DualSun panels have a product warranty of 10 years and a PV production warranty of 25 years. During the certification process, tests were performed during which the DualSun panels underwent accelerated cycles of extreme temperature and pressure to simulate ageing. Moreover, with the support of ADEME, we did additional testing for the panels that underwent even more severe testing. The results of the tests demonstrate that the DualSun panels are extremely robust and will resist extreme conditions and time. Solar panels that have passed these normative tests over 20 years ago have lasted and continue to perform. It's thus a gauge of the robustness of DualSun panels, which have undergone even more extreme testing.