Vietnam's revival of its nuclear power programme through the Ninh Thuan 2 project marks a pivotal moment in the country's energy sector, but success hinges on a critical question: can the project attract billions in international investment? Drawing lessons from Vietnam's landmark BOT power projects like Phu My 2.2 and Phu My 3, this analysis examines the five essential bankability questions that must be answered before financial close, from regulatory stability to sovereign risk allocation.