Nuclear Power, page-243

TVA chose GE-Hitachi’s (GEH’s) BWRX-300 because it is based on light water reactor (LWR) technology, Lyash said. “While we will continue to support and examine all of the various SMR designs being proposed, we believe that light-water SMR designs, which are closely related to the current generation of TVA’s large nuclear units, are more mature and closer to commercial deployment within the next decade,” he said. “For that reason, we are currently in discussions with GE-Hitachi to support their BWRX-300 light-water SMR design, which will help inform a future decision about potential deployment.”The BWRX-300 is a 300-MW boiling water reactor (BWR) that the Wilmington, N.C.–based GEH launched in 2017. The reactor design is the 10th evolution of GE’s BWR technology, and GEH says it represents “the simplest, yet most innovative BWR design since GE began developing nuclear reactors in 1955.”

https://www.powermag.com/tva-unveils-major-new-nuclear-program-first-smr-at-clinch-river-site/