Romania on Thursday began a controlled shutdown of the second reactor at its Cernavoda nuclear power plant as severe drought continues to grip southeastern Europe, with the Danube River reaching critically low levels for the second time this month.
The plant operator Nuclearelectrica announced in a statement addressed to the Bucharest Stock Exchange that 'the decision to carry out a controlled shutdown of Unit 2 was determined by the continued significant decrease in the level of the Danube River.' The first reactor at Cernavoda was taken offline in late July for the same reason.
Cernavoda accounts for approximately 20% of Romania's electricity generation when both reactors are operational. The facility uses water from the Danube River to cool its two reactors, a system that requires minimum water levels to function safely.
Acting Prime Minister Ilie Bolojan declared a nationwide state of alert in the energy sector on July 31 for August as authorities scrambled to prevent the shutdown. Romania's Ministry of Energy stated that estimates show the country's electricity supply would be 'fully covered by alternative sources and imports' after the second reactor goes offline.
Romanian authorities undertook unprecedented efforts to avert the shutdown, including a military operation last week in which engineers sank four barges loaded with rock near the Danube's Bala Canal. Controlled explosions were used to blast rocks from the riverbed, aiming to redirect water flow toward the Cernavoda plant. Despite these efforts, water levels fell below operational thresholds.
'Maintaining both units in a safe shutdown state has no impact on nuclear safety parameters, including personnel, the environment and the population,' Nuclearelectrica stated.
What the Left Is Saying
Progressive voices have pointed to the Cernavoda shutdown as evidence of the cascading effects of climate change on energy infrastructure. Environmental advocates argue that extreme weather events made more frequent by rising global temperatures are exposing vulnerabilities in power systems designed for historical climate conditions.
Climate campaigners note that nuclear plants requiring large volumes of cooling water face particular challenges as droughts intensify across Europe. They argue this underscores the need to accelerate investment in renewable energy sources and storage technologies less dependent on consistent water supplies.
Some progressive analysts have questioned whether long-term nuclear plant siting decisions adequately accounted for climate projections, arguing that facilities relying on major rivers for cooling represent a growing vulnerability as drought conditions become more severe.
Green party politicians across Europe have renewed calls for faster deployment of solar and wind generation, which they say can be located in diverse areas rather than concentrated at large river-based installations. They argue the Cernavoda situation demonstrates why energy systems need built-in resilience against weather disruptions.
What the Right Is Saying
Conservative commentators have emphasized that nuclear power remains one of the most reliable sources of clean baseload electricity and should not be vulnerable to weather-related shutdowns. They argue the current crisis stems from extreme conditions, not fundamental problems with nuclear technology.
Defenders of Romania's response note that authorities acted decisively, deploying military resources in an unprecedented effort to redirect water flow toward the plant. They say this demonstrates government commitment to maintaining energy security during emergencies.
Energy independence advocates have highlighted how Romania's situation illustrates broader concerns about European energy vulnerability. Some conservative analysts argue this reinforces the case for maintaining diverse generation capacity and reducing reliance on energy imports from Russia or other potentially unreliable suppliers.
Pro-nuclear voices in the conservative spectrum point out that nuclear power produces minimal carbon emissions and should be expanded, not constrained by cooling water requirements. They suggest technological solutions such as air-cooling systems could address drought vulnerabilities in future plant designs.
What the Numbers Show
Cernavoda Nuclear Power Plant generates approximately 20% of Romania's total electricity when both reactors are operating at full capacity.
Each reactor at Cernavoda has a generating capacity of roughly 700-750 megawatts, meaning the facility can produce between 1,400 and 1,500 megawatts when fully operational.
The Danube River water levels have dropped to record lows in recent weeks due to scorching heat and reduced rainfall across southeastern Europe.
Romania's Ministry of Energy confirmed that alternative generation sources and electricity imports are expected to cover demand after both reactors are offline.
Neighboring Hungary faces a similar situation at its Paks nuclear power plant, the country's only nuclear facility, which is also nearing shutdown for the first time in its 44-year history due to low Danube levels. Hungarian authorities have announced plans including sinking barges and constructing barriers to raise water levels near the plant.
The Bottom Line
Romania has now taken both reactors at Cernavoda offline, removing approximately 1,500 megawatts from a national grid that must find alternative sources of supply. The Ministry of Energy projects sufficient generation capacity exists through other plants and imports, though the situation remains fluid.
The shutdowns highlight how extreme weather events linked to climate change are testing energy infrastructure designed for historical conditions. Both Cernavoda in Romania and Paks in Hungary rely on Danube River cooling systems that require minimum water levels to operate safely.
Authorities in both countries are implementing emergency measures to raise river levels, with military involvement in some operations. The effectiveness of these efforts will determine whether nuclear generation can resume before extended shutdowns create supply constraints.
Energy markets across southeastern Europe could face upward pressure on prices if multiple nuclear units remain offline simultaneously during peak summer demand. Grid operators in the region will need to coordinate closely as they manage reduced baseload capacity from nuclear sources.