Nuclear Energy in Europe: Current Trends and Future Outlook

The landscape of nuclear energy in Europe is currently defined by a sharp divide between nations accelerating their nuclear capabilities and those phasing them out. While some countries view nuclear power as a cornerstone of a clean energy transition, others have pivoted toward renewables following historical safety concerns and political shifts.

The Expansion of Nuclear Capacity

Currently, nine European nations are either actively constructing new reactors or are in the serious planning stages for new facilities. These countries include France, Finland, Slovakia, Poland, Hungary, Romania, Bulgaria, the Czech Republic, and Sweden. In addition, the Slovenian government issued an energy permit for a new nuclear power plant in 2021 and is currently implementing a 20-year life extension for the existing Krško Nuclear Power Plant.

Technological advancement is a primary driver for these nations. France, often seen as a global commercial model for nuclear power, continues to fund the sector heavily, including a €1 billion investment dedicated to nuclear safety and research into fourth-generation technology (advanced reactor designs that improve safety and efficiency).

However, the path to expansion has not been without hurdles. The European Pressurized Reactor (EPR) projects in France and Finland, as well as the VVR reactors in Mochovce, Slovakia, have faced significant budget overruns and construction delays, though the Slovakian plants are now nearing completion.

Capacity Upgrades

Beyond building new plants, several countries have increased their energy output by upgrading existing reactors. These technical enhancements have successfully boosted power generation per unit by between 10% and 29%.

The Shift Toward Nuclear Phase-Outs

Conversely, several European nations have moved to restrict or eliminate nuclear power. Italy's transition began with a 1987 vote that hindered new construction—interpreted by subsequent governments as a total repeal—leading to the shutdown of all its operating reactors. A second vote in 2011 reaffirmed Italy's non-nuclear status. Similarly, Spain and Switzerland have banned the construction of new reactors, and Belgium has considered phasing out its existing fleet.

The 2011 Fukushima nuclear disaster in Japan served as a major catalyst for policy changes, particularly in Germany and Switzerland. Switzerland abandoned plans to replace aging reactors and intends to take its final plant offline by 2034.

Germany's response was more immediate. On August 6, 2011, the government permanently shut down eight reactors. This was part of a broader pledge to remove all remaining reactors from the grid by 2022 as part of the Energiewende (Germany's transition to a renewable energy economy).

This transition has faced criticism and logistical challenges. Siemens, which built all 17 of Germany's nuclear plants, exited the nuclear sector following the policy shift. While the government aimed for 35% renewable energy by 2020, critics argue that the phase-out has been more costly than expected and has led to an increased reliance on polluting fossil fuel plants, as solar and wind power remain heavily state-subsidized compared to more efficient fossil fuel technologies.

Modern Initiatives and Political Comebacks

Recent years have seen a renewed political push for nuclear energy within the European Union. In 2023, France and a group of member states established the European Nuclear Energy Alliance to integrate nuclear energy more deeply into EU policies. This momentum was further strengthened during the Nuclear Energy Summit in Brussels in March 2024.

To modernize the fleet, the European Commission launched the European Industrial Alliance on Small Modular Reactors (SMRs) in February 2024. SMRs are smaller, more flexible nuclear reactors designed to accelerate deployment and support the EU's broader clean energy goals.

Key Facts

• Nine countries are currently building or planning new nuclear reactors.
• Germany shut down eight reactors immediately in 2011 and aimed for a full phase-out by 2022.
• France is investing €1 billion into nuclear safety and fourth-generation technology.
• SMRs (Small Modular Reactors) are the focus of a new 2024 European Commission alliance.
• Upgrades to existing reactors have increased power output by 10% to 29% in some regions.

European Nuclear Energy Status Summary

Policy Direction	Key Countries	Primary Drivers/Events
Expansion/Construction	France, Finland, Poland, Slovakia, etc.	Clean energy transition, SMR development
Phase-out/Bans	Germany, Italy, Switzerland, Spain	Fukushima disaster, political referendums
Capacity Upgrades	Various nuclear-owning nations	Efficiency gains (10-29% increase)

Frequently Asked Questions

Which European countries are currently expanding their nuclear power?

France, Finland, Slovakia, Poland, Hungary, Romania, Bulgaria, the Czech Republic, and Sweden are either building new reactors or seriously planning to do so.

What is the European Industrial Alliance on Small Modular Reactors?

Launched in February 2024 by the European Commission, this alliance aims to accelerate the deployment of SMRs—a new generation of smaller nuclear technologies—to support the EU's clean energy transition.

How did the Fukushima disaster affect German energy policy?

The disaster led Germany to immediately shut down eight reactors in August 2011 and set a target to phase out all nuclear power by the end of 2022 in favor of renewable energy (Energiewende).

What are the challenges facing new reactor construction in Europe?

Projects such as the EPR reactors in France and Finland, and VVR reactors in Slovakia, have experienced significant delays and have run over their original budgets.

What is the European Nuclear Energy Alliance?

Founded in 2023 by France and other member states, this alliance works to advance the role of nuclear energy within European Union policies, supported by events like the March 2024 Nuclear Energy Summit.