Analysts Clash Over Constellation Energy as Grid Concerns Weigh on AI Nuclear Narrative

Constellation Energy’s stock is caught in a tug-of-war between two deeply conflicting narratives. On one side, the company’s nuclear fleet is positioned as an irreplaceable power source for the AI boom, with record revenue and fat long-term contracts. On the other, grid stability warnings from the regional transmission operator and a sharp analyst downgrade have sent shares tumbling nearly 30% since the start of the year. The result: a market that cannot decide whether the stock is a screaming buy or a value trap.

The immediate jolt came from PJM Interconnection, the grid operator serving 67 million people across the US Mid-Atlantic and Midwest. At a recent meeting, PJM voiced serious concerns about the long-term reliability of its network as energy-hungry data centers pile on demand. That warning spooked investors enough for one large investment bank to slash its price target on Constellation from $348 to $297 and downgrade the stock to neutral, questioning the rich premium the market had awarded the nuclear-plus-AI story.

Yet even as that sell-off unfolded, a rival camp declared the pullback a historic entry point. Zacks Investment Research named Constellation a top pick, projecting upside of as much as 70%. The divergence in analyst targets is stark: the consensus sits near €312.82 (approximately $340), implying a 42% gain from current levels, while the bears argue the stock is fairly valued after the recent retreat.

Should investors sell immediately? Or is it worth buying Constellation Energy?

Shares have shown early signs of steadying. On the latest trading session, the stock climbed 3.66% to €219.50, recovering from a 52-week low of €201.40 set in early July. The relative strength index now stands at 45.6, having slipped out of deeply oversold territory but still well below the 50-day moving average. The next technical hurdle is the 100-day line around €247.

The fundamental picture underpinning the bull case is robust. First-quarter 2026 revenue hit a record $11.12 billion, a 64% surge year-over-year, fueled partly by the January acquisition of Calpine, which added 55 gigawatts of capacity. Constellation’s nuclear fleet — the largest in the US at nearly 32,000 megawatts — operates with a 92.3% capacity factor, precisely the steady, carbon-free power hyperscalers demand. The company has already locked in long-term power purchase agreements with giants like Walmart and is increasingly positioning itself as a provider of power-as-a-service for AI infrastructure.

Management has also signaled confidence through capital-allocation moves. The dividend was recently raised by 10%, and Constellation targets annual earnings-per-share growth of more than 20% through 2029. Over the next two years, the company expects to generate a combined $8.4 billion in free cash flow. The US Department of Energy has added further support, announcing $17.5 billion in loans to upgrade existing domestic reactors — a direct benefit to Constellation’s current fleet rather than unproven small modular reactors.

The disconnect between operational momentum and stock price continues to fuel the analyst debate. The next hard data point for the market will arrive in August, when Constellation reports its second-quarter results. Those numbers will give investors the first real look at how the new power contracts are translating into bottom-line profitability. Until then, the stock remains a battleground between those who see a nuclear-powered AI tailwind and those who fear the grid itself is the bottleneck.

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