The Physical Stack
← Full stack narrative
03 · Corescroll = depth

Nuclear / SMR Reactors

Firm carbon-free baseload for the AI grid

24/7

firm power — the attribute intermittent renewables cannot fake alone

AI and electrification need always-on megawatts. Small modular reactors aim to industrialize nuclear the way factories industrialized everything else: repeatable units, not one-off cathedrals.

Depth strataL1/4
  1. Civil boundaryL1

    Pad, containment, defense-in-depth shells

    SMR shrinks the pad; safety language stays multi-barrier

    Licensing and site are as hard as reactor physics

  2. Vessel & latticeL2

    Pressure boundary around fuel geometry

  3. Pellet chemistryL3

    Ceramic UO₂ energy density in centimeters

  4. Neutron economyL4

    Neutrons moderate, absorb, or induce the next fission

Mechanism beats (4)
  1. 1
    Fission → heat → steam → electrons

    Neutrons split heavy nuclei; heat raises steam (or drives advanced coolants); turbines spin generators. The physics has not changed — the packaging has.

  2. 2
    Containment layers

    Fuel cladding, reactor vessel, containment building. Defense-in-depth is the design language: multiple independent barriers to release.

  3. 3
    SMR = factory modules

    50–300 MWe units built in factories, shipped, and stacked. The bet is learning curves and parallel construction vs. decade-long mega-projects.

  4. 4
    Load-follow & co-location

    New designs target co-location with data centers and industrial heat loads — nuclear as a private baseload peer, not only a utility asset.

Scale

One SMR footprint can be a fraction of a gigawatt plant

same firm output, modularized site plan

Stakes

Licensing, fuel, and first-of-a-kind cost

If SMRs clear the first commercial hump, they become the only scalable firm zero-carbon option that matches AI load shapes.

spatial stageCore → micro
loading depth
PAD · SMR vs GW FOOTPRINT
Depth · Plant / SMR pad

SMRs shrink the pad; physics of fission does not shrink.

Containment sits on a civil pad sized for safety and heat rejection

3.0e+2 m
10²–10³ m civil works
scroll 0%
macroorders of magnitudemicro
  1. Plant / SMR pad
  2. Containment
  3. Pressure vessel
  4. Fuel assembly
  5. Fuel pellet
  6. Fission event
  7. Neutron economy

Enterprise decision brief

From technical spectacle to an executable decision.

Designed for

Industrial energy buyers · data-center developers · advanced-energy teams

Which load, site, licensing path, fuel assumption, and delivery model make firm nuclear power an executable program rather than a capacity placeholder?

01 · Operating model

  • ↳Load shape and co-location boundary
  • ↳Licensing, fuel, and vendor dependencies
  • ↳Construction sequence and first-of-a-kind risk
  • ↳Grid interface, heat use, and operating authority

02 · Decision artifacts

  • ↳Program dependency map
  • ↳Load and site boundary brief
  • ↳Risk-gated development roadmap
  • ↳Decision register with evidence owners

03 · Diligence questions

  1. 01Which assumption depends on a regulator, fuel supplier, or OEM?
  2. 02What is the safe and commercial boundary of co-location?
  3. 03Which milestone converts the program from option to commitment?

Governance boundary

This is not reactor design, licensing advice, or a safety case. Nuclear programs require qualified vendors, regulators, owner-operators, and jurisdiction-specific engineering.

Scope a decision brief →

Licensing, fuel, and first-of-a-kind cost

Regulatory pathways and HALEU fuel supply are as decisive as reactor physics. FOAK projects absorb cost overruns; NOAK units need the learning curve to stick.

If SMRs clear the first commercial hump, they become the only scalable firm zero-carbon option that matches AI load shapes.

Traditional plants are 1+ GWe civil works. SMRs trade unit size for repetition — the scale play is manufacturing volume.