AI, Data Centers, and the Infrastructure Needed to Power Them | a16z
a16z Deep Dives · 2026-03-31 · 48 min
https://www.youtube.com/watch?v=1n5xlfRLw3cVideo summary
Radiant targets 1MW portable reactors, while Heron Link modernizes the grid with 5MW solid-state power conversion.
Radiant founder Doug Bernauer and Heron founder Drew Baglino argue that America’s energy crisis is primarily a delivery problem, not a generation problem. Radiant is developing trailer-sized, 1MW microreactors that can arrive off-grid, power up within 48 hours, and operate for five years—equivalent to roughly 2 million gallons of diesel. Heron’s first product, Heron Link, is a 5MW bidirectional solid-state transformer converting 800–1,500V DC to 34,000V AC, using modular power electronics and software to make the grid more flexible. Both companies favor factory manufacturing over field-built infrastructure: Heron plans a 40GW annual factory, while Radiant is building reactors as mass-produced products. They also contend that data centers can ultimately benefit the grid by increasing utilization, provided software and controls prevent large instantaneous load dropouts such as a reported 2GW Virginia event.
Chapters
- 0:00Introduction: Grid Delivery Bottlenecks and Doug Bernauer and Drew Baglino’s Shared Elon Projects
- 3:42Why Radiant Exists: Doug Bernauer’s 2026 Full-Scale Microreactor Goal
- 6:01Why Heron Exists: Drew Baglino’s Three-to-Fivefold Grid Expansion Thesis
- 8:48Demand Surge Explained: AI, Reindustrialization, and Decentralized Power Networks
- 14:30Nuclear Progress and Hurdles: Radiant’s 2026 Full-Power Reactor and Five-Year Trailer Unit
- 18:43Heron Link Explained: 5-Megawatt Bidirectional Solid-State Transformer
- 23:20Heron Link Explained: 40-Gigawatt Factory and DC Microgrids
- 29:01Nuclear as a Product: Factory-Built, Mobile Reactors with Meltdown-Proof Fuel
- 34:57Where Microreactors Fit: One-Megawatt Off-Grid Power for Expensive Diesel Markets
- 39:04Where Microreactors Fit: Nuclear Waste Repositories and Power-Electronics Supply Chains
- 44:07Data Centers and the Grid: Two Gigawatts of Virginia Load and Delivery as the Bottleneck
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