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Rolls Royce Holdings And 2 Top Nuclear Energy Stocks

Simply Wall St·09/17/2026 08:28:10
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The Federal Reserve just raised US interest rates for the first time in over three years, and signaled that inflation is still front and center. Higher borrowing costs can pressure many assets, but they also shine a spotlight on businesses tied to reliable electricity, where demand linked to AI and climate goals is driven more by necessity than sentiment. This article walks through three stocks from our nuclear power shortlist that fit that story.

The stocks in this piece are just a small sample of the opportunities tied to nuclear power and AI driven electricity demand, with the full Nuclear Renaissance screen surfacing 88 more companies with equally compelling stories that are not covered here. To go deeper into this theme, head straight into the Nuclear Renaissance screener to identify, compare, and analyze the highest conviction ideas on your own terms.

Rolls-Royce Holdings (LSE:RR.)

Overview: Rolls-Royce Holdings designs and services mission-critical power and propulsion systems, including submarine nuclear power plants and naval reactors, alongside civil and industrial engines.

Operations: Rolls-Royce generates about £11.8b from Civil Aerospace, £5.5b from Power Systems, and £5.0b from Defence, with minimal other contributions.

Market Cap: £119.6b

Rolls-Royce matters for the Nuclear Renaissance theme because its nuclear propulsion know-how links directly to the kind of always-on power infrastructure AI and climate commitments rely on.

"A significant portion of current narrative and valuation appears premised on Power Systems segment growth, especially the data center power generation boom, continuing at near-peak rates (20%+ per year) as cloud and AI infrastructure expand."

What happens to Rolls-Royce’s rerating story if a single key assumption about long-term power demand or funding costs breaks?

If that question is on your mind, read the full narrative for Rolls-Royce Holdings to see how the rerating thesis shifts as power demand, funding costs and defence cycles decouple.

LSE:RR. Earnings & Revenue Growth as at Sep 2026
LSE:RR. Earnings & Revenue Growth as at Sep 2026

X-Energy (XE)

Overview: X-Energy develops the Xe-100 small modular nuclear reactor and TRISO-X fuel to supply 24/7 carbon-free power for grids and energy-hungry data centers.

Operations: X-Energy reports about US$150 million of revenue from Electric Equipment, with roughly US$165 million generated in the United States.

Market Cap: US$6.1b

X-Energy is closely linked to the Nuclear Renaissance theme because the Xe-100 and TRISO-X combination is designed for always-on, carbon-free electricity that can serve AI data centers and heavy industry where outages are not an option. Rapid top-line expansion and DOE cost-share backing indicate significant scale potential, but the overall situation depends on how one capital intensive step affects margins and contract visibility.

That funding and margin chain is exactly what the analysis report for X-Energy unpacks, including where execution risk could either accelerate or stall the X-Energy story.

NasdaqGS:XE Earnings & Revenue Growth as at Sep 2026
NasdaqGS:XE Earnings & Revenue Growth as at Sep 2026

NuScale Power (SMR)

Overview: NuScale Power develops small modular nuclear reactors and full lifecycle services to deliver 24/7 carbon-free electricity for large power users.

Operations: NuScale Power reports about US$11 million of Utilities, Electric revenue, all generated from customers in the United States.

Market Cap: US$3.6b

NuScale Power taps directly into the Nuclear Renaissance theme by offering compact reactors and full-service support aimed at backing AI driven grids with steady, carbon-free output. This places significant importance on future project wins compared to the small revenue base visible today.

"NuScale's involvement in the RoPower 6-module small modular reactor (SMR) power plant in Romania indicates future meaningful revenue and cash flow through its partnership in the Fluor-led Front-End Engineering and Design (FEED) Phase 2."

What investors have to weigh is how a single shift in contract timing and funding terms could reshape that future revenue curve.

That contract risk is only one piece, and the full narrative for NuScale Power shows how NuScale Power’s project pipeline, capital needs and potential upside really fit together.

NYSE:SMR Earnings & Revenue Growth as at Sep 2026
NYSE:SMR Earnings & Revenue Growth as at Sep 2026

Seeking Alternatives Before The Crowd?

Fresh themes can move from quiet to breakout before most investors even notice. Use that window while it still matters and before momentum gets fully caught. Act now.

  • Spot fast-moving smaller opportunities by scanning the 13 elite penny stocks with strong financials that pair higher risk with solid fundamentals before wider attention sends volatility flying.
  • Ride structural demand shifts by tracking power-hungry infrastructure through the 60 AI infrastructure stocks while these picks are still under the radar for now.
  • Anchor your portfolio with steady cash generators using the 1 dividend fortresses to focus on payouts that may continue even when headlines turn rough.

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.