The surface required shows a small variation between the storage molecules, with a slight advantage for methane in electricity storage and for methanol in H2 storage. This depends mainly on the different efficiency in the reforming and electrification processes . When looking at the fraction of time in which the system operates in storage mode (figure ), one can observe that the differences are less pronounced. The storage system is in operation for approximately 67% of the time to feed BEVs and ca. 75% for FCEVs. Once again, the storage molecule does not make a strong difference, with a slight favour for electricity storage in form of methane and for H2 storage in form of methanol. Combining the information from figure and 6b, it is evident that the differences in the switch between operation modes are limited between electricity and H2, mainly due to the electricity availability profile. On the contrary, the amount of energy to store is significantly different, so for H2 storage, the system needs to be significantly larger.