Constellation Energy (CEG) Stock: Retail Giant’s Historic Nuclear Agreement Signals Turnaround

Key Takeaways

• CEG shares have declined 26.2% in 2026, with the stock last trading at $270.26
• Discounted cash flow analysis indicates an intrinsic value of $484.34, implying 44.2% undervaluation
• The stock’s P/E ratio of 25.46x sits below its calculated fair value multiple of 32.85x
• Retail giant Walmart inked its inaugural nuclear energy contract with Constellation for 176 megawatts from Dresden facility in Illinois
• Bernstein SocGen launched coverage with an outperform recommendation, highlighting CEG’s 22-gigawatt nuclear portfolio and Calpine integration

Constellation Energy has faced headwinds throughout 2026 based on share price performance. The stock settled at $270.26, representing a 26.2% year-to-date decline and a 15.3% loss over the trailing twelve months. This downturn has renewed attention on valuation metrics among nuclear energy sector observers.

Constellation Energy Corporation, CEG

While recent performance has disappointed, the three-year total return remains impressive at 203.6%, underscoring the stock’s longer-term trajectory.

A DCF analysis conducted by Simply Wall St establishes an intrinsic value estimate of $484.34 per share for CEG. This creates a 44.2% differential from current trading levels, suggesting material undervaluation. The two-stage free cash flow to equity framework incorporates trailing twelve-month FCF of approximately $601 million and forecasts cash generation expanding to roughly $7.3 billion by decade’s end.

From an earnings multiple perspective, CEG carries a P/E ratio of 25.46x. While this exceeds both the Electric Utilities sector average of 21.62x and peer group median of 21.43x, Simply Wall St’s proprietary “Fair Ratio” calculation for CEG stands at 32.85x after adjusting for company-specific growth dynamics and risk factors. Relative to this benchmark, the current valuation appears attractive.

Historic Retail Nuclear Partnership

Monday brought significant commercial news. Constellation and Walmart unveiled a comprehensive nuclear energy procurement agreement encompassing approximately 176 megawatts of wholesale power from the Dresden Clean Energy Center located in Illinois. The arrangement includes 30 megawatts of incremental capacity expansion.

Walmart’s commitment involves purchasing electricity, environmental credits, and capacity across dual 15-year contracts commencing in 2029 and 2030. This marks the retail behemoth’s maiden nuclear power procurement and represents one of the pioneering agreements linking a major American retailer with nuclear generation infrastructure.

The contracted power will service a technologically advanced perishable goods distribution facility that Walmart is constructing in Belvidere, Illinois. The transaction additionally enables planned efficiency enhancements at Dresden, which involve operational improvements that boost generation from current reactor units.

The Dresden Clean Energy Center operates under licenses extending through 2049 and 2051. Constellation secured license renewals for these units in December 2025. The installation sustains employment for over 1,100 workers.

Wall Street Perspectives and Corporate Developments

Bernstein SocGen recently launched research coverage on CEG with an outperform designation. The investment firm emphasized Constellation’s 22-gigawatt nuclear generation portfolio and its strategic Calpine acquisition as foundational elements supporting the bullish thesis.

Calpine, which now functions as a Constellation operating segment, finished a 25-megawatt geothermal capacity expansion at The Geysers installation in California. This enhancement will deliver power to more than 25,000 residential units on an annual basis.

Constellation separately disclosed a secondary equity offering totaling 11 million shares priced at $281 apiece, though the corporation will not retain any funds from this transaction.

William Blair modified its data center and power infrastructure index rating to 75 from a prior 78, citing headwinds in data center development timelines and electricity availability limitations. The research house simultaneously increased its projection for the domestic data center power supply-demand imbalance expected in 2030.

CEG commands 55 gigawatts of aggregate generating capacity spanning nuclear, natural gas, geothermal, hydroelectric, wind, and solar assets.

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