Natrium

In Development

Overview

Sodium-cooled fast reactor with integrated molten salt energy storage, enabling flexible output from 345 MWe to 500 MWe peak.

Demonstration plant under construction in Kemmerer, Wyoming — NRC construction permit issued March 2026, targeting commercial operation by 2031.

Electrical Output

345 MWe (baseload)

Peak Output

500 MWe (with storage)

Reactor Type

Sodium-cooled fast reactor

Energy Storage

Molten salt (GigaWatt-hour scale)

Demo Plant Location

Kemmerer, Wyoming

Target Operation

2031