Serbia’s energy-security agenda is being rebuilt around three linked questions: who controls strategic oil and gas assets, how much gas can be stored before winter, and whether large-scale storage and flexible generation can support a more volatile power system. The June energy developments show a country trying to protect short-term supply while preparing for deeper structural changes in ownership, infrastructure and generation.
The gas supply extension with Russia provides temporary breathing room. Serbia secured a three-month extension of its current gas arrangement beyond the end of June, maintaining deliveries through a period of market volatility and seasonal preparation. For households and industry, the immediate value is continuity. For the state, the more strategic issue is storage. The expansion of Banatski Dvor is expected to increase capacity from 450 million cubic metres to approximately 750 million cubic metres, strengthening Serbia’s ability to manage winter demand and supply disruption risk.
The Government is also preparing stricter certification rules for gas storage operators. The proposed regime would scrutinise ownership structures, voting rights, affiliated companies, financial standing, management independence and ultimate control, with particular attention to investors from third countries. The Energy Agency of the Republic of Serbia would manage applications, while the Energy Community Secretariat’s opinion would form part of the procedure.
This regulatory direction matters because Serbia’s gas-security policy can no longer rely only on bilateral supply arrangements. Storage, ownership transparency and operational independence are becoming part of the country’s security architecture. A storage facility is not just a physical asset; it is a commercial and geopolitical instrument. The more Serbia depends on gas for industry, district heating and future flexible generation, the more control and governance of storage become strategic.
The oil side is even more sensitive. MOL Group and the Serbian Government have signed a shareholders’ agreement that would govern NIS if MOL acquires GazpromNeft’s 56.15% stake and secures the required approvals, including from OFAC. Under the proposed arrangement, Serbia would increase its stake in NIS by 5%, while provisions would aim to maintain operations at the Pančevo refinery and keep processing volumes broadly in line with pre-sanctions levels.
The refinery is the central issue because it anchors Serbia’s fuel security. Pančevo has annual crude-processing capacity of about 4.8 million tonnes, while domestic demand is estimated at around 4 million tonnes. For Serbia, the priority is not simply the transaction price for NIS. It is whether a new ownership structure preserves domestic refining capability, keeps fuel supply stable and avoids turning the country into a more dependent importer of refined products.
At the same time, Serbia is moving toward new flexible generation. EPS and Azerbaijan’s SOCAR have formalised cooperation on a planned gas-fired power project in Niš, with a joint venture expected to advance development, construction and operation. This fits the broader regional pattern: as wind and solar grow, gas plants are being repositioned as reliability assets.
The long-term storage story is HPP Djerdap 3. The project is planned as a large-scale pumped-storage hydropower facility on the Danube, with around 2,400 MW of installed capacity and the possible integration of an additional 400 MWfrom renewable sources. Current estimates place investment at around €2.6 billion, with full completion targeted for 2038. The project requires coordination with Romania and careful assessment of impacts on Iron Gates 1 and 2, but its system value is obvious in a future electricity market dominated by renewable volatility.
Serbia’s energy-security strategy is therefore becoming more complex. It is no longer enough to secure a gas contract or extend an oil waiver. The country needs storage capacity, transparent ownership, refinery continuity, flexible generation, pumped-storage development and a grid that can absorb renewables without creating new reliability risks. Each decision now carries both commercial and geopolitical weight.
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