Nuclear Startup X-Energy Files for IPO as AI Data Center Demand Surges

Nuclear startup X-Energy pursues a Nasdaq listing (XE) amid massive deals with Amazon and Talen Energy to power AI data centers with small modular reactors.

By: AXL Media

Published: Mar 25, 2026, 4:10 AM EDT

Source: Bisnow

The Move to Public Markets: Ticker "XE"

On March 20, 2026, Rockville-based X-Energy submitted its S-1 filing to the SEC, aiming for a Nasdaq listing under the ticker symbol XE. The IPO, estimated to raise approximately $300 million, comes after a successful $700 million Series C-1 funding round in late 2025. This financial transition signals that advanced nuclear technology is moving from the experimental phase into a commercially investable infrastructure asset, driven by the urgent need for carbon-free, baseload power.

The Amazon Partnership and 5 GW Goal

A central pillar of X-Energy's growth is its deep-rooted partnership with Amazon. In 2024, Amazon anchored a $500 million funding round for the startup, leading to a collaboration aimed at bringing more than 5 gigawatts (GW) of new nuclear power online in the U.S. by 2039.

Initial Project: A 320-megawatt (MW) four-unit plant in partnership with Energy Northwest near Richland, Washington.

Scalability: The Washington site, known as the Cascade Advanced Energy Facility, has the option to expand to 12 units (960 MW).