###### Abstract
impacts of PV powered parking with charging station for EVs. [PERSON] [7] studied the impacts of canopying EV parking lots with PV panels. The use of the Internet of Things (IoT) and wireless sensor networks (WSN) are also evident. For example, [PERSON] [8] studied the connectionless indoor inventory tracking sensor network in logistics centers using an open-source communication protocol for monitoring and control, named Zigbee RFID (Radio Frequency Identification). The use of WSN in buildings and warehouses for temperature measurements, motion sensing in lighting and ventilation systems are also some applications with an energy-saving purpose, as discussed by studies by [PERSON] et al. [9], [PERSON] et al. [10], and [PERSON] et al. [11]. The use of renewable energy sources, mainly PVs connected to the grid and associated with batteries, were analyzed by [PERSON] et al. [12], where they discussed the advantages and the restrictions that influenced the feasibility of its implementation using modeling in an EnergyPlus environment. Along the same line, [PERSON] et al. [13] studied the use of PVs and batteries that were not connected to the grid. Concerning the use of simulation tools for the calculation of PV solutions, the use of TRNSYS can be found in the studies of [PERSON] and [PERSON] [14], linking the technical and economic variables. Additionally, [PERSON] and [PERSON] [15] used this approach to optimize a solar thermal system. The publications above-mentioned have made it possible to verify that energy efficiency studies for buildings using TRNSYS have been well addressed in academia, although the most common modeling solutions are based on theoretical constructs or prototypes. The novelty of this article remains the use of a methodology that connects TRNSYS and other programs to optimize all of the decision variables that are based on a real-life case study. During the optimizations, we approached the issue of surplus energy, which can occur with the installation of panels beside a specific number. Beyond this point, the PV economic feasibility depends on the alternatives to deal with surplus energy. There are some possible uses for the PV surplus energy, which can be analyzed from an economic point of view (not mentioning the environmental and social aspects), however, this can create quite different business autonomy effects, for example:  
* export to the grid (usually a trade-off of energy credits);
* storage in batteries
* to shift the solar energy peaks;
* to expand the business (e.g., implement electric vehicle charging stations)  
The main objectives of this study were the evaluation of the current energy consumption patterns of the logistics center facility, the identification of possible improvements by the reduction in the overall expenses and, as a result, developing a series of recommendations for potential implementation. We adopted a life cycle perspective for the power and energy analysis (detailing the modes of contracting, separate units or together) and the implementation of PVs in the last scenario aimed to improve the autonomy concerning the grid supplier. In this study, the PV surplus energy exported to the grids can be considered as a kind of storage energy solution, which will be discussed in more detail. The use of batteries was not included in the scope of this work, mainly due to cost restrictions and eventual environmental impacts. The rest of this paper is organized as follows. Section 2 includes a description of the studied facility, specification of the current situation, the methodology and the case studies; the quantitative results are shown in Section 3, Section 4 presents the discussion; and finally, our conclusions and recommendations are presented in Section 5.