Comment by SECProto

The one thing that low carbon grids around the world share is high portion of nuclear (or hydro, which you can't build unless it naturally exists). Therefore, the only thing a SMR cost should be compared to is other nuclear reactors. Natural Gas may be cheaper (startup cost), may be more expensive (ongoing fuel), or will definitely be more expensive (carbon in the atmosphere doesn't go away), but regardless there is no reason to compare nuclear to natgas.