Hydrogen became the most popular energy source, as the energy demand started to rise. Hydrogen is considered one of the solutions to global warming, climate change, and temperature rise. Technologies for hydrogen production are commercially available, while other technologies are still under research. This paper focuses on MATLAB/Simulink photovoltaic advanced alkaline water electrolysis at Saudi Arabian climate conditions. This model is based on an equivalent electric circuit and Faraday’s efficiency equation for photovoltaic cell and advanced alkaline electrolysis, respectively. The developed model allows the prediction of hydrogen production under different environmental conditions. Results showed that the production of hydrogen is linear to the electric current, and the maximum average amount of hydrogen produced by a 0.25 m2 electrolyzer and a 200-W photovoltaic panel is 0.033 L/min during Saudi Arabia-Dhahran summer days.