Episode Details

Hook: What if AI’s power problem could be solved with lenses, hot rocks and a shipping container? Original episode: 44 minutes — This summarized version: 12 minutes. On Sourcery, host Molly O’Shea tours Exawatt’s Lighthouse Miami with CEO Hannan Happi to see a practical alternative to grid strain: the P3 modular system that pairs sun-tracking Fresnel optics with thermal rock batteries and Stirling engines to deliver round-the-clock solar power. Learn how engineered rocks store heat at 800–1000°C, why avoiding lithium and rare minerals matters, and how factory-driven design aims to cut costs toward a 1¢/kWh target. Topics covered include renewable energy, energy storage, AI infrastructure, data center power demand, and startup scale-up strategies. Molly and Hannan explain the manufacturing approach, optical and thermal engineering, commercial traction, and the social impact of off-grid, modular solar for hyperscalers. Listen now to get the key ideas—factory tour highlights, technical takeaways, and why Exawatt could reshape power for AI—in minutes.