AI is suddenly colliding with real world limits on water, power and public patience, and the fight over how to regulate it is heating up. That mix of hype and pushback is reshaping expectations for who supplies the pipes, grids and cooling that data centres rely on. This article walks through three US utilities and water infrastructure stocks exposed to that story, and why their role in AI growth could matter for your portfolio.

The stocks covered below are just a starting sample, and the full screen surfaced 9 more companies with equally detailed data centre and infrastructure narratives that are not included in this article. To identify and analyze the highest conviction utilities and water infrastructure stocks serving AI data centre demand, head straight into the US Regulated Utilities & Water Infrastructure Serving Data-Centre Growth screener.

American Water Works Company (AWK)

American Water Works Company is the largest US water utility, running a vast network of treatment plants, mains and pumping stations that provide water and wastewater services to around 3.6 million customers and can also support data centre cooling and wastewater needs. Most of its roughly US$5.3b in revenue comes from regulated businesses, with about US$4.9b generated by its Regulated Businesses segment and US$0.4b from Other activities. The company has a market cap of about US$27.1b, which puts it firmly in large cap territory.

For investors watching how AI growth collides with real world limits on water and permitting, American Water Works Company offers an essential service that regulators still want to expand, not shrink. The company is investing heavily in system upgrades and acquisitions, which could support future cooling and wastewater links to data centres. At the same time, rate cases and supportive comments from policymakers aim to keep those projects financially viable. The flip side is a capital intensive model funded largely with debt, pressure on cash flows to cover dividends, and a valuation that already prices in a lot of reliability. If you want to understand whether that trade off still stacks up, the details behind its earnings engine, balance sheet and data centre exposure are where the real story starts.

American Water Works Company is pouring capital into regulated growth that could reshape how water and wastewater link to AI data centres, yet the real story sits in its balance sheet and cash commitments. Cut through the headline reliability and see how its funding needs and potential data centre upside fit together in the American Water Works Company financial health report

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MGE Energy (MGEE)

MGE Energy is a Madison based public utility holding company that generates and distributes electricity and natural gas, which can underpin growing grid and substation demand from data centres and AI related load. Most of its roughly US$752 million in revenue comes from regulated electric operations at about US$540 million, with gas contributing around US$252 million and non regulated energy about US$46 million, all in the United States. The stock has a market cap of about US$3.1b, putting MGE Energy in mid cap territory for a regulated utility.

Investors looking at MGE Energy get a regulated utility that is already investing in grid, renewable and storage projects that can support heavier, more power hungry users such as data centres, while reporting high quality earnings and rising profit margins. The trade off is a fairly rich valuation, a dividend around 2.3% that is not well covered by free cash flow, and a balance sheet heavily reliant on debt to fund those projects, which raises sensitivity to rates and capital markets. For readers who want a closer look at whether that mix of steady earnings, growing capex and tighter finances still adds up, the detail behind its data centre adjacency and future returns is where the real decision point lies.

MGE Energy is quietly pairing regulated earnings quality with heavy grid investment, yet the real story is how that equation holds up as AI load grows and financing costs bite in the analysis report for MGE Energy

Deep Fission (FISN)

Deep Fission is a US based nuclear technology company developing small modular reactors buried around a mile underground to provide carbon free baseload power for large users such as data centres, heavy industry and cities. The company is still pre revenue and early stage, yet already carries a market cap of about US$509 million, which shows that investors are assigning value to its potential role in meeting AI driven electricity demand.

Deep Fission gives you exposure to one of the most ambitious answers to AI’s power crunch, with underground small modular reactors pitched directly at hyperscale data centres that are struggling to secure reliable, low carbon electricity. Recent milestones around its Gravity Nuclear Reactor pilot program and letters of intent for up to 18.5 GW of potential capacity suggest genuine commercial interest, even as the company reports sizeable losses, a short cash runway and heavy funding needs. With unprofitable operations, declining forecast earnings and a relatively young board and management team, execution and financing risks are significant. Yet that mix of early regulatory progress, data centre focused offtake interest and a US$509 million valuation leaves a lot for investors to weigh up beyond the headline story.

Deep Fission’s underground reactors and early data centre interest are only half the story. See how its funding runway, regulatory path and potential contracts line up in the full narrative for Deep Fission

Curious About What Else You Might Be Missing

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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.