The poultry sector in Ecuador relies heavily on non-renewable energy sources, particularly conventional electricity from the public grid. A typical poultry plant consumes an average of 57.313 MWh per year, resulting in an annual cost of USD 7100. The sheds constitute the largest portion of its energy consumption, accounting for 36% of the total. The objective of this study was to model an optimal photovoltaic system that could contribute to the energy supply of the area with the highest consumption. The aim was to reduce the operating costs and facilitate a transition in the energy matrix. To achieve this, historical and exploratory data were collected, including solar radiation levels, estimation of geographical resources, and energy consumption patterns in the business. Based on the analysis, an isolated photovoltaic system was designed. The system comprises four solar panels, eight batteries, one charge regulator, one current inverter, five types of conductors, and three types of electrical protections. The photovoltaic system was sized to meet the energy requirements of the Type A shed, which consumes 5.89 kWh, and the Type B shed, which consumes 6.59 kWh. The design considered the lower annual solar radiation values of 4.58 kWh/m², ensuring that the system could function effectively even with reduced solar input. This approach not only addresses the immediate energy needs of the poultry sector but also contributes to the broader goal of reducing dependency on non-renewable energy sources. By transitioning to photovoltaic systems, poultry plants can significantly lower their operating costs and reduce their environmental impact.