In the dynamic landscape of refinery planning, the adoption of linear programming (LP) models within AVEVA Unified Supply Chain has become pivotal for optimising processes and guiding transformation initiatives. By integrating LP frameworks, refineries and petrochemical complexes can evaluate complex scenarios, balance operational constraints, and unlock new value across project lifecycles. This approach empowers decision-makers to simulate multiple configurations, assess economic impacts, and swiftly adapt strategies in response to shifting market conditions or regulatory requirements in both greenfield and brownfield projects.