Overview

X-energy is a pioneering American nuclear technology company founded in 2009 by entrepreneur and engineer Dr. Kam Ghaffarian. The company specializes in developing advanced small modular reactors and proprietary nuclear fuel technology to deliver safe, affordable, and carbon-free energy. X-energy’s flagship product, the Xe-100, is a Generation IV high-temperature gas-cooled pebble-bed reactor capable of producing 80 megawatts of electrical power per unit. The reactor operates using X-energy’s innovative TRISO-X fuel, which seals uranium particles in protective coating to make nuclear meltdowns impossible. With over $1.8 billion in total funding and partnerships with major corporations including Amazon, Dow, and Centrica, X-energy has secured an impressive orderbook of more than 11 gigawatts representing approximately 144 small modular reactors. The company is building North America’s first commercial TRISO-X fuel fabrication facility in Oak Ridge, Tennessee, and has received significant support from the U.S. Department of Energy’s Advanced Reactor Demonstration Program.

Products & Technology

• Xe-100 Reactor: Fourth-generation high-temperature gas-cooled small modular reactor producing 80 MW per unit.
• TRISO-X Fuel: Proprietary fuel technology using spherical pebbles with 20% enriched uranium in protective coating.
• Modular Design: Road-transportable reactor modules enabling rapid deployment and cost control.
• 60-Year Lifespan: Continuous operation without fuel interruption for six decades.
• Multi-Unit Plants: Scalable configurations from 320 MW to 960 MW four-pack installations.
• Fuel Fabrication Facility: First-in-nation TRISO-X fuel manufacturing plant in Oak Ridge, Tennessee.
• Process Heat Applications: Flexible design for both electricity generation and industrial heat needs.

2024-2025 Highlights

• Raised $700M Series D led by Jane Street with participation from ARK Invest (Nov 2025).
• Secured 11 GW orderbook representing approximately 144 SMR units.
• Amazon invested $500M and committed to 5+ GW deployment by 2039 (Oct 2024).
• Partnership with Energy Northwest for 320-960 MW project in Washington State.
• Agreement with Dow Inc. for four-unit Xe-100 plant at Texas Gulf Coast facility.
• Centrica partnership to deploy 6 GW of capacity in the United Kingdom.
• Began vertical construction of TRISO-X fuel fabrication facility in Oak Ridge.
• Strategic partnership with Korea Hydro & Nuclear Power and Doosan Enerbility.

Funding Rounds