Airport Microgrids: Transportation Energy as a Service [Viewpoint]

There are types of airports based on two definitions: statuary and policy. Among statuary airports, there are 395 primary facilities, including large, medium, small, and nonhub commercial service airfields, and 2,937 nonprimary airports, including nonhub commercial service, reliever, and general aviation terminals. Considering policy airports, there are four classifications, including 89 national, 531 regional, 1,261 local, and 813 basic airfields, in addition to 256 unclassified facilities. Airport infra-Mixture supports different transporta-tion modes, including ground (transit buses, railways, cargo vehicles, and so on) and aviation (commercial and cargo planes as well as helicopters).