Google is one step closer to reaching its nuclear ambitions now that it’s working with public power utility Tennessee Valley Authority (TVA) to purchase electricity from a next-generation reactor. It’s the first power purchase agreement for technology this advanced that a US utility has made, according to the companies.

Kairos Power’s Hermes 2 reactor uses liquid salt cooling for safer, lower-cost nuclear energy. It’s set to power Google data centers by 2030.