This study explores the configuration of a grassroot refinery integrated with petrochemical production, aiming for zero fuel oil output. Leveraging AVEVA Spiral’s advanced planning and assay tools, the project evaluates multiple scenarios to optimize crude selection, process configuration, and product yield. A Linear Programming model supports techno-economic screening of bottom-of-the-barrel upgrading technologies and petrochemical integration pathways. The methodology ensures robust decision-making through scenario analysis, financial evaluation, and configuration scoring. The outcome is a tailored, high-value configuration that maximizes profitability, operational flexibility, and alignment with sustainability goals.