ISO 15118 as the Enabler of Vehicle-to-Grid Applications

This work provides a comprehensible overview of the ISO 15118 standard to show the potential of this future-proof charging communication protocol used for integrating electric vehicles (EVs) into the smart grid. The various parts of the ISO 15118 document family as well as their functionality scope are introduced. An internationally agreed-upon mechanism to enable EVs to feed energy back to the grid without compromising the grid's stability is key to a successful market introduction of Vehicle-to-Grid-enabled EVs and charging infrastructure. Therfore, the mechanism specified in ISO 15118 to enable bidirectional power flow is introduced and discussed.