Small modular reactors (SMRs) promise a shift toward flexible, factory-built energy, with individual units producing up to 300 MW. While Russia and China currently maintain the only grid-connected units, the United States is racing to close the gap. In late 2025, the Department of Energy awarded $800 million to the Tennessee Valley Authority and Holtec Government Services, aiming to scale nuclear capacity from 100 GW to 400 GW by 2050. International partnerships are also intensifying, notably a $40 billion U.S.-Japan initiative to deploy GE Vernova Hitachi technology in the American South.

Europe’s path remains more complex. Britain has positioned Rolls-Royce as a national champion, securing over $800 million in state financing and a major export deal to build reactors in Sweden. Yet, across the continent, progress is hampered by a lack of harmonized regulations and the difficulty of mobilizing large-scale public capital. Furthermore, the industry faces a critical fuel dependency: many advanced designs require HALEU fuel, a resource historically dominated by Russian supply chains. With over 120 distinct designs now in existence but few fully licensed, the sector remains in a state of high-stakes experimentation. The industry’s first U.S. commercial deployment is anticipated by 2028, but achieving that timeline requires overcoming both geopolitical friction and the persistent hurdle of industrial scaling.