Valar Atomics

Salt Lake City, Utah, USA
Active
HTGR

Company overview

Founded
2022
Total funding
USD 1 billion Series B plus USD 200 million credit facility (announced August 2026, led by Sequoia Capital, ~USD 6 billion valuation); followed approximately USD 450 million raised previously (~USD 340 million equity, ~USD 110 million debt) since 2022 founding, including a USD 105-130 million Series A in late 2025
Technology
HTGR — High-Temperature Gas Reactor

About

Valar Atomics is developing grid-independent nuclear energy systems for heavy industrial power, hydrogen, data-center power, and clean hydrocarbon fuel production. Its core technology is a Generation IV high-temperature gas reactor architecture using TRISO fuel, graphite moderation, and helium cooling; Ward 250 is its reactor test program. On November 17, 2025, Valar Atomics and Los Alamos National Laboratory announced that the NOVA Core achieved zero-power criticality at the Nevada National Security Site, validating key physics models for Ward 250.

Key investors

Private investors

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