The Nuclear Regulatory Commission unanimously approved Bill Gates TerraPower to build the first advanced nuclear reactor in 40 years on March 4, 2026. This isnt about climate—its about powering ChatGPT. The $4 billion Natrium reactor in Kemmerer, Wyoming targets 2030 and is designed to feed electricity-hungry AI data centers.
The approval breaks a 40-year regulatory logjam. Its the first non-light-water commercial reactor approved in over four decades and the first NRC construction permit in nearly a decade. What unlocked it? AIs insatiable power demands.
AI Data Centers Demand Nuclear Baseload Power
Global data centers will hit 96 gigawatts of critical power by 2026, nearly doubled from 2023. AI operations alone consume over 40% of that power, per the International Energy Agency. U.S. data centers represent 6% of total electricity—260 terawatt-hours in 2026. The grid cant scale with AI workloads.
Gates founded TerraPower to power “electricity-hungry data centers behind artificial intelligence.” Solar and wind cant provide 24/7 baseload power AI training demands. Nuclear can. Thats why every major tech company is buying reactors.
Big Techs Nuclear Pivot
In January 2026, Meta partnered with TerraPower and Oklo for 4 gigawatts of small modular reactors—enough for 3 million homes—to power its Prometheus AI campus in Ohio. Microsoft invested $1.6 billion to restart Three Mile Island. Amazon secured 1,920 megawatts through 2042. Google partnered with Kairos Power for SMRs by 2030. Nvidia backed TerraPowers $650 million round.
The companies that built AI now need nuclear to run it.
Natriums Molten Salt Storage Breakthrough
TerraPowers Natrium reactor generates 345 megawatts base output via sodium cooling at 500°C without pressurization, eliminating high-pressure risks. The innovation: a 1 gigawatt-hour molten salt energy storage system that boosts output to 500 megawatts on demand—enough for 400,000 homes.
Molten salt solves nuclears grid flexibility problem. The reactor runs continuously, storing excess heat. When AI workloads spike at 3 AM, stored heat generates steam instantly. Solar and wind cant match this. The Kemmerer plant replaces a retired coal station—symbolic shift. Construction started June 2024, targeting commercial operation by 2031.
Speed vs Safety Controversy
TerraPowers approval took exactly 18 months—a record. Executive Order 14300 (May 2025) mandated 18-month NRC decisions. NuScales previous record was 41 months. NPR investigations revealed the Trump administration “quietly rewritten nuclear regulations,” reducing environmental and security requirements. Critics warn: “No timeline for assessing a new design and making sure its safe.”
Defenders argue sodium-cooling is proven, safety reviews occurred, and decades-long approvals killed innovation. The debate: pragmatic reform or dangerous shortcuts?
Cascade Effect Incoming
TerraPowers approval could unlock a wave. NuScale has NRC-certified designs ready. Oklos microreactor targets 75 megawatts for AI. The SMR market stands at $6.97 billion (2026), projected $8.77 billion by 2034. Federal target: 100 gigawatts (2024) to 400 gigawatts by 2050.
Nuclear went from politically impossible to strategically necessary in two years. Not because climate won, but because training GPT-6 requires ungodly power and the grid cant deliver. Gates was right: AI needs nuclear. The NRC agreed.
