Power to Gas Technology Development and Application in China

In recent years, rapid development of renewable energy, especially in form of photovoltaic cells and wind turbines, is resulting in significant energy security, climate change mitigation and economic benefits. Since the volatile character of wind and solar radiation leads to a fluctuating power production, these renewables are incapable of providing reliable base load power. Due to the order of energy storage magnitude involved, this can best be achieved by converting electricity into hydrogen via electrolysis, a process that is also called power to gas. This paper presents the process chains of different power to gas paths, including the development of power to gas pilot plants in China and in the worldwide. Finally, the use of hydrogen in transportation, chemical industry and reconversion to power are compared.