This study aims to assess the energy audit and environmental impact of barley production throughout its life cycle under different irrigation systems. The case study focuses on the comparison of three irrigation systems: flood (FI), sprinkler (SI) and drip (DI). Data for the study will be collected from a barley farm in a representative region. Field measurements, interviews with farmers, and literature reviews will be conducted to gather the necessary information. Life cycle assessment (LCA) methodology will be used to analyze the energy audit and environmental impacts of each irrigation system. The energy audit will analyze the energy inputs and outputs at each stage of barley production, including land preparation, planting, irrigation, fertilization, pest control, harvesting, and transportation. The energy inputs will be quantified in terms of fossil fuel consumption, electricity usage, and other energy sources. The energy outputs will be measured in terms of barley yield and energy content. The environmental impacts assessment will consider various environmental indicators, such as greenhouse gas emissions, water consumption, soil erosion, and pesticide use. These indicators will be quantified for each irrigation system to determine their environmental footprint. The results of this study will provide valuable insights into the energy efficiency and environmental sustainability of different irrigation systems. It will help farmers, policymakers, and stakeholders make informed decisions regarding irrigation practices and promote sustainable agriculture. The findings can also be used to identify areas for improvement and develop strategies to save energy and reduce environmental impacts in barley production.