The project includes the construction of a delayed coker unit, modernisation of existing units, as well as the development of a new port, storage siloes, an enclosed coke handling and transportation system, and a new high-capacity substation – the largest in Croatia – ensuring a reliable and secure power supply for the new facility. This extensive scope of technological, logistical, and safety solutions represent a comprehensive transformation of the refinery complex into one of the most technologically advanced refining facilities in the region. The present final phase of pre-commissioning testing phase involves thorough technical and safety checks, system testing, and all procedures required to obtain the operating permit and commence regular commercial production at full capacity.
Over the past year and a half, construction activities were carried out alongside uninterrupted operation of existing refinery units at full capacity, marking the longest continuous operating period of the refinery in the past 15 years. During this time, record throughput was achieved, accompanied by stable and positive refining business results. INA has simultaneously ensured reliable supply to the domestic market while creating the foundations for long-term energy independence and security of supply.
Once the new delayed coker unit is commissioned, INA will significantly increase production of diesel – by up to 30% – as well as other high-value distillates. INA’s continued focus will remain on the secure supply of Croatia and key regional markets (Bosnia and Herzegovina, Montenegro, and Slovenia). The new facility at the Rijeka refinery will substantially contribute to reliable and continuous supply, while significantly reducing the need for imports of petroleum products, primarily diesel, especially during the tourist season when demand peaks.
In addition, the production process will eliminate the need for importing vacuum gas oil (VGO), which on the European market is predominantly of Russian origin. This further strengthens energy security, reduces dependence on imported feedstocks, and enhances the overall resilience of the system.
The Rijeka refinery upgrade project represents the culmination of decade-long efforts of INA, as a MOL Group member, to modernise its refining operations. Over this period, numerous initiatives have been launched, with total investments – including this latest project – exceeding €1 billion in the refining and logistics. As a result of these enhancements, INA’s refining business has become more resilient to macroeconomic pressures and has improved its energy efficiency, ultimately delivering positive operational results.