The Eleusis Refinery Upgrade Project represents a major investment for HELLENiQ ENERGY (ELPE) and Greece’s energy sector. Located in Elefsina, just 20 km west from Athens and close to the Port of Piraeus, this upgrade has transformed the refinery into one of the largest and most modern in the country. The project’s goal was to enhance the production of cleaner, higher-quality fuels while implementing advanced emission control technologies to reduce environmental impact and meet European Union’s regulations. The upgrade successfully increased the refinery’s production capacity, boosting national energy security, creating new job opportunities. The Eleusis Refinery has emerged as a benchmark of technological and environmental excellence in the region.