The Serbian industrial data for 2025 make one point unusually clear: weather is no longer a background variable in energy economics. It is becoming a direct industrial risk factor. The February 2026 issue of MAT – Macroeconomic Analyses and Trends shows that Serbia’s electricity supply sector, which accounts for 15.3% of total industrial production, remained under pressure for most of 2025, and that the main obstacle to a stronger recovery was limited hydro generation caused by drought conditions. Over the full year, the sector electricity, gas, steam and air-conditioning supply declined by 1.8%, while hydropower production was reduced by around 18.5%.
That combination is important because it connects meteorological conditions directly to industrial statistics. In Serbia, and more broadly across the Balkans, electricity production is not only a utility-sector issue. It shapes manufacturing costs, mining operations, trade balances, dispatch stability, import dependence, and the broader credibility of economic growth forecasts. When hydro output falls sharply, the consequences move quickly beyond the energy sector itself and into the real economy.
The MAT report describes exactly that pattern. After a pronounced downward tendency that began in December 2023, the electricity supply sector finally started showing signs of stabilization from the middle of 2025. The turnaround came through higher generation from public thermal power plants and increased electricity production from solar energy. Yet the report is explicit that the key constraint on fuller recovery was hydropower. From April 2025 onward, drought pushed hydro production below both the previous year’s level and the medium-term average. Only in November and December did conditions begin to improve, with hydropower output rising 16.9% and 8.1% year-on-year respectively, followed by 11.1% growth in January 2026 as rainfall and snowfall increased across Serbia, the surrounding region, and Central Europe.
This sequence is highly revealing for the wider Balkan energy system. It shows how a weather event such as drought can start as a hydrological problem, become an electricity supply problem, and then feed into industrial performance and macroeconomic expectations. In 2025, Serbia’s total industrial production grew only 0.9%, and that already weak result was shaped by several simultaneous pressures: weak European demand, refinery disruption, and energy-sector fragility. In such an environment, a major hydropower shortfall does not remain isolated inside the power system. It interacts with existing industrial weakness and amplifies it.
This is precisely why the issue matters beyond Serbia. The Balkan electricity system is structurally exposed to weather-driven generation swings. Much of the region combines aging thermal fleets, hydropower dependence, rising renewable penetration, and varying levels of import reliance. In wet years, hydro can ease system balances, reduce marginal costs, and limit import needs. In dry years, the same systems become more dependent on lignite, gas where available, and cross-border purchases. That means industrial output in the region becomes more exposed to hydrology than traditional macro models usually assume.
Serbia is a strong example of that mechanism because its industrial system is energy-intensive and because electricity supply has a visible industrial weight. The 15.3% share of electricity, gas, steam, and air-conditioning supply in total industrial production means that fluctuations in power-sector output feed directly into national industrial statistics. When hydro production collapses, even a partial recovery in thermal and solar generation may not be enough to prevent a negative annual sectoral result. That is exactly what happened in 2025, when stronger thermal and solar production stabilized the system but did not fully neutralize the hydro shortfall, leaving the sector down 1.8% for the year.
The industrial implications go further than the production index itself. A power system under hydrological pressure typically experiences higher balancing stress, increased recourse to thermal generation, greater sensitivity to unplanned outages, and greater exposure to price volatility in regional markets. Even where those effects do not show up immediately in final annual output, they alter the operating environment for industrial consumers. Heavy industry, mining, and manufacturing do not need a formal power shortage to be affected. They can be hurt by more expensive marginal generation, less dispatch flexibility, tighter reserve margins, or higher import dependence during peak periods.
The MAT report does not provide a full regional dispatch model, but its industrial-energy narrative strongly supports that interpretation. It frames hydropower weakness as the main reason the electricity supply sector could not recover more decisively in 2025, despite stronger public thermal generation and solar output. That means the system did have fallback options, but those options were not fully equivalent to lost hydro in economic or industrial terms. Hydro is not just another MWh source in the Balkan context. It is a balancing resource, a seasonal buffer, and often a cost stabilizer. When it underperforms, the system can continue functioning, but usually under less favorable industrial conditions.
This matters even more in a wider Balkan perspective because many neighboring systems are exposed to similar patterns. Hydrology does not move only at national level. Droughts and wet periods often affect multiple countries at once across Southeast Europe and Central Europe. MAT explicitly notes that the late recovery in January 2026 was linked to rainfall and snowfall not just in Serbia, but in the broader region and in Central Europe. That detail points to an important cross-border reality: Balkan electricity systems are weather-correlated. When drought hits, it can reduce hydro availability across multiple interconnected markets simultaneously. When precipitation improves, recovery can also be region-wide.
That correlation increases systemic risk. If one country suffers a hydro shortfall while neighbors remain well supplied, imports can usually bridge the gap. But if several countries face the same hydrological weakness, the regional market tightens and power prices can respond sharply. In those conditions, industrial users become exposed not only to domestic production weakness but also to regional scarcity pricing. This is why weather risk in the Balkan energy system should be treated as a structural economic variable rather than a temporary operational disturbance.
The Serbian case in 2025 is especially instructive because it occurred alongside other shocks. The collapse in petroleum refining at the Pančevo refinery had already become a major industrial drag, with production of coke and petroleum products falling 94.3% in December 2025. At the same time, broader European manufacturing conditions remained weak, with manufacturing PMI in January 2026 at 49.5 in the EU, 49.1 in Germany, and 48.1 in Italy. In other words, Serbia was managing weather-driven electricity stress in a year when both domestic energy disruption and external industrial demand were already unfavorable.
That combination illustrates a deeper principle. Weather risk becomes economically more damaging when it coincides with other forms of fragility. A hydro shortfall in a year of strong industrial demand and stable refinery operations is one thing. A hydro shortfall in a year of sanctions-related energy uncertainty, weak eurozone manufacturing, and narrow industrial growth breadth is something else entirely. It reduces the room for offsetting adjustments elsewhere in the economy.
The MAT data support exactly that reading of Serbia’s 2025 industrial profile. Total industrial growth of 0.9% was already being sustained by a limited number of positive drivers, especially automotive production and rubber-plastics manufacturing. Mining provided stability with 4.7% annual growth, and the automotive branch alone contributed 1.8 percentage points to total manufacturing growth of 1.1%. In such a narrow industrial structure, the power sector cannot easily absorb a weather shock without consequences for aggregate performance.
There is also a transition-policy dimension to this issue. Serbia, like much of the Balkans, is moving gradually toward a more diversified electricity mix that includes more solar generation. MAT notes that improved output from electricity generated from the sun contributed to stabilization in the power sector during 2025. That is an important signal. It suggests that solar is beginning to play a visible role in compensating for weaker hydro conditions. Yet it also points to a more complex future. Solar and hydro are both weather-dependent, though in different ways. A system that adds more solar without adding enough storage, grid flexibility, or fast-response balancing capacity may reduce one form of risk while introducing another.
This is where the Balkan context becomes particularly significant. The region is not transitioning from a simple, stable system into another simple, stable system. It is moving from hydro-thermal systems with aging assets into more variable systems shaped by hydrology, solar output, interconnection flows, and policy-driven decarbonization pressures. That means weather risk is likely to become more multidimensional. Drought can hurt hydro. Extended cloud cover can weaken solar production. Heat can raise demand and reduce thermal efficiency. Cold snaps can tighten regional supply-demand balances and stress interconnectors. Industrial output in such a system becomes more exposed to meteorology than older industrial-growth frameworks assumed.
The Serbian data from 2025–2026 suggest that this future is already arriving. The sector stabilized only once thermal generation and solar output partially compensated for hydro weakness. Then, once precipitation improved regionally, hydro output rebounded. This is not the profile of a power system where one dominant source guarantees stability. It is the profile of a balancing system in which multiple generation types must work together, and where weather increasingly governs which of them carries the margin in any given season.
For industrial strategy, that has at least three implications. The first is that weather risk must be integrated into industrial forecasting. It is no longer sufficient to treat electricity as a stable background input while forecasting manufacturing, mining, or export performance. In the Balkan system, electricity production itself is becoming volatile enough to shape industrial outcomes directly.
The second implication is that energy resilience and industrial resilience are converging. A country whose electricity system cannot manage dry years efficiently will find that its industrial output, cost structure, and competitiveness are increasingly exposed to climate variability. That does not mean industrial collapse follows every drought. But it does mean a less predictable operating environment for firms and planners.
The third implication is regional. Because weather patterns in the Balkans and Central Europe can be correlated, regional electricity-market integration is not by itself a full solution to hydrological risk. Cross-border trade remains essential, but if neighboring systems are all under pressure at the same time, regional balancing becomes more expensive and less reliable. That means national investment in flexibility, storage, dispatchable backup, and grid modernization remains crucial even in an interconnected market.
The Serbian case also shows that not all energy risks are of the same type. In 2025, the country faced both weather-driven hydropower weakness and geopolitically driven refinery disruption. The former arose from drought. The latter arose from ownership structures and sanctions pressure surrounding NIS. Together they formed a dual-risk energy environment: one environmental, one geopolitical. The fact that both could affect industrial output in the same year is a reminder that Balkan industrial systems must now navigate multiple categories of energy insecurity simultaneously.
That is why the recovery visible in November 2025, December 2025, and January 2026 should be interpreted carefully. It is encouraging that hydropower output rose 16.9%, then 8.1%, then 11.1%. But those figures do not remove the underlying lesson of the year. Serbia’s electricity system remained vulnerable to hydrological swings, and the industrial sector remained sensitive to those swings because the energy system still lacks full insulation from weather-driven variability.
The broader Balkan lesson is similar. Weather is becoming an industrial variable. In a region where hydro, thermal plants, import dependence, and increasingly solar all interact, climate volatility can no longer be treated as an operational afterthought. It belongs at the center of industrial analysis, electricity planning, and macroeconomic forecasting. Serbia’s 2025 experience did not create that reality, but it did measure it with unusual clarity.
