The International Atomic Energy Agency (IAEA) projects a substantial increase in global nuclear power capacity, with Director General Rafael Grossi forecasting a potential tripling by 2060 under a high-growth scenario. This outlook is driven by escalating global electricity demand, particularly from energy-intensive sectors like AI-powered data centers, and a broader recognition among nations of nuclear energy's role in enhancing energy security and achieving decarbonization goals. While the IAEA's report highlights a robust pipeline of over 60 new reactors under construction and significant upward revisions in future capacity forecasts, it also acknowledges a critical counterpoint from the International Energy Agency (IEA). The IEA suggests that despite nuclear growth, its overall share in global electricity production might either decline or remain stagnant, primarily because renewable energy sources are expanding at an even faster pace. This divergence underscores the complex dynamics at play in the global energy transition, where nuclear power seeks to re-establish its prominence amidst a rapidly evolving landscape dominated by renewables.

Rafael Grossi

Rafael Grossi, the Director General of the IAEA, presented a compelling case for nuclear energy's resurgence during his annual report to the UN General Assembly. He emphasized that nuclear power is increasingly viewed by a growing number of countries as a vital component for improving their energy security and meeting the demand for reliable, CO2-free energy, especially from technology companies. Grossi highlighted that as of 2025, over 400 operational reactors across more than 30 countries contributed ten percent of the world's electricity and a quarter of its low-carbon electricity. This data forms the foundation of the IAEA's optimistic projections, which foresee capacities rising by 50 percent in a base scenario and more than two-and-a-half times in a higher scenario by 2050 compared to 2024 levels.

Zaporizhzhia

Despite the IAEA's optimistic projections for nuclear energy's future, the report also brought to light significant safety concerns, particularly regarding the Zaporizhzhia nuclear power plant in Ukraine. Grossi explicitly stated that Europe's largest nuclear power plant remains "in a precarious situation" due to the ongoing Russian invasion. He detailed the frequent power outages, limited emergency diesel reserves, and persistent military activities that continue to threaten both the facility and its personnel. This situation serves as a stark reminder of the inherent risks associated with nuclear energy, especially in conflict zones, and underscores the critical importance of robust safety protocols and international oversight. The war in Ukraine, as Grossi noted, represents an "unprecedented threat to nuclear safety," tempering the broader enthusiasm for nuclear expansion with a dose of geopolitical reality.

Small Modular Reactors

A key element in the anticipated "comeback" of nuclear power, particularly championed by proponents, are Small Modular Reactors (SMRs). These smaller, more flexible nuclear power plants are seen by some, including German Economy Minister Katherina Reiche, as having significant potential to contribute to future energy mixes. However, the article reveals a notable skepticism from Reiche's own experts, who, according to a confidential briefing obtained by DER SPIEGEL, concluded that "globally, SMRs are not yet marketable." This internal assessment highlights the practical challenges and economic hurdles that SMR technology still faces before it can become a widespread and viable solution. The debate around SMRs, even within Germany, reflects the broader global discussion about the feasibility and economic competitiveness of advanced nuclear technologies in a rapidly evolving energy market.