Serbia’s energy infrastructure reflects two eras. Its lignite power stations, coal mines and Danube hydropower plants were built for a centralized domestic system. Newer projects focus on renewable connections, cross-border trade and reducing dependence on limited oil and gas supply routes.
Serbia must keep the existing system reliable while building the networks required for a more diversified energy mix. Its central Balkan location offers strong potential as a regional energy corridor, but only if projects are completed and markets operate effectively across borders.
Coal and Hydropower Still Define the Electricity Network
Serbia had approximately 8.98 GW of installed electricity capacity in 2024 and generated about 34.7 TWh. Lignite-fired power stations provided the largest share of output, while hydropower supplied most of the remaining large-scale domestic generation. Wind, solar, biomass and gas contributed smaller shares.
This generation structure shapes the entire network. The Nikola Tesla thermal power plants near Obrenovac and the Kostolac complex are linked to the Kolubara and Drmno lignite mines, creating an integrated coal-to-power system. Large transmission corridors carry electricity from these sites toward Belgrade and other demand centers. Hydropower assets along the Danube, Drina and Lim river systems provide renewable generation and valuable operating flexibility.
The cross-border Đerdap complex on the Danube is particularly important. Bajina Bašta adds conventional hydropower and pumped storage, which can absorb electricity when supply is plentiful and generate when the system needs additional output.
Much of Serbia’s thermal fleet is aging, however, and its performance depends on reliable mining operations, plant maintenance and environmental upgrades. The addition of the 350 MW Kostolac B3 unit in late 2024 increased firm capacity, but it also reinforced the role of lignite at a time when Serbia is planning a longer-term transition toward lower-carbon generation.
The Trans-Balkan Corridor Is Rebuilding Serbia’s Regional Role
Serbia’s transmission network extended for more than 10,000 kilometers in 2024 and connects with the electricity systems of all surrounding markets. This makes the country a natural transit route between Central Europe, Southeast Europe and the western Balkans.
The Trans-Balkan Electricity Corridor is the central transmission project in this strategy. Its sections are intended to strengthen Serbia’s internal grid, increase cross-border capacity and improve the movement of electricity between Romania, Serbia, Bosnia and Herzegovina, Montenegro and wider European markets. The corridor is also important for connecting new renewable generation that cannot be accommodated by older parts of the network.
Stronger 400 kV lines can reduce internal congestion, improve security of supply and permit larger commercial exchanges with neighboring countries.
Progress has not been uniform. Energy Community assessments have noted delays in some regional market rules and infrastructure procedures, while later sections of the Trans-Balkan Corridor have remained under development. The physical lines therefore need to be matched by coordinated capacity allocation, balancing arrangements and market coupling if Serbia is to capture the full value of its location.
Renewable Growth Is Turning Grid Access Into the Main Constraint
Serbia has strong wind potential in Vojvodina and eastern regions, growing interest in utility-scale solar and an established hydropower base. The national target for renewable electricity is pushing new projects toward the system, but available grid capacity and connection timing are becoming decisive issues.
A system designed around large coal and hydropower plants must adapt to generation spread across many sites. Serbia needs additional substations, stronger corridors, automated distribution systems and better forecasting.
Storage will become more important as renewable capacity increases. The existing Bajina Bašta pumped-storage plant already provides a major balancing resource, and plans for additional pumped-storage capacity have remained part of Serbia’s long-term infrastructure discussion. Batteries may also become more useful at grid and project level, although pumped hydropower offers storage at a scale suited to the national system.
Distribution infrastructure must also absorb small solar plants, industrial generators and local projects. Modern meters, automated controls and lower losses can support these connections.
The transition will therefore be limited not only by how many wind or solar projects investors want to build, but by how quickly Serbia can create secure and transparent connections for them.
Gas Interconnectors Are Reducing Dependence on One Route
For many years, Serbia’s gas infrastructure relied heavily on Russian supply entering through a limited number of routes. The opening of the Serbia-Bulgaria gas interconnector in December 2023 changed that structure by creating access to gas from Azerbaijan and to liquefied natural gas arriving through terminals in the wider region.
The Serbian section is approximately 109 kilometers long and can carry about 1.8 billion cubic meters per year toward Serbia, creating an alternative route near Niš.
Further interconnections are planned. A Serbia-Romania link is designed to connect the Mokrin area with Romania’s BRUA network, while a proposed connection with North Macedonia could provide access toward the Trans-Adriatic and Trans-Anatolian pipeline systems. These projects would turn Serbia’s gas network from an endpoint into a more flexible regional system.
The Banatski Dvor underground facility supports winter supply and emergency resilience. Planned expansion would increase both its commercial volume and withdrawal rate. Pipelines diversify routes, but storage remains necessary for seasonal pressure and short disruptions.
Oil Infrastructure Remains Concentrated Around Pančevo
Serbia has limited domestic oil production and depends on imported crude. The Pančevo refinery is the central processing asset, while pipelines and storage facilities connect the refinery to supply routes and domestic product markets.
This concentration creates efficiency but also exposure. A disruption affecting one import route can quickly become a national energy-security issue. Serbia has therefore pursued a proposed crude oil pipeline connection with Hungary. The project would create another supply route and reduce exclusive dependence on crude delivered through the existing regional pipeline system.
Product pipelines and storage are also important because they determine how efficiently fuel moves between the refinery, depots, airports, industry and retail markets.
Modernization Must Happen Before the Old System Becomes Unreliable
Serbia cannot remove lignite from its electricity system quickly without replacement generation, storage and stronger networks. At the same time, continued dependence on aging coal assets creates maintenance, environmental and financial pressure. The practical infrastructure strategy is therefore transitional: reinforce the grid, maintain essential conventional capacity, expand hydropower flexibility, connect renewables and diversify imported fuels.
Regional connectivity is Serbia’s strongest structural advantage. Electricity lines, gas interconnectors, oil routes and storage projects can give the country access to more suppliers and markets than its domestic resource base alone would allow. However, incomplete projects or weak market coordination would leave much of that potential unused.
The direction of Serbia’s energy infrastructure is clear even though the timetable is not. The system is moving from a nationally centered coal-and-hydropower model toward a more interconnected Balkan network. Whether that transition improves security will depend on delivering the transmission, storage and import infrastructure before older assets become a greater operational risk.
