Besides the high ambient temperature, another challenge in regions with extreme climates are the high temperatures changes. In desert or tropical locations, temperature gradients of up to °40C between day and night occur quite frequently. As a PV module consists of materials with different mechanical behaviours, the high temperature gradients lead to thermomechanical stresses inside the module. Especially the cell connectors are thereby weakened. Using of pretreated and non-crimped connectors or using halfcells can reduce cell connector breaks.