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Constellation Energy (CEG) Stock Still Looks Cheap Despite Its 166% Run

Simply Wall St·09/10/2026 22:23:04
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Constellation Energy enters this valuation debate with a sharp three year share price gain set against mixed signals from its intrinsic value estimate and broader checks. The Discounted Cash Flow (DCF) work points to a sizeable gap to intrinsic value, while market based multiples look closer to fair and the value score sits squarely in the middle.

  • Over the past 3 years, Constellation Energy has returned about 166.4%, which puts recent weakness into context and raises the bar for any new buyers.
  • The planned US$715m purchase of the Rhode Island State Energy Center may support long term cash generation. However, integration and natural gas exposure can introduce earnings and valuation risk if conditions change.
  • With a value score of 3, the stock screens as a mixed picture rather than a clear bargain or clear overvaluation on the wider set of checks.

The issue now is whether Constellation Energy's current share price already reflects this intrinsic value upside or if there is still room for the valuation to close that gap.

Compare how Constellation Energy stacks up against other potential valuation gaps by running the hand picked 31 high quality undervalued stocks.

Does Constellation Energy Look Undervalued on Cash Flow?

The Discounted Cash Flow (DCF) model used here projects what Constellation Energy might generate in future free cash flow and then discounts those figures back to today. Recent twelve month free cash flow shows an outflow of about $49 million, so the model relies on a shift to growing cash generation over time rather than current levels.

Under those assumptions, the 2 Stage Free Cash Flow to Equity model produces an estimated intrinsic value of about $544 per share. That figure sits well above the current share price, implying roughly a 46.0% discount to the DCF estimate. In addition, the agreed $715 million purchase of the Rhode Island State Energy Center is expected to add more contracted and merchant cash flows to the mix, which makes the gap between today’s price and the model output appear even wider.

On this DCF view, Constellation Energy stock currently appears to be undervalued.

Our Discounted Cash Flow (DCF) analysis suggests Constellation Energy is undervalued by 46.0%. Track this in your watchlist or portfolio, or discover 31 more high quality undervalued stocks.

CEG Discounted Cash Flow as at Sep 2026
CEG Discounted Cash Flow as at Sep 2026

Head to the Valuation section of our Company Report for more details on how we arrive at this Fair Value for Constellation Energy.

Where Does Constellation Energy Sit on Earnings?

P/E works well for Constellation Energy because earnings remain a key anchor for how investors value established utilities. The stock trades on a P/E of about 30.1x, which sits above the Electric Utilities industry average of roughly 20.4x and also ahead of the wider peer group around 20.0x.

The Fair Ratio estimate for Constellation Energy sits near 32.0x. That is only slightly above the current P/E, so the gap between what investors are paying and what this framework suggests as reasonable is not large. For readers, that points to a valuation that is richer than the sector average but broadly aligned with what the model flags based on the company’s profile and risk mix.

On this earnings multiple view, Constellation Energy stock currently appears roughly fairly valued.

NasdaqGS:CEG P/E Ratio as at Sep 2026
NasdaqGS:CEG P/E Ratio as at Sep 2026

See what the numbers say about this price — find out in our valuation breakdown.

The Constellation Energy Narrative: What Would Justify Today's Price?

For Constellation Energy, Simply Wall St Narratives sit between the DCF gap and the richer P/E. They spell out which combinations of future growth, profitability and earnings paths would need to occur for the stock to be worth materially more or materially less than today's price. Each Narrative links its figure to a clear view on how Constellation Energy's growth, margins and risk profile might change, giving you something concrete to revisit as new information arrives.

Community views on Constellation Energy split sharply between a long runway for clean power contracts and growing pressure on a nuclear heavy model.

Bull case: 17% undervalued

"Growing demand for carbon-free, reliable power from large-scale customers such as data centers Meta, Microsoft and corporates Comcast is creating new, longer-term, higher-margin contracts with price premiums…"

Read the full Bull Case to see why Constellation Energy could be undervalued

Bear case: roughly fairly valued

"The accelerating adoption of distributed energy resources including residential and commercial solar, energy storage, and microgrids is expected to reduce grid reliance on large-scale centralized nuclear generation…"

Read the full Bear Case to see why Constellation Energy could be overvalued

Do you think there's more to the story for Constellation Energy? Head over to our Community to see what others are saying!

The Bottom Line

Constellation Energy screens as undervalued on a Discounted Cash Flow (DCF) view, while the P/E suggests pricing that is roughly in line with what peers command. That gap comes from the intrinsic value model leaning heavily on long run cash generation, while the market multiple reflects higher expectations already baked into the share price. With the broader checks pointing to a mixed picture, the key question is whether future cash flows from the current asset base and planned acquisitions materialise strongly enough to justify both the DCF upside and the richer earnings multiple.

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.