Analyse, Mitigate – Quantification of Technical Risks in PV Power Systems
M. Herz, G. Friesen, U. Jahn, M. Köntges, S. Lindig, D. Moser
PV System, Failure Rate, Risk Analysis
PV Systems Engineering, Integrated/Applied PV
Subtopic: Operation, Performance and Maintenance of PV Systems
Event: 8th World Conference on Photovoltaic Energy Conversion
Session: 4DO.4.3
1105 - 1111
ISBN: 3-936338-86-8
Paper DOI: 10.4229/WCPEC-82022-4DO.4.3
0,00 EUR
Document(s): paper, presentation


Technical risks are important criteria to consider when investing in new and existing PV installations. Quantitative knowledge of these risks is one of the key factors for the different stakeholders, such as asset managers, banks or project developers, to make reliable business decisions before and during the operation of their PV assets. Within the IEA PVPS Task 13 Expert Group, we aim to increase the knowledge on methodologies to assess technical risks and mitigation measures in terms of economic impact and effectiveness. The developed outline provides a reproducible and transparent technique to manage the complexity of risk analysis and processing in order to establish a common practice for professional risk assessment. Semi-quantitative and quantitative methodologies are introduced to assess technical risks in PV power systems and provide examples of common technical risks described and rated in the new created PV failure fact sheets (PVFS). Besides the PVFS based on expert knowledge and expert opinion, an update on the statistics of the PV failure degradation survey is given. With the knowledge acquired and data collected, the risk and cost-benefit analysis is demonstrated in a case study that shows methods for prioritizing decisions from an economic perspective and provided important results for risk managing strategies.