Google and Kairos Power are set to build a small modular nuclear reactor connected to the Tennessee Valley Authority grid by the end of the decade, a major milestone for the Big Tech giant, which plans to harness nuclear power for artificial intelligence. 

The two companies revealed their collaboration with the federally owned utility on Monday morning, saying Kairos Power’s Hermes 2 Plant in Oak Ridge, Tennessee, will generate up to 50 megawatts of power.