In a landmark decision that could reshape America’s energy future, the U.S. Nuclear Regulatory Commission (NRC) has issued its first commercial nuclear reactor construction permit in eight years. The green light goes to TerraPower — the nuclear innovation company founded and primarily funded by Microsoft co-founder Bill Gates — to build the Natrium sodium-cooled reactor in Kemmerer, Wyoming. Latest update (March 4, 2026): The NRC unanimously approved the permit for the 345-megawatt plant, marking the first approval for a non-light-water reactor design in more than 40 years. Read the full AP News report here.
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The $4 billion project is expected to come online by 2030, delivering reliable, low-carbon power to a region hungry for electricity — especially as AI data centers drive surging demand. But as with any major energy shift, questions remain. Here’s a clear-eyed look at what this means for Wyoming, the nation, and the planet.
The Project at a Glance: What TerraPower Is Building
TerraPower’s Natrium reactor is no ordinary nuclear plant. Unlike the water-cooled reactors that have dominated the industry for decades, this advanced design uses liquid sodium as a coolant. The technology promises higher efficiency, built-in energy storage via molten salt, and the ability to ramp up power output when needed — up to nearly 500 megawatts at peak.
The plant will rise on the site of a retiring coal-fired power station now being converted to natural gas, just outside the small town of Kemmerer (population ~2,500), about 130 miles northeast of Salt Lake City. Once operational, it is projected to supply enough electricity for roughly 400,000 homes while helping stabilize the grid amid growing AI-driven demand.
Construction on non-nuclear portions of the site began in 2024. With the NRC permit now in hand, nuclear-specific work can begin within weeks. TerraPower President and CEO Chris Levesque called the moment “historic,” noting the team had invested “thousands of manpower hours” to reach this point.
Why Bill Gates Bet Big on Nuclear — and Why Now
Bill Gates founded TerraPower in 2006 with a clear mission: develop safer, more efficient nuclear technology that could help decarbonize the global energy system. As one of the company’s largest investors, Gates has long argued that nuclear power is essential to meeting the world’s growing electricity needs without worsening climate change.
His timing aligns with a massive surge in demand from artificial intelligence. Data centers powering AI models consume enormous amounts of electricity — often around the clock. Gates has publicly stated that nuclear fission could be a “gigantic contributor” to meeting this demand, especially when solar and wind alone cannot provide 24/7 baseload power without massive battery storage.
Explore how U.S. energy policy is shifting toward advanced nuclear in our related economics report.
Environmental Wins — and the Climate Connection
Nuclear power produces virtually no air pollution during operation, making it a powerful tool in the fight against climate change. Unlike methane or coal plants, the Natrium reactor will not release significant greenhouse gases. TerraPower also claims the design generates less long-lived radioactive waste than traditional reactors.
The plant’s location is strategic: it repurposes infrastructure from a legacy coal site, offering a just transition for a region long tied to fossil fuels. Proponents see it as a bridge — reliable, weather-independent power that complements renewables while the world scales up solar, wind, and storage.
The Other Side: Real Risks and Legitimate Concerns
No energy source is without trade-offs. Nuclear power produces radioactive waste that must be stored safely for thousands of years. While TerraPower says its reactor will produce less waste, the issue of long-term disposal remains unresolved nationwide.
Sodium-cooled reactors bring their own technical challenges: sodium reacts violently with water and air, raising safety questions that regulators scrutinized intensely. Critics also point to the high upfront costs — $4 billion is no small investment — and the potential for delays or overruns, a common issue in nuclear projects.
Additionally, the reactor requires high-assay low-enriched uranium (HALEU) fuel, previously sourced largely from Russia. TerraPower is working to secure domestic and allied supplies, but fuel supply chains remain a geopolitical vulnerability.
Public skepticism persists in some quarters, rooted in past nuclear incidents and concerns about proliferation. The company and regulators emphasize rigorous safety reviews, but transparency and community engagement will be critical for long-term acceptance.
What This Means for Wyoming, AI, and America’s Energy Future
For Kemmerer and surrounding communities, the project promises jobs, economic revitalization, and a cleaner energy mix. It also positions the U.S. as a leader in advanced nuclear technology after decades of stagnation.
On a broader scale, the approval signals renewed federal support for nuclear innovation — a shift welcomed by both climate advocates seeking carbon-free power and industry leaders facing AI-driven electricity shortages. Yet it is not a silver bullet. True decarbonization will require a balanced portfolio: nuclear for baseload, renewables for scalability, and continued investment in storage and grid modernization.
See our analysis of nuclear’s role alongside renewables in long-term climate solutions.
Looking Ahead: 2030 and Beyond
If all goes according to plan, the Natrium reactor will begin commercial operation around 2030. Success here could unlock a new wave of advanced reactors, accelerating America’s clean-energy transition and providing the stable power backbone that intermittent renewables alone cannot deliver.
Whether this project ultimately proves to be the game-changer its supporters hope — or encounters the hurdles that have plagued nuclear development in the past — remains to be seen. What is clear is that the conversation about nuclear power has shifted from “if” to “how.”