DuraMAT forecasts how New Photovoltaic Modules Technologies, rapid changes and rapid unpredictable changes
DuraMAT researchers conduct outdoor photoluminescence testing of installed PV modules, testing a high-throughput method of checking module health without needing to disconnect the PV system. Image courtesy of NREL.For the solar photovoltaics industry, rapid growth can produce rapid—and sometimes unpredictable—changes.
“We awarded six projects under our reliability forecasting call this year,” said Teresa Barnes, DuraMAT director and NREL researcher. “These projects are forecasting possible degradation factors like ultraviolet -induced degradation, glass fracture mechanics, and degradation mechanisms in encapsulants, as well as providing faster analysis of failure data. Drawing insights from all these areas should give us the capability to predict the long-term reliability of new module designs.
This approach is built on quantitative modeling and rapid validation, which has led to the development of a suite of open-source software and datasets on topics such as mechanical models for materials, wind loading, fracture mechanics, moisture diffusion, and irradiance—all accessible through theIn 2023, DuraMAT projects explored two other degradation mechanisms that appear to be evolving with new module designs: cell cracking and UV degradation.
DuraMAT researchers also found that UV-induced degradation appears to be a significant issue in recent modules made with high-efficiency cells. These results are important, as the increased degradation related to UV exposure in modern cell types may offset some of the gains predicted from bifacial and other high-efficiency cells. DuraMAT is starting new work to quantify this degradation in 2024.Taking the long view is the whole point of the DuraMAT Consortium.
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