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[Display omitted] • PVs that can be mobilized in the north–south hemispheres is proposed for the first time. • Foldable PVs bracket is designed for easy PVs transportation. • Locations at different latitude are chosen for case study. • Results show that the mobilized PVs deployed in high latitudes has favorable performance. Due to seasonal changes, photovoltaic systems in some areas may remain idle for a long period of time. In order to improve the utilization efficiency and working hours of photovoltaic systems, this paper proposes a concept of a mobilized photovoltaic system which can be transferred between different locations. Based on this idea, a foldable and removable photovoltaic module is designed. To validate the feasibility of the proposed mobilized photovoltaic system, two cases with transferring routes between Stockholm and Rio Grande (representing high latitude regions, Case 1) and between Rabat and Cape Town (representing mid and low latitude regions, Case 2) are selected. For Case 1, the annual power generation of mobilized photovoltaic systems is 169 MWh and 195 MWh higher than that of the fixed photovoltaic systems (PVs) deployed at Stockholm and Rio Grande. For Case 2, the annual power generation of mobilized PVs are lower than that of the fixed PVs deployed at Rabat and Cape Town. In addition, the levelized cost of electricity of the mobilized photovoltaics is 0.074 $/kWh and 0.099 $/kWh lower than that of the fixed photovoltaics in Case 1. However, the levelized cost of electricity of the mobilized photovoltaics in Case 2 is 0.011 $/kWh higher that of the fixed photovoltaics. The analysis results indicate that deploying transferable PV between high latitude regions in the northern and southern hemispheres has good technical and economic benefits. [ABSTRACT FROM AUTHOR]

• Monte Carlo Analysis is applied to study the economic viability of Li-ion batteries. • The effects of ten sensitive parameters is considered. • Only the expenses and revenues generated by the battery installation are considered. • Battery specific costs and battery capacity are the most sensitive parameters. • Photovoltaic systems reduce the revenues generated by the battery. This study investigates the benefits of introducing Li-ion batteries as energy storage unit in the commercial sector by considering a representative building with a photovoltaic system. Only the costs and revenues related to the installation and operation of the battery are considered in this study. The operational strategy of the battery consists in balancing the following processes through day-ahead forecasts for both electricity consumption and photovoltaic production: shaving a targeted peak, performing price arbitrage, and increasing photovoltaic self-consumption. By reviewing the electricity price cost for commercial buildings from several companies around the world, a general electricity price structure is defined. Afterwards, a Monte Carlo Analysis is applied for three locations with different solar irradiation levels to study the impact of climate, electricity price components, and other seven sensitive parameters on the economic viability of Li-ion batteries. The Monte Carlo Analysis shows that the most sensitive parameters for the net present value are the battery capacity, the battery price, and the component of the electricity price that relates to the peak power consumption. For Stockholm, one of the investigated locations, the corresponding Pearson correlation coefficients are −0.67, −0.66, and 0.19 for the case were no photovoltaic system is installed. For the considered battery operational strategies, the current investment and annual operation costs for the Li-ion battery always lead to negative net present values independently of the location. Battery prices lower than 250 US$/kWh start to manifest positive net present values when combining peak shaving, price arbitrage, and photovoltaic self-consumption. However, the integration of a photovoltaic system leads to a reduced economic viability of the battery by reducing the revenues generated by the battery while performing peak shaving. [ABSTRACT FROM AUTHOR]