Wall Street’s Nuclear Bet Has One Massive Problem Nobody Wants to Talk About

Everyone in Washington loves nuclear power right now. Republicans love it because it annoys environmentalists. Democrats love it because AI needs electricity, and AI is the only thing they love more than hating fossil fuels. The Pentagon literally airlifted a microreactor to Utah on a C-17 last month — the military equivalent of flexing on Instagram.

When both political parties agree this enthusiastically about anything, experienced investors know to check their wallets. The last time we had this much bipartisan energy consensus was ethanol. Corn got expensive, bourbon got political, and nobody’s car ran better.

Here’s the investment thesis in a nutshell: AI data centers are projected to double their electricity consumption by 2030. Nuclear is the only carbon-free source that runs 24/7 — no intermittency problems, no praying for wind. That makes nuclear plants strategic national assets overnight, and Wall Street has been pricing them accordingly.

Constellation Energy — the largest nuclear fleet operator in the U.S. — has been the poster child. Since spinning off from Exelon in 2022 at $53 a share, CEG has ripped to roughly $282, a 430% gain in four years. It hit an all-time high of $403 in October 2025 before pulling back. The company now generates about 10% of all carbon-free electricity in America, serves three-quarters of the Fortune 100 through its retail arm, and is restarting Three Mile Island Unit 1 with Microsoft’s backing. That last detail alone tells you how desperate Big Tech is for baseload power.

But here’s where the hype meets a brick wall. America’s nuclear renaissance has everything — political support, corporate demand, investor enthusiasm — except three critical things: uranium supply, skilled labor, and an actual plan.

The U.S. currently imports roughly 95% of its uranium, with Russia and its allies controlling a significant chunk of global enrichment capacity. New domestic mining and enrichment facilities take years to build, and the supply chain simply isn’t ready for a nuclear buildout at the scale everyone’s projecting. Meanwhile, the specialized welders, engineers, and construction crews needed to build or restart reactors are in desperately short supply. The average nuclear plant worker is aging out, and training replacements isn’t something you can fast-track with a press release.

Then there’s the timeline problem. Small modular reactors — the technology everyone points to as the future — remain years away from commercial deployment at scale. Traditional large reactor construction takes a decade or more and routinely blows past budgets. The Vogtle Plant in Georgia, America’s most recent nuclear build, came in $17 billion over budget and seven years late. That’s not a typo.

None of this means nuclear is a bad long-term bet. Constellation’s financials are genuinely impressive — $9.39 in adjusted earnings per share for 2025, a disciplined 0.60 debt-to-equity ratio, and $25.5 billion in trailing revenue. Competitors like Vistra and Talen Energy are also positioning aggressively. The demand is real and growing.

But at a trailing P/E of 38-45x, Constellation is priced for a future that assumes everything goes right — supply chains scale, regulators cooperate, construction stays on budget, and AI power demand materializes on schedule. That’s a lot of assumptions stacked on top of each other in an industry with a spectacular track record of things not going according to plan.

The smart play here isn’t to dismiss nuclear energy stocks — it’s to size your position honestly. This is a decade-long infrastructure story, not a quick trade. And decade-long stories have a way of testing your patience in ways that quarterly earnings calls never prepare you for.