For more than a month in total, 12 metric tons of molten salt coursed through pipes at Kairos Power in Albuquerque, New Mexico.

The company is developing a new type of nuclear reactor that will be cooled using this salt mixture, and its first large-scale test cooling system just completed 1,000 hours of operation in early January. This is the second major milestone for Kairos in recent weeks. In December, the US Nuclear Regulatory Commission granted a construction permit for the company’s first nuclear test reactor.  

Nuclear power plants can provide a steady source of carbon-free energy, a crucial component in addressing climate change. But recent major nuclear installations have been plagued by delays and skyrocketing budgets. Kairos and other companies working on advanced reactor designs hope to revive hopes for nuclear power by presenting a new version of the technology that could cut costs and construction times.

Kairos’s technology and construction approach are “just fundamentally different” from current commercial reactors, says Edward Blandford, cofounder and chief technology officer of Kairos.

To read more, click here.