Nuclear Power Play Sank on Energy Efficiency Concerns

Market Reaction and Analyst Reassessment

NuScale Power (NYSE: SMR) shares tumbled 6% during Tuesday’s trading session, moving against the broader market momentum where the S&P 500 climbed 0.9% and the Nasdaq Composite gained 0.6%. The decline reflects growing skepticism about near-term growth prospects for the nuclear energy sector.

A research note from UBS analyst Jon Windham contributed to investor unease. While maintaining a “Neutral” stance on the company, Windham significantly reduced his valuation targets, cutting the price objective from $38 to just $20—a reduction of roughly 50%. This adjustment now leaves limited room for upside appreciation from current trading levels. The revised outlook stems from mounting concerns regarding potential liquidity pressures tied to major contract execution challenges.

The Shifting AI Energy Narrative

Throughout 2024 and early 2025, NuScale and other nuclear power companies experienced substantial stock appreciation as investors banked on surging electricity demand from artificial intelligence infrastructure. The prevailing narrative centered on an imminent energy crisis, with data centers requiring unprecedented power capacity to support AI model training and deployment.

That storyline faced unexpected complications this week. Reports emerged that Meta Platforms and Alphabet are in advanced negotiations over a massive semiconductor deal. The chips in question—Alphabet’s TPUs—represent a marked advancement in computational efficiency compared to the GPUs that propelled Nvidia to become the world’s most valuable corporation. These specialized processors consume substantially less power while delivering comparable performance metrics.

The market’s initial reaction suggests investors may be recalculating the trajectory of data center power consumption. If the industry continues transitioning toward more energy-efficient chip architecture, the previously anticipated explosive demand for new nuclear capacity could prove more modest than bullish projections suggested.

Investment Perspective

While some analysts view this chip efficiency development as a potential headwind for nuclear expansion timelines, declaring the entire thesis invalidated may be premature. The concerns circulating among traders appear somewhat exaggerated. Nevertheless, the combination of technical improvements in semiconductor design and analyst repositioning makes the current valuation difficult to justify from a risk-reward perspective.

NuScale may eventually establish itself as a cornerstone of long-term energy infrastructure, but substantial uncertainties remain regarding project timelines, regulatory approval processes, and the actual pace of electricity demand growth. These variables suggest exercising caution on near-term accumulation until clearer visibility emerges on fundamental assumptions.