Power-to-[X] (PtX) technologies can not only play a substantial role in the global energy mix, but they can also mitigate the impact of global warming. These technologies can help in achieving the Paris Agreement�s target to keep the earth�s temperature rise below 1.5 - 2.0 degrees Celsius. The use of PtX, especially hydrogen (H2) is considered complimentary to renewable energy sources, and can contribute to decarbonizing the energy, industrial, and transportation sectors, for example. Due to these reasons, PtX technologies have been gaining increased attention. The German government and the European Union (EU) formed hydrogen strategies to identify green hydrogen as a fundamental element for energy transformation and decarbonization of different sectors.