TECHNOLOGY FOCUS - INDUSTRIAL STANDARDS - Preferred Method: The method further comprises charging a battery with the generated electricity, where the charging step further comprises charging the battery using a battery-to-battery cascade system. The output voltage of the photovoltaic system is substantially equal to the operating voltage of the electrolyzer and the charging voltage of a battery pack, where the electrolyzer produces hydrogen having a pressure greater than 2000 pounds per square inch (PSI). The metal-hydride compressor boosts the pressure of the produced hydrogen from a value greater than 2000 pounds PSI to a value substantially equal to or greater than 10000 PSI. The electrolyzer and the metal-hydride compressor share a single storage tank, where the metal-hydride compressor comprises a rare earth or transition metal alloy. Also, the metal-hydride compressor comprises a magnesium-based alloy. The method as well comprises using a heat engine operably-coupled to a geothermal well to generate energy. The photovoltaic system further comprises a smart charge controller. Alternatively, the method comprises: producing electricity using a photovoltaic system; using the electricity to drive an electrolyzer to produce hydrogen under pressure; generating heat using a photovoltaic system; using the heat to drive a metal-hydride compressor; boosting the pressure of the hydrogen using the metal-hydride compressor; and charging a battery using the produced electricity. The output voltage of the photovoltaic system is substantially equal to the operating voltage of the electrolyzer and the charging voltage of the batteries. The electrolyzer further comprises a metal-hydride electrolyzer. Moreover, at least part of the generated hydrogen is burned to create heat. The photovoltaic system, the electrolyzer, the metal-hydride compressor, and the battery are integrated within a single housing. In a second alternative case, the method comprises: generating heat and electricity using a photovoltaic system; producing hydrogen using a metal-hydride electrolyzer at least partially powered by the generated electricity; boosting the pressure of the produced hydrogen via a metal-hydride hydrogen compressor at least partially powered by the generated heat; and storing the produced hydrogen in a hydride-based storage system.