This primer provides basic information on advanced reactors to help the public and stakeholders understand the promise of innovative nuclear technologies. Dozens are under development around the world; this primer focuses on those in the United States and Canada.

This document was originally released in September 2021. The document was updated in July 2022.

In July 2022, the Nuclear Innovation Alliance (NIA) released a new report, “Advanced Nuclear Reactor Technology: A Company Compendium” and an update for their “Advanced Nuclear Reactor Technology: A Primer” and hosted a webinar for their release. The NIA's new and updated reports provide information, resources and insights into advanced nuclear technology innovation and commercialization. They should serve as resources for investors, reporters, policymakers, regulators and others who want to learn more about advanced nuclear technologies and the key players building this industry.