The artificial intelligence (AI) boom is fueling a frenzied rally in a derivative investment sector: nuclear energy. As tech giants race to build power-hungry data centers, nuclear power—capable of providing stable, clean baseload electricity—is seen as critical infrastructure for the AI era. This expectation has sent related stocks soaring, yet underlying bubble risks are rapidly accumulating.
According to the U.S. Department of Energy (DOE), data centers accounted for about 4% of the nation’s electricity usage in 2023. With the AI explosion, this figure could triple by 2028. In search of stable and predictable power, giants like Microsoft, Meta, Alphabet, and Amazon Web Services (AWS) have recently signed multi-decade power purchase agreements (PPAs) with nuclear operators such as Constellation Energy and NextEra Energy.
The market has reacted swiftly. Nuclear-focused ETFs (e.g., URA) have significantly outperformed the S&P 500, and individual stock gains have been staggering. However, this frenzy is largely built on a “future narrative.” The vast majority of these deals are not yet delivering power, with real revenue generation still years away. Current stock prices appear to have priced in years of optimistic expectations, eerily reminiscent of the speculative mania during the late-1990s dot-com bubble.
Among the various nuclear-themed stocks, small modular reactor (SMR) developer Oklo (NYSE: OKLO) stands out with the most extreme trajectory, soaring nearly tenfold over the past year. But behind the spectacular gains lies a concerning vacuum of fundamentals:
What justifies its $16 billion market cap? This astronomical valuation rests primarily on letters of intent from government agencies and potential future customer interest, not on firm orders or actual revenue. In other words, Oklo’s valuation is entirely dependent on a distant story: that its advanced SMR design will successfully navigate regulatory approval, construction, and commercialization. Each step carries significant technical, regulatory, and market uncertainty.
While we remain optimistic about nuclear energy’s long-term role in the AI-driven power mix, the recent capital frenzy has severely detached sector valuations from current business realities. When the market shifts from “story-telling” to scrutinizing “profitability” and “execution progress,” companies lacking substantive foundations will face a harsh reckoning.
Much like the dot-com bubble burst in 2000, 2026 could be a key inflection point for nuclear energy stocks. By then, as the first major PPAs enter their delivery phases, it will become clear who is swimming naked. Among the contenders, Oklo—with its extreme disconnect of zero revenue and a multi-billion dollar valuation—appears most vulnerable to a potential crash. For investors, the current nuclear investment feast calls for discernment, not blind following.
