In general, plasma contains reactive radicals, ions, and high-energy electrons [8]. The plasma capability, as well as its high energy density, ensures the compactness of the material-modifying system. Moreover, the plasma system can be adapted for reforming various hydrocarbons, such as natural gas, heavy oils, and biofuels [9]. Another advantage is the fast response time that can be achieved, since the plasma is operated by electricity. When steam is used as a plasma forming gas, reductive and oxidative radicals are produced in the plasma enabling it to effectively reform different hydrocarbons [9], [10], [11] and [12]. In this work, microwave steam plasma methods for hydrogen production via methane reforming are presented.