A working-fluid generator comprising an electrically conductive vessel that is surrounded by an inductive coil and has conductive, longitudinal members that extend through the vessel. A fluid inlet passes through a one-way valve. Fluid heated by the interaction between the inductive coil and the combination of conductive vessel and conductive, longitudinal members is converted to working fluid in the form of a gas that builds pressure in the air-filled space inside the vessel. Air in the pressurized gas is released through a valve, leaving a working fluid. This fluid is controllably released through a solenoid valve and into a conduit leading to a working-fluid-driven machine. A renewable-energy resource may be used to preheat the fluid to be introduced to the working-fluid generator.