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SMR order book swells on AI power demand: Oklo-Switch 12GW, Rolls-Royce wins Sweden

Data-center developers and European utilities lock in small modular reactors years before first concrete, betting on factory-built nuclear to feed compute and grids

Energy·AI· active The Long Game·Whose Money ·11 takes ·
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The split

The same story, as told by newsrooms in different countries. Their words, attributed and linked.

United States

Utility Dive

“Oklo could deploy 12 GW of new reactor capacity over the next 20 years through a master power agreement with Switch.”

US power marketsread the original ↗

United Kingdom

New Civil Engineer

“Three reactors of 470MW each could produce around 12TWh of fossil-free electricity per year for southern Sweden.”

engineering/infrastructureread the original ↗

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Summary

Small modular reactor commitments are stacking up well ahead of first concrete. Sweden's Videberg Kraft (80% Vattenfall) picked Rolls-Royce SMR to build three 470MW units on the Värö peninsula, its first new nuclear in 40+ years, extending Rolls-Royce wins at UK Wylfa (up to eight units) and in Czechia. In the US, Oklo signed a master agreement with data-center developer Switch for up to 12GW of Aurora reactors over 20 years, part of a >14GW pipeline. Demand is driven by AI Electricity load and grid-supply shortfalls. Execution and first-of-a-kind cost risk remain unproven; most output lands in the 2030s.

By the numbers

  • 12 GW, Oklo-Switch master agreement, over 20 years.
  • 3 × 470 MW, Rolls-Royce SMRs selected for Sweden (~12 TWh/yr).
  • Up to 8, Rolls-Royce units possible at Wylfa, UK.

  • 14 GW, Oklo's stated customer pipeline.

  • Mid-2030s, earliest grid delivery for most of these orders.

Why it matters

AI compute and grid shortfalls have turned SMRs from slideware into a contracted pipeline, with tech buyers and utilities pre-committing gigawatts. But none of these designs is yet built at commercial scale, the gap between order book and operating fleet is the whole story.

What to watch

  • First-of-a-kind construction cost and schedule on any SMR design.
  • Whether data-center PPAs convert into financed, sited projects.
  • Regulatory approvals (NRC, ONR) and HALEU/LEU fuel availability.

The briefing, by email