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The recent gas explosion in Lake Dallas and subsequent lawsuit against Atmos Energy (ATO) has pulled fresh attention to the utility, as investors weigh legal, operational, and reputational questions alongside the company’s long term gas distribution business.

See our latest analysis for Atmos Energy.

Alongside the Lake Dallas incident and lawsuit, Atmos Energy has also extended the maturity of two US$1.5b revolving credit facilities. The stock’s recent momentum reflects that mix of legal risk and funding flexibility, with a 90 day share price return of 10.65%, a 1 year total shareholder return of 22.17%, and a 5 year total shareholder return of 113.92%.

If you are assessing how events like this shape opportunity in essential infrastructure, it can be useful to compare Atmos Energy with other grid focused names through our 26 power grid technology and infrastructure stocks

With Atmos Energy trading around US$185.49, near analyst targets but with an indicated intrinsic value discount, the key question is whether the current legal and funding backdrop leaves mispricing or whether markets already assume future growth.

With Atmos Energy last closing at $185.49 against a narrative fair value of $183.00, the current price sits slightly above that long term scenario, which leans heavily on regulated growth and capital spending.

Major multiyear capital investment programs focused on modernizing and expanding pipeline infrastructure, combined with favorable regulatory mechanisms and frequent rate filings, underpin ongoing rate base growth, translating to stable and predictable long term earnings and cash flow. The push for energy reliability, resilience, and emerging decarbonization efforts (e.g., adoption of renewable natural gas, hydrogen blending) positions Atmos to capture new revenue streams and regulatory goodwill, further supporting rate base expansion and long term margin resilience.

Read the complete narrative.

Want to see what this growth story actually assumes? Revenue climbing, margins edging higher, and a future earnings multiple that leans above industry norms all sit inside that fair value case.

Result: Fair Value of $183 (OVERVALUED)

Have a read of the narrative in full and understand what’s behind the forecasts.

However, this depends on regulatory support and capital spending remaining aligned, while higher operating costs and increasing capex could put pressure on future earnings and cash flow assumptions.

Find out about the key risks to this Atmos Energy narrative.

The earlier narrative suggests Atmos Energy is about 1% overvalued relative to a fair value of $183, based on projected earnings and a 24x P/E in 2029. Our DCF model, however, indicates a future cash flow value of $914.25 per share, which is very large compared with the current $185.49 price. How comfortable are you with a situation where the cash flow model and the market are this far apart?

Look into how the SWS DCF model arrives at its fair value.

ATO Discounted Cash Flow as at Apr 2026

ATO Discounted Cash Flow as at Apr 2026

Simply Wall St performs a discounted cash flow (DCF) on every stock in the world every day (check out Atmos Energy 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 63 high quality undervalued stocks. If you save a screener we even alert you when new companies match – so you never miss a potential opportunity.

The mix of legal questions, funding flexibility, and valuation gaps will not stay unresolved forever. Check the data yourself and weigh both sides by reviewing the 3 key rewards and 2 important warning signs

If Atmos Energy is on your radar, do not stop there. Broaden your watchlist with other ideas so you are not relying on a single story.

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 ATO.

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