Provides an overview of the different pathways to produce Synthetic Natural Gas * Covers technological, and economic aspects of this Synthetic Natural Gas * Details the most popular technologies and state-of-the-art of SNG technologies while also covering recent and future research trends * Covers the main process steps during conversion of coal and dry biomass to SNG: gasification, gas cleaning, methanation and gas upgrading * Describes a number of novel processes for the production of SNG with their specific combination of process steps as well as the boundary conditions * Covers important technical aspects of Power-to-Gas processes