Size wise I think even the commercial units they are planning have the core and associated support machinery at about that size, not including things like turbi

Size wise I think even the commercial units they are planning have the core and associated support machinery at about that size, not including things like turbines etc that would be needed for a proper plant. It's been a while since I've seen any technical presentations about TerraPower though so maybe that's out of date. The cost of retrofits is a good point, especially given that our nuclear fleet is getting pretty old. I am also worried about the glut of cheap natural gas and its tendency to stifle other technologies. It's almost unbeatable right now price wise, but I'm a bit concerned about what will happen when that changes. Renewables are great, but base-load power is still a problem.