16.94 yuan/kg. Hydrogen production by electrolysis of water is a relatively convenient method of producing hydrogen, which can be produced in a variety of ways, such as photovoltaic power generation. The cost of photovoltaic power generation in Qinghai reaches 16.94 yuan/kg. Photovoltaic power generation is a technology that uses the photovoltaic effect at the semiconductor interface to directly convert light energy into electrical energy. It mainly consists of three major parts: solar panels, controllers and inverters. The main components are composed of electronic components.