Have you performed weathering tests (UV long-term stability tests)?
The sun's rays can – in combination with heat and humidity – cause material changes and reduced efficiency over time. We therefore subject our DAS Energy modules to the most rigorous tests and simulations of adverse weather conditions. One example is artificial weathering in a laboratory xenon test chamber. This process comes from the lacquering and automotive industry and is used to test the lifetime of sheets under the influence of the sun's rays. Depending on the test standard, 1,000 to 1,600 hours in the test chamber correspond to the actual environmental and radiation exposure of five years in a temperate central European climate (ISO 16474-2) or 1-2 years in climate zones exposed to more intensive radiation, such as Florida, Arizona or the Kalahari desert (PV3929). Various parameters such as transparency, discolouration and gloss are measured upon completing the tests and compared to the initial values. DAS Energy solar modules continue to meet the test requirements even after repeated test cycles (corresponding to 50-60 years in central European or 10-12 years in high exposure climate zones). This provides you with the security of knowing that you will continue to benefit from high efficiency and energy yields after many years of use.