TerraPower’s bid to start energy island construction gets EA/FONSI

May 12, 2025, 9:30AMNuclear News
An image of the energy island and the nuclear island of a Natrium reactor. (Image: TerraPower)

The Nuclear Regulatory Commission staff has concluded—with an assist from a Department of Energy environmental assessment released in February—that no environmental impact statement is needed for an exemption request from TerraPower that would allow the company to begin construction of the energy island of its planned Natrium sodium fast reactor in Kemmerer, Wyo. The NRC’s EA and finding of no significant impact (EA/FONSI), published on May 7, could clear the way for significant construction to begin while the NRC continues to review TerraPower’s construction permit application.

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