Southern (SO) stock is in focus after regulators approved a 20 year license renewal for the Edwin I. Hatch nuclear plant, extending operations at both reactors into the 2050s.

Southern stock has eased in recent weeks, with the share price down 1.9% over the last day and 3.8% over 90 days. Its 1 year total shareholder return of 7.8% and 5 year total shareholder return of 81.1% point to momentum that has built over time alongside recent capital raising steps such as the shelf registration and at the market equity program.

If this nuclear license renewal has you thinking more broadly about energy and infrastructure, it could be a good moment to scan other potential opportunities in the 88 nuclear energy infrastructure stocks

So with Southern stock easing in the short term but showing multi year total returns and fresh equity issuance in the mix, is the current price underestimating future nuclear backed cash flows, or is the market already pricing in that growth?

Preferred P/E of 23.9x: Is it justified?

On traditional metrics, Southern stock currently trades on a P/E of 23.9x, which sits above both industry and peer averages and implies investors are paying a premium for each dollar of current earnings.

The P/E ratio compares the share price to earnings per share and is widely used for established utilities where profits are a key focus. For a company like Southern, which reports high quality earnings, forecast profit growth of 10.43% per year and annual revenue growth of 5.1%, a higher P/E can reflect the market assigning value to the size and perceived reliability of its $30.2b revenue base and $4.4b of net income.

What stands out is how this premium compares to benchmarks. Southern's 23.9x P/E is higher than the US Electric Utilities industry average of 21.8x and also above the peer average of 21.3x, suggesting the market is pricing Southern as a higher quality or more resilient utility than many of its closest comparables. However, when set against the estimated fair P/E of 25.4x, the current multiple sits below the level that regression analysis indicates the market could move toward if this fair ratio view proves influential.

Result: Price-to-Earnings of 23.9x (OVERVALUED)

However, Southern still faces risks, including potential nuclear project cost pressures and regulatory shifts that could affect returns on its $106.3b market value and regulated assets.

Another view on Southern stock: what the DCF says

While the P/E of 23.9x looks expensive against industry and peer averages, the SWS DCF model paints Southern as overvalued too, with the current $92.53 share price sitting far above an estimated future cash flow value of $5. That is a big gap, so which signal should matter more for you?

Simply Wall St performs a discounted cash flow (DCF) on every stock in the world every day (check out Southern for example). We show the entire calculation in full. You can track the result in your watchlist or portfolio and be alerted when this changes, or use our stock screener to discover 48 high quality undervalued stocks. If you save a screener we even alert you when new companies match - so you never miss a potential opportunity.

Next Steps

If this mix of premium valuation signals and contrasting fair value views on Southern leaves you unsure, consider reviewing the detailed analysis for yourself with the 1 key reward and 3 important warning signs

Looking for more investment ideas beyond Southern stock?

If Southern has sharpened your focus on where capital could work harder, do not stop here, you could miss other stocks that better fit your goals.

• Spot potential value opportunities early by scanning companies trading at a discount using the 48 high quality undervalued stocks.
• Prioritize resilience by focusing on businesses with stronger finances through the solid balance sheet and fundamentals stocks screener (48 results).
• Target reliable income streams by reviewing companies offering robust payouts in the 8 dividend fortresses.

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.