I did thermodynamics I and II 50 yrs. ago so help me out here. I note that high temperature and pressure steam is used in turbines and presumably the higher, the better the efficiency. My question is, is the temperature doing anything or is it only necessary to produce the high steam pressure from the boiler. If it was possible to produce the same pressure at a lower temperature would the result be the same? Is it only the kinetic energy of the steam that is driving the turbine blades?