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.

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.