It is important to note that EMS is not limited to eVTOL, it makes also sense for electric / hybrid aircraft. Indeed, the right EMS will sustain sufficient energy reserves to conduct fast power responses seamlessly for safe and optimal take-off, climbing and landing maneuvers. Smart overall energy distribution will also extend the battery life and fuel cells to optimize efficiency, boost reliability and reduce carbon footprint and cost. Trajectory optimization and risk reduction are therefore key usages of efficient EMS.