What's happening
TerraPower commenced construction on April 23 of its 345-megawatt Natrium advanced nuclear reactor in Kemmerer, Wyoming, following receipt of a construction permit from the U.S. Nuclear Regulatory Commission in March 2026. The $4 billion project operates under a 50-50 cost-sharing partnership with the U.S. Department of Energy, which provides up to $2 billion in federal funding. The plant features molten salt energy storage technology that can boost output to 500 megawatts during peak demand periods.
The project represents the first commercial nuclear reactor construction in the United States in over a decade, with TerraPower targeting a 42-month build timeline for operational status by 2031. Construction will mobilize approximately 1,600 workers, with 250 full-time staff employed once operational. Key partners include GE Vernova providing reactor technology, Bechtel serving as the engineering, procurement and construction contractor, and Rocky Mountain Power as the utility partner.
Why it matters for markets
The groundbreaking addresses surging electricity demand from AI data centers, with TerraPower securing an agreement to supply Meta with up to eight Natrium plants by 2035, providing up to 2.8 GW of total power capacity. This partnership positions advanced nuclear as a carbon-free baseload solution for tech companies' growing energy needs, as Meta's AI infrastructure expansion drives unprecedented power requirements. The project's $4 billion cost represents a significant reduction from previous U.S. commercial reactors that exceeded $30 billion, potentially making advanced nuclear economically competitive.
TerraPower CEO Chris Levesque stated the Natrium reactor will be competitive with combined-cycle natural gas plants, traditionally considered the cheapest electricity source. The company raised $650 million in June 2025 from investors including Nvidia's NVentures, reflecting growing investor confidence in advanced nuclear technology. TerraPower projects scaling to 10-12 reactor deliveries annually by the end of the 2030s, suggesting a substantial market opportunity for nuclear technology suppliers and construction partners.
Sectors and assets to watch
GE Vernova stands to benefit as the primary technology provider for the Natrium reactor design, with potential for additional contracts as TerraPower scales production. The company's $308.90 billion market cap reflects its position across multiple energy transition technologies, and nuclear partnerships could drive incremental revenue growth in its power generation segment. Meta's $1.67 trillion market cap incorporates expectations for continued AI infrastructure investment, with the nuclear agreement providing long-term power cost certainty for data center operations.
Nvidia's involvement through NVentures connects the semiconductor giant to nuclear power infrastructure supporting AI workloads, though the investment represents a small portion of its $4.85 trillion market cap. Broader implications extend to utilities, nuclear fuel suppliers, and specialized construction firms positioned to support advanced reactor deployment across the United States.
What to watch next
Monitor TerraPower's construction milestones over the 42-month timeline, particularly any schedule or cost developments that could influence investor confidence in advanced nuclear technology. Track additional utility partnerships and potential announcements of the remaining seven reactors in Meta's agreement, which could validate the commercial viability of the Natrium design and drive further investment in the sector.