The nation's largest public utility plans to buy power from an upcoming advanced nuclear plant to help fuel Google data centers in Tennessee and Alabama, according to a deal announced Monday.

The Tennessee Valley Authority agreed to buy electricity from a small nuclear power plant that’s expected to go into service in 2030 and will help power data centers owned by Alphabet Inc.’s Google.

The reactor that will help power Google also a represents a first for the U.S. Hermes 2, which will be Kairos' second test reactor in Tennessee, will be the first power-producing advanced nuclear rea...