The European Union is repositioning nuclear energy at the center of its long-term power strategy, with European Commission President Ursula von der Leyen stating that Europe’s retreat from nuclear power over the past decades was a “strategic mistake.” Speaking at the Nuclear Energy Summit in Paris, she argued that abandoning nuclear energy increased Europe’s exposure to volatile fossil fuel imports and weakened energy security at a critical time.

Her remarks accompanied the launch of a new European Strategy for Small Modular Reactors, designed to accelerate advanced nuclear deployment across member states and restore nuclear energy as a pillar of Europe’s low-carbon power mix.

Reassessing Europe’s Nuclear Decline

In the 1990s, nuclear energy generated roughly one-third of Europe’s electricity. Today, it accounts for approximately 15 percent. Several countries made political decisions to phase out or restrict nuclear development. Italy shut its reactors following a national referendum in 1987. Austria banned nuclear energy entirely. Germany accelerated its phase-out after the Fukushima disaster in 2011, completing the closure of its final plants in 2023.

Von der Leyen argued that this decline reduced Europe’s supply of stable, dispatchable low-carbon electricity. The result, she suggested, was greater dependence on imported fossil fuels, particularly during periods of geopolitical tension and energy price volatility.

Her position signals a notable shift in tone at the EU level, where nuclear energy has often been politically divisive despite being one of the largest sources of carbon-free electricity on the continent.

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A Dual Track: Renewables and Nuclear

Rather than framing nuclear as a replacement for renewables, the Commission is presenting it as complementary. Von der Leyen emphasized that Europe needs a portfolio of homegrown low-carbon energy sources to maintain industrial competitiveness, stabilize power systems and meet climate targets.

While wind and solar continue to expand rapidly, their variability creates challenges for grid stability. Nuclear energy, by contrast, provides consistent baseload power. The Commission’s updated approach reflects a recognition that meeting electrification demand from industry, transport and digital infrastructure will require both intermittent renewables and firm low-carbon generation.

This shift comes as electricity demand is expected to rise across Europe due to data centers, artificial intelligence applications, electrified heating and transport, and broader decarbonization of heavy industry.

Small Modular Reactors at the Core of the Strategy

Central to the new policy is the European Strategy for Small Modular Reactors. SMRs are significantly smaller than conventional nuclear plants and are designed to be factory-built and modular, potentially reducing construction timelines and capital risk.

The Commission aims to see SMR technology operational in Europe by the early 2030s. To support this objective, the strategy introduces several measures.

First, regulatory sandboxes will allow companies to test and validate innovative nuclear technologies under supervised conditions. Second, the Commission will work with member states to align licensing frameworks across borders, addressing one of the major barriers to faster deployment. Third, a €200 million guarantee mechanism funded through the EU Emissions Trading System will be established to de-risk private investment in advanced nuclear projects.

The guarantee structure is intended to crowd in institutional capital by reducing early-stage financing risk.

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Industrial and Strategic Implications

Von der Leyen highlighted Europe’s existing nuclear capabilities, noting that the region employs approximately half a million skilled nuclear workers. Europe also hosts advanced reactor developers and established supply chains across several member states.

Reframing nuclear as strategic infrastructure rather than a transitional technology could influence future EU taxonomy decisions, capital flows and industrial policy. It may also shape how European utilities balance investments between renewables, grid storage and next-generation nuclear assets.

The statement that turning away from nuclear was a strategic mistake marks one of the strongest endorsements of atomic energy from EU leadership in recent years. It signals that nuclear energy is no longer being treated as a legacy technology, but as a component of Europe’s long-term competitiveness and decarbonization strategy.

If implemented at scale, the SMR strategy could redefine the EU’s energy mix by the early 2030s and reshape the region’s position in the global nuclear technology race.

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