Power—To—Gas Production

Power—to—Gas Production is a process gaining momentum as the base for the energy transition via e-fuels. In the scientific context, a clear initial distinction is still missing and in this chapter the authors aims at filling this gap by first stating the difference between Direct and Indirect PowerdtodGas production. Once defined, their modeling and simulation are discussed for considering the process for System Integration and Design. This step is fundamental for the technology characterization within the transition pathways identified in policy and technological strategic documents. Finally, the approach to assess the economic and environmental aspect of the Power to Gas production are presented in order to provide to the readers a ready tool for assessing the process performance and its contribution within the multi energy systems framework.