The BIGGEST problem with clean energy

I’ve got a physics puzzle for you that keeps popping into my mind. So what if we use a steam turbine to produce electricity. But on the pipes that runs to the steam turbine we place several sterling motors to also generate the power to heating element only and then use a copper tubing coil to condense the steam back into water and drain back into the steam production chamber, to be made into steam again. The steam turbine electricity goes to whatever other source you need electricity for. You only supply electricity to get the steam production started and then it switches over to the electricity produced by the Sterling Engines from the heat No the Sterling engines would be hooked together like a tandem bike so if it was not able to put in Energy it wouldn’t lock up the system but could always add to the power being produced. Because 60% of the lost energy is lost in heat in any production if we could take full vantage of the heat to continue to produce another source of electricity just to heat the water and if it’s too much electricity it could be added into the other electricity as additional surplus or storage in battery’s for on demand startup.
Any electricity production produces heat or lost energy why could we not you Sterling engine to utilize that additional heat to work pump the water back up the hill from what you’re using but I still like the first one because it’s sealed system you don’t lose the water to evaporation you condense it back in the order and you recover the lost energy.