## 1 Introduction  
Renewable energy sources are the solution for the negative environmental impact of fossil fuel combustion and the dependence on oil-producing countries. However, the dependence of renewable energy on weather conditions makes it intermittent [1, 2]. Hydrogen is an energy vector that can be coupled to renewable energy sources with many applications in residential, transportation, and industries as an energy storage. However, its efficient production and the storage persist as a problem that is necessary to solve [3]. Water electrolysis is a way to obtain pure hydrogen in combination with renewable energy such as photovoltaic or wind energy. Anion exchange membrane water electrolyzers (AEMWE) is a technology that starts to be available in the electrolyzer market. Recently, AEMWE has attracted much attention due to its advantages in comparison to other traditional electrolyzers, e.g., alkaline water electrolyzers (AWE), solid oxide electrolyzer cell (SOEC), and proton exchange membrane water electrolyzers (PEMWE) [4, 5, 6]. AEMWE combines the advantage of conventional alkaline electrolysis (in terms of cost) and PEM (in terms of production capacity and purity of hydrogen), so it can become the key electrolysis technology for the future. These new designs aim at reducing ohmic overpotentials. In this way, higher current densities are achieved, thus improving electrolysis efficiency [7]. On the other hand, photovoltaic (PV) energy is an excellent and clean renewable energy source [8]. Any photovoltaic unit depends on the solar irradiation and temperature. However, due to this variation, the solar energy needs to be coupled with an energy storage unit. Nowadays, this coupling is typically performed by using a battery [9], which stores renewable energy in the form of chemical energy but with important limitations in terms of capacity and lifetime. It is useful when the solar energy is not enough for covering the electrical demand of a house, since an amount of energy is kept in the battery [10]. One interesting alternative to these conventional systems could be the use of the electrolysis-fuel cell technology so-called \"hybrid alternative energy system\" [11], which uses the excess of energy produced in a water electrolyzer to generate hydrogen. Later, hydrogen, which can be easily stored, is transformed into electricity by using a fuel cell when photovoltaic renewable energy is not available [12; 13; 14; 15]. In order to get a maximum global efficiency, the coupling between the photovoltaic panel and the electrolyzer must be performed at the maximum power point (MPP) of the photovoltaic system [16; 17]. Different strategies can be found in the available literature for the design of combined PV, electrolyzer, and fuel cell systems. A combination of empirical electrochemical relationships, thermodynamics, and heat transfer theory is used in many reports of a hybrid wind-PV system performance investigation [2; 9]. Other reports use energy-exergy and economic analyses of the hybrid solar-hydrogen renewable energy system [12; 13]. The optimization of a stand-alone photovoltaic-hydrogen supply system by a remote-telecom application has also been studied [14]. A comprehensive methodology to size, analyze, and assess PV-H\({}_{2}\) systems concerns many researchers that have written different works on the energy balance and the efficacy of the system in terms of the levels of energy stored and the loading requirements [18; 19]. The current manuscript examines the direct coupling between a PV panel and an AEMWE using the tools available in the market--for instance, the use of the commercial PV-SYST software. Nowadays, the proposed coupling (PV panel and AEMWE) is a novelty, since it is mostly carried out with PEMWE or AWE. The stack lifetime, the degradation, and the energy consumption are some advantages of AEMWE. The idea is to design a self-sufficient system for a residential application, i.e., for one-family house by a general and simple procedure that could be used elsewhere for other similar applications.