How Advanced Nuclear Reactors Are Powering the Next Generation of AI Data Centers

For years, the assumption was that hyperscalers would power the artificial intelligence revolution simply by buying up existing renewable energy credits and blanketing deserts with solar panels. But solar and wind, while critical to corporate sustainability goals, cannot provide the 24/7 firm power required by high-density AI data centers that operate continuously. This mismatch has forced a decisive strategic pivot across the tech industry: underwriting the commercialization of next-generation nuclear reactors.[5]

The scale of this shift crystallized in early 2026 when Meta announced a sweeping series of agreements to procure up to 6.6 gigawatts of firm nuclear power by 2035. The portfolio includes 20-year power purchase agreements for existing nuclear capacity, but more significantly, it provides direct funding to advance the deployment of entirely new reactor designs from developers like TerraPower and Oklo. By leveraging its massive balance sheet, Meta is acting as catalytic capital, de-risking first-of-a-kind infrastructure projects that could reshape the American energy grid.[1][2][5]

To understand why these specific technologies are being targeted, it is necessary to look at the mechanics of advanced nuclear designs, which differ fundamentally from the massive light-water reactors built in the 20th century. TerraPower, founded by Bill Gates, is developing the Natrium reactor, a 345-megawatt sodium-cooled fast reactor. Unlike traditional plants that use water for cooling, Natrium uses liquid sodium, which has a much higher boiling point and allows the reactor to operate at lower pressures, enhancing inherent safety.[3][4]

The defining innovation of the Natrium system, however, is its integration with a molten salt thermal energy storage system. Instead of sending heat directly to a turbine to generate electricity, the reactor's energy is delivered to a giant tank of molten salt.

This acts as a massive thermal battery, allowing the plant to run continuously at baseload while varying its electrical output to the grid. During peak demand, the system can draw on the stored heat to boost output to 500 megawatts for over five hours, allowing it to seamlessly complement intermittent renewable sources.[3][4]

Meta's agreement with TerraPower supports the early development of two Natrium units, with rights to energy from up to six more, potentially delivering 2.8 gigawatts of baseload capacity to the grid. Construction on the first commercial Natrium plant is already underway in Kemmerer, Wyoming, situated directly adjacent to a retiring coal facility to leverage existing transmission infrastructure. With completion targeted for 2030, this Wyoming site is intended to serve as the commercial blueprint for a nationwide fleet of advanced reactors underwritten by corporate power purchase agreements.[1][2][3]

Oklo, another key player in Meta's nuclear portfolio, is taking a distinctly different engineering approach with its Aurora powerhouse product line. The Aurora is a microreactor design—specifically a 75-megawatt pool-type sodium-cooled fast reactor that builds on the operational heritage of the Experimental Breeder Reactor II. It is designed to be built rapidly using factory-manufactured components and sits on a physical footprint of just a few acres, making it vastly more deployable than traditional sprawling nuclear power stations.[1]

The Aurora powerhouse utilizes metallic High-Assay Low-Enriched Uranium (HALEU) fuel and can operate for up to a decade without needing to be refueled. This "plug-and-play" model is highly attractive to data center operators, as it allows scalable power generation to be co-located directly with computing facilities, bypassing increasingly congested regional transmission grids. Meta's deal with Oklo aims to develop a 1.2-gigawatt power campus in Pike County, Ohio, specifically to support its Prometheus AI supercluster.[2]

The transition to advanced nuclear generation is not without significant structural hurdles. The regulatory environment for non-light-water reactors remains highly complex, requiring developers to navigate a licensing framework originally built for a completely different generation of technology. Furthermore, the supply chain for the specialized HALEU fuel—currently dominated by foreign state-owned enterprises—must be rapidly domesticated and scaled up to support the widespread commercial deployment of these reactors across the United States.[3][5]

Despite these formidable supply chain and regulatory challenges, the long-term trajectory of the energy sector is becoming clear. The unparalleled energy density and 24/7 reliability of advanced nuclear power make it the only currently viable zero-carbon solution capable of meeting the exponential growth of artificial intelligence compute workloads. By underwriting these early reactor deployments with massive capital commitments, tech giants are not just securing their own operational futures; they are effectively funding the next era of global energy infrastructure.[1][2][5]