Building A Nuclear Plant That Can’t Melt Down

In this episode of FYI, Daniel Maguire and Tasha Keeney speak with J. Clay Sell, CEO of X-energy, about the company’s approach to reinventing nuclear power with advanced small modular reactors. Sell explains X-energy’s TRISO fuel and helium-cooled reactor design, why the company believes safety and repeatable construction can drive nuclear costs lower, and how regulatory reform is accelerating deployment. They also discuss X-energy’s partnership with Amazon, the role of AI in nuclear engineering and licensing, competition with China, supply-chain constraints, and Sell’s vision for making nuclear power abundant, affordable, and easy to buy.

• 00:00:00 Highlights and intro
• 00:02:58 Clay Sell's background and X-energy's goal of reinventing how nuclear is deployed
• 00:05:23 Why a pebble-bed, high-temperature gas-cooled design — and moving nuclear down the cost curve
• 00:10:09 TRISO fuel, helium coolant, and why a reactor that can't melt down needs fewer safety systems
• 00:16:44 Building a fuel business alongside the reactor business, and the Nuclear Regulatory Commission (NRC) license for commercial fuel fabrication
• 00:20:01 Why Sell’s believes regulation is no longer the main constraint — construction execution is
• 00:24:00 Amazon's commitment to five gigawatts, and why X-energy is chasing nth-of-a-kind scale over being first
• 00:28:37 Earning community support and social license for plants and data centers
• 00:31:53 Applying AI to nuclear development with Amazon Web Services (AWS), NVIDIA, Idaho National Lab, and the Department of Energy (DOE)
• 00:38:40 Competing with China on advanced reactors, supply-chain buildout, and nuclear as a routine option within a decade

Editing and post-production work for this episode was provided by The Podcast Consultant (https://thepodcastconsultant.com)