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’s mobile 1-megawatt reactors and Heron’s 5-megawatt transformers target America’s power-delivery bottleneck as data centers expand.
Radiant CEO Doug Bernauer and Heron CEO Drew Baglino, speaking with a16z’s Erin Price-Wright and Erik Torenberg, trace their energy ventures to work at SpaceX and Tesla. Bernauer says Radiant is developing trailer-sized, 1-megawatt microreactors that could reach a site and provide power within 48 hours for five years; the company targets off-grid customers facing costly diesel, not utility-scale generation. Baglino describes Heron Link, a 5-megawatt bidirectional solid-state transformer designed to connect DC sources to 34,000-volt AC distribution, using modular power electronics. Both argue that electricity delivery—not new generation—is the key constraint, and favor factory-built, scalable infrastructure. They discuss nuclear milestones, fuel and waste challenges, and the potential for data centers to support grid economics: their steady demand can raise system utilization and lower average costs, though sudden disconnections can destabilize the grid without better controls.
Chapters
- 0:00Introduction: Doug Bernauer and Drew Baglino met through Elon Musk projects, including Hyperloop
- 3:42Why Radiant Exists: Mars power needs led Doug Bernauer to found Radiant for portable microreactors
- 6:01Why Heron Exists: Drew Baglino sees a three-to-fivefold grid expansion need
- 8:48Demand Surge Explained: AI and electrification raise demand as transmission delivery constrains the grid
- 14:30Nuclear Progress and Hurdles: Radiant targets a full-power 2026 test and one reactor per week
- 18:43Heron Link Explained: 5 MW transformer converts 800–1,500 V DC to 34,000 V AC
- 23:20Heron Link Explained: DC Microgrids, 1-Megawatt Reactors, and Heron’s 40-Gigawatt Factory
- 29:01Nuclear as a Product: Radiant’s Removable Reactors and 80-Acre Tennessee Fuel Site
- 34:57Where Microreactors Fit: Off-Grid Diesel Markets and Nuclear Industry Milestones
- 39:04Where Microreactors Fit: New Mexico Waste Storage and Power-Electronics Supply Chains
- 44:07Data Centers and the Grid: Virginia’s 2-Gigawatt Disconnect and the Delivery Bottleneck
What the full analysis includes
11 chapters · 62 key points · 11 section summaries · mind map
Preview of the first chapter · Introduction: Doug Bernauer and Drew Baglino met through Elon Musk projects, including Hyperloop
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