Top 3 Hydrogen Stocks To Watch In October 2026

Attacks on Saudi energy infrastructure have reminded investors how quickly traditional power supply can be disrupted and how exposed many grids remain. That pushes clean backup power and alternative fuels into sharper focus for anyone thinking about long term resilience. Hydrogen fuel cell technology sits squarely in that conversation, and this article highlights three US listed hydrogen fuel cell stocks from our screener that many investors are watching closely right now.

The three hydrogen fuel cell stocks below are just a starting sample, and the full screen surfaced 6 more companies with equally compelling narratives that are not covered here. To identify your own highest conviction ideas across fuel cell developers, component suppliers and system manufacturers, go straight to the Hydrogen Fuel Cell Technology screener.

Cummins (CMI)

Cummins ties the hydrogen fuel cell story directly into real world power needs, from heavy trucks to data center backup, through fuel cell systems that sit alongside its traditional engines and generators, giving the Hydrogen Fuel Cell Technology screener a large scale industrial player.

"The introduction of the HELM engine platforms with options for diesel, natural gas and hydrogen fuels can capture new markets and improve revenue and margins by offering flexible solutions for diverse customer needs, and Cummins now expects the 2027 on highway rollout to support margin positive pricing on new emissions compliant engines."

What happens to that opportunity depends heavily on how one quiet cost pressure shapes future returns from these cleaner power platforms.

That quiet cost pressure is exactly what the full narrative for Cummins unpacks, showing how Cummins could turn regulatory strain into accelerating returns from hydrogen and backup power platforms.

FuelCell Energy (FCEL)

FuelCell Energy leans directly into the Hydrogen Fuel Cell Technology theme through its carbonate fuel cell platforms and Tri-gen systems that produce zero carbon hydrogen for on-site power and microgrids, giving the hydrogen economy story a clear real world footprint across utilities, industrial sites, and data centers.

FuelCell Energy designs and operates high temperature fuel cell and electrolysis systems, earning about US$154 million from fuel cell power plant production and research, and has a market value of roughly US$1.1b.

"While FuelCell Energy is expanding its Torrington facility and targeting 500 megawatts of annualized production capacity by June 2028, current evidence that the company operated at only 37 megawatts in the latest quarter and booked US$17 million of charges on the Fit Energy agreement highlights a risk that added capacity is brought online faster than profitable demand materializes."

What happens to FuelCell Energy’s margins if that gap between planned projects and firm, profitable demand closes more slowly than current expectations assume?

If that risk-reward gap matters to you, read the full narrative for FuelCell Energy to see how FuelCell Energy could turn stalled capacity into accelerating project economics.

PG&E (PCG)

PG&E plays a different role in the Hydrogen Fuel Cell Technology theme, running a massive regulated electric and gas utility while using hydrogen blending and hydrogen ready gas infrastructure pilots to support cleaner fuel cell use across its California service area.

PG&E Corporation serves northern and central California with electricity and natural gas, generating US$25.8b from sale and delivery to customers and carrying a market value of about US$29.4b.

For investors tracking hydrogen fuel cell infrastructure, PG&E offers exposure to how large scale grid operators might weave hydrogen capable gas networks into everyday power service.

"Expanding opportunities for capital investment in grid modernization, wildfire mitigation, and resilience, fueled by both regulatory mandates and the need to serve new electrification and decarbonization requirements, position PG&E to grow its rate base and regulated earnings steadily over the next decade."

What could reshape that earnings path is one unresolved policy decision that may sharply change how PG&E prices risk into future hydrogen ready investments.

That policy swing is exactly what the full narrative for PG&E unpacks, showing how PG&E could turn hydrogen ready grid spending into accelerating, regulated returns that the headline quote only hints at.

Seeking Alternatives Before The Crowd

Fresh themes are building breakout momentum while many investors stay caught watching yesterday’s moves. Scan under the radar ideas now, while it matters, and get in early.

• Target dependable income streams by reviewing a curated mix of high payout opportunities through the 7 dividend fortresses before yields change and others react.
• Hunt for potential compounders by checking a hand picked 20 high quality undiscovered gems list that is still flying below most investors’ radars.
• Explore the next infrastructure wave by filtering a focused group of 43 power grid technology and infrastructure stocks that may benefit if grid spending accelerates, rather than responding only after prices move.

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.

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