Valar Atomics Seeks New Funding at Reported $6 Billion Valuation

Valar Atomics, a startup developing small modular nuclear reactors (SMRs), is in discussions to raise a new funding round that could value the company at around $6 billion, according to people familiar with the matter. The three-year-old company is reportedly seeking approximately $1 billion in new equity financing, with venture capital firm Sequoia expected to lead the investment.

The fundraising comes after Valar previously secured $450 million through a combination of equity and debt financing at a lower valuation of $2 billion. According to earlier reports, that funding included $340 million in equity and $110 million in debt. The latest negotiations highlight a growing trend in technology financing, in which investment rounds are completed in multiple stages at different valuations, allowing companies to raise capital over time and reflect changing market conditions.

Neither Valar Atomics nor Sequoia has commented publicly on the reported fundraising discussions. However, the company has continued to attract attention through its work on next-generation nuclear technology designed to support the rapidly growing energy demands of artificial intelligence infrastructure.

Earlier this month, Valar demonstrated that one of its experimental nuclear reactors successfully generated a small amount of electricity to power an Nvidia AI chip. Alongside the demonstration, the company announced a partnership with Nvidia to explore how advanced nuclear technology could eventually supply electricity to future AI data centres, an area expected to require significantly more power as artificial intelligence adoption continues to accelerate.

Interest in SMRs has grown alongside rising concerns about electricity shortages for AI infrastructure. Utilities in many regions are struggling to add new generating capacity quickly enough to meet projected demand, prompting technology companies and investors to consider nuclear energy as a potential long-term solution. SMRs are designed to be factory-built and smaller than conventional nuclear reactors, to reduce construction costs and deployment times.

Valar has attracted backing from several high-profile technology investors, including Anduril founder Palmer Luckey and Palantir chief technology officer Shyam Sankar. The company joins other nuclear startups such as Kairos Power, Bill Gates-backed TerraPower and NuScale Power, which are also developing advanced reactor technologies for commercial and industrial customers. NuScale remains the only SMR developer to receive U.S. regulatory design approval for its reactor technology.

The company’s reactor design is based on a helium-cooled, high-temperature gas reactor, which it believes could eventually be deployed at scale to supply electricity to data centres. While advocates argue that SMRs could become more affordable and easier to manufacture than traditional nuclear plants, the technology remains in its early stages and widespread commercial deployment is still expected to take years.

Valar has also challenged the U.S. Nuclear Regulatory Commission through ongoing legal action, arguing that small experimental reactors should not be subject to the same lengthy licensing requirements as full-scale commercial nuclear plants. The case has been paused several times, suggesting discussions between the parties may still be ongoing.

The company was founded by Isaiah Taylor, now 27, who left high school at 16 before launching two startups ahead of Valar Atomics. Taylor has also noted that his great-grandfather worked as a nuclear physicist on the Manhattan Project, a connection that helped inspire his interest in nuclear technology.