“The resurgence of political, financial, and industrial interest in nuclear energy as a low-carbon baseload power source driven by AI electricity demand, energy security concerns, and the limits of intermittent renewables.” The current renaissance differs from earlier cycles: it is led as much by tech companies and data center operators as by utilities, and centers as much on advanced Small Modular Reactors (SMRs) as on conventional large-scale plants.
Executive Summary
Nuclear energy experienced a prolonged reputational collapse following Chernobyl (1986) and Fukushima (2011), with Germany, Belgium, Japan, and others announcing phase-outs and new construction grinding to a halt across Western markets. The reversal gathering momentum since 2022 reflects three converging pressures: climate commitments requiring dispatchable clean baseload that solar and wind cannot fully provide; energy security concerns following Russia’s weaponization of natural gas supplies to Europe; and a dramatic surge in electricity demand from AI data centers and semiconductor manufacturing. At COP28 in December 2023, 25 countries including the US, UK, France, Japan, and Canada pledged to triple global nuclear capacity by 2050. The open question is whether the technology and financing models have advanced sufficiently to deliver at the required scale and speed, against a history of cost overruns and construction delays in Western markets.
The Strategic Mechanism
The nuclear renaissance operates across three technology tracks simultaneously:
- Large conventional reactors: Countries including France, Poland, the Czech Republic, and the UK are pursuing new large-scale AP1000, EPR2, and VVER-1200 plants but Western EPR experience (Flamanville, Hinkley Point C) demonstrates persistent first-of-kind cost and schedule risk; South Korea’s KEPCO and China’s CNNC have stronger recent construction track records
- Small Modular Reactors (SMRs): Designs under 300 MWe, intended to benefit from factory manufacturing, modular deployment, and lower capital concentration risk NuScale, Rolls-Royce, GE-Hitachi, TerraPower, and over 70 other designs are in various development stages; no SMR has yet achieved commercial operation in a Western market, making cost projections speculative
- Advanced reactors: Generation IV concepts including molten salt, high-temperature gas-cooled, and fast reactors with improved safety profiles, waste characteristics, or fuel flexibility Bill Gates-backed TerraPower’s Natrium design broke ground in Wyoming in 2024, representing the leading Western advanced reactor demonstration project
Market & Policy Impact
- Microsoft signed a 20-year power purchase agreement with Constellation Energy in September 2023 to restart the Three Mile Island Unit 1 reactor in Pennsylvania the first reactor restart in US history securing baseload zero-carbon power for its data centers at prices exceeding $100/MWh
- The US Inflation Reduction Act’s nuclear production tax credit of $15-$25/MWh for existing and new nuclear generation has materially altered the economics of US nuclear operations, preventing closures of economic reactors and improving the investment case for new construction
- Uranium prices surged from $30/lb in early 2021 to over $100/lb in early 2024 the highest since the Fukushima aftermath reflecting growing confidence in nuclear expansion and supply concentration risk following Russia’s invasion of Ukraine and Kazakhstan’s Kazatomprom supply uncertainties
- France reversed course on nuclear closure in 2022, announcing six new EPR2 reactors with options for eight more, and extending operating licenses for existing plants committing to nuclear as the backbone of its net-zero strategy
- South Korea reinstated nuclear in its energy mix after the Moon administration’s phase-out policy, targeting nuclear at 30%+ of electricity by 2030 and positioning KEPCO as a leading export partner for new-build programs in Central Europe and the Middle East
Modern Case Study: Poland’s Nuclear Program and Geopolitical Alignment, 2022-2024
Poland’s decision to build its first nuclear power plants represents the intersection of decarbonization strategy and geopolitical alignment. After decades of coal dependence (still approximately 70% of electricity in 2022) and decades of Russian gas import, Poland selected Westinghouse’s AP1000 technology from the United States in a contract framed explicitly as an energy security decision creating a hard infrastructure dependency on the US over a 60-80 year operating timeline. The program, estimated at $20B+ for the first two units, will require sovereign financing support or export credit guarantees at a scale that tests Poland’s EU fiscal rules. The case illustrates how the nuclear renaissance in Central and Eastern Europe is as much a geopolitical alignment exercise choosing US, French, or Korean technology over Russian or Chinese as it is an energy transition decision.