An apparatus comprising: a collection of devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634) configured to be coupled to at least one electric power bus and to perform a plurality of electrical functions in association with the at least one electric power bus; and a control system (124; 220; 320; 420; 30) operatively associated with the collection of devices (122; 210; 310; 410; 514; 612, 614, 622, 624, 626, 632, 634) and configured to perform electronic communications with the collection of devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634) that reference groups of the collection of devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634) as respective ones of a plurality of different power network functional entities that perform aggregations of functions of the devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634) of corresponding ones of the groups and to operate the collection of devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634) such that the collection of devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634) selectively behaves as the power network functional entities responsive to the communications, wherein the devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634) are configured to be arranged in a variety of different arrangements, wherein the control system (124; 220; 320; 420; 30) is operative to be configured responsive to communications from an external source to instantiate different power network functional entity definitions to correspond to the different arrangements of the devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634), wherein the control system (124; 220; 320; 420; 30) is configured to cause a first group of the collection of devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634) to behave as a first one of the power network functional entities responsive to first communications associated with the first one of the power network functional entities and to cause a second group of the collection of devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634) to behave as a second one of the power network functional entities responsive to second communications associated with the second one of the power network functional entities, and wherein the first one of the power network functional entities comprises a first one of a power routing entity, a power conversion entity and a metering entity and wherein the second one of the power network functional entities comprises a second one of the power routing entity, the power conversion entity and the metering entity. a collection of devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634) configured to be coupled to at least one electric power bus and to perform a plurality of electrical functions in association with the at least one electric power bus; and a control system (124; 220; 320; 420; 30) operatively associated with the collection of devices (122; 210; 310; 410; 514; 612, 614, 622, 624, 626, 632, 634) and configured to perform electronic communications with the collection of devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634) that reference groups of the collection of devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634) as respective ones of a plurality of different power network functional entities that perform aggregations of functions of the devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634) of corresponding ones of the groups and to operate the collection of devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634) such that the collection of devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634) selectively behaves as the power network functional entities responsive to the communications, wherein the devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634) are configured to be arranged in a variety of different arrangements, wherein the control system (124; 220; 320; 420; 30) is operative to be configured responsive to communications from an external source to instantiate different power network functional entity definitions to correspond to the different arrangements of the devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634), wherein the control system (124; 220; 320; 420; 30) is configured to cause a first group of the collection of devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634) to behave as a first one of the power network functional entities responsive to first communications associated with the first one of the power network functional entities and to cause a second group of the collection of devices (122; 210; 310; 410; 514; 612, 614 622, 624, 626, 632, 634) to behave as a second one of the power network functional entities responsive to second communications associated with the second one of the power network functional entities, and wherein the first one of the power network functional entities comprises a first one of a power routing entity, a power conversion entity and a metering entity and wherein the second one of the power network functional entities comprises a second one of the power routing entity, the power conversion entity and the metering entity.