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PV Module Prototyping and Accelerated Stress Testing

DuraMAT's combined-accelerated stress testing (C-AST) combines the stress factors of the natural environment in an environmental chamber, with fewer photovoltaic (PV) modules and with fewer parallel tests. It makes it possible to:

  • Discover potential, unknown weaknesses a-priori in new module designs
  • Reduce residual risk
  • Accelerate time to market and bankability
  • Reduce costly overdesign
  • Apply known degradation rate equations to estimate service life for the degradation mechanisms observed in C-AST.

Primary Capability Area

Module Prototyping and Testing


National Renewable Energy Laboratory


With our capability, we combine the environmental stress factors—including light, temperature, humidity, rain/spray, system voltage—and mechanical stress (thermo-mechanical and static loading) to reduce the number of tests, samples, and chambers required for PV module or material qualification. C-AST can, therefore, accelerate development, bankability, and commercialization of PV module innovations.


This capababilty is available to projects negotiatied with NREL scientists and external collaborators


Spataru, S.V.; Hacke, P.; Owen-Bellini, M. (2018 ). “Combined-Accelerated Stress Testing System for Photovoltaic Modules.” Proceedings of the World Conference on Photovoltaic Energy Conversion (WCPEC-7), June 10-15, 2018, Wiakoloa, Hawaii.

Owen-Bellini, M.;  Hacke, P.;  Kempe, M.; Miller, D.C.;  Spataru, S.V.; Schelhas, L.; Moffitt, S. (2018 )“Combined-Accelerated Stress Testing for Advanced Reliability Assessment of Photovoltaic Modules.” Proceedings of the 35th EU PVSEC, 24 - 28 September 2018,  Brussels.


For more information about this capability, contact Peter Hacke.

Photo of accelerated stress testing being performed on three PV module panels.