Serbia’s energy system is built around a difficult balance. Domestic lignite gives the country a large source of locally controlled electricity, but it also ties the power sector to aging coal plants, mining regions and high emissions. Hydropower provides a second major source of electricity, while wind and solar are beginning to grow at a faster rate. At the same time, Serbia remains dependent on imported natural gas and crude oil, connecting its energy security to Russia, neighboring countries and major regional pipelines.
This makes Serbia more than another coal-dependent European country. Its position in the center of the Balkans gives it an important role in electricity trade, gas transit and regional infrastructure. The future of energy in Serbia will depend on whether the country can modernize this system without creating shortages, sharp price increases or economic damage in communities that still depend on coal.
Serbia’s Energy System Still Runs on Two Domestic Resources
Coal and water remain the foundations of electricity generation in Serbia. Lignite-fired power plants supply most of the electricity produced by the state utility Elektroprivreda Srbije, usually known as EPS. Hydropower plants on the Danube, Drina and other rivers provide much of the remaining domestic generation.
This structure gives Serbia a degree of energy independence that many neighboring countries do not have. Coal is mined inside the country, while major hydroelectric stations use river systems that have supported electricity production for decades. However, neither source offers a simple long-term solution.
Serbian lignite is relatively low-quality coal that must be mined and transported in very large quantities. Many of the thermal units burning it are old, expensive to maintain and major sources of carbon dioxide, sulphur dioxide, nitrogen oxides and particulate pollution. Hydropower is cleaner, but output can change with rainfall, river flow and drought conditions.
Natural gas, oil, wind, solar energy and biomass fill other parts of the system. Gas is important for heating, industry and combined heat and power plants, while oil dominates transport. Wind and solar are growing, but they still operate inside a system designed mainly around large coal and hydropower stations.
Kolubara and Kostolac Keep Coal at the Center of Serbian Power
Serbia’s coal industry is concentrated around two main mining regions: Kolubara, southwest of Belgrade, and Kostolac, east of the capital near the Danube. These open-cast mines supply the large thermal power plants that form the core of the national electricity system.
The Nikola Tesla power stations at Obrenovac are the largest part of this coal network. Their location near Belgrade and connection to the Kolubara mining basin make them central to national power supply. The Kostolac complex combines lignite mining with several generating units near the Danube.
Coal is not only an electricity source. It supports mining, maintenance, engineering, rail transport and local public finances. Towns and municipalities around Kolubara and Kostolac have developed around the industry. A rapid closure of mines and plants would therefore affect employment, public services and regional identity as well as electricity production.
Serbia’s recent investment decisions show why the coal transition will be gradual. The 350 MW Kostolac B3 unit entered service in December 2024, becoming the first major new EPS generating unit added to the grid in more than three decades. Although it is more efficient than many older plants, it extends the role of lignite in Serbia’s power system.
At the same time, environmental requirements are becoming harder to avoid. Older Serbian plants need desulphurization equipment, improved filters and better control of nitrogen oxide emissions. The European Union’s Carbon Border Adjustment Mechanism will also create pressure on Serbian exporters and electricity producers as carbon costs become more important in trade with the EU.
Serbia has identified 2050 as the expected end point for coal use, but the route to that date remains uncertain. The practical issue is not simply announcing a phaseout. Serbia must decide which units close first, what replaces their electricity, and how mining regions will develop after lignite production begins to fall.
The Danube and Drina Give Serbia a Second Energy Foundation
Hydropower is the strongest low-carbon part of Serbia’s existing energy system. Large dams and power stations provide electricity, system flexibility and an important balance against coal.
The Đerdap, or Iron Gate, hydropower complex on the Danube is especially important. Serbia operates it with Romania along a shared section of the river. The Đerdap 1 and Đerdap 2 stations are major national assets and also examples of the cross-border character of Balkan energy infrastructure.
Western Serbia has another important group of plants on the Drina and Lim rivers. The Bajina Bašta station, the Zvornik plant and several smaller facilities form a hydroelectric chain connected to Serbia’s mountainous western geography. These plants are valuable because they can change output more quickly than traditional coal stations.
The pumped-storage plant at Bajina Bašta has an even more strategic role. Pumped storage uses electricity to move water to a higher reservoir when demand is lower, then releases the water to generate power when the system needs it. This allows Serbia to respond to demand peaks and manage unexpected changes in supply.
That function will become more important as wind and solar capacity increases. Solar output falls in the evening just as household demand may rise, while wind production can change over several hours. Pumped storage can help manage these movements without requiring every change to be covered by coal or imported electricity.
Hydropower still carries environmental and climate risks. Drought can reduce generation, while dams affect rivers, fish habitats and local communities. Serbia’s experience with small hydropower has also produced public opposition where projects were placed on sensitive mountain streams. Future hydro development is therefore likely to focus more on modernization, pumped storage and careful use of existing river systems than on building dams in every technically possible location.
Wind and Solar Are Moving Beyond a Small Supporting Role
Serbia’s modern renewable sector first developed through wind farms. The open agricultural landscape of Vojvodina and the strong wind resources of eastern Serbia attracted private investment in projects such as Čibuk, Kovačica and Krivača. By 2024, Serbia had more than 600 MW of wind capacity.
Solar energy developed more slowly, but its growth is now accelerating. Falling equipment costs, renewable auctions and the growth of household and business prosumers have improved the market. Solar projects can also use industrial land, former mining areas and other sites that may have limited agricultural value.
The Petka solar plant at Kostolac is symbolically important because it was built on land connected to the coal industry. Projects of this type show how renewable generation can become part of the economic transition in mining regions rather than being developed only in unrelated parts of the country.
Serbia’s renewable auctions are changing how new capacity is financed. Instead of relying mainly on older feed-in tariffs, larger projects compete for market premiums through auction rounds. The second auction produced strong interest and selected wind and solar projects with combined capacity of up to 645 MW.
Successful auctions do not guarantee that every plant will be built on schedule. Developers still need permits, land rights, equipment, finance and grid connections. The transmission system must also be able to manage many proposed projects in the same region.
The 2030 goal of obtaining 45% of electricity production from renewable sources is possible only if Serbia combines new wind and solar with existing hydropower. Renewables will need to become an equal pillar beside coal rather than a small addition to the old system.
The Grid May Decide How Fast Serbia Can Change
Serbia’s transmission network is one of its strongest strategic advantages. The country sits between Central Europe, southeastern Europe and the wider Western Balkans. It has electricity connections with numerous neighboring systems and can trade power in several directions.
Elektromreža Srbije, or EMS, operates the transmission network. Its responsibilities now go beyond moving electricity from coal and hydro plants to Serbian cities. EMS must prepare the grid for new renewable projects, larger cross-border flows, electricity-market integration and more complex balancing needs.
The Trans-Balkan Electricity Corridor is central to this work. The project is designed to strengthen high-voltage links through Serbia and improve the movement of electricity across the region. Additional transmission capacity can support imports during shortages, exports during periods of high production and the connection of new renewable plants.
Regional balancing is also developing. Serbia already exchanges balancing energy with several Western Balkan neighbors. A more integrated market can lower the cost of managing wind and solar because countries do not need to balance every change only with plants inside their own borders.
Distribution infrastructure presents a different challenge. Local networks must handle rooftop solar, electric vehicles, heat pumps and two-way electricity flows. Smart meters and better digital control are required if households and businesses are to become active energy producers.
Grid development is therefore not a technical side issue. Serbia could approve thousands of megawatts of renewable projects, but those projects will have limited value if transmission lines, substations and balancing systems are not ready to use their electricity.
Natural Gas Links Serbia to Russia and New Southern Routes
Natural gas has a smaller role in Serbian electricity generation than coal, but it remains important for industry, district heating and urban energy supply. The country produces only a limited amount of gas and must import most of what it consumes.
Russian gas has traditionally supplied the majority of the Serbian market. Gas reaches Serbia through the Balkan Stream route from Bulgaria and continues toward Hungary. This arrangement has provided access to contracted gas, but it has also concentrated supply around one main source.
The Serbia–Bulgaria gas interconnector changed this position by creating access to other routes. It allows Serbia to receive Azerbaijani gas through the Southern Gas Corridor and can also provide indirect access to liquefied natural gas arriving through terminals in Greece. Serbia began purchasing Azerbaijani gas under an agreement for up to 400 million cubic metres per year.
This is an important step, but it does not remove Russian dependence. Russian gas still covers most Serbian consumption, and the domestic wholesale market remains concentrated around the state-owned supplier Srbijagas. Gas-sector reform, network separation and greater access for competing suppliers remain important parts of Serbia’s commitments under the Energy Community.
The Banatski Dvor underground gas storage facility provides protection during winter demand peaks and supply interruptions. Additional storage capacity or access to storage in neighboring countries would strengthen this position.
Serbia is likely to continue using gas as it reduces coal, especially in district heating and flexible power production. The main policy question is whether gas becomes a controlled transition fuel or creates another long-term import dependency.
Pančevo Makes Oil Supply a National Security Question
Serbia has some domestic oil production, mainly in the northern province of Vojvodina, but it is not enough to meet national demand. Imported crude oil and petroleum products remain essential for road transport, agriculture, aviation and industry.
The Pančevo refinery, located northeast of Belgrade, is the center of the oil sector. It is operated by Naftna Industrija Srbije, or NIS, and is Serbia’s only major refinery. The plant produces diesel, gasoline, liquefied petroleum gas and other products for Serbia and regional markets.
Because Serbia is landlocked, imported crude usually reaches the country through Croatia’s JANAF pipeline system. Oil is unloaded at the Adriatic terminal on the island of Krk and moved inland toward Pančevo. This gives Serbia an efficient supply route, but it also creates dependence on cross-border pipeline access.
NIS’s ownership turned that commercial structure into a geopolitical problem. Russian companies Gazprom Neft and Gazprom held a majority stake when the United States imposed sanctions connected to Russia’s energy sector. During late 2025, restrictions on crude deliveries contributed to a temporary shutdown of the Pančevo refinery.
Temporary licences later allowed operations and crude imports to resume while negotiations continued over the sale of the Russian stake. Hungary’s MOL emerged as the main buyer, while the Serbian government sought greater influence over the company and guarantees that refinery production would continue.
The dispute showed how one refinery and one main crude route can become national vulnerabilities. Serbia has been expanding mandatory oil reserves, but it had not yet reached the standard of reserves equal to 90 days of net imports in 2025. Greater storage, alternative product imports and more secure control of NIS will remain central energy-security goals.
Nuclear Power Has Returned to the National Debate
Serbia does not operate a nuclear power plant and has never generated commercial electricity from nuclear reactors. Its nuclear experience comes mainly from research facilities at Vinča and from scientific institutions created during the Yugoslav period.
For more than 30 years, national law prohibited the construction of nuclear power plants. Amendments adopted in late 2024 removed that prohibition and allowed the government to examine nuclear energy as a possible future option.
This was not a decision to build a reactor. Serbia must first study whether its grid, institutions, workforce and finances could support a nuclear program. A country entering nuclear power needs an independent regulator, a trained operating workforce, emergency plans, waste policy, security systems and a financing model that can manage a project lasting many years.
A preliminary technical study prepared with French nuclear company EDF examined the steps Serbia would need to take under the International Atomic Energy Agency’s milestone process. One national planning scenario allows for up to 1,000 MW of nuclear capacity after 2040.
Nuclear energy could provide stable low-carbon power as lignite plants retire. It could also reduce exposure to changing weather conditions and imported gas. However, a reactor would require very large investment, long preparation and public support. Serbia must also consider whether a traditional large reactor would be suitable for its grid or whether smaller modular designs may become a more realistic option.
For the present, nuclear power is a strategic study rather than an active generation program. The debate matters because Serbia must soon decide what will replace large coal units during the 2030s and 2040s.
Heating, Buildings and Industry Are Part of the Energy Problem
Electricity generation receives most of the attention, but Serbia’s energy transition also depends on how buildings and factories use energy.
Many Serbian cities operate district heating networks. Natural gas is an important fuel in these systems, although some networks also use fuel oil, coal or biomass. Modernizing heating plants, repairing networks and introducing better control systems can reduce fuel consumption without reducing comfort.
Building efficiency is another major issue. Older apartment blocks and houses often lose large amounts of heat through walls, windows and roofs. Poor insulation increases demand for gas, firewood and electricity during winter. It also makes energy prices a social issue because lower-income households may struggle to finance renovation.
Industry adds a different type of demand. Steel, mining, chemicals, food processing and manufacturing require reliable electricity and heat. Serbia wants to attract more industrial investment, but future exporters will face stronger pressure to measure and reduce the carbon content of their products.
Energy efficiency can therefore achieve several goals at once. It can lower imports, reduce household bills, limit winter electricity peaks and make Serbian industry more competitive. These improvements may attract less public attention than a new power plant, but they are often faster and cheaper to deliver.
Serbia’s 2030 Targets Meet the Reality of Coal Regions
Serbia’s Integrated National Energy and Climate Plan sets a 2030 renewable target of 33.6% in gross final energy consumption and 45% in electricity production. It also calls for lower energy use and a major reduction in greenhouse gas emissions compared with 1990.
These goals require fast renewable construction, stronger grids, better energy efficiency and a gradual reduction in lignite generation. Yet Serbia has not set a detailed schedule for closing every coal unit. Energy security remains the main condition: thermal plants are expected to operate when the system needs them.
The 2025 Just Energy Transition Plan recognizes that coal regions require economic planning before major closures begin. Kolubara and Kostolac cannot be treated only as power-production sites. They need new employment, reclaimed land, infrastructure investment, workforce training and replacement sources of municipal revenue.
Serbia must also prepare for closer connection with EU climate rules. Even before full EU membership, carbon costs will affect electricity trade and industrial exports. Delaying reform may protect parts of the old system for several years, but it could make future adjustment more expensive.
The challenge is to avoid two opposite failures. Moving too slowly could leave Serbia with polluting plants, higher carbon costs and weaker access to investment. Moving without enough preparation could produce electricity shortages and economic damage in mining communities.
The Future of Energy in Serbia Will Be Decided by Infrastructure
Serbia is unlikely to replace coal with one single technology. Its future system will probably combine hydropower, wind, solar, storage, regional electricity trade, limited gas generation and possibly nuclear power after 2040.
The most urgent work is less dramatic. Serbia needs new transmission lines, modern distribution networks, stronger energy reserves, efficient buildings and reliable institutions. It must settle the future ownership of NIS, diversify gas supplies and prepare coal regions for economic change.
Domestic lignite gave Serbia control over much of its electricity supply for decades. The next stage will require a different type of security: several generation sources, stronger connections with neighboring countries and enough flexibility to manage changing weather and market conditions.
Serbia’s position at the center of the Balkans can support this transition. Its rivers, transmission network, industrial base and regional connections are real advantages. Whether those advantages produce a cleaner and more secure energy system will depend on how quickly the country turns its targets into working infrastructure.
