A comprehensive degradation assessment of silicon photovoltaic modules installed on a concrete base under hot and low-humidity environments: Building applications

•A comparative study for the degradation of the silicon photovoltaic modules under hot and low humidity is examined.•The degradation rate is reduced by 5.6% for the photovoltaic modules mounted on the concrete slabs.•∼ 2% loss in η is observed after damp-heat stress at 85 ℃ and 40 RH for 3200 h.•Via insertion of the concrete slab, the resistive loss of the photovoltaic module was reduced from 60% to 43%.