By OkloLearning Objectives
- Understand microreactor technology and why Oklo targets AI data centers
- Identify Oklo's deployment pipeline (15+ GW order book, Switch + Meta deals)
- Evaluate when Oklo Aurora fits AI infrastructure planning vs NuScale or grid alternatives
What Is Oklo Aurora Microreactor?
Oklo is a Sam Altman-backed advanced nuclear startup developing microreactor powerhouses specifically designed for AI data centers, military bases, remote industrial facilities, and other off-grid applications. The Aurora powerhouse is Oklo's flagship product — a fast neutron reactor generating 15-75 MWe of electrical power, recently uprated from the original 50 MW design to 75 MW to accommodate large data center demand.
Oklo's positioning vs. NuScale: Oklo targets smaller, distributed deployments at customer sites (data centers, military bases) using fast neutron technology and the option to use recycled nuclear fuel. NuScale's VOYGR targets utility-scale baseload (multiple modules per plant up to 924 MW) using more conventional pressurized-water designs. Both fall under "advanced nuclear" but optimize for different deployment patterns.
💡Key Concept
Why microreactors for AI specifically: A single hyperscale AI campus draws as much power as a small city. Building utility-grid transmission to deliver that power adds years to AI deployment timelines. Oklo's pitch: skip the grid. Site a 75 MW microreactor next to (or inside) the data center campus. Direct power purchase agreement, no transmission build-out, faster time-to-power. The bet works only if microreactors hit aggressive cost and deployment timelines — which is what Oklo + Switch + Meta partnerships are testing.
✅Tip
Visit Oklo: oklo.com — sold to utility, hyperscaler, and military customers via Master Power Agreements; first commercial deployment targeted early 2028
Status & Deployment Pipeline
Oklo is in the regulatory + design-approval phase, with major customer commitments already signed.
- Fast neutron reactor
- Capable of using recycled nuclear fuel
- Off-grid focused
- Largest data center developer commitment
- Non-binding agreement signed December 2024
- Drives upsized 75 MW design
- Hyperscaler demand
- Specific terms not public
- Demonstrates AI infrastructure demand
- Idaho National Lab first commercial site
- Targeted criticality by July 4, 2026
- First commercial deployment early 2028
- Recycled nuclear fuel supply chain
- Vertical integration with Oklo reactors
- Long-term cost lever
Customer engagement is typically through Master Power Agreements — long-term off-take commitments where the customer agrees to buy electricity at agreed prices once Oklo reactors come online. Pricing per kWh is contracted privately.
Core Technology
Fast Neutron Reactor Design
Aurora uses fast neutrons (rather than slow thermal neutrons in traditional light-water reactors) and operates at higher temperatures. Fast neutron reactors can use a wider range of fuels — including recycled nuclear fuel from existing reactors — and are inherently more efficient at converting fissile material to energy.
75 MWe Aurora Powerhouse
Originally designed at 50 MW, upsized to 75 MW in 2025 to support AI data center demand. A single Aurora is enough to power a substantial data center directly, eliminating the need for utility-grid transmission build-out. Smaller and more distributed than NuScale VOYGR plants — closer to a "power-the-building" model than "power-the-region."
Recycled Nuclear Fuel
Aurora can run on recycled fuel from spent fuel rods at existing reactors — a massive untapped energy resource (the US alone has enough spent fuel to power tens of thousands of reactor-years). This is a long-term cost and sustainability lever; near-term deployments will use fresh fuel.
Atomic Alchemy Subsidiary
Oklo's Atomic Alchemy subsidiary received an NRC materials license in 2026, building the fuel-cycle infrastructure needed to support recycled-fuel reactor operations at scale. Vertical integration of fuel + reactor is a strategic Oklo bet.
Off-Grid Siting
Aurora is designed for off-grid deployment — siting next to data centers, military bases, remote industrial facilities, or mining operations. Direct power-purchase agreements bypass utility transmission constraints.
Compact Footprint
Aurora's compact design enables siting where utility-scale plants cannot fit. The "powerhouse" can sit on a few acres, vs. the dozens of acres required for traditional nuclear plants.
Strengths
- Sam Altman backing: Founder served as chairman through April 2025 (stepped down to avoid OpenAI conflict-of-interest); investor base includes Hydrazine Capital and Peter Thiel
- 15+ GW order book: Switch up to 12 GW through 2044, Meta agreement on top — hyperscaler demand validated
- Fast neutron + recycled fuel: Long-term cost and sustainability differentiation
- Off-grid siting: Bypasses utility transmission build-out — faster time-to-power for AI campus deployment
- Compact footprint: Smaller than utility-scale nuclear — flexible siting options
- Active NRC progress: Combined license application in late 2025, target criticality July 4, 2026, first commercial deployment early 2028
- Atomic Alchemy fuel cycle: Vertical integration strategy strengthens long-term economics
Limitations & Considerations
- Pre-commercial: No operating commercial reactor yet — first deployment targets 2028
- NRC criticality target: July 4, 2026 criticality target is aggressive; nuclear regulatory milestones often slip
- Smaller scale than utility-class: 75 MW per unit; for gigawatt AI campuses, multiple Aurora units required
- Fast neutron complexity: Less commercial operating experience than traditional light-water reactors industry-wide
- Funding sustainability: Oklo went public via SPAC merger; market valuation fluctuates with timing of regulatory milestones
- Sam Altman conflict-of-interest: Altman stepped down as chairman April 2025 ahead of potential OpenAI energy-supply talks — leadership transition risk
- Competing microreactor designs: Last Energy, X-energy, BWXT, TerraPower competing for similar customer base — Oklo not the only player
Best Use Cases
| Use Case | Why Oklo Aurora Fits | Caveat |
|---|---|---|
| AI data center off-grid power | 75 MW + off-grid siting + Switch / Meta partnerships | First deployment 2028 — long planning horizon |
| Hyperscale AI campus phased rollout | Multiple Aurora units enable gigawatt-class deployments | Order book demonstrates demand but not yet shipped reactors |
| Military / defense bases | Compact + off-grid suits remote facilities | Federal procurement timelines |
| Mining and remote industrial | Long-life baseload at remote sites | Capital intensity may favor grid where available |
| Recycled-fuel operations (long-term) | Atomic Alchemy fuel cycle vertical integration | Long-term roadmap; not relevant for first deployments |
When to choose alternatives:
- Need power before 2028 → grid power, natural gas, large solar + battery
- Need utility-scale baseload (gigawatts per plant) → NuScale VOYGR scales further per plant
- Lower-risk traditional nuclear → existing utility nuclear or large hydro where available
- Renewable-friendly geographies → solar + wind + battery may economically beat early-deployment nuclear
Key Takeaways
- Oklo Aurora is a 75 MWe fast neutron microreactor designed for off-grid AI data center deployment — Sam Altman-backed, with 15+ GW order book including Switch (up to 12 GW through 2044) and Meta agreements
- Original 50 MW design upsized to 75 MW in 2025 specifically to accommodate large AI data center power demand
- NRC combined license application submitted late 2025; target criticality July 4, 2026; first commercial deployment early 2028 at Idaho National Laboratory
- Atomic Alchemy subsidiary received NRC materials license in 2026, building the fuel-cycle infrastructure for recycled-fuel reactor operations
- Best fit for AI data center off-grid power planning on a 2028+ timeline; for power needed sooner, grid + renewables + storage are the practical answer; for utility-scale baseload, NuScale VOYGR scales further per plant
