Constellation Energy (CEG) just locked in a 20 year nuclear power purchase agreement with Alphabet’s Google, anchoring a long runway of contracted, carbon free supply for energy hungry data centers.
The Google agreement lands after a mixed stretch for Constellation Energy’s stock, with a 1-day share price gain of 4.6% to US$270.74 offset by a year-to-date share price decline of 26.08% and a 1-year total shareholder return that is down 22.23%. At the same time, the 3-year total shareholder return is up 146.36%, suggesting long-term momentum remains intact while recent moves reflect shifting expectations and risk perception around nuclear assets and data center demand.
Scan other nuclear and grid plays that are riding the same data center power theme as Constellation Energy through our hand-picked 42 power grid technology and infrastructure stocks
Constellation Energy now trades at a steep discount to both analyst targets and implied fair value after this pullback. Is that the market prudently pricing nuclear and data center risk, or leaning too far into caution as contracts continue to stack up?
Most Popular Narrative: 22.6% Undervalued
On the most followed narrative, Constellation Energy screens as undervalued with a fair value of $350 against the last close at $270.74. That gap matters because the thesis leans heavily on long-dated contracts with hyperscalers rather than short-term power price swings.
The story from here is straightforward: monetize the nuclear scarcity advantage through long-duration contracts with investment-grade customers (Microsoft for the Crane/Three Mile Island restart, Meta for Clinton, Walmart, and ~920 MW of additional nuclear PPAs signed in Q2 2026 alone, average duration ~18.5 years). Then restart Crane in 2027, pursue uprates and license extensions (Ginna and Nine Mile Point filings already submitted), and use the flexible gas/geothermal assets for reliability and co-located data-center opportunities.
See why 27 investors see Constellation Energy as 23% undervalued.
Result: Fair Value of $350 (UNDERVALUED)
Still, the Constellation Energy story can be knocked off course if uprate projects run over budget or if regulators cap returns on long-dated nuclear contracts.
Find out about the key risks to this Constellation Energy narrative.
Another View: What Constellation Energy’s P/E Is Telling You
The first narrative leans on a fair value of $350, which implies Constellation Energy is undervalued. Yet the current P/E of 27.7x is higher than both the US Electric Utilities industry at 20.3x and a 20x peer average, and only slightly below a 29.7x fair ratio.
That mix of richer pricing versus sector and peers, along with close alignment with the fair ratio, points to a stock where execution risk matters as much as upside. If earnings or nuclear projects stumble, how quickly could that premium unwind?
See what the numbers say about this price — find out in our valuation breakdown.
NasdaqGS:CEG P/E Ratio as at Oct 2026
Next Steps
There are mixed views on Constellation Energy so far. If you want to move past the headlines and make your own call quickly, weigh both sides with 4 key rewards and 2 important warning signs.
Looking for more Constellation Energy style ideas?
If Constellation Energy has you thinking bigger about where capital can work hardest, do not stop at a single ticker. Cast a wider net using focused screeners that surface ideas aligned with your risk tolerance and return goals.
This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.
Companies discussed in this article include CEG.
Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team@simplywallst.com
Source: finance.yahoo.com — article syndicated from the publisher’s feed; all rights remain with the original publisher.
