Europe is abandoning its decades-long retreat from nuclear power, driven by geopolitical shocks, soaring electricity costs, and the explosive energy demands of artificial intelligence data centers. The European Commission has unveiled a comprehensive nuclear strategy this month, with leaders openly calling previous phase-outs a "strategic mistake." The shift marks a dramatic pivot from the continent's post-Fukushima stance, as countries from France to Greece reconsider atomic energy as critical infrastructure. Why Is Europe Suddenly Embracing Nuclear Again? The trigger is unmistakable: geopolitical vulnerability. The closure of the Strait of Hormuz during the ongoing Iran war sent energy prices surging, exposing Europe's dangerous dependence on imported fossil fuels. The EU still imports over 50% of its energy, and the crisis has added billions to the imported energy bill, mirroring the price shocks of 2022 after Russia's invasion of Ukraine. Even in stable times, European households and industry pay among the world's highest electricity prices, with Germany, Belgium, and Denmark leading the rankings. But there's another factor reshaping the conversation: artificial intelligence. AI data centers consume enormous amounts of electricity, and European leaders now see nuclear as the only reliable way to power the continent's computing ambitions while maintaining energy independence. French President Emmanuel Macron explicitly linked nuclear expansion to AI competitiveness at the March 2026 Nuclear Energy Summit in Paris, stating that France's nuclear fleet has given the country "the ability to open data centres, to build computing capacity and to be at the heart of the artificial intelligence challenge". What Are Small Modular Reactors, and Why Do They Matter for AI? Rather than betting everything on massive traditional reactors, Europe is placing growing faith in small modular reactors, or SMRs. These compact, factory-built reactors are designed to be deployed faster and more flexibly than conventional nuclear plants. The European Commission's SMR Strategy, published this month, projects that the first units could be operational by the early 2030s, with capacity potentially scaling to between 17 gigawatts and 53 gigawatts by 2050. SMRs are particularly attractive for energy-intensive applications. According to the Commission, these reactors are well-suited to meeting the needs of AI data centers, industrial heat applications, hydrogen production, and district heating networks. The technology has gained international momentum; the United States and Japan announced a $40 billion project to develop SMRs in Tennessee and Alabama during Prime Minister Takaichi's recent visit to the White House, centered on GE Vernova Hitachi technology. How Are European Countries Pursuing Different Nuclear Strategies? - France: Already generates around 65% of its electricity from nuclear and exports surpluses to neighboring countries, demonstrating the independence gains available. The country is pressing ahead with six new European Pressurised Reactors (EPRs) and has eight more under consideration while expanding renewable capacity. - Germany: Closed its last nuclear reactors in 2023 after decades of phase-out policy. Chancellor Friedrich Merz has labeled the phase-out a "serious strategic error," signaling a potential reversal in national energy policy. - Belgium: Fighting to extend the lifespan of its existing nuclear fleet rather than pursuing new construction. - Italy: Preparing draft laws to repeal its longstanding ban on nuclear power, opening the door to new reactor development. - Greece: Historically cautious due to seismic concerns, has opened a public debate on advanced reactor designs and SMRs as a potential path forward. - Sweden and Finland: Never abandoned nuclear technology; the two countries continue to use atomic energy to underpin some of the highest renewable energy shares in final energy consumption. This patchwork approach reflects a pragmatic reassessment of nuclear's role in Europe's energy transition. Eleven EU member states have already endorsed a joint declaration backing SMR technology, and the European Commission has vowed to cut red tape through streamlined permitting and financial guarantees to speed deployment. What Are the Real Numbers Behind Europe's Nuclear Expansion? The scale of Europe's nuclear ambitions is substantial. Nuclear energy currently provides around 23% of the EU's electricity and approximately 50% of its low-carbon electricity, according to Eurostat. The European Commission's 8th Nuclear Illustrative Programme, released this month, projects that total EU nuclear capacity will grow from 98 gigawatts in 2025 to between 109 gigawatts and 150 gigawatts by 2050, supported by an estimated 241 billion euros in new investments. The climate impact could be equally significant. Expanding nuclear capacity could help the bloc avoid emissions equivalent to removing one-third of all cars from the world's roads. Finland's experience offers a real-world proof point: countries that maintained nuclear power have delivered more stable and competitive electricity prices than those that pursued phase-outs, such as Germany. "This reduction in the share of nuclear was a choice, I believe that it was a strategic mistake for Europe to turn its back on a reliable, affordable source of low-emissions power," stated Ursula von der Leyen, European Commission President. Ursula von der Leyen, European Commission President What Barriers Still Stand in the Way? Despite the momentum, major obstacles remain unresolved. Waste management, public acceptance, and the need for harmonized EU-wide regulation continue to pose challenges. Environmental organizations warn that large-scale nuclear investment could divert funds and political attention from faster rollout of renewables. Capital costs and long construction timelines continue to worry investors, while deep-rooted opposition lingers in Germany, Austria, and several other countries. There's also a strategic vulnerability that hasn't been fully addressed: Europe still faces dependencies on Russian technology, uranium, and fuel supplies, adding another layer of risk to nuclear expansion plans. Additionally, SMRs, despite their promise, are widely regarded as unproven at commercial scale, meaning the technology remains largely theoretical until units begin operating in the early 2030s. Nuclear development is intrinsically a long game and cannot provide an immediate fix to today's supply disruptions or price spikes. Yet for European leaders, the choice is becoming clear: embrace nuclear as part of the energy mix, or risk losing both energy independence and the ability to compete in the AI-driven global economy.
