USTDA signed a grant agreement with EGAT for a vendor-neutral feasibility study evaluating SMR designs from seven named US companies (GE-Hitachi, Holtec, Kairos Power, NuScale, TerraPower, Westinghouse, X-Energy) for a target of approximately 600 MWe. The study will assess potential sites, project costs, and regulatory requirements; an earlier planning estimate put project cost at approximately THB 93 billion (USD 2.8 billion). Signed at Gastech 2026 in Bangkok by USTDA's Thomas Hardy and EGAT Governor Narin Phoawanich (name transliterated inconsistently across sources; also seen as "Phonvichai"), witnessed by Thailand's Energy Minister Akanat Promphan and US Deputy Secretary of Energy James Danly. This is one of several parallel tracks Thailand is pursuing alongside its separate South Korea (KHNP) cooperation, and prior engagement with China, Russia, and Canada.