With a median price-to-earnings (or "P/E") ratio of close to 18x in the United States, you could be forgiven for feeling indifferent about Duke Energy Corporation's (NYSE:DUK) P/E ratio of 19.2x. While this might not raise any eyebrows, if the P/E ratio is not justified investors could be missing out on a potential opportunity or ignoring looming disappointment.

Recent times have been pleasing for Duke Energy as its earnings have risen in spite of the market's earnings going into reverse. It might be that many expect the strong earnings performance to deteriorate like the rest, which has kept the P/E from rising. If you like the company, you'd be hoping this isn't the case so that you could potentially pick up some stock while it's not quite in favour.

If you'd like to see what analysts are forecasting going forward, you should check out our free report on Duke Energy.

Is There Some Growth For Duke Energy?

There's an inherent assumption that a company should be matching the market for P/E ratios like Duke Energy's to be considered reasonable.

If we review the last year of earnings growth, the company posted a worthy increase of 10%. Pleasingly, EPS has also lifted 217% in aggregate from three years ago, partly thanks to the last 12 months of growth. So we can start by confirming that the company has done a great job of growing earnings over that time.

Shifting to the future, estimates from the analysts covering the company suggest earnings should grow by 7.3% per annum over the next three years. With the market predicted to deliver 10% growth each year, the company is positioned for a weaker earnings result.

In light of this, it's curious that Duke Energy's P/E sits in line with the majority of other companies. Apparently many investors in the company are less bearish than analysts indicate and aren't willing to let go of their stock right now. Maintaining these prices will be difficult to achieve as this level of earnings growth is likely to weigh down the shares eventually.

The Bottom Line On Duke Energy's P/E

Typically, we'd caution against reading too much into price-to-earnings ratios when settling on investment decisions, though it can reveal plenty about what other market participants think about the company.

We've established that Duke Energy currently trades on a higher than expected P/E since its forecast growth is lower than the wider market. Right now we are uncomfortable with the P/E as the predicted future earnings aren't likely to support a more positive sentiment for long. Unless these conditions improve, it's challenging to accept these prices as being reasonable.

You need to take note of risks, for example - Duke Energy has 3 warning signs (and 1 which is potentially serious) we think you should know about.

If you're unsure about the strength of Duke Energy's business, why not explore our interactive list of stocks with solid business fundamentals for some other companies you may have missed.

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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.

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team@simplywallst.com