Serbia is at a crossroads over its long-term energy strategy, with nuclear power emerging as a central component of future planning after decades of absence from the nuclear energy landscape. Following the repeal of a 35-year moratorium on nuclear power plant construction, Serbian policymakers and energy experts are actively debating how best to integrate nuclear technology into the country’s electricity mix as part of broader efforts to ensure energy security, reduce carbon emissions, and replace aging coal-fired generation.
At the forefront of the discussion are three principal options being evaluated for Serbian involvement in nuclear energy, according to Dalibor Arbutina, acting director of JP Nuklearni objekti Srbije. The first option is participation in a nuclear project abroad, such as acquiring a 5–10 percent equity stake in the new reactors at the Paks II Nuclear Power Plant project in neighbouring Hungary. Located near the Danube, Paks II has entered active construction and is viewed regionally as a strategic investment in low-carbon baseload energy. A minority stake in such a venture would enable Serbia to gain operational experience and technological insight without shouldering the full financial and logistical burden of building its own plant.
The second option under consideration is deploying small modular reactors (SMRs). SMR technology has been gaining global traction as a potential game-changer in nuclear deployment because of lower upfront capital costs, modular scalability, and shorter construction timelines compared with conventional large reactors. While SMRs are still emerging from demonstration and early commercial projects worldwide, they offer flexibility in siting and could, in theory, be integrated into existing grids or even at sites currently housing fossil-fuel plants slated for retirement. However, critics note that SMRs are not yet widely proven in long-duration commercial service and may require extensive regulatory and infrastructure development before they can be adopted.
The third option is the construction of a traditional large-scale nuclear power plant on Serbian territory. This pathway would entail selecting a technology provider and strategic partner capable of delivering a multi-gigawatt facility, which could act as a cornerstone of Serbia’s baseload generation for decades. Conventional reactors, such as VVER-type designs offered by international vendors, have decades of commercial operating pedigree and are capable of producing large amounts of stable, low-carbon electricity once operational. However, building a conventional nuclear plant requires a long lead time, significant capital investment — often running into the multi-billion-euro range — and the establishment of robust regulatory, safety oversight, and fuel supply frameworks.
Experts and officials emphasise that, ideally, Serbia would pursue all three options in sequence or in parallel if financial and institutional conditions allow. Participation in an existing regional project could build familiarity and skill, SMRs could offer near-term deployment flexibility, and a major domestic nuclear plant could ultimately anchor Serbia’s energy system in the long run with dependable baseload capacity.
This strategic debate is rooted in broader shifts in Serbia’s energy policy. The National Assembly’s amendment to the energy law ending the nuclear ban in late 2024 has created a legal foundation for nuclear development, and a preliminary technical study conducted with international partners has analysed potential integration scenarios for nuclear generation over a 15–20-year horizon. These reforms align with Serbia’s goals to diversify its generation mix, phase down reliance on coal, and strengthen energy sovereignty in a region where countries such as Hungary, Slovenia, and Romania already operate nuclear plants.
As the dialogue continues, key decisions ahead will involve not only technology choice and financing models but also regulatory preparedness, workforce development for long-term plant operation and safety oversight, and public acceptance of nuclear energy as part of Serbia’s future electricity system. Confronted with climate commitments and the eventual retirement of coal-fired power, officials acknowledge that the timing and sequencing of nuclear integration will be a defining feature of Serbia’s energy transition over the next decade.
