{"podcast":{"title":"Sourcery","slug":"sourcery-6853139","podcast_index_feed_id":6853139,"rss_url":"https://anchor.fm/s/f192713c/podcast/rss","website_url":"https://www.sourcery.vc","image_url":"https://d3t3ozftmdmh3i.cloudfront.net/staging/podcast_uploaded_nologo/40429063/40429063-1777331323919-38ab3ebcb33f6.jpg","author":"Sourcery with Molly O'Shea","episode_count":178,"summary":"Interviews with the top Investors, CEOs, & Founders","last_synced_at":"2026-07-22T22:18:35.948107+00:00","page_url":"https://stenobird.com/podcast/sourcery-6853139"},"episode":{"title":"Inside the Factory Using Rocks & Sunlight to Fix AI's Power Problem | Exowatt","slug":"inside-the-factory-using-rocks-sunlight-to-fix-ai-s-power-problem-exowatt","published_at":"2026-04-15T13:36:30+00:00","page_url":"https://stenobird.com/podcast/sourcery-6853139/inside-the-factory-using-rocks-sunlight-to-fix-ai-s-power-problem-exowatt","show_page_url":"https://stenobird.com/podcast/sourcery-6853139","url":"https://podcasters.spotify.com/pod/show/sourcery/episodes/Inside-the-Factory-Using-Rocks--Sunlight-to-Fix-AIs-Power-Problem--Exowatt-e3huonh","audio_url":"https://anchor.fm/s/f192713c/podcast/play/118497457/https%3A%2F%2Fd3ctxlq1ktw2nl.cloudfront.net%2Fstaging%2F2026-3-15%2F422124533-44100-2-6e654c434568a.mp3","summary":"Most announced data centers will never get built. The ones that do are running on gas generators. And the US grid has no answer for what's coming. Hannan Happi, CEO & Co-Founder of Exowatt, joins Sourcery for a rare facility tour of their 40,000 sq ft Miami HQ — walking us through the tech, the team, and why the AI power crisis is far worse than the headlines suggest. Exowatt has raised $140M from a16z, Felicis, Sam Altman, Leonardo DiCaprio, Starwood Capital, Thrive Capital, and more, all betting on a deceptively simple idea: concentrate sunlight with Fresnel lenses, store the heat in rocks at 1,000°C, and dispatch electricity on demand. 24 hours a day, no grid required. Their P3 system is built from sand, dirt, and steel. Like a large magnified glass and a rock. No lithium. No cobalt. No China. Target cost: 1 cent per kilowatt hour. Timestamps (00:00) What is Exowatt? The solar backbone for AI data centers (01:30) Why the US grid simply cannot handle what's coming (02:00) Tour begins: Welcome to Lighthouse Miami — 40,000 sq ft facility (02:45) The P3 explained: three elements, one shipping container (04:00) The founding story: Atomic venture studio and the modular hypothesis (05:30) Why solar thermal hasn't followed solar PV's 99.6% cost decline — until now (07:00) North star: 1 cent per kilowatt hour and where they are today (11:00) Inside the world's largest solar simulator — the sun, indoors (13:00) The Fresnel lens up close: a giant magnifying glass for the sun (15:00) "It's rock science" — the 5-year-old explanation of how it works (17:30) Domestic raw materials (sand, dirt, steel) as the real competitive moat (24:30) The phantom data center problem: most announcements won't get built (26:00) From 100 MW to 10 GW: how data center scale exploded in…","meta_description":"Most announced data centers will never get built. The ones that do are running on gas generators. And the US grid has no answer for what's coming. Hannan…","key_points":[],"chapters":[],"topics":[],"duration_seconds":2411,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/sourcery-6853139/episodes/inside-the-factory-using-rocks-sunlight-to-fix-ai-s-power-problem-exowatt/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/sourcery-6853139/inside-the-factory-using-rocks-sunlight-to-fix-ai-s-power-problem-exowatt.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}