The study aimed to know the costs, returns, financial returns, and environmental returns of using solar energy as a source of electrical energy in the process of irrigating agricultural crops in Sinai, compared to electrical energy sources that operate on fossil fuels, by identifying the concepts of new and renewable energy in general and solar energy in particular in terms of the average amount of energy. Possible annual solar radiation, uses of solar energy and its role in achieving sustainable development and environmental security, problems that determine reliance on it, and proposals for solving them. Estimating the costs and revenues of using solar energy cells as an energy source in agricultural production in the study area in Sinai. Comparison to using electricity generators that operate on fossil fuels. Estimating the costs of establishing and operating Irrigation news per acre area using both solar energy cells and electricity generators as an investment project. Estimating the costs and revenues of the per-acre yield functions for agricultural production as an investment project for using both solar energy cells and electricity generators as an energy source. Estimating indicators of economic efficiency for the crop under study as an investment project. Using both solar energy cells. Electricity generators as a source of energy are the environmental returns of using solar energy in the reality of sustainable water and environmental security as an energy source in the field of agricultural production compared to using diesel electricity generator.