These Azelio Stirling Engines are high efficiency and use molten aluminum to store heat for later use. Matt Ferrel Indecided
One thing that he didn’t bring up is that it’s not necessary to change the reciprocating motion of the Stirling engine’s piston to rotary motion. The reciprocating motion could be used to move a magnet in and out of a solenoid coil to generate AC. All that is needed is to move the magnetic field through the coil.